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MIC6211
Micrel
MIC6211
IttyBittyTM Operational Amplifier Preliminary Information
General Description
The MIC6211 IttyBittyTM op amp is a general-purpose, highperformance, single- or split-supply, operational amplifier in a space-saving, surface-mount package. The MIC6211 operates from 4V to 32V, single or differential (split) supply. The input common-mode range includes ground. The device features a 2.5MHz unity gain bandwidth, 6V/s slew rate, and is internally unity-gain compensated. Inputs are protected against reverse polarity (input voltage less than V-) and ESD (electrostatic discharge). Output is current limited for both sourcing and sinking. Output short circuits of unlimited duration are allowed, provided the power dissipation specification is not exceeded. The MIC6211 is available in the tiny, 5-lead SOT-23-5 surface-mount package.
Features
* * * * * * 4V to 32V operation Small footprint package Unity gain stable 2.5 MHz unity gain bandwidth 6V/s typical slew rate Short circuit protected
Applications
* Analog blocks * Active filtering
Ordering Information
Part Number MIC6211BM5 Temperature Range -40C to +85C Package SOT-23-5
Pin Configuration
IN+
3
Functional Configuration
V- OUT
2 1
IN+
3
V- OUT
2 1
A11
4 5
Part Identification
4 5
IN-
V+
IN-
V+
SOT-23-5 (M5)
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 Inverting Input Positive Supply
Micrel, Inc. * 1849 Fortune Drive * San Jose, CA 95131 * USA * tel + 1 (408) 944-0800 * fax + 1 (408) 944-0970 * http://www.micrel.com
June 1999
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MIC6211
MIC6211
Micrel
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 ...............................
Operating Ratings
Supply Voltage .................................................... 4V to 32V Ambient Temperature Range ..................... -40C to +85C SOT-23-5 Thermal Resistance (JA) ..................... 220C/W (mounted to printed circuit board)
Electrical Characteristics (Differential Supply)
V+ = +15V, V- = -15V, VCM = 0V; RL = 2k; TA = 25C, bold values indicate -40C TA +85C, TA = TJ; unless noted Symbol VOS TCVOS IB IOS VCM CMRR PSRR AVOL VOUT BW SR ISC IS Parameter Input Offset Voltage Average Input Offset Drift Input Bias Current Input Offset Current Input Voltage Range Common Mode Rejection Ratio Power Supply Rejection Ratio Large Signal Voltage Gain Maximum Output Voltage Swing Bandwidth Slew Rate Output Short Circuit Current Supply Current Sourcing or sinking 30 VCM = +13.5V, -15.0V VS = 2.5V to 15V VO = 10V +13.5 -15.0 65 65 25 12.5 Note 1 Condition Min Typ 2 7 50 8 +13.8 -15.3 100 110 180 14 2.5 6 50 1.3 2.0 250 30 Max 7 Units mV V/C nA nA V V dB dB V/mV V MHz V/s mA mA
Electrical Characteristics (Single Supply)
V+ = +5V, V- = 0V, VCM = 0.1V; TA = 25C, bold values indicate -40C TA +85C, TA = TJ; unless noted Symbol VOS TCVOS IB IOS VCM CMRR PSRR AVOL VOUT ISC IS
Note 1:
Parameter Input Offset Voltage Average Input Offset Drift Input Bias Current Input Offset Current Input Voltage Range Common Mode Rejection Ratio Power Supply Rejection Ratio Large Signal Voltage Gain Maximum Output Voltage Swing Output Short Circuit Current Supply Current
Condition
Min
Typ 2
Max 7
Units mV V/C
Note 1
7 65 8 +3.5 0 +3.7 -0.3 70 105 170 +4.0 +1.0 40 1.2 1.8 +1.2 250 30
nA nA V V dB dB V/mV V V mA mA
VCM = 0V to 3.5V VS = 2.5V to 15V VO = 1.5V to 3.5V, RL = 2k RL = 10k to GND RL = 10k to +5V Sourcing or sinking
45 65 15 +3.8 20
General Note: Devices are ESD protected; however, handling precautions are recommended. Not production tested.
