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FEATURES
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LT6205/LT6206/LT6207 Single/Dual/Quad Single Supply 3V, 100MHz Video Op Amps DESCRIPTION
The LT(R)6205/LT6206/LT6207 are low cost single/dual/ quad voltage feedback amplifiers that feature 100MHz gain-bandwidth product, 450V/s slew rate and 50mA output current. These amplifiers have an input range that includes ground and an output that swings within 60mV of either supply rail, making them well suited for single supply operation. These amplifiers maintain their performance for supplies from 2.7V to 12.6V and are specified at 3V, 5V and 5V. The inputs can be driven beyond the supplies without damage or phase reversal of the output. Isolation between channels is high, over 90dB at 10MHz. The LT6205 is available in the 5-pin SOT-23, and the LT6206 is available in an 8-lead MSOP package with standard op amp pinouts. For compact layouts the quad LT6207 is available in the 16-pin SSOP package. These devices are specified over the commercial, industrial and automotive temperature ranges.
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and ThinSOT is a trademark of Linear Technology Corporation. All other trademarks are the property of their respective owners.
450V/s Slew Rate 100MHz Gain Bandwidth Product Wide Supply Range 2.7V to 12.6V Output Swings Rail-to-Rail Input Common Mode Range Includes Ground High Output Drive: 50mA Channel Separation: 90dB at 10MHz Specified on 3V, 5V and 5V Supplies Input Offset Voltage: 1mV Low Power Dissipation: 20mW per Amplifier on Single 5V Operating Temperature Range: -40C to 125C Low Profile (1mm) SOT-23 (ThinSOTTM) Package
APPLICATIONS
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Video Line Driver Automotive Displays RGB Amplifiers Coaxial Cable Drivers Low Voltage High Speed Signal Processing
TYPICAL APPLICATION
Baseband Video Splitter/Cable Driver
3.3V 1F VOUT VOUT1 LT6206 2 75 1 0V
Output Step Response
499
499 8
75
- +
VIN 75
3
VIN 0V VS = 3.3V VIN = 0.1V TO 1.1V f = 10MHz VOUT2 75 20ns/DIV
620567 TA01b
5
+
7
75
6
-
4 F3dB 50MHz IS 25mA
499
499
620567 TA01a
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LT6205/LT6206/LT6207 ABSOLUTE MAXIMUM RATINGS
(Note 1)
Total Supply Voltage (V + to V-) ..............................12.6V Input Current .......................................................10mA Input Voltage Range (Note 2)....................................VS Output Short-Circuit Duration (Note 3) ........... Indefinite Pin Current While Exceeding Supplies (Note 9) ...25mA Operating Temperature Range (Note 4) LT6205C/LT6206C/LT6207C, LT6205I/LT6206I/LT6207I .................... -40C to 85C LT6205H ........................................... -40C to 125C
Specified Temperature Range (Note 4) LT6205C/LT6206C/LT6207C ..................... 0C to 70C LT6205I/LT6206I/LT6207I .................... -40C to 85C LT6205H ........................................... -40C to 125C Storage Temperature Range .................. -65C to 150C Maximum Junction Temperature .......................... 150C Lead Temperature (Soldering, 10 sec) ................. 300C
PIN CONFIGURATION
TOP VIEW OUT A 1 TOP VIEW OUT 1 V- 2
- +
16 OUT D
- + A D - +
TOP VIEW 5 V+ OUT A -IN A +IN A V- 1 2 3 4
- + - +
-IN A 2 8 7 6 5 V+ OUT B -IN B +IN B +IN A 3 V+ 4 +IN B 5 -IN B 6 OUT B 7 NC 8
15 -IN D 14 +IN D 13 V-
+IN 3
4 -IN
+ -
B
C
+ -
12 +IN C 11 -IN C 10 OUT C 9 NC
S5 PACKAGE 5-LEAD PLASTIC TSOT-23 TJMAX = 150C, JA = 250C/W
MS8 PACKAGE 8-LEAD PLASTIC MSOP TJMAX = 150C, JA = 250C/W
GN PACKAGE 16-LEAD NARROW PLASTIC SSOP TJMAX = 150C, JA = 135C/W
ORDER INFORMATION
LEAD FREE FINISH LT6205CS5#PBF LT6205IS5#PBF LT6205HS5#PBF LT6206CMS8#PBF LT6206IMS8#PBF LT6207CGN#PBF LT6207IGN#PBF TAPE AND REEL LT6205CS5#TRPBF LT6205IS5#TRPBF LT6205HS5#TRPBF LT6206CMS8#TRPBF LT6206IMS8#TRPBF LT6207CGN#TRPBF LT6207IGN#TRPBF PART MARKING* LTAEM LTAEM LTAEM LTH3 LTH4 6207 6207I PACKAGE DESCRIPTION 5-Lead Plastic TSOT-23 5-Lead Plastic TSOT-23 5-Lead Plastic TSOT-23 8-Lead Plastic MSOP 8-Lead Plastic MSOP 16-Lead Narrow Plastic SSOP 16-Lead Narrow Plastic SSOP SPECIFIED TEMPERATURE RANGE 0C to 70C -40C to 85C -40C to 125C 0C to 70C -40C to 85C 0C to 70C -40C to 85C
Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container. Consult LTC Marketing for information on non-standard lead based finish parts. For more information on lead free part marking, go to: http://www.linear.com/leadfree/ For more information on tape and reel specifications, go to: http://www.linear.com/tapeandreel/
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LT6205/LT6206/LT6207 ELECTRICAL CHARACTERISTICS
The l denotes specifications which apply over the specified temperature range, otherwise specifications are at TA = 25C. VS = 3V, 0V; VS = 5V, 0V; VCM = VOUT = 1V, unless otherwise noted.
