View EL1516_386861.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

(R)
EL1516, EL1516A
Data Sheet May 4, 2005 FN7328.0
Dual Ultra Low Noise Amplifier
The EL1516 is a dual, ultra low noise amplifier, ideally suited to line receiving applications in ADSL, VDSL, and home PNA designs. With low noise specification of just 1.3nV/Hz and 1.5pA/Hz, the EL1516 is perfect for the detection of very low amplitude signals. The EL1516 features a -3dB bandwidth of 350MHz @ AV = -1 and is gain-of-2 stable. The EL1516 also affords minimal power dissipation with a supply current of just 5.5mA per amplifier. The amplifier can be powered from supplies ranging from 5V to 12V. The EL1516A incorporates an enable and disable function to reduce the supply current to 5nA typical per amplifier, allowing the EN pins to float or apply a low logic level will enable the amplifiers. The EL1516 is available in space-saving 8-pin MSOP and industry-standard 8-pin SO packages and the EL1516A is available in a 10-pin MSOP package. All are specified for operation over the -40C to +85C temperature range.
Features
* EL2227 upgrade replacement * Voltage noise of only 1.3nV/Hz * Current noise of only 1.5pA/Hz * Bandwidth (-3dB) of 350MHz @ AV = -1 * Bandwidth (-3dB) of 250MHz @ AV = +2 * Gain-of-2 stable * Just 5.5mA per amplifier * 100mA IOUT * Fast enable/disable (EL1516A only) * 5V to 12V operation * Pb-free available (RoHS compliant)
Applications
* ADSL receivers * VDSL receivers * Home PNA receivers
Pinouts
EL1516 (8-PIN SO, MSOP) TOP VIEW
VOUTA 1 VINA- 2 VINA+ 3 VS- 4 + + 8 VS+ 7 VOUTB 6 VINB5 VINB+
* Ultrasound input amplifiers * Wideband instrumentation * Communications equipment * AGC & PLL active filters * Wideband sensors
EL1516A (10-PIN MSOP) TOP VIEW
VINA+ 1 ENA 2 VS- 3 ENB 4 VINB+ 5 10 VINA9 VOUTA 8 VS+ 7 VOUTB 6 VINB-
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures. 1-888-INTERSIL or 321-724-7143 | Intersil (and design) is a registered trademark of Intersil Americas Inc. Copyright (c) Intersil Americas Inc. 2005. All Rights Reserved. All other trademarks mentioned are the property of their respective owners.
EL1516, EL1516A Ordering Information
PART NUMBER EL1516IY EL1516IY-T13 EL1516IY-T7 EL1516IYZ (See Note) EL1516IYZ-T13 (See Note) EL1516IYZ-T7 (See Note) EL1516IS EL1516IS-T13 EL1516IS-T7 EL1516ISZ (See Note) EL1516ISZ-T13 (See Note) EL1516ISZ-T7 (See Note) EL1516AIY EL1516AIY-T13 EL1516AIY-T7 EL1516AIYZ (See Note) EL1516AIYZT13 (See Note) EL1516AIYZ-T7 (See Note) PACKAGE 8-Pin MSOP 8-Pin MSOP 8-Pin MSOP 8-Pin MSOP (Pb-free) 8-Pin MSOP (Pb-free) 8-Pin MSOP (Pb-free) 8-Pin SO 8-Pin SO 8-Pin SO 8-Pin SO (Pb-free) 8-Pin SO (Pb-free) 8-Pin SO (Pb-free) 10-Pin MSOP 10-Pin MSOP 10-Pin MSOP 10-Pin MSOP (Pb-free) 10-Pin MSOP (Pb-free) 10-Pin MSOP (Pb-free) TAPE & REEL 13" 7" 13" 7" 13" 7" 13" 7" 13" 7" 13" 7" PKG. DWG. # MDP0043 MDP0043 MDP0043 MDP0043 MDP0043 MDP0043 MDP0027 MDP0027 MDP0027 MDP0027 MDP0027 MDP0027 MDP0043 MDP0043 MDP0043 MDP0043 MDP0043 MDP0043
NOTE: Intersil Pb-free products employ special Pb-free material sets; molding compounds/die attach materials and 100% matte tin plate termination finish, which are RoHS compliant and compatible with both SnPb and Pb-free soldering operations. Intersil Pb-free products are MSL classified at Pb-free peak reflow temperatures that meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020.
