MICREL MIC6211

MIC6211
Micrel
MIC6211
IttyBitty™ Operational Amplifier
Preliminary Information
General Description
Features
The MIC6211 IttyBitty™ op amp is a general-purpose, highperformance, single- or split-supply, operational amplifier in
a space-saving, surface-mount package.
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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/µs
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.
4V to 32V operation
Small footprint package
Unity gain stable
2.5 MHz unity gain bandwidth
6V/µs typical slew rate
Short circuit protected
Applications
• Analog blocks
• Active filtering
Ordering Information
Pin Configuration
Part Number
Temperature Range
Package
MIC6211BM5
–40°C to +85°C
SOT-23-5
Functional Configuration
IN+
V– OUT
3
2
IN+
1
3
V– OUT
2
1
Part
Identification
A11
4
5
4
5
IN–
V+
IN–
V+
SOT-23-5 (M5)
Pin Description
Pin Number
Pin Name
Pin Function
1
OUT
2
V–
Negative Supply: Negative supply for split supply application or ground for
single supply application.
3
IN+
Noninverting Input
4
IN–
Inverting Input
5
V+
Positive Supply
Amplifier Output
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
1
MIC6211
MIC6211
Micrel
Absolute Maximum Ratings
Operating 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 ...............................∞
Supply Voltage .................................................... 4V to 32V
Ambient Temperature Range ..................... –40°C to +85°C
SOT-23-5 Thermal Resistance (θJA) ..................... 220°C/W
(mounted to printed circuit board)
Electrical Characteristics (Differential Supply)
V+ = +15V, V– = –15V, VCM = 0V; RL = 2kΩ; TA = 25°C, bold values indicate –40°C ≤ TA ≤ +85°C, TA = TJ; unless noted
Symbol
Parameter
Condition
Min
VOS
Input Offset Voltage
TCVOS
Average Input Offset Drift
IB
Input Bias Current
50
250
nA
IOS
Input Offset Current
8
30
nA
VCM
Input Voltage Range
CMRR
Common Mode Rejection Ratio
PSRR
Note 1
Typ
Max
Units
2
7
mV
µV/°C
7
+13.5
–15.0
+13.8
–15.3
V
V
VCM = +13.5V, –15.0V
65
100
dB
Power Supply Rejection Ratio
VS = ±2.5V to ±15V
65
110
dB
AVOL
Large Signal Voltage Gain
VO = ±10V
25
180
V/mV
VOUT
Maximum Output Voltage Swing
±12.5
±14
V
BW
Bandwidth
2.5
MHz
SR
Slew Rate
6
V/µs
ISC
Output Short Circuit Current
50
mA
IS
Supply Current
Sourcing or sinking
30
1.3
2.0
mA
Typ
Max
Units
2
7
mV
Electrical Characteristics (Single Supply)
V+ = +5V, V– = 0V, VCM = 0.1V; TA = 25°C, bold values indicate –40°C ≤ TA ≤ +85°C, TA = TJ; unless noted
Symbol
Parameter
Condition
Min
VOS
Input Offset Voltage
TCVOS
Average Input Offset Drift
IB
Input Bias Current
65
250
nA
IOS
Input Offset Current
8
30
nA
VCM
Input Voltage Range
CMRR
Common Mode Rejection Ratio
PSRR
Note 1
µV/°C
7
+3.5
0
+3.7
–0.3
V
V
VCM = 0V to 3.5V
45
70
dB
Power Supply Rejection Ratio
VS = ±2.5V to ±15V
65
105
dB
AVOL
Large Signal Voltage Gain
VO = 1.5V to 3.5V, RL = 2k
15
170
V/mV
VOUT
Maximum Output Voltage Swing
RL = 10k to GND
RL = 10k to +5V
+3.8
+4.0
+1.0
ISC
Output Short Circuit Current
IS
Supply Current
Sourcing or sinking
20
+1.2
40
1.2
V
V
mA
1.8
mA
General Note: Devices are ESD protected; however, handling precautions are recommended.
Note 1:
Not production tested.