LT6205C/LT6206C/LT6207C LT6205I/LT6206I/LT6207I SYMBOL VOS PARAMETER Input Offset Voltage Input Offset Voltage Match (Channel-to-Channel) (Note 5) Input Offset Voltage Drift (Note 6) IB IOS en in Input Bias Current Input Offset Current Input Noise Voltage Input Noise Voltage Density Input Noise Current Density Input Resistance Input Capacitance CMRR PSRR Common Mode Rejection Ratio Input Voltage Range Power Supply Rejection Ratio Minimum Supply Voltage A VOL Large-Signal Voltage Gain VS = 3V to 12V VCM = VOUT = 0.5V VCM = 0.5V VS = 5V, VO = 0.5V to 4.5V, RL = 1k VS = 5V, VO = 1V to 3V, RL = 150 VS = 3V, VO = 0.5V to 2.5V, RL = 1k VCM = 0V to V+ - 2V
l l l l l l l l l l l l l l l l l l
CONDITIONS
l l l l l
MIN
TYP 1 1 7 10 0.6 2 9 4 1 2
MAX 3.5 5 3 4 15 30 3
UNITS mV mV mV mV V/C A A VP-P nV/Hz pA/Hz M pF dB
0.1Hz to 10Hz f = 10kHz f = 10kHz VCM = 0V to V+ - 2V 78 0 67
90 V+ - 2 75 2.7
V dB V V/mV V/mV V/mV
30 5 20
100 20 60 10 75 300 200 60 150 650 300 25 150 500 350 100 250 1200 500
VOL
Output Voltage Swing Low (Note 7) No Load, Input Overdrive = 30mV ISINK = 5mA VS = 5V, ISINK = 25mA VS = 3V, ISINK = 15mA Output Voltage Swing High (Note 7) No Load, Input Overdrive = 30mV ISOURCE = 5mA VS = 5V, ISOURCE = 25mA VS = 3V, ISOURCE = 15mA Short-Circuit Current VS = 5V, Output Shorted to GND VS = 3V, Output Shorted to GND
mV mV mV mV mV mV mV mV mA mA mA mA
VOH
ISC
35 20 30 20
60 50 3.75 5 5.75
IS GBW SR
Supply Current per Amplifier Gain Bandwidth Product Slew Rate Channel Separation f = 2MHz VS = 5V, A V = 2, RF = RG = 1k VO = 1V to 4V, Measured from 1.5V to 3.5V f = 10MHz VOUT = 2VP-P (Note 8) VS = 5V, VOUT = 2V, AV = -1, RL = 150 VS = 5V, A V = 2, RL = 150, Output Black Level = 1V VS = 5V, A V = 2, RL = 150, Output Black Level = 1V
mA mA MHz V/s dB MHz ns ns % Deg
l
65
100 450 90 71 15 25 0.05 0.08
FPBW ts
Full Power Bandwidth Settling Time to 3% Settling Time to 1% Differential Gain Differential Phase
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LT6205/LT6206/LT6207 ELECTRICAL CHARACTERISTICS
SYMBOL VOS PARAMETER Input Offset Voltage Input Offset Voltage Match (Channel-to-Channel) (Note 5) Input Offset Voltage Drift (Note 6) IB IOS en in Input Bias Current Input Offset Current Input Noise Voltage Input Noise Voltage Density Input Noise Current Density Input Resistance Input Capacitance CMRR PSRR AVOL Common Mode Rejection Ratio Input Voltage Range Power Supply Rejection Ratio Large-Signal Voltage Gain Output Voltage Swing VS = 2V to 6V VO = -4V to 4V, RL = 1k VO = -3V to 3V, RL = 150 No Load, Input Overdrive = 30mV IOUT = 5mA IOUT = 25mA Short to Ground VCM = -5V to 3V
l l l l l l l l l l
The l denotes specifications which apply over the specified temperature range, otherwise specifications are at TA = 25C. VS = 5V; VCM = VOUT = 0V, unless otherwise noted.
LT6205C/LT6206C/LT6207C LT6205I/LT6206I/LT6207I CONDITIONS
l l l l l
MIN
TYP 1 1 10 18 0.6 2 9 4 1 2
MAX 4.5 6 3 4 18 30 3
UNITS mV mV mV mV V/C A A VP-P nV/Hz pA/Hz M pF dB
0.1Hz to 10Hz f = 10kHz f = 10kHz VCM = -5V to 3V 78 -5 67 50 7.5 4.88 4.75 3.8 40 30
90 3 75 133 20 4.92 4.85 4.35 60 4 5.6 6.5
V dB V/mV V/mV V V V mA mA mA mA MHz V/s dB MHz ns ns % Deg
ISC IS GBW SR
Short-Circuit Current Supply Current per Amplifier Gain Bandwidth Product Slew Rate Channel Separation
f = 2MHz A V = -1, RL = 1k VO = -4V to 4V, Measured from -3V to 3V f = 10MHz VOUT = 8VP-P (Note 8) VOUT = 2V, AV = -1, RL = 150 A V = 2, RL = 150, Output Black Level = 1V A V = 2, RL = 150, Output Black Level = 1V
l
65 350
100 600 90
FPBW ts
Full Power Bandwidth Settling Time to 3% Settling Time to 1% Differential Gain Differential Phase
14
24 15 25 0.05 0.08
The l denotes specifications which apply over the full specified temperature range, -40C TA 125C, otherwise specifications are at TA = 25C. VS = 3V, 0V; VS = 5V, 0V; VCM = VOUT = 1V, unless otherwise noted.
