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MIC6251/6252
Micrel
MIC6251/6252
IttyBittyTM GainBlockTM Amplifiers Preliminary Information
General Description
The MIC6251 and MIC6252 are IttyBittyTM GainBlockTM amplifiers for use as follows: MIC6251 ................................ +2, +1, -1 gain amplifier MIC6252 .................................. +0.5, +1 gain amplifier; average value amplifier The MIC6251 and MIC6252 amplifiers operate from 4V to 32V. Both can use single or split supplies. These amplifiers feature internal, well-matched, gain-setting resistors and an input common-mode range that includes the negative supply (ground). The MIC6251/2 is available in the tiny SOT-23-5 surface mount package.
Features
* * * * * * 4V to 32V operation Small footprint package Internally compensated 2MHz bandwidth 6V/s typical slew rate Short circuit protected
Applications
* Analog building blocks * Summing amplifier * Gain block
Ordering Information
Part Number MIC6251BM5 MIC6252BM5 Marking A51 A52 Temperature -40C to +85C -40C to +85C Range Package SOT-23-5 SOT-23-5
Functional Configuration
IN+ 3 20k V- 2 OUT 1
20k 20k 20k 20k 4 IN- 5 V+ IN+ 3 V- 2 OUT 1
20k 20k 4 IN- 20k 5 V+
MIC6251
MIC6252
Pin Configuration
IN+
3
V- OUT
2 1
Part Number MIC6251BM5 MIC6252BM5
Identification A51 A52
4
Axx
5
Part Identification
IN-
V+
SOT-23-5 (M5)
IttyBitty and GainBlock are a trademarks of Micrel, Inc. Micrel, Inc. * 1849 Fortune Drive * San Jose, CA 95131 * USA * tel + 1 (408) 944-0800 * fax + 1 (408) 944-0970 * http://www.micrel.com
July 1998
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MIC6251/6252
MIC6251/6252
Micrel
Pin Description
Pin Number 1 2 3 4 5 Pin Name OUT V- IN+ IN- V+ Pin Function Amplifier Output Negative Supply: Negative supply for split supply application or ground for single supply application. Noninverting Input: See "Electrical Characteristics: Note 1." Inverting Input: See "Electrical Characteristics: Note 1." Positive Supply
Absolute Maximum Ratings
Supply Voltage (VV+ - VV-) ............................. 36V or 18V Differential Input Voltage (VIN+ - VIN-) ....................... 36V Input Voltage (VIN+, VIN-) ........................ VV- - 0.3V to VV+ Output Short Circuit Current Duration ............................... Junction Temperature (TJ) ........................................ 150C Storage Temperature (TS) ....................... -65C to +150C Lead Temperature (soldering, 10 sec.) ..................... 260C ESD, Note 4 ............................................................... [TBD]
Operating Ratings
Supply Voltage .................................................... 4V to 32V Ambient Temperature Range ..................... -40C to +85C SOT-23-5 Thermal Resistance (JA) ..................... 325C/W
Electrical Characteristics (Differential Supply)
VV+ = +15V, VV- = -15V; VCM = 0V, Note 1; TA = 25C, bold values indicate -40C TA +85C, TA = TJ; unless noted. Symbol GE GNL VOS TCVOS IB VCM CMRR PSRR VOUT BW SR IS
Note 1: Note 2: Note 3: Note 4:
Parameter Gain Error Gain Non-linearity Offset Voltage Average Offset Drift Input Bias Current Input Voltage Range, Differential Input Volt. Range, Common Mode Common Mode Rejection Ratio Power Supply Rejection Ratio Maximum Output Voltage Swing Bandwidth Slew Rate Supply Current
Condition MIC6251: AV = 2, VO = 10V MIC6252: AV = 0.5, VO = 10V MIC6251: AV = 2, VO = 10V MIC6252: AV = 0.5, VO = 10V MIC6251: Referred to output MIC6252: Referred to output
Min
Typ 0.3 0.3 0.01 0.01 4 2 7 50
Max 0.5 0.5
Units % % % %
14 7
mV mV V/C
250
nA V V dB dB V MHz V/s
Note 3 13.5 VCM = 27V, -13.5V to +13.5V VS = 25V, 15V to 2.5V RL = 2k 65 65 12.5
25 13.8 100 110 14 2 6 1.3 2.0
mA
General Note : Devices are ESD protected; however, handling precautions are recommended. IN+ and IN- pins on the MIC6252 are interchangeable. Gain setting resistors are ratio-matched but have a 20% absolute tolerance Limit input current to 1mA. Human body model, 1.5k in series with 100pF.
MIC6251/6252
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July 1998
MIC6251/6252
Micrel
Typical Characteristics
Supply Current vs. Temperature
1.4 SUPPLY CURRENT (mA) SUPPLY CURRENT (mA) VS = 15V 1.3
1.5
Supply Current vs. Supply Voltage
70 INPUT BIAS CURRENT (nA) 60 50 40
Input Bias Current vs. Temperature
1.0 TA = 25C 0.5
1.2
1.1
VS = 15V 30 20 -40 -20 0 20 40 60 80 100 TEMPERATURE (C)
1.0 -40 -20 0 20 40 60 80 100 TEMPERATURE (C)
0
0
5 10 15 20 25 SUPPLY VOLTAGE (V)
30
PEAK-TO-PEAK OUTPUT VOLTAGE (V)
MIC6251 Gain vs. Frequency
10 5 0 GAIN (dB) -5 -10 -15 -20 -25 0.01 0.1 1 10 FREQUENCY (MHz) 100 G = +2 G = +1 VS = 15V TA = 25C
30 25 20 15 10
Undistorted Output Swing vs. Frequency
VS = 15V RL = 2k G = +2 TA = 25C
Common-Mode Rejection Ratio vs. Frequency
110 100 CMRR (dB) 90 80 70 60 VS = 15V G = +2 TA = 25C
5 0 10 100 1000 3000 FREQUENCY (kHz)
50 0.01
0.1 1 10 100 FREQUENCY (kHz)
1000
Power Supply Rejection Ratio vs. Frequency
120 110
SHORT CIRCUIT CURRENT (mA)
130
VS = 15V TA = 25C
65 60 55 50 45
Short Circuit Current vs. Temperature
VS = 15V
PSRR (dB)
100 90 80 70 60 50 0.001 0.01 0.1 1 10 FREQUENCY (kHz) 100 -PSRR +PSRR
40 -40 -20 0 20 40 60 80 100 TEMPERATURE (C)
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MIC6251/6252
MIC6251/6252
MIC6251 Large-Signal Transient Response MIC6251 Large-Signal Transient Response
Micrel
+10V
VS = 15V RL = 2k CL = 10pF G = +2
+10V
VS = 15V RL = 2k CL = 10pF G = +1
GND
GND
-10V 2s/DIV
-10V 2s/DIV
MIC6251 Large-Signal Transient Response
MIC6252 Large-Signal Transient Response
VS = 15V RL = 2k CL = 10pF G = -1 +10V
+5V
VS = 15V RL = 2k CL = 10pF G = 0.5
GND
GND
-10V -5V 2s/DIV 2s/DIV
MIC6251 Small-Signal Transient Response
+100mV
VS = 15V RL = 2k CL = 100pF G = +2
GND
-100mV
500ns/DIV
MIC6251/6252
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July 1998
MIC6251/6252
Micrel
MIC6251/2 0.1Hz to 10Hz Noise Gain = +1
VS = 15V
MIC6251/2 Wideband Noise Gain +1 VS = 15V
NOISE VOLTAGE (4V/DIV)
1s/DIV
NOISE VOLTAGE (5V/DIV)
5ms/DIV
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MIC6251/6252
MIC6251/6252
Micrel
Functional Configurations
Figures 1 through 6 illustrate basic MIC6251 and MIC6252 GainBlockTM configurations.
+4V to +32V V+ 20k VIN IN+
3 5
MIC6251
OUT 20k
1
VOUT = 2VIN
IN-
4
20k V-
2
20k
Figure 1. MIC6251 AV = 2 Amplifier
+4V to +32V V+ 20k VIN IN+
3 5
MIC6251
OUT 20k
1
VOUT = VIN
IN-
4
20k V-
2
20k
Figure 2. MIC6251 Voltage Follower
+2V to +16V V+ 20k IN+
3 5
MIC6251
OUT 20k
1
VOUT = -VIN
VIN
IN-
4
20k GND
3
20k V-
2
-2V to -16V
Figure 3. MIC6251 Inverting Unity-Gain Circuit
MIC6251/6252
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July 1998
MIC6251/6252
Micrel
+4V to +32V V+ VIN IN+
3 5
MIC6252
20k 20k 20k 20k V-
2
OUT
1
VOUT =
VIN 2
IN-
4
Figure 4. MIC6252 AV = 0.5 Amplifier
+4V to +32V V+ VIN IN+
3 5
MIC6252
20k 20k 20k 20k V-
2
OUT
1
VOUT = VIN
IN-
4
Figure 5. MIC6252 Voltage Follower
+4V to +32V V+ VIN1 IN+
3 5
MIC6252
20k 20k 20k 20k V-
2
OUT
1
VOUT =
VIN1 + VIN2 2
VIN2
IN-
4
Figure 6. MIC6252 Voltage Averager
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MIC6251/6252
MIC6251/6252
Micrel
Package Information
1.90 (0.075) REF 0.95 (0.037) REF
1.75 (0.069) 1.50 (0.059)
3.00 (0.118) 2.60 (0.102)
DIMENSIONS: MM (INCH) 3.02 (0.119) 2.80 (0.110) 1.30 (0.051) 0.90 (0.035) 10 0 0.15 (0.006) 0.00 (0.000) 0.20 (0.008) 0.09 (0.004)
0.50 (0.020) 0.35 (0.014)
0.60 (0.024) 0.10 (0.004)
SOT-23-5 (M5)
MICREL INC. 1849 FORTUNE DRIVE SAN JOSE, CA 95131
TEL
USA
+ 1 (408) 944-0800
FAX
+ 1 (408) 944-0970
WEB
http://www.micrel.com
This information is believed to be accurate and reliable, however no responsibility is assumed by Micrel for its use nor for any infringement of patents or other rights of third parties resulting from its use. No license is granted by implication or otherwise under any patent or patent right of Micrel Inc. (c) 1998 Micrel Incorporated
MIC6251/6252
8
July 1998

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