2
FN7328.0 May 4, 2005
EL1516, EL1516A
Absolute Maximum Ratings (TA = 25C)
Supply Voltage between VS+ and VS- . . . . . . . . . . . . . . . . . . . . .14V Input Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . VS- -0.3V, VS +0.3V Maximum Continuous Output Current . . . . . . . . . . . . . . . . . . . 40mA Maximum Die Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . 150C Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . .-65C to +150C Operating Temperature . . . . . . . . . . . . . . . . . . . . . . .-40C to +85C Power Dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . See Curves
CAUTION: Stresses above those listed in "Absolute Maximum Ratings" may cause permanent damage to the device. This is a stress only rating and operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. IMPORTANT NOTE: All parameters having Min/Max specifications are guaranteed. Typ values are for information purposes only. Unless otherwise noted, all tests are at the specified temperature and are pulsed tests, therefore: TJ = TC = TA
Electrical Specifications
PARAMETER INPUT CHARACTERISTICS VOS TCVOS IB IOS RIN CIN CMIR CMRR AVOL en in
VS+ = +2.5V, VS- = -2.5V, RL = 500 and CL = 3pF to 0V, RF = RG = 620, VCM = 0V, and TA = 25C, unless otherwise specified. CONDITIONS MIN TYP MAX UNIT
DESCRIPTION
Input Offset Voltage Average Offset Voltage Drift Input Bias Current Input Offset Current Input Impedance Input Capacitance Common-Mode Input Range Common-Mode Rejection Ratio Open-Loop Gain Voltage Noise Current Noise
VCM = 0V
-0.2 -0.3
+3
mV V/C
VCM = 0V
6.5 50 2 1.6 -1.3
9 500
A nA M pF
+1.7 105 75 1.24 1.5
V dB dB nV/Hz pA/Hz
for VIN from -4.7V to 5.4V VO = 1.25V f = 100kHz f = 100kHz
85 70
OUTPUT CHARACTERISTICS VOL Output Swing Low RL = 500 RL = 150 VOH Output Swing High RL = 500 RL = 150 ISC Short Circuit Current RL = 10 1.5 1.4 60 1.45 1.37 1.6 1.5 75 1.35 1.25 V V V V mA
POWER SUPPLY PERFORMANCE PSRR IS ON IS OFF Power Supply Rejection Ratio Supply Current Enable (Per Amplifier) Supply Current Disable (Per Amplifier) (EL1516A) IS Temperature Coefficient Operating Range 5 VS is moved from 5.4V to 6.6V No load I+ (DIS) I- (DIS) -19 75 80 5.7 2 -16 32 12 7 5 dB mA A A A/C V
TC IS VS
DYNAMIC PERFORMANCE SR TC SR tS BW1 BW2 Slew Rate SR Temperature Coefficient Settling to 0.1% (AV = +2) -3dB Bandwidth -3dB Bandwidth AV = +2, VO = 1V AV = -1, RF = 100 AV = +2, RF = 100 VO = 1.25V square wave, measured 25%75% 80 110 0.5 25 320 200 V/s V/s/C ns MHz MHz
3
FN7328.0 May 4, 2005
EL1516, EL1516A
Electrical Specifications