LT6205H SYMBOL VOS PARAMETER Input Offset Voltage Input Offset Voltage Drift (Note 6) IB Input Bias Current CONDITIONS
l l l
MIN
TYP 1
MAX 3.5 6 20 45
UNITS mV mV V/C A
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LT6205/LT6206/LT6207 ELECTRICAL CHARACTERISTICS
SYMBOL IOS en in PARAMETER Input Offset Current Input Noise Voltage Input Noise Voltage Density Input Noise Current Density Input Resistance Input Capacitance CMRR PSRR Common Mode Rejection Ratio Input Voltage Range Power Supply Rejection Ratio Minimum Supply Voltage AVOL Large-Signal Voltage Gain VS = 3V to 12V VCM = VOUT = 0.5V VCM = 0.5V VS = 5V, V0 = 0.5V to 4.5V, RL = 1k VS = 5V, V0 = 1V to 3V, RL = 150 VS = 3V, V0 = 0.5V to 2.5V, RL = 1k VCM = 0V to V+ - 2V
l l l l l l l l l l l l l l l l l l
The l denotes specifications which apply over the full specified temperature range, -40C TA 125C, otherwise specifications are at TA = 25C. VS = 3V, 0V; VS = 5V, 0V; VCM = VOUT = 1V, unless otherwise noted.
LT6205H CONDITIONS
l
MIN
TYP 2 9 4 1 2
MAX 5
UNITS A VP-P nV/Hz pA/Hz M pF dB
0.1Hz to 10Hz f = 10kHz f = 10kHz VCM = 0V to V+ - 2V 72 0 62
V+ - 2
V dB
2.7 25 3.5 15 40 200 600 400 125 300 1400 600 35 20 30 15 60 50 3.75 50 450 90 71 15 25 0.05 0.08 5 6.5
V V/mV V/mV V/mV mV mV mV mV mV mV mV mV mA mA mA mA mA mA MHz V/s dB MHz ns ns % Deg
VOL
Output Voltage Swing Low (Note 7) No Load, Input Overdrive = 30mV ISINK = 5mA VS = 5V, ISINK = 25mA VS = 3V, ISINK = 15mA Output Voltage Swing High (Note 7) No Load, Input Overdrive = 30mV ISOURCE = 5mA VS = 5V, ISOURCE = 25mA VS = 3V, ISOURCE = 15mA Short-Circuit Current VS = 5V, Output Shorted to GND VS = 3V, Output Shorted to GND
VOH
ISC
IS GBW SR
Supply Current per Amplifier Gain Bandwidth Product Slew Rate Channel Separation f = 2MHz VS = 5V, AV = 2, RF = RG = 1k VO = 1V to 4V, Measured from 1.5V to 3.5V f = 10MHz VOUT = 2VP-P (Note 8) VS = 5V, VOUT = 2V, A V = -1, RL = 150 VS = 5V, A V = 2, RL = 150, Output Black Level = 1V VS = 5V, A V = 2, RL = 150, Output Black Level = 1V
l
FPBW ts
Full Power Bandwidth Settling Time to 3% Settling Time to 1% Differential Gain Differential Phase
The l denotes specifications which apply over the full specified temperature range, -40C TA 125C, otherwise specifications are at TA = 25C. VS = 5V; VCM = VOUT = 0V, unless otherwise noted.
LT6205H SYMBOL VOS PARAMETER Input Offset Voltage Input Offset Voltage Drift (Note 6) CONDITIONS
l l
MIN
TYP 1.3
MAX 4.5 7 25
UNITS mV mV V/C
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LT6205/LT6206/LT6207 ELECTRICAL CHARACTERISTICS
SYMBOL IB IOS en in PARAMETER Input Bias Current Input Offset Current Input Noise Voltage Input Noise Voltage Density Input Noise Current Density Input Resistance Input Capacitance CMRR PSRR A VOL Common Mode Rejection Ratio Input Voltage Range Power Supply Rejection Ratio Large-Signal Voltage Gain Output Voltage Swing VS = 2V to 6V VO = -4V to 4V, RL = 1k VO = -3V to 3V, RL = 150 No Load, Input Overdrive = 30mV IOUT = 5mA IOUT = 25mA Short to Ground VCM = -5V to 3V
l l l l l l l l l l
The l denotes specifications which apply over the full specified temperature range, -40C TA 125C, otherwise specifications are at TA = 25C. VS = 5V; VCM = VOUT = 0V, unless otherwise noted.
LT6205H CONDITIONS
l l
MIN
TYP
MAX 50 5
UNITS A A VP-P nV/Hz pA/Hz M pF dB
0.1Hz to 10Hz f = 10kHz f = 10kHz VCM = -5V to 3V 72 -5 62 40 5 4.85 4.65 3.5 40 20
2 9 4 1 2 3
V dB V/mV V/mV V V V
ISC IS GBW SR
Short-Circuit Current Supply Current per Amplifier Gain Bandwidth Product Slew Rate Channel Separation
60 4 5.6 7.5
mA mA mA mA MHz V/s dB MHz ns ns % Deg
f = 2MHz A V = -1, RL = 1k VO = -4V to 4V, Measured from -3V to 3V f = 10MHz VOUT = 8VP-P (Note 8) VOUT = 2V, AV = -1, RL = 150 A V = 2, RL = 150, Output Black Level = 1V A V = 2, RL = 150, Output Black Level = 1V
l
50 350 600 90 14 24 15 25 0.05 0.08
FPBW ts
Full Power Bandwidth Settling Time to 3% Settling Time to 1% Differential Gain Differential Phase
Note 1: Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. Exposure to any Absolute Maximum Rating condition for extended periods may affect device reliability and lifetime. Note 2: The inputs are protected by back-to-back diodes. If the differential input voltage exceeds 1.4V, the input current should be limited to less than 10mA. Note 3: A heat sink may be required to keep the junction temperature below absolute maximum. This depends on the power supply voltage and how many amplifiers are shorted. Note 4: The LT6205C/LT6206C/LT6207C are guaranteed to meet specified performance from 0C to 70C and are designed, characterized and expected to meet specified performance from -40C to 85C but are not tested or QA sampled at these temperatures. The LT6205I/LT6206I/LT6207I are guaranteed to meet specified performance from -40C to 85C. The LT6205H is guaranteed to meet specified performance from -40C to 125C.