MIC6211
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June 1999
MIC6211
Micrel
Typical Characteristics
Supply Current vs. Temperature
1.4 INPUT BIAS CURRENT (nA) SUPPLY CURRENT (mA) VS = 15V 1.3
80 70 60 50 40 30 -40 -20 0 20 40 60 80 100 TEMPERATURE (C) V = 15V
S
INPUT OFFSET CURRENT (nA)
90
Input Bias Current vs. Temperature
20
Input Offset Current vs. Temperature
15 VS = 15V 10
VS = 5V
1.2 V = 5V
S
1.1
5
VS = 5V
1.0 -40 -20 0 20 40 60 80 100 TEMPERATURE (C)
0 -40 -20 0 20 40 60 80 100 TEMPERATURE (C)
1.5 SUPPLY CURRENT (mA)
Supply Current vs. Supply Voltage
120 100
VOLTAGE GAIN (dB)
Voltage Gain vs. Frequency
30
Gain and Phase vs. Frequency
45 90 135
PHASE ()
VS = 15V
VOLTAGE GAIN (dB)
20 10
PHASE
1.0
80 60 40 20 0
10,000 10 100 1,000 0.1
72 0 -10 VS = 15V -20 0.1 1.0 FREQUENCY (MHz) 270 10 GAIN 180 225
0.5
0
5 10 15 20 25 SUPPLY VOLTAGE (V)
30
0.01
FREQUENCY (kHz)
Large-Signal Transient Response
1
0
-20
Small-Signal Transient Response
OUTPUT VOLTAGE
OUTPUT VOLTAGE
+10V GND -10V
AV = +1 RL = 2k CL = 10pF VS = 15V
+50mV GND -50mV
AV = +1 RL = 2k CL = 100pF VS = 15V
INPUT VOLTAGE
+10V GND -10V 2s/DIV
INPUT VOLTAGE
+50mV GND -50mV 500ns/DIV
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MIC6211
MIC6211
Micrel
PEAK-TO-PEAK OUTPUT VOLTAGE (V)
30 25 20 15 10 5 0 10
Large-Signal Frequency Response
VS = 15V RL = 2k TA = 25C
110 100 CMRR (dB)
Common Mode Rejection Ratio vs. Frequency
VS = 15V
130 120 110
Power Supply Rejection Ratio vs. Frequency
V = 15V
S
PSRR (dB)
90 80 70 60
100 90 80 70 60 -PSRR
+PSRR
100 1000 3000 FREQUENCY (kHz)
50 0.01
0.1 1 10 100 FREQUENCY (kHz)
1000
50 0.001 0.01 0.1 1 10 FREQUENCY (kHz)
100
SHORT CIRCUIT CURRENT (mA)
65 60 55 50 45
Short Circuit Current vs. Temperature
VS = 15V
40 -40 -20 0 20 40 60 80 100 TEMPERATURE (C)
0.1Hz to 10Hz Noise
VS = 15V
Wideband Noise VS = 15V
NOISE VOLTAGE (4V/DIV)
1s/DIV
NOISE VOLTAGE (5V/DIV)
5ms/DIV
MIC6211
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MIC6211
Micrel
Functional Diagram
V+
5
20 -IN
4 1
VOUT
20 CC
3
+IN
2
MIC6211
V- (GND)
June 1999
5
MIC6211
MIC6211
Micrel
High-Pass Filter Figure 4 is an active filter with 20dB (10x) gain and a lowfrequency cutoff of 10Hz. The high gain-bandwidth of the MIC6211 allows operation beyond 100kHz. This filter configuration is designed for split supplies.
0.1F
Applications Information
Common-Mode Range and Output Voltage The input common-mode range of the MIC6211 is from the negative supply voltage to 1.2V below the positive supply voltage. The output voltage swings within 1V of the positive and negative supply voltage. Voltage Buffer Figure 1 shows a standard voltage follower/buffer. The output voltage equals the input voltage. This circuit is used to buffer a high impedance signal source. This circuit works equally well with single or split supplies.
VIN
3 1
332k 1F VIN 7.5k 1F
4 1 3
VOUT
VOUT
Figure 4a. High-Pass Filter
VOUT (dB)
4
30 20 10 0
VOUT = VIN
Figure 1. Voltage Buffer Inverting Amplifier Figure 2 shows an inverting amplifier with its gain set by the ratio of two resistors. This circuit works best with split supplies, but will perform with single supply systems if the noninverting input (+ input) is biased up above ground.
R1 R2
4 1 3
10
1 10 1k 100k FREQUENCY (Hz)
Figure 4b. High-Pass Filter Response Summing Amplifier Figure 5 is a single supply summing amplifier. In this configuration, the output voltage is the sum of V1 and V2, minus the sum of V3 and V4. By adding more resistors to either the inverting or non-inverting input, more voltages may be summed. This single supply version has one important restriction: the sum of V1 and V2 must exceed the sum of V3 and V4, since the output voltage cannot pull below zero with only a single supply.
V1 V2 R R R R V3 R V4 All resistors are equal. VOUT = V1 + V2 - V3 - V4
3 1 4
VIN
VOUT
VOUT
VIN
R1 R2
Figure 2. Inverting Amplifer Voltage Controlled Current Sink Figure 3 is a voltage controlled current sink. A buffer transistor forces current through a programming resistor until the feedback loop is satisfied. Current flow is VIN/R. This circuit works with single or split supplies.
VIN
3 1
100,000
10,000
100
1,000
-10 -20
1
VOUT
R
V1 + V2 > V3 + V4 for single supply operation
4
Figure 5. Summing Amplifier
I VIN R
R
Figure 3. Voltage Controlled Current Sink
MIC6211
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June 1999
MIC6211
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)
June 1999
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MIC6211
MIC6211
Micrel
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) 1999 Micrel Incorporated
MIC6211
8
June 1999

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