PARAMETER HD2 HD3 VS+ = +2.5V, VS- = -2.5V, RL = 500 and CL = 3pF to 0V, RF = RG = 620, VCM = 0V, and TA = 25C, unless otherwise specified. (Continued) CONDITIONS f = 1MHz, VO = 2VP-P, RL = 100 f = 1MHz, VO = 2VP-P, RL = 100 MIN TYP 90 95 MAX UNIT dBc dBc
DESCRIPTION 2nd Harmonic Distortion 3rd Harmonic Distortion
ENABLE (EL1516AIY ONLY) tEN tDIS IIHEN IILEN VIHEN VIHEN Enable Time Disable Time EN Pin Input High Current EN Pin Input Low Current EN Pin Input High Voltage for Powerdown EN Pin Input Low Voltage for Power-up EN = VS+ EN = VS125 336 18 10 VS+ -1 VS- +3 ns ns A nA V V
Electrical Specifications
PARAMETER INPUT CHARACTERISTICS VOS TCVOS IB IOS RIN CIN CMIR CMRR AVOL en in
VS+ = +6V, VS- = -6V, RL = 500 and CL = 3pF to 0V, RF = RG = 620, VCM = 0V, and TA = 25C, unless otherwise specified. CONDITIONS MIN TYP MAX UNIT
DESCRIPTION
Input Offset Voltage Average Offset Voltage Drift Input Bias Current Input Offset Current Input Impedance Input Capacitance Common-Mode Input Range Common-Mode Rejection Ratio Open-Loop Gain Voltage Noise Current Noise
VCM = 0V
0.1 -0.3
3
mV V/C
VCM = 0V
6.5 50 12 1.6 -4.5
9 500
A nA M pF
+5.5 110 80 1.24 1.5
V dB dB nV/Hz pA/Hz
for VIN from -4.7V to 5.4V VO = 2.5V f = 100kHz f = 100kHz
90 75
OUTPUT CHARACTERISTICS VOL Output Swing Low RL = 500 RL = 150 VOH Output Swing High RL = 500 RL = 150 ISC Short Circuit Current RL = 10 4.8 4.5 110 -4.8 -4.6 4.9 4.7 160 -4.7 -4.5 V V V V mA
POWER SUPPLY PERFORMANCE PSRR IS ON IS OFF Power Supply Rejection Ratio Supply Current Enable (Per Amplifier) Supply Current Disable (Per Amplifier) (EL1516A) IS Temperature Coefficient Operating Range 5 VS is moved from 5.4V to 6.6V No load I+ (DIS) I- (DIS) -19 75 85 5.8 2 -16 32 12 7 5 dB mA A A A/C V
TC IS VS
4
FN7328.0 May 4, 2005
EL1516, EL1516A
Electrical Specifications
PARAMETER DYNAMIC PERFORMANCE SR TC SR tS BW1 BW2 HD2 Slew Rate SR Temperature Coefficient Settling to 0.1% (AV = +2) -3dB Bandwidth -3dB Bandwidth 2nd Harmonic Distortion AV = +2, VO = 1V AV = -1, RF = 100 AV = +2, RF = 100 f = 1MHz, VO = 2VP-P, RL = 500 f = 1MHz, VO = 2VP-P, RL = 150 HD3 3rd Harmonic Distortion f = 1MHz, VO = 2VP-P, RL = 500 f = 1MHz, VO = 2VP-P, RL = 150 ENABLE (EL1516AIY ONLY) tEN tDIS IIHEN IILEN VIHEN VIHEN Enable Time Disable Time EN Pin Input High Current EN Pin Input Low Current EN Pin Input High Voltage for Powerdown EN Pin Input Low Voltage for Power-up EN = VS+ EN = VS125 336 17 7 VS+ -1 VS- +3 20 20 ns ns A nA V V VO = 2.5V square wave, measured 25%-75% 90 128 0.5 20 350 250 125 117 115 110 V/s V/s/C ns MHz MHz dBc dBc dBc dBc VS+ = +6V, VS- = -6V, RL = 500 and CL = 3pF to 0V, RF = RG = 620, VCM = 0V, and TA = 25C, unless otherwise specified. (Continued) CONDITIONS MIN TYP MAX UNIT