Note 5: Matching parameters are the difference between the two amplifiers A and D and between B and C of the LT6207; between the two amplifiers of the LT6206. Note 6: This parameter is not 100% tested. Note 7: Output voltage swings are measured between the output and power supply rails. Note 8: Full power bandwidth is calculated from the slew rate measurement: FPBW = SR/2VPEAK. Note 9: There are reverse biased ESD diodes on all inputs and outputs. If these pins are forced beyond either supply, unlimited current will flow through these diodes. If the current is transient in nature and limited to less than 25mA, no damage to the device will occur.
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LT6205/LT6206/LT6207 TYPICAL PERFORMANCE CHARACTERISTICS
VOS Distribution
40 35 PERCENT OF UNITS (%) 30 25 20 15 10 5 0 -3 -2 -1 0 1 2 INPUT OFFSET VOLTAGE (mV) 3
620567 G01
Supply Current per Amplifier vs Supply Voltage
5 TA = 125C 4 TA = 25C 3 TA = -55C CHANGE IN INPUT OFFSET VOLTAGE (V) SUPPLY CURRENT PER AMPLIFIER (mA) 100 0 -100 -200 -300 -400 -500
Minimum Supply Voltage
VS = 5V, 0V VCM = 1V
TA = -55C TA =125C TA = 25C
2
1
0 0 1 2 3 4 5 6 7 8 9 10 11 12 TOTAL SUPPLY VOLTAGE (V)
620567 G02
-600 1.5
2.0
2.5 3.0 3.5 4.0 4.5 TOTAL SUPPLY VOLTAGE (V)
5.0
620567 G03
Change in Offset Voltage vs Input Common Mode Voltage
1000 VS = 5V, 0V INPUT BIAS CURRENT (A) -2 -3 -4 -5 -6 -7 -8 -9 -10 -11 TA = -55C 0 1 2 3 4 INPUT COMMON MODE VOLTAGE (V) 5 -12
Input Bias Current vs Input Common Mode Voltage
VS = 5V, 0V INPUT BIAS CURRENT (A) -4 -5 -6 -7 -8 -9 -10 -11
Input Bias Current vs Temperature
VS = 5V, 0V VCM = 1V
OFFSET VOLTAGE CHANGE (V)
800
600
TA = 125C
400 TA = 25C 200 TA =125C 0
TA = 25C
TA = -55C 0 1 2 3 4 INPUT COMMON MODE VOLTAGE (V) 5
-12 -50
-25
0 25 50 75 TEMPERATURE (C)
100
125
620567 G04
620567 G05
620567 G06
Output Saturation Voltage vs Load Current (Output Low)
10 OUTPUT SATURATION VOLTAGE (V) 10 OUTPUT SATURATION VOLTAGE (V) VS = 5V, 0V VOD = 30mV TA = 125C 1 TA = 25C
Output Saturation Voltage vs Load Current (Output High)
OUTPUT SHORT-CIRCUIT CURRENT (mA) VS = 5V, 0V VOD = 30mV 75 TA = 125C 70 65 60 55
Short-Circuit Current vs Temperature
SINKING SOURCING VS = 5V, 0V VCM = 1V SINKING SOURCING 50 45 40 35 -50 -25 VS = 3V, 0V VCM = 1V
1 TA = 25C
0.1
TA = -55C
0.1
TA = -55C
0.01 0.01
0.1 1 10 LOAD CURRENT (mA)
100
620567 G07
0.01 0.01
0.1 1 10 LOAD CURRENT (mA)
100
620567 G08
0 25 50 75 TEMPERATURE (C)
100
125
620567 G09
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LT6205/LT6206/LT6207 TYPICAL PERFORMANCE CHARACTERISTICS
Short-Circuit Current vs Temperature
90 OUTPUT SHORT-CIRCUIT CURRENT (mA) 80 INPUT VOLTAGE (V) SINKING 70 60 50 40 3O -50 SOURCING VS = 5V 500 400 300 200 100 0 -100 -200 -300 -400 -500 -25 0 25 50 75 TEMPERATURE (C) 100 125 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 OUTPUT VOLTAGE (V)
620567 G11
Open-Loop Gain
VS = 5V, 0V VCM = 1V TA = 25C INPUT VOLTAGE (V) 500 400 300 200 100 0 -100 -200 -300 -400 -500
Open-Loop Gain
VS = 5V TA = 25C
RL = 1k RL = 150
RL = 1k
RL = 150
-5 -4 -3 -2 -1 0 1 2 OUTPUT VOLTAGE (V)
3
4
5
620567 G10
620567 G12
Warm Up Drift vs Time (LT6206)
120 CHANGE IN OFFSET VOLTAGE (V) 100 80 VS = 5V, 0V 60 40 20 0 0 10 20 30 40 50 60 70 80 90 100 TIME AFTER POWER-UP (s)
620567 G13
Input Noise Voltage Density vs Frequency
30 INPUT NOISE VOLTAGE DENSITY (nV/ Hz) 25 20 15 10 5 0 100 INPUT NOISE CURRENT DENSITY (pA/ Hz) VS = 5V, 0V VCM = 1V TA = 25C 16 14 12 10 8 6 4 2
Input Noise Current Density vs Frequency
VS = 5V, 0V VCM = 1V TA = 25C
TA = 25C VS = 5V
1k 10k FREQUENCY (Hz)
100k
620567 G14
0 100
1k 10k FREQUENCY (Hz)
100k
620567 G15
0.1Hz to 10Hz Noise Voltage
VS = 5V, 0V VCM = 1V TA = 25C NOISE VOLTAGE (1V/DIV) 70 60 50 40 GAIN (dB) 30 20 10 0 -10
Gain and Phase vs Frequency
140 PHASE VS = 3V, 0V VS = 5V 120 GAIN BANDWIDTH (MHz) 100 80 60 40 20 VS = 3V, 0V TA = 25C RL = 1k CL = 5pF 1M GAIN VS = 5V 100M 0 -20 -40 500M 95 PHASE (DEG)
Gain Bandwidth and Phase Margin vs Supply Voltage
TA = 25C RF = RG = 1k CL = 5pF PHASE MARGIN 40 110 GAIN BANDWIDTH 105 100 35 50 45 PHASE MARGIN (DEG)
TIME (2 SEC/DIV)
620567 G16
-20 100k