MIC6211
2
June 1999
MIC6211
Micrel
Typical Characteristics
INPUT BIAS CURRENT (nA)
1.3
1.2
V = 5V
S
1.1
70
VS = 5V
60
V = ±15V
50
S
40
30
-40 -20 0 20 40 60 80 100
TEMPERATURE (°C)
1.0
-40 -20 0 20 40 60 80 100
TEMPERATURE (°C)
0.5
10
VS = 5V
5
0
-40 -20 0 20 40 60 80 100
TEMPERATURE (°C)
30
80
60
40
20
0
10,000
1,000
100
10
-20
45
20
PHASE
90
135
10
72°
0
GAIN
180
225
-10
VS = ±15V
1
30
0.01
5
10 15 20 25
SUPPLY VOLTAGE (V)
VS = ±15V
VS = ±15V
VOLTAGE GAIN (dB)
VOLTAGE GAIN (dB)
1.0
0
15
Gain and Phase
vs. Frequency
120
100
0
20
Voltage Gain
vs. Frequency
Supply Current
vs. Supply Voltage
1.5
SUPPLY CURRENT (mA)
80
0.1
SUPPLY CURRENT (mA)
VS = ±15V
Input Offset Current
vs. Temperature
PHASE (°)
90
1.4
Input Bias Current
vs. Temperature
INPUT OFFSET CURRENT (nA)
Supply Current
vs. Temperature
-20
0.1
1.0
FREQUENCY (MHz)
270
10
FREQUENCY (kHz)
GND
AV = +1
RL = 2k
CL = 10pF
VS = ±15V
OUTPUT VOLTAGE
+10V
Small-Signal Transient Response
–10V
INPUT VOLTAGE
INPUT VOLTAGE
OUTPUT VOLTAGE
Large-Signal Transient Response
+10V
GND
2µs/DIV
–10V
+50mV
GND
AV = +1
RL = 2k
CL = 100pF
VS = ±15V
–50mV
+50mV
GND
–50mV
500ns/DIV
June 1999
3
MIC6211
Micrel
20
VS = ±15V
RL = 2k
TA = 25°C
15
10
VS = ±15V
100
5
0
10
90
80
70
50
0.01
65
V = ±15V
S
110
100
+PSRR
90
80
-PSRR
70
60
60
100
1000 3000
FREQUENCY (kHz)
Power Supply Rejection
Ratio vs. Frequency
120
0.1
1
10
100
FREQUENCY (kHz)
1000
50
0.001 0.01 0.1
1
10
FREQUENCY (kHz)
100
Short Circuit Current
vs. Temperature
VS = ±15V
60
55
50
45
40
-40 -20 0 20 40 60 80 100
TEMPERATURE (°C)
0.1Hz to 10Hz Noise
Wideband Noise
VS = ±15V
NOISE VOLTAGE (5µV/DIV)
NOISE VOLTAGE (4µV/DIV)
VS = ±15V
1s/DIV
MIC6211
130
110
PSRR (dB)
25
Common Mode Rejection Ratio
vs. Frequency
CMRR (dB)
30
Large-Signal
Frequency Response
SHORT CIRCUIT CURRENT (mA)
PEAK-TO-PEAK OUTPUT VOLTAGE (V)
MIC6211
5ms/DIV
4
June 1999
MIC6211
Micrel
Functional Diagram
V+
5
20Ω
–IN
1
VOUT
4
20Ω
CC
+IN
3
2
V–
(GND)
MIC6211
June 1999
5
MIC6211
MIC6211
Micrel
High-Pass Filter
Figure 4 is an active filter with 20dB (10×) 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.
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.
0.1µF
332k
1µF
1µF
4
VIN
1
7.5k
3
Figure 4a. High-Pass Filter
10
0
-10
-20
1
Figure 1. Voltage Buffer
1 10
1k
100k
FREQUENCY (Hz)
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.
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.
R1
R2
4
1
VOUT
3
VOUT
VIN
R1
R2
Figure 2. Inverting Amplifer
V1
V2
Voltage Controlled Current Sink
R
R
3
1
R
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
10,000
VOUT = VIN
30
20
100,000
VOUT (dB)
4
100
VOUT
1,000
1
10
VIN
VIN
VOUT
3
R
VOUT
4
R
V3
R
V4
All resistors are equal.
VOUT = V1 + V2 – V3 – V4
3
V1 + V2 > V3 + V4 for single supply operation
1
Figure 5. Summing Amplifier
4
I
VIN
R
R
Figure 3. Voltage Controlled Current Sink
MIC6211
6
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)
0.50 (0.020)
0.35 (0.014)
1.30 (0.051)
0.90 (0.035)
0.20 (0.008)
0.09 (0.004)
10°
0°
0.15 (0.006)
0.00 (0.000)
0.60 (0.024)
0.10 (0.004)
SOT-23-5 (M5)
June 1999
7
MIC6211
MIC6211
Micrel
MICREL INC. 1849 FORTUNE DRIVE SAN JOSE, CA 95131
TEL
+ 1 (408) 944-0800
FAX
+ 1 (408) 944-0970
WEB
USA
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.
© 1999 Micrel Incorporated
MIC6211
8
June 1999