DESCRIPTION
Typical Performance Curves
4 VS=6V AV=+2 2 RL=500 0 -2 -4 -6 1M RF=1k RF=619 RF=100 RF=348 4 VS=6V RF=348 2 RL=500 0 -2 AV=10 -4 -6 1M AV=5 AV=2
NORMALIZED GAIN (dB)
10M
100M
1G
NORMALIZED GAIN (dB)
10M
100M
1G
FREQUENCY (Hz)
FREQUENCY (Hz)
FIGURE 1. NON-INVERTING FREQUENCY RESPONSE FOR VARIOUS RF
FIGURE 2. NON-INVERTING FREQUENCY RESPONSE (GAIN)
5
FN7328.0 May 4, 2005
EL1516, EL1516A Typical Performance Curves
4 VS=6V AV=+2 2 RL=500 RF=619 0 -2 -4 -6 1M
(Continued)
4 CL=12pF CL=4.7pF CL=22pF NORMALIZED GAIN (dB)
NORMALIZED GAIN (dB)
VS=6V AV=+2 2 RF=619 0 -2 -4 -6 1M RL=50 RL=500 RL=100
CL=1pF CL=0pF
10M
100M
1G
10M
100M
1G
FREQUENCY (Hz)
FREQUENCY (Hz)
FIGURE 3. NON-INVERTING FREQUENCY RESPONSE FOR VARIOUS CL
4
FIGURE 4. NON-INVERTING FREQUENCY RESPONSE FOR VARIOUS RL
4
NORMALIZED GAIN (dB)
VIN=100mVPP VIN=20mVPP
NORMALIZED GAIN (dB)
VS=6V AV=+2 2 RL=500 RF=348 0 -2 -4 -6 1M VIN=500mVPP VIN=1VPP VIN=2VPP
VS=6V AV=-1 2 RL=500 RF=420 0 -2 -4 -6 1M RF=620 RF=1k RF=100
10M
100M
1G
10M
100M
1G
FREQUENCY (Hz)
FREQUENCY (Hz)
FIGURE 5. NON-INVERTING FREQUENCY RESPONSE FOR VARIOUS INPUT SIGNAL LEVELS
FIGURE 6. INVERTING FREQUENCY RESPONSE FOR VARIOUS RF
4
4
NORMALIZED GAIN (dB)
NORMALIZED GAIN (dB)
VS=6V RF=420 2 RL=500 0 -2 -4 -6 1M
VS=6V AV=-1 2 RL=500 RF=420 0 -2
CL=18pF CL=12pF
AV=-1 AV=-2 AV=-10 AV=-5
CL=2pF -4 -6 1M
10M
100M
1G
10M
100M
1G
FREQUENCY (Hz)
FREQUENCY (Hz)
FIGURE 7. INVERTING FREQUENCY RESPONSE (GAIN)
FIGURE 8. INVERTING FREQUENCY RESPONSE FOR VARIOUS CL
6
FN7328.0 May 4, 2005
EL1516, EL1516A Typical Performance Curves
4 VS=6V AV=-1 2 RL=500 RF=420 0 -2 -4 -6 1M VIN=1.4VPP
(Continued)
5
NORMALIZED GAIN (dB)
VIN=280mVPP VIN=20mVPP
NORMALIZED GAIN (dB)
VS=2.5V AV=-1 3 RL=500 1 -1 -3 -5 100K RF=422 RF=100
RF=619 RF=1k
VIN=2.8VPP
10M
100M
1G
1M
10M FREQUENCY (Hz)
100M
1G
FREQUENCY (Hz)
FIGURE 9. INVERTING FREQUENCY RESPONSE FOR VARIOUS SIGNAL LEVELS
FIGURE 10. INVERTING FREQUENCY RESPONSE FOR VARIOUS RF
5
5
NORMALIZED GAIN (dB)
1 -1 AV=-5 -3 -5 100K AV=-10
AV=-2
NORMALIZED GAIN (dB)
VS=2.5V RF=422 3 RL=500
VS=2.5V AV=-1 3 RF=420 1 -1 -3 -5 100K RL=50 RL=100 RL=500
AV=-1
1M
10M FREQUENCY (Hz)
100M
1G
1M
10M FREQUENCY (Hz)
100M
1G
FIGURE 11. INVERTING FREQUENCY RESPONSE FOR VARIOUS AV
5
FIGURE 12. INVERTING FREQUENCY RESPONSE FOR VARIOUS RL
5
NORMALIZED GAIN (dB)
CL=15pF CL=12pF CL=10pF CL=0pF
NORMALIZED GAIN (dB)
VS=2.5V AV=-1 3 RF=420 RL=500 1 -1 -3 -5 100K
CL=18pF
VS=2.55V AV=-1 3 RF=420 RL=500 1 -1 -3 -5 100K VIN=280mVP-P VIN=20mVP-P VIN=1.4VP-P VIN=2.24VP-P
1M
10M FREQUENCY (Hz)
100M
1G
1M
10M FREQUENCY (Hz)
100M
1G