10M FREQUENCY (Hz)
0
2
4 6 8 10 TOTAL SUPPLY VOLTAGE (V)
12
620567 G17
620567 G18
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LT6205/LT6206/LT6207 TYPICAL PERFORMANCE CHARACTERISTICS
Gain Bandwidth and Phase Margin vs Temperature
RL = 1k CL = 5pF GAIN BANDWIDTH (MHz) 55 VS = 5V 50 45 PHASE MARGIN (DEG) SLEW RATE (V/s) PHASE MARGIN VS = 3V, 0V 120 110 100 90 80 -50 -25 VS = 3V, 0V GAIN BANDWIDTH 0 25 50 75 TEMPERATURE (C) 100 125 VS = 5V 40 35 750 700 650 600 550 500 450 400 350 -50 FALLING VS = 5V, 0V RISING VS = 5V, 0V FALLING VS = 5V SLEW RATE (V/s) RISING VS = 5V
Slew Rate vs Temperature
AV = -1 RG = RF = 1k RL = 1k 750 700 650 600 550
Slew Rate vs Closed-Loop Gain
VS = 5V VO = -4V to 4V RL = 1k TA = 25C RISING
FALLING 500 450 400
-25
0 25 50 75 TEMPERATURE (C)
100
125
2
3 GAIN (AV)
4
5
620567 G21
620567 G19
620567 G20
Closed-Loop Gain vs Frequency
15 TA = 25C 12 CL = 5pF A = +1 9V 6 GAIN (dB) 3 0 -3 -6 -9 -12 -15 100k 1M 10M FREQUENCY (Hz) 100M 500M VS = 3V VCM = 1V 1000
Output Impedance vs Frequency
POWER SUPPLY REJECTION RATIO (dB) VS = 5V, 0V TA = 25C 90 80 70 60 50 40 30 20 10
Power Supply Rejection Ratio vs Frequency
VS = 5V, 0V TA = 25C
OUTPUT IMPEDANCE ()
VS = 5V VCM = 0V
100 AV = 10 10 AV = 2 AV = 1
+PSRR
-PSRR
1
0.1 100k
1M
10M FREQUENCY (Hz)
100M
500M
0 10k
100k
1M 10M FREQUENCY (Hz)
100M
620567 G24
620567 G22
620567 G23
Common Mode Rejection Ratio vs Frequency
100 COMMON MODE REJECTION RATIO (dB) 90 80 VOLTAGE GAIN (dB) 70 60 50 40 30 20 10 0 10k 100k 1M 10M FREQUENCY (Hz) 100M 1G 50 40 VS = 5V TA = 25C 120
Channel Separation vs Frequency
VS = 5V LT6206 CH A-B 110 LT6207 CH A-D, CH B-C T = 25C 100 A 90 80 70 60 OVERSHOOT (%) 40 35 30 25 20 15 10 5 0 1M 10M FREQUENCY (Hz) 100M
620567 G26
Series Output Resistor vs Capacitive Load
VS = 5V, 0V AV = 1 TA = 25C
RS = 10, RL =
RS = 20, RL =
RL = RS = 50
10
100 CAPACITIVE LOAD (pF)
1000
620567 G27
620567 G25
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LT6205/LT6206/LT6207 TYPICAL PERFORMANCE CHARACTERISTICS
Series Output Resistor vs Capacitive Load
40 35 30 OVERSHOOT (%) 25 20 15 10 RL = RS = 50 5 0 10 100 CAPACITIVE LOAD (pF) 1000
620567 G28
Maximum Undistorted Output Signal vs Frequency
10 9 OUTPUT VOLTAGE SWING (VP-P) -30 AV = -1 AV = 2 DISTORTION (dB) -40 -50 -60
Distortion vs Frequency
AV = +1 VO = 2VP-P VS = 5V, 0V RL = 1k, 2ND
VS = 5V, 0V AV = 2 TA = 25C
RS = 10, RL =
8 7 6 5 4 3 2 1 VS = 5V TA = 25C HD2, HD3 < -30dBc
RS = 20, RL =
RL = 150, 3RD -70 -80 -90 RL = 1k, 3RD -100 0.01 RL = 150, 2ND
0 0.1
1 10 FREQUENCY (MHz)
100
620567 G30
0.1 1 FREQUENCY (MHz)
10
620567 G31
Distortion vs Frequency
-30 -40 -50 -60 -70 -80 -90 RL = 1k, 3RD -100 0.01 0.1 1 FREQUENCY (MHz) 10
620567 G32
Distortion vs Frequency
-30 -40 AV = +1 VO = 2VP-P VS = 5V RL = 150, 3RD DISTORTION (dB) -30 -40 -50
Distortion vs Frequency
AV = +2 VO = 2VP-P VS = 5V RL = 150, 3RD
AV = +2 VO = 2VP-P VS = 5V, 0V RL = 1k, 2ND DISTORTION (dB)
DISTORTION (dB)
-50 -60 RL = 150, 2ND -70 -80 -90
RL = 150, 2ND -60 -70 -80 -90
RL = 150, 2ND RL = 150, 3RD
RL = 1k, 2ND -100 0.01 0.1 1 FREQUENCY (MHz)
RL = 1k, 3RD 10
620567 G33
RL = 1k, 2ND -100 0.01
RL = 1k, 3RD 10
620567 G34
0.1 1 FREQUENCY (MHz)
Large Signal Response VS = 5V, 0V
Small Signal Response VS = 5V, 0V
500mV/DIV
0V VS = 5V, 0V AV = 1 RL = 150 50ns/DIV
620567 G35
500mV/DIV
2.5V
VS = 5V, 0V AV = 1 RL = 150
50ns/DIV
620567 G36
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LT6205/LT6206/LT6207 TYPICAL PERFORMANCE CHARACTERISTICS
Large Signal Response VS = 5V Small Signal Response VS = 5V
VIN (1V/DIV 0V VOUT (2V/DIV 50ns/DIV
620567 G38
Output-Overdrive Recovery
0V
50mV/DIV
1V/DIV
0V
0V VS = 5V, 0V AV = 2 100ns/DIV
620567 G39
VS = 5V AV = 1 RL = 150
50ns/DIV
620567 G37
VS = 5V AV = 1 RL = 150
APPLICATIONS INFORMATION
V+ I1 I2 I3 R2 R3 Q13
Q9 Q2 V+ DESD1 +IN DESD2 V- V+ DESD3 -IN DESD4 V- RIN 150 D2 D4 I4 R4 D1 D3 RIN 150 Q1 Q3 R1 Q8 Q11 Q5 Q7
Q10
CM DESD5
V+
Q4
Q6
COMPLEMENTARY DRIVE GENERATOR Q12
OUT DESD6 V-
Q14 R5 V-
620567 F01
Figure 1. Simplified Schematic
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11
LT6205/LT6206/LT6207 APPLICATIONS INFORMATION