FIGURE 13. INVERTING FREQUENCY RESPONSE FOR VARIOUS CL
FIGURE 14. INVERTING FREQUENCY RESPONSE FOR VARIOUS INPUT SIGNAL LEVELS
7
FN7328.0 May 4, 2005
EL1516, EL1516A Typical Performance Curves
5 VS=2.5V AV=+2 3 RL=500 1 -1 -3 -5 100K RF=348 RF=100 RL=1k
(Continued)
5
NORMALIZED GAIN (dB)
NORMALIZED GAIN (dB)
VS=2.5V RF=348 3 RL=500 1 -1 AV=+5 -3 -5 100K AV=+10 AV=+2
RF=619
1M
10M FREQUENCY (Hz)
100M
1G
1M
10M FREQUENCY (Hz)
100M
1G
FIGURE 15. NON-INVERTING FREQUENCY RESPONSE FOR VARIOUS RF
5
FIGURE 16. NON-INVERTING FREQUENCY RESPONSE FOR VARIOUS AV
5
NORMALIZED GAIN (dB)
CL=18pF CL=10pF
1 -1 -3 -5 100K
NORMALIZED GAIN (dB)
VS=2.5V AV=+2 3 RF=619 RL=500
CL=27pF
VS=2.5V AV=+2 3 RL=619 1 -1 RF=500 -3 -5 100K RL=50 RF=100
CL=3.3pF CL=0pF
1M
10M FREQUENCY (Hz)
100M
1G
1M
10M FREQUENCY (Hz)
100M
1G
FIGURE 17. NON-INVERTING FREQUENCY RESPONSE FOR VARIOUS CL
5
FIGURE 18. NON-INVERTING FREQUENCY RESPONSE FOR VARIOUS RL
-30 -40 DISTORTION (dB)
NORMALIZED GAIN (dB)
VS=2.55V RF=348 3 RL=500 VIN=20mVP-P 1 -1 -3 -5 100K VIN=100mVP-P VIN=200mVP-P VIN=500mVP-P VIN=1VP-P 1M 10M FREQUENCY (Hz) 100M 1G
VS=6V RF=RG=619 RL=100
-50 -60 -70 -80 -90 -100 0 2 4 6 2ND HD 3RD HD 8 10
OUTPUT SWING (VPP)
FIGURE 19. NON-INVERTING FREQUENCY RESPONSE FOR VARIOUS INPUT SIGNAL LEVELS
FIGURE 20. 1MHz 2ND AND 3RD HARMONIC DISTORTION vs OUTPUT SWING
8
FN7328.0 May 4, 2005
EL1516, EL1516A Typical Performance Curves
-70 VO=2VPP -75 VS=6V RF=RG=620 RL=500 -80 -85 -90 -95 -100 -105 10K FREQUENCY (Hz) 100K 200K
(Continued)
-20 HARMONIC DISTORTION (dBc)
THD + NOISE (dBc)
VS=2.5V -30 AV=+2 RF=RG=619 -40 RL=100 VOUT=2VP-P -50 -60 -70 -80 -90 -100 500K 1M 3RD HD 10M 20M THD 2ND HD
FUNDAMENTAL FREQUENCY (Hz)
FIGURE 21. THD + NOISE vs FREQUENCY
FIGURE 22. HARMONIC DISTORTION vs FREQUENCY
-30 -40 -50 THD (dBc) -60 -70 -80 -90 -100 0.2 THD-FIN=1MHz VS=2.5V AV=+2 RF=RG=619 RL=500 1.7 2.2 2.7 3.2 SUPPLY CURRENT (mA) THD-FIN=10MHz
12 10 8 6 4 2 0 0 1 2 3 4 5 6 SUPPLY VOLTAGE (V)
0.7
1.2
OUTPUT VOLTAGE (VP-P)
FIGURE 23. THD vs OUTPUT VOLTAGE
FIGURE 24. SUPPLY CURRENT vs SUPPLY VOLTAGE
250 200 150 100 50 0 2 AV=-1 AV=-2 AV=+5 AV=+10 3 4 5 6 AV=-5 AV=-10 AV=+2
-10
3dB BANDWIDTH (MHz)
VS=6V AV=+2 -30 RF=620 RL=500 GAIN (dB) -50 BaaaA -70 AaaaB
-90
-110 100K
1M
10M FREQUENCY (Hz)
100M
1G
SUPPLY VOLTAGE (V)
FIGURE 25. 3dB BANDWIDTH vs SUPPLY VOLTAGE
FIGURE 26. CHANNEL-TO-CHANNEL ISOLATION vs FREQUENCY
9
FN7328.0 May 4, 2005
EL1516, EL1516A Typical Performance Curves
-30 VS=6V RL=1k
(Continued)
-10
-50 CMRR (dB) PSRR (dB)
VS=6V AV=+1 -30 RL=500 -50 PSRR+ -70 -90 -110 100K PSRR-
-70
-90
-110
-130 100K
1M
10M FREQUENCY (Hz)
100M
1G
1M
10M FREQUENCY (Hz)
100M
1G
FIGURE 27. CMRR
FIGURE 28. PSRR
100 VOLTAGE NOISE (nV/Hz) 100K 1M FREQUENCY (Hz) 100M OUTPUT IMPEDANCE ()
12 10 8 6 4 2 0 10
10
1
-0.1
0.01 10K
10M
100
1K FREQUENCY (Hz)
10K
100K
FIGURE 29. CLOSED LOOP OUTPUT IMPEDANCE vs FREQUENCY
FIGURE 30. VOLTAGE NOISE
0.07 DIFF GAIN (%), DIFF PHASE ()
VS=6V 0.06 AV=2 RF=620 0.05 0.04
DIFF GAIN
VS=6V RL=500 RF=620
DIFF PHASE 0.03 0.02 0.01 0 1 2 3 4
0.5V/DIV
100ns/DIV
NUMBER OF 150 LOADS
FIGURE 31. DIFFERENTIAL GAIN/PHASE
FIGURE 32. LARGE SIGNAL STEP RESPONSE
10
FN7328.0 May 4, 2005
EL1516, EL1516A Typical Performance Curves
(Continued)
VS=2.5V RL=500 RF=620
VS=6V RL=500 RF=620
0.5V/DIV
20mV/DIV
100ns/DIV
100ns/DIV
FIGURE 33. LARGE SIGNAL STEP RESPONSE
FIGURE 34. SMALL SIGNAL STEP RESPONSE
VS=2.5V RL=500 RF=620
10 9 8 IS (mA) 7 6 5 4 3
20mV/DIV
100ns/DIV
2 -40 -20
0
20
40
60
80 100 120 140 150
DIE TEMPERATURE (C)
FIGURE 35. SMALL SIGNAL STEP RESPONSE
FIGURE 36. SUPPLY CURRENT vs TEMPERATURE
500 450 400 350 300 250 200 -40 -20 SLEW RATE (V/s) 0 20 40 60 80 100 120 140 150
200
-3dB BANDWIDTH (MHz)
AV=+2V VO=2VPP 160 RF=200 RL=500 120
80
40
0 -40 -20
0
20
40
60
80 100 120 140 150
DIE TEMPERATURE (C)
DIE TEMPERATURE (C)
FIGURE 37. -3dB BANDWIDTH vs TEMPERATURE
FIGURE 38. SLEW RATE vs TEMPERATURE
11
FN7328.0 May 4, 2005
EL1516, EL1516A Typical Performance Curves
30 VS=6V 50mVOPP
(Continued)
0 -50 -100 VOS (V) -150 -200 -250 -300 -350
SETTLING TIME (ns)
26
22
18
14
10 -40 -20
0
20
40
60
80 100 120 140 150
-400 -40 -20
0
20
40
60
80 100 120 140 150
DIE TEMPERATURE (C)
DIE TEMPERATURE (C)
FIGURE 39. 0.1% SETTLING TIME vs TEMPERATURE
FIGURE 40. VOS vs TEMPERATURE
JEDEC JESD51-3 LOW EFFECTIVE THERMAL CONDUCTIVITY TEST BOARD
8 POWER DISSIPATION (W)
1.2 1 0.8 0.6 0.4 0.2 0
7 IBIAS (A)
781mW 607mW MSOP8/10 JA=206C/W SO8 JA=160C/W
6
5
4 -40 -20
0
20
40
60
80 100 120 140 150
0
25
50
75 85 100
125
150
DIE TEMPERATURE (C)
AMBIENT TEMPERATURE (C)
FIGURE 41. IBIAS CURRENT vs TEMPERATURE
FIGURE 42. PACKAGE POWER DISSIPATION vs AMBIENT TEMPERATURE
1.8 1.6 POWER DISSIPATION (W) 1.4
JEDEC JESD51-7 HIGH EFFECTIVE THERMAL CONDUCTIVITY TEST BOARD
1.2 1.136W 1 1.087W 0.8 0.6 0.4 0.2 0 0 25 50
SO8 JA=110C/W
MSOP8/10 JA=115C/W
75 85 100
125
150
AMBIENT TEMPERATURE (C)
FIGURE 43. PACKAGE POWER DISSIPATION vs AMBIENT TEMPERATURE
12
FN7328.0 May 4, 2005
EL1516, EL1516A Pin Descriptions
EL1516 (8-PIN SO & 8-PIN MSOP) 1 EL1516A (10-PIN MSOP) 9 PIN NAME VOUTA PIN FUNCTION Output EQUIVALENT CIRCUIT
VS+
VOUT
CIRCUIT 1
2
10
VINA-
Input
VS+
VIN+
VIN-
VSCIRCUIT 2
3 4 5 6 7 8
1 3 5 6 7 8 2, 4
VINA+ VSVINB+ VINBVOUTB VS+ ENA, ENB
Input Supply Input Input Output Supply Enable