Amplifier Characteristics Figure 1 shows a simplified schematic of the LT6205/ LT6206/LT6207. The input stage consists of transistors Q1 to Q8 and resistor R1. This topology allows for high slew rates at low supply voltages. The input common mode range extends from ground to typically 1.75V from VCC, and is limited by 2 VBEs plus a saturation voltage of a current source. There are back-to-back series diodes, D1 to D4, across the + and - inputs of each amplifier to limit the differential voltage to 1.4V. RIN limits the current through these diodes if the input differential voltage exceeds 1.4V. The input stage drives the degeneration resistors of PNP and NPN current mirrors, Q9 to Q12, which convert the differential signals into a single-ended output. The complementary drive generator supplies current to the output transistors that swing from rail-to-rail. The current generated through R1, divided by the capacitor CM, determines the slew rate. Note that this current, and hence the slew rate, are proportional to the magnitude of the input step. The input step equals the output step divided by the closed loop gain. The highest slew rates are therefore obtained in the lowest gain configurations. The Typical Performance Characteristics curve of Slew Rate vs Closed-Loop Gain shows the details. ESD The LT6205/LT6206/LT6207 have reverse-biased ESD protection diodes on all inputs and outputs as shown in Figure 1. If these pins are forced beyond either supply unlimited current will flow through these diodes. If the current is transient, and limited to 25mA or less, no damage to the device will occur. Layout and Passive Components With a gain bandwidth product of 100MHz and a slew rate of 450V/s the LT6205/LT6206/LT6207 require special attention to board layout and supply bypassing. Use a ground plane, short lead lengths and RF quality low ESR supply bypass capacitors. The positive supply pin should be bypassed with a small capacitor (typically 0.01F to 0.1F) within 0.25 inches of the pin. When driving heavy loads, an additional 4.7F electrolytic capacitor should be used. When using split supplies, the same is true for the negative supply pin. For optimum performance all feedback components and bypass capacitors should be contained in a 0.5 inch by 0.5 inch area. This helps ensure minimal stray capacitances. The parallel combination of the feedback resistor and gain setting resistor on the inverting input can combine with the input capacitance to form a pole which can degrade stability. In general, use feedback resistors of 1k or less. Capacitive Load The LT6205/LT6206/LT6207 are optimized for wide bandwidth video applications. They can drive a capacitive load of 20pF in a unity-gain configuration. When driving a larger capacitive load, a resistor of 10 to 50 should be connected between the output and the capacitive load to avoid ringing or oscillation. The feedback should still be taken from the output pin so that the resistor will isolate the capacitive load and ensure stability. The Typical Performance Characteristics curves show the output overshoot when driving a capacitive load with different series resistors. Video Signal Characteristics Composite video is the most commonly used signal in broadcast grade products and includes luma (or luminance, the intensity information), chroma (the colorimetry information) and sync (vertical and horizontal raster timing) elements combined into a single signal, NTSC and PAL being the common formats. Component video for entertainment systems include separate signal(s) for the luma and chroma (i.e., Y/C or YPbPr) with sync generally applied to the luma channel (Y signal). In some instances, native RGB signals (separate intensity information for each primary color: red, green, blue) will have sync included as well. All the signal types that include sync are electrically similar from a voltage-swing standpoint, though various timing and bandwidth relationships exist depending on the applicable standard. The typical video waveforms that include sync (including full composite) are specified to have nominal 1VP-P amplitude. The lower 0.3V is reserved for sync tips that carry timing information, and by being at a lower potential than all the other information, represents blacker-than620567fc
12
LT6205/LT6206/LT6207 APPLICATIONS INFORMATION
black intensity, thereby causing scan retrace activity to be invisible on a CRT. The black level of the waveform is at (or set up very slightly above) the upper limit of the sync information. Waveform content above the black level is intensity information, with peak brightness represented at the maximum signal level. In the case of composite video, the modulated color subcarrier is superimposed on the waveform, but the dynamics remain inside the 1VP-P limit (a notable exception is the chroma ramp used for differential-gain and differential-phase measurements, which can reach 1.15VP-P). DC-Coupled Video Amplifier Considerations Typically video amplifiers drive cables that are series terminated (back-terminated) at the source and load-terminated at the destination with resistances equal to the cable characteristic impedance, Z0 (usually 75). This configuration forms a 2:1 resistor divider in the cabling that must be accounted for in the driver amplifier by delivering 2VP-P output into an effective 2 * Z0 load (e.g., 150). Driving the cable can require more than 13mA while the output is approaching the saturation limits of the amplifier output. The absolute minimum supply is: VMIN = 2 + VOH +VOL. For example, the LT6206 dual operating on 3.3V as shown on the front page of this data sheet, with exceptionally low VOH 0.5V and VOL 0.35V, provides a design margin of 0.45V. The design margin must be large enough to include supply variations and DC bias accuracy for the DC-coupled video input. Handling AC-Coupled Video Signals AC-coupled video inputs are intrinsically more difficult to handle than those with DC-coupling because the average signal voltage of the video waveform is effected by the picture content, meaning that the black level at the amplifier wanders with scene brightness. The wander is measured as 0.56V for a 1VP-P NTSC waveform changing from black field to white field and vice-versa, so an additional 1.12V allowance must be made in the amplifier supply (assuming gain of 2, so VMIN = 3.12 + VOH +VOL). For example, an LT6205 operating on 5V has a conservative design margin of 1.03V. The amplifier output (for gain of 2) must swing +1.47V to -1.65V around the DC-operating point, so the biasing circuitry needs to be designed accordingly for optimal fidelity. Clamped AC-Input Cable Driver A popular method of further minimizing supply requirements with AC-coupling is to employ a simple clamping scheme, as shown in Figure 2. In this circuit, the LT6205 operates from 3.3V by having the sync tips control the charge on the coupling capacitor C1, thereby reducing the black level input wander to 0.07V. The only minor drawback to this circuit is the slight sync tip compression ( 0.025V at input) due to the diode conduction current, though the picture content remains full fidelity. This circuit has nearly the design margin of its DC-coupled counterpart, at 0.31V (for this circuit, VMIN = 2.14 + VOH +VOL). The clamp diode anode bias is selected to set the sync tip output voltage at or slightly above VOL. YPbPr to RGB Component Video Converter The back page application uses the LT6207 quad to implement a minimum amplifier count topology to transcode consumer component video into RGB. In this circuit, signals only pass through one active stage from any input to any output, with passive additions being performed by the cable back-termination resistors. The compromise in using passive output addition is that the amplifier outputs must be twice as large as that of a conventional cable driver. The Y-channel section also has the demanding requirement that it single-handedly drives all three outputs to full brightness during times of white content, so a helper current source is used to assure unclipped video when operating from 5V supplies. This circuit maps sync-on-Y to sync on all the RGB channels, and for best results should have input black levels at 0V nominal to prevent clipping.
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13
LT6205/LT6206/LT6207 TYPICAL APPLICATION
3.3V 0.1F 1k 1k 2.4k 75 VIDEO OUT 75 5 LT6205 3 1
4 C1 4.7F COMPOSITE VIDEO IN 1VP-P BAT54 10k C2 4.7F
- +
2
IS 470
19mA
620567 TA02
Figure 2. Clamped AC-Input Video Cable Driver
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14
LT6205/LT6206/LT6207 PACKAGE DESCRIPTION
S5 Package 5-Lead Plastic TSOT-23
(Reference LTC DWG # 05-08-1635)
0.62 MAX 0.95 REF 2.90 BSC (NOTE 4)
1.22 REF
3.85 MAX 2.62 REF
1.4 MIN
2.80 BSC
1.50 - 1.75 (NOTE 4)
PIN ONE RECOMMENDED SOLDER PAD LAYOUT PER IPC CALCULATOR 0.30 - 0.45 TYP 5 PLCS (NOTE 3)
0.95 BSC
0.80 - 0.90 0.20 BSC 1.00 MAX DATUM `A' 0.01 - 0.10
0.30 - 0.50 REF 0.09 - 0.20 (NOTE 3) NOTE: 1. DIMENSIONS ARE IN MILLIMETERS 2. DRAWING NOT TO SCALE 3. DIMENSIONS ARE INCLUSIVE OF PLATING 4. DIMENSIONS ARE EXCLUSIVE OF MOLD FLASH AND METAL BURR 5. MOLD FLASH SHALL NOT EXCEED 0.254mm 6. JEDEC PACKAGE REFERENCE IS MO-193
1.90 BSC
S5 TSOT-23 0302
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15
LT6205/LT6206/LT6207 PACKAGE DESCRIPTION
MS8 Package 8-Lead Plastic MSOP
(Reference LTC DWG # 05-08-1660)
0.889 0.127 (.035 .005)
5.23 (.206) MIN
3.20 - 3.45 (.126 - .136)
0.42 0.038 (.0165 .0015) TYP
0.65 (.0256) BSC
3.00 0.102 (.118 .004) (NOTE 3)
8
7 65
0.52 (.0205) REF
RECOMMENDED SOLDER PAD LAYOUT DETAIL "A" 0 - 6 TYP
4.90 0.152 (.193 .006)
0.254 (.010) GAUGE PLANE
3.00 0.102 (.118 .004) (NOTE 4)
1
23
4
0.53 0.152 (.021 .006) DETAIL "A" 0.18 (.007) SEATING PLANE
1.10 (.043) MAX
0.86 (.034) REF
0.22 - 0.38 (.009 - .015) TYP
NOTE: 1. DIMENSIONS IN MILLIMETER/(INCH) 2. DRAWING NOT TO SCALE 3. DIMENSION DOES NOT INCLUDE MOLD FLASH, PROTRUSIONS OR GATE BURRS. MOLD FLASH, PROTRUSIONS OR GATE BURRS SHALL NOT EXCEED 0.152mm (.006") PER SIDE 4. DIMENSION DOES NOT INCLUDE INTERLEAD FLASH OR PROTRUSIONS. INTERLEAD FLASH OR PROTRUSIONS SHALL NOT EXCEED 0.152mm (.006") PER SIDE 5. LEAD COPLANARITY (BOTTOM OF LEADS AFTER FORMING) SHALL BE 0.102mm (.004") MAX
0.65 (.0256) BSC
0.1016 0.0508 (.004 .002)
MSOP (MS8) 0307 REV F
GN Package 16-Lead Plastic SSOP (Narrow .150 Inch)
(Reference LTC DWG # 05-08-1641)
.045 .005
.189 - .196* (4.801 - 4.978) 16 15 14 13 12 11 10 9
.009 (0.229) REF
.254 MIN
.150 - .165
.229 - .244 (5.817 - 6.198)
.150 - .157** (3.810 - 3.988)
.0165 .0015
.0250 BSC
RECOMMENDED SOLDER PAD LAYOUT
1 .015 .004 x 45 (0.38 0.10) .007 - .0098 (0.178 - 0.249) .016 - .050 (0.406 - 1.270)
NOTE: 1. CONTROLLING DIMENSION: INCHES INCHES 2. DIMENSIONS ARE IN (MILLIMETERS) 3. DRAWING NOT TO SCALE *DIMENSION DOES NOT INCLUDE MOLD FLASH. MOLD FLASH SHALL NOT EXCEED 0.006" (0.152mm) PER SIDE **DIMENSION DOES NOT INCLUDE INTERLEAD FLASH. INTERLEAD FLASH SHALL NOT EXCEED 0.010" (0.254mm) PER SIDE .0532 - .0688 (1.35 - 1.75)
23
4
56
7
8
.004 - .0098 (0.102 - 0.249)
0 - 8 TYP
.008 - .012 (0.203 - 0.305) TYP
.0250 (0.635) BSC
GN16 (SSOP) 0204
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16
LT6205/LT6206/LT6207 REVISION HISTORY
REV C DATE 3/10 DESCRIPTION C Grade Specified Temperature Range Changed in the Order Information Section
(Revision history begins at Rev C)
PAGE NUMBER 2
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Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no representation that the interconnection of its circuits as described herein will not infringe on existing patent rights.
17
LT6205/LT6206/LT6207 TYPICAL APPLICATION
YPBPR to RGB Converter
5V CMPD6001S 36 FMMT3906 4.7k 4
1F
150 R 75
165
499
1 2
16 15 499
150
- +
LT6207
- +
150 Y 75 5 3 14 107 150 B 75
+ -
13
+ -
12
80.6
6 365 PB 95.3 174 499 7
11 499 10 150 150 G 75
PR 133 F3dB 40MHz IS 60mA BLACK LEVELS
1F R = Y + 1.4 * PR B = Y + 1.8 * PB G = Y - 0.34 * PB - 0.71 * PR
0V
-5V
620567 TA03
RELATED PARTS
PART NUMBER LT1253/LT1254 LT1675 LT1809/LT1810 LT6550/LT6551 LT6552 DESCRIPTION Low Cost Dual and Quad Video Amplifiers RGB Multiplexer with Current Feedback Amplifiers 3.3V Triple and Quad Video Amplifiers 3.3V Single Supply Video Difference Amplifier COMMENTS -3dB Bandwidth = 90MHz, Current Feedback 0.1dB Flatness to 100MHz, 80mA Output Drive -3dB Bandwidth = 250MHz, 100MHz Pixel Switching Internal Gain of 2, 110MHz -3dB Bandwidth, Input Common Modes to Ground Differential or Single-Ended Gain Block, 600V/s Slew Rate, Input Common Modes to Ground LT1395/LT1396/LT1397 Single Dual Quad 400MHz Current Feedback Amplifiers
Single/Dual, 180MHz, Rail-to-Rail Input and Output Amplifiers 350V/s Slew Rate, Shutdown, Low Distortion -90dBc at 5MHz
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18 Linear Technology Corporation
(408) 432-1900 FAX: (408) 434-0507
LT 0310 REV C * PRINTED IN USA
1630 McCarthy Blvd., Milpitas, CA 95035-7417
www.linear.com
(c) LINEAR TECHNOLOGY CORPORATION 2003

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