Reference Circuit 2
Reference Circuit 2 Reference Circuit 1
VS+
EN 570K VSCIRCUIT 3
13
FN7328.0 May 4, 2005
EL1516, EL1516A Applications Information
Product Description
The EL1516 is a dual voltage feedback operational amplifier designed especially for DMT ADSL and other applications requiring very low voltage and current noise. It also features low distortion while drawing moderately low supply current. The EL1516 uses a classical voltage-feedback topology which allows it to be used in a variety of applications where current-feedback amplifiers are not appropriate because of restrictions placed upon the feedback element used with the amplifier. The conventional topology of the EL1516 allows, for example, a capacitor to be placed in the feedback path, making it an excellent choice for applications such as active filters, sample-and-holds, or integrators. EL1516 to remain in the safe operating area. These parameters are related as follows:
T JMAX = T MAX + ( JA x PD MAXTOTAL )
where: * PDMAXTOTAL is the sum of the maximum power dissipation of each amplifier in the package (PDMAX) * PDMAX for each amplifier can be calculated as follows:
V OUTMAX PDMAX = 2 x V S x I SMAX + ( V S - V OUTMAX ) x --------------------------R
L
where: * TMAX = Maximum ambient temperature * JA = Thermal resistance of the package * PDMAX = Maximum power dissipation of 1 amplifier * VS = Supply voltage * IMAX = Maximum supply current of 1 amplifier * VOUTMAX = Maximum output voltage swing of the application * RL = Load resistance To serve as a guide for the user, we can calculate maximum allowable supply voltages for the example of the video cabledriver below since we know that TJMAX = 150C, TMAX = 75C, ISMAX = 7.7mA, and the package JAs are shown in Table 1. If we assume (for this example) that we are driving a back-terminated video cable, then the maximum average value (over duty-cycle) of VOUTMAX is 1.4V, and RL = 150, giving the results seen in Table 1.
TABLE 1. PART EL1516IS PACKAGE SO8 MSOP8 MSOP10 JA 110C/W 115C/W 115C/W MAX PDISS @ TMAX 0.406W @ 85C 0.400W @ 85C 0.400W @ 85C MAX VS
ADSL CPE Applications
The low noise EL1516 amplifier is specifically designed for the dual differential receiver amplifier function with ADSL transceiver hybrids as well as other low-noise amplifier applications. A typical ADSL CPE line interface circuit is shown in Figure 44. The EL1516 is used in receiving DMT down stream signal. With careful transceiver hybrid design and the EL1516 1.4nV/Hz voltage noise and 1.5pA/Hz current noise performance, -140dBm/Hz system background noise performance can be easily achieved.
DRIVER INPUT + RG RF + RF RECEIVE OUT + + + RF R RIN ROUT LINE ROUT RF ZLINE LINE +
RECEIVE AMPLIFIERS
R RIN
RECEIVE OUT -
EL1516IY EL1516AIY
FIGURE 44. TYPICAL LINE INTERFACE CONNECTION
Power Dissipation
With the wide power supply range and large output drive capability of the EL1516, it is possible to exceed the 150C maximum junction temperatures under certain load and power supply conditions. It is therefore important to calculate the maximum junction temperature (TJMAX) for all applications to determine if power supply voltages, load conditions, or package type need to be modified for the
Single-Supply Operation
The EL1516 has been designed to have a wide input and output voltage range. This design also makes the EL1516 an excellent choice for single-supply operation. Using a single positive supply, the lower input voltage range is within 1.2V of ground (RL = 500), and the lower output voltage range is within 875mV of ground. Upper input voltage range reaches 3.6V, and output voltage range reaches 3.8V with a 5V supply and RL = 500. This results in a 2.625V output swing on a single 5V supply. This wide output voltage range also
14
FN7328.0 May 4, 2005
EL1516, EL1516A
allows single-supply operation with a supply voltage as high as 12V. output drive capability makes the EL1516 an ideal choice for RF, IF and video applications.
Gain-Bandwidth Product and the -3dB Bandwidth
The EL1516 has a gain-bandwidth product of 300MHz while using only 6mA of supply current per amplifier. For gains greater than 2, their closed-loop -3dB bandwidth is approximately equal to the gain-bandwidth product divided by the noise gain of the circuit. For gains less than 2, higherorder poles in the amplifiers' transfer function contribute to even higher closed loop bandwidths. For example, the EL1516 has a -3dB bandwidth of 350MHz at a gain of +2, dropping to 80MHz at a gain of +5. It is important to note that the EL1516 has been designed so that this "extra" bandwidth in low-gain applications does not come at the expense of stability. As seen in the typical performance curves, the EL1516 in a gain of +2 only exhibits 0.5dB of peaking with a 1000 load.
Printed-Circuit Layout
The EL1516 is well behaved, and easy to apply in most applications. However, a few simple techniques will help assure rapid, high quality results. As with any high-frequency device, good PCB layout is necessary for optimum performance. Ground-plane construction is highly recommended, as is good power supply bypassing. A 0.1F ceramic capacitor is recommended for bypassing both supplies. Lead lengths should be as short as possible, and bypass capacitors should be as close to the device pins as possible. For good AC performance, parasitic capacitances should be kept to a minimum at both inputs and at the output. Resistor values should be kept under 5k because of the RC time constants associated with the parasitic capacitance. Metal-film and carbon resistors are both acceptable, use of wire-wound resistors is not recommended because of their parasitic inductance. Similarly, capacitors should be low-inductance for best performance.
Output Drive Capability
The EL1516 has been designed to drive low impedance loads. It can easily drive 6VPP into a 100 load. This high
MSOP Package Outline Drawing
15
FN7328.0 May 4, 2005
EL1516, EL1516A SO Package Outline Drawing
NOTE: The package drawing shown here may not be the latest version. To check the latest revision, please refer to the Intersil website at http://www.intersil.com/design/packages/index.asp
All Intersil U.S. products are manufactured, assembled and tested utilizing ISO9000 quality systems. Intersil Corporation's quality certifications can be viewed at www.intersil.com/design/quality
Intersil products are sold by description only. Intersil Corporation reserves the right to make changes in circuit design, software and/or specifications at any time without notice. Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be accurate and reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Intersil or its subsidiaries.
For information regarding Intersil Corporation and its products, see www.intersil.com 16
FN7328.0 May 4, 2005

▲Up To Search▲

Price & Availability of EL1516

	To Download EL1516 Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .