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MIC862
Micrel
MIC862
Dual Ultra Low Power Op Amp in SOT23-8
General Description
The MIC862 is a dual low power operational amplifier in SOT23-8 package. It is designed to operate in the 2V to 5V range, rail-to-rail output, with input common-mode to ground. The MIC862 provides 3MHz gain-bandwidth product while consuming only a 31A/Channel supply current. With low supply voltage and SOT23-8 packaging, MIC862 provides two channels as general-purpose amplifiers for portable and battery-powered applications. Its package provides the maximum performance available while maintaining an extremely slim form factor. The minimal power consumption of this IC maximizes the battery life potential.
Features
* * * * * * * * * * * * * * SOT23-8 packaging 3MHz gain-bandwidth product 5MHz, -3dB bandwidth 31A supply current Rail-to-rail output Ground sensing at input (common mode to GND) Drive large capactive loads Unity gain stable Portable equipment Medical Insrument PDAs Pagers Cordless phones Consumer electronics
Applications
Ordering Information
Part Number MIC862BM8 MIC862YM8 Marking A34 A34 Ambient Temp. Range -40C to +85C -40C to +85C Package SOT23-8 SOT23-8 Pb-Free
Typical Application
V+
10F
0.1F 510
1/ MIC862 2 1/ MIC862 2
VOUT
RF 50 100pF
Peak Detector Circuit for AM Radio
Micrel, Inc. * 2180 Fortune Drive * San Jose, CA 95131 * USA * tel + 1 (408) 944-0800 * fax + 1 (408) 474-1000 * http://www.micrel.com
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MIC862
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Pin Configuration
OUTA 1 INA- 2 INA+ 3 V- 4
8 V+ 7 OUTB 6 INB- 5 INB+
SOT23-8 (M8)
Pin Description
Pin Number 1 2 3 4 5 6 7 8 Pin Name OUTA INA- INA+ V- INB+ INB- OUTB V+ Pin Function Output: Amplifier A Output Amplifier A Inverting (Input) Amplifier A Non-Inverting (Input) Negative Supply Amplifier B Non-Inverting (Input) Amplifier B Inverting (Input) Output: Amplifier B Output Positive Supply
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Absolute Maximum Ratings(1)
Supply Voltage (VV+ - V-) ......................................... +6.0V Differential Input Voltage (VIN+ - VIN-), Note 4 ...... +6.0V Input Voltage (VIN+ - VIN-) .................. V+ + 0.3V, V- -0.3V Lead Temperature (soldering, 5 sec.) ....................... 260C Output Short Circuit Current Duration .................. Indefinite Storage Temperature (TS) ........................................ 150C ESD Rating, Note 3
Operating Ratings(2)
Supply Voltage (V+ - V-) ............................. +2V to +5.25V Ambient Temperature Range ..................... -40C to +85C Package Thermal Resistance .......................... PCB boards JA (using 4 layer PCB) ................................. 100C/W JC (using 4 layer PCB) ................................... 70C/W
Electrical Characteristics
V+ = +2V, V- = 0V, VCM = V+/2; RL= 500k to V+/2; TA= 25C, unless otherwise noted. Bold values indicate -40C TA +85C. Symbol Parameter Condition Min Typ Max Units VOS Input Offset Voltage Differential Offset Voltage Input Offset Voltage Temp Coefficient IB IOS VCM CMRR PSRR AVOL Input Bias Current Input Offset Current Input Voltage Range (from V-) Common-Mode Rejection Ratio Power Supply Rejection Ratio Large-Signal Voltage Gain CMRR > 50dB 0 < VCM < 1V Supply voltage change of 2V to 2.7V RL = 5k, VOUT = 1.4VP-P RL = 100k, VOUT = 1.4VP-P RL = 500k, VOUT = 1.4VP-P VOUT VOUT GBW PM BW SR ISC IS Maximum Output Voltage Swing RL = 5k RL = 500k Minimum Output Voltage Swing RL = 5k RL = 500k Gain-Bandwidth Product Phase Margin -3dB Bandwidth Slew Rate Short-Circuit Output Current RL = 20k, CL = 2pF, Av = 11 RL = 20k, CL = 2pF, Av = 11 RL = 1M, CL = 2pF, Av = 1 RL = 1M, CL = 2pF, Av = 1, Positive Slew Rate = 1.5V/s Source Sink Supply Current (per op amp) Channel-to-Channel Crosstalk No Load Note 5 1.8 1.5 0.5 45 50 66 75 85 -6 -5 0.1 0.5 6 10 5 1 75 78 74 89 100 6 5 mV mV V/C pA pA V dB dB dB dB dB V V mV mV MHz MHz V/s mA mA 43 A dB
V+-80mV V+-55mV V+-3mV V+-1.4mV V-+14mV V-+ 20mV V-+0.85mV V-+ 3mV 2.1 57 4.2 2 2.6 2.2 27 -100
V+ = +2.7V, V- = 0V, VCM = V+/2; RL= 500k to V+/2; TA= 25C, unless otherwise noted. Bold values indicate -40C TA +85C. VOS Input Offset Voltage -6 0.1 6 mV -5 5 Differential Offset Voltage Input Offset Voltage Temp Coefficient IB IOS VCM CMRR Input Bias Current Input Offset Current Input Voltage Range Common-Mode Rejection Ratio CMRR > 60dB 0 < VCM < 1.35V 1 65 0.5 6 10 5 1.8 83 mV V/C pA pA V dB
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Symbol PSRR AVOL Parameter Power Supply Rejection Ratio Large-Signal Voltage Gain Condition Supply voltage change of 2.7V to 3V RL = 5k, VOUT = 2VP-P RL = 100k, VOUT = 2VP-P RL = 500k, VOUT = 2VP-P GBW PM BW SR ISC IS Gain-Bandwidth Product Phase Margin -3 dB Bandwidth Slew Rate Short-Circuit Output Current RL = 20k, CL = 2pF, Av = 11 RL = 20k, CL = 2pF, Av = 11 RL = 1M, CL = 2pF, Av = 1 RL = 1M, CL = 2pF, Av = 1 Positive Slew Rate 1.5V/s Source Sink Supply Current (per op amp) Channel-to-Channel Crosstalk No Load Note 5 4.5 4.5 Min 60 65 80 90 Typ 85 77 90 101 2.3 50 4.2 3 6.3 6.2 28 -120 45 Max
Micrel
Units dB dB dB dB MHz MHz V/s mA mA A dB
V+= +5V, V-= 0V, VCM= V+/2; RL= 500k to V+/2; TA= 25C, unless otherwise noted. Bold values indicate -40C TA +85C. VOS Input Offset Voltage Differential Offset Voltage Input Offset Voltage Temp Coefficient IB IOS VCM CMRR PSRR AVOL Input Bias Current Input Offset Current Input Voltage Range (from V-) Common-Mode Rejection Ratio Power Supply Rejection Ratio Large-Signal Voltage Gain CMRR > 60dB 0 < VCM < 3.5V, Supply voltage change from 3V to 5V RL = 5k, VOUT = 4.8VP-P RL = 100k, VOUT = 4.8VP-P RL = 500k, VOUT = 4.8VP-P VOUT VOUT GBW PM BW SR ISC IS Maximum Output Voltage Swing RL = 5k RL = 500k Minimum Output Voltage Swing RL = 5k RL = 500k Gain-Bandwidth Product Phase Margin -3 dB Bandwidth Slew Rate Short-Circuit Output Current RL = 1M, CL = 2pF, Av = 1 RL = 1M, CL = 2pF, Av = 1 Positive Slew Rate 1.8V/s Source Sink Supply Current (per op amp) Channel-to-Channel Crosstalk
Note 1. Note 2. Note 3. Note 4. Note 5.
-6 -5
0.1 0.5 6 10 5
6 5
mV mV V/C pA pA V dB dB dB dB dB V V mV mV MHz MHz V/s mA mA A dB
3.5 60 60 65 80 89
4.1 87 92 73 86 96
V+-50mV V+-37mV V+-3mV V+-1.3mV V-+24mV V-+ 40mV V-+0.7mV V-+ 3mV 3 45 5 4 17 18 23 27 31 -120 47
RL = 20k, CL = 2pF, Av = 11
No Load Note 5
Exceeding the absolute maximum rating may damage the device. The device is not guaranteed to function outside its operating rating. Devices are ESD sensitive. Handling precautions recommended. Human body model, 1.5k in series with 100pF. Pin 4 is ESD sensitive Exceeding the maximum differential input voltage will damage the input stage and degrade performance (in particular, input bias current is likely to increase. DC signal referenced to input. Refer to Typical Characteristics graphs for AC performance.
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Typical Characteristics
Short Circuit Current vs. Supply Voltage
44 40 Sinking 36 32 28 24 20 16 12 8 4 0
Short Circuit Current vs. Supply Voltage
33 30 Sourcing 27 24 21 18 15 12 9 6 3 0
0.9 1.06 SHORT-CIRCUIT CURRENT (mA) OUTPUT VOLTAGE (V)
Output Voltage vs. Output Current
1.485 Sourcing 1.35 V = 1.35V 1.215 1.08 0.945 25C 0.81 0.675 0.54 0.405 0.27 -40C 0.135 85C 0 0 1 2 3 4 5 6 7 8 9 10 OUTPUT CURRENT (mA)
SHORT-CIRCUIT CURRENT (mA)
-40C 25C
-40C 25C
85C
85C
1.06 1.22
1.38 1.54
1.7 1.86
2.02 2.18
2.34 2.5
0.9
1.22 1.38
1.54 1.7
1.86 2.02
2.18 2.34
SUPPLY VOLTAGE (V)
SUPPLY VOLTAGE (V)
Output Voltage vs. Output Current
2.75 2.50 2.25 2.00 1.75 1.50 1.25 1.00 0.75 0.50 0.25 0 0 OUTPUT VOLTAGE (V)
OUTPUT VOLTAGE (V)
Output Voltage vs. Output Current
0.135 25C -40C 0 Sinking V = 1.35V -0.135 85C -0.270 -0.405 -0.540 -0.675 -0.810 -0.945 -1.080 -1.215 -1.350 0 1 2 3 4 5 6 7 8 9 10 OUTPUT CURRENT (mA)
OUTPUT VOLTAGE (V)
2.5
Output Voltage vs. Output Current
0.25 25C 0 Sinking V = 2.5V -0.25 -0.50 85C -0.75 -40C -1.00 -1.25 -1.50 -1.75 -2.00 -2.25 -2.50 0 8 16 24 32 40 OUTPUT CURRENT (mA)
Sourcing V = 2.5V
25C -40C 85C -6 -12 -18 -24 -30 OUTPUT CURRENT (mA)
Supply Current vs. Supply Voltage
55 50 45 40 35 30 25 20 15 10 5 0
38 SUPPLY CURRENT/CH (A) 36 34 32 30 28 26 24 22
Supply Current/Ch vs. Temperature
V = 2.5V OFFSET VOLTAGE (mV) 1.2 1 0.8 0.6 0.4 0.2 0 -0.2
Offset Voltage vs. Common-Mode Voltage
V = 2.5V
SUPPLY CURRENT/CH (A)
85C
25C -40C
85C
V = 1.35V
25C
20 -40 -20 0 20 40 60 80 100 TEMPERATURE (C)
-40C -0.4 -2.5 -2 -1.5 -1 -0.5 0 0.5 1 1.5 2 COMMON-MODE VOLTAGE (V)
0.90
1.06 1.22
1.38 1.54
1.70 1.86
2.02 2.18
SUPPLY VOLTAGE (V)
2.34 2.50
Offset Voltage vs. Common-Mode Voltage
V = 1.35V SHORT-CIRCUIT CURRENT (mA) 2.5 30 25 20 15 10 5
Short Circuit Current vs. Temperature
Sourcing V = 2.5V SHORT-CIRCUIT CURRENT (mA)
Short Circuit Current vs. Temperature
35 30 25 20 15 10 5 V = 1.35V 0 -40 -20 0 20 40 60 80 100 TEMPERATURE (C) Sinking V = 2.5V
OFFSET VOLTAGE (mV)
25C
2 1.5 1 85C 0.5 -40C 0 -1.5 -1 -0.5 0 0.5 1 COMMON-MODE VOLTAGE (V)
V = 1.35V 0 -40 -20 0 20 40 60 80 100 TEMPERATURE (C)
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Offset Voltage vs. Temperature
0.7 OFFSET VOLTAGE (mV) 0.6 0.5
GAIN (dB)
Gain Frequency Response
25 20 15 10 5 0 Av = 2 -5 V = 1.35V -10 C = 2pF L -15 RL = 5k -20 RF = 20k -25 10k 100k 1M 10M FREQUENCY (Hz) 225 180 135 90
PHASE ()
Gain Frequency Response
25 20 15 10
GAIN (dB)
V = 1.35V
225 180 135 90 45 0 -45 -90 -135 -180 10M -225
PHASE () PHASE () PHASE ()
0.4 0.3 0.2 0.1 0 -0.1 -40 -20 0 20 40 60 80 100 TEMPERATURE (C) V = 2.5V
45 0 -45 -90 -135 -180 -225
5 0 -5 Av = 2 -10 V = 2.5V CL = 2pF -15 RL = 5k -20 RF = 20k -25 100k 1M 10k FREQUENCY (Hz)
Gain Bandwidth and Phase Margin
50 40 30 20
GAIN (dB)
Gain Bandwidth and Phase Margin
225 180 135 90
PHASE ()
GAIN (dB)
Gain Bandwidth and Phase Margin
225 180 135 90
PHASE ()
50 40 30 20 10 0 -10 -20 Av = 11 V = 1.35V -30 C = 2pF L -40 R = 1M L -50 100k 1M FREQUENCY (Hz)
50 40 30 20
GAIN (dB)
225 180 135 90 45 0 -45 -90 -135 -180 -225
10 0 -10 Av = 11 -20 V+ = +1.5V V- = -0.5V -30 C = 1.7pF L -40 R = 1M L -50 10k 100k 1M FREQUENCY (Hz)
45 0 -45 -90 -135 -180 10M -225
45 0 -45 -90 -135 -180 10M -225
10 0 -10 -20 Av = 11 V = 2.5V -30 C = 2pF L -40 R = 1M L -50 10k 100k 1M 10M FREQUENCY (Hz)
Unity Bandwidth Frequency Response
20 15 10 180 135 90 20 15 10
Unity Gain Frequency Response
180 135 90 20 15 10
Unity Gain Frequency Response
180 135 90 Gain 45 0 -45 -90 -135 -180 -225 -270
PHASE ()
PHASE ()
GAIN (dB)
GAIN (dB)
Gain
Gain
-5 -10 Av = 1 -15 V+ = 1.5V V- = -0.5V -20 C = 1.7pF
L
Phase
-45 -90 -135 -180 -225 -270
-5 -10
-25 R = 5k L -30 10k 100k 1M FREQUENCY (Hz)
10M
Phase -15 Av = 1 V = 1.35V -20 C = 2pF L -25 R = 5k L -30 10k 1M 1k 100k FREQUENCY (Hz)
-45 -90 -135 -180 -225 -270 10M
GAIN (dB)
5 0
45 0
5 0
45 0
5 0 -5 -10
Phase -15 Av = 1 V = 2.5V -20 C = 2pF L -25 R = 5k L -30 1k 10k 100k 1M FREQUENCY (Hz)
10M
PSRR vs. Frequency
100 90 80 V = 1.35V 100 90 80 PSRR (dB) 70 60 50 40 30 20 10 0 1
PSRR vs. Frequency
V = 2.5V CROSSTALK (dB) -30 -35 -40 -45 -50 -55 10 100 1k 10k 100k 1M 10M FREQUENCY (Hz) -60 10
Channel to Channel Crosstalk
PSRR (dB)
70 60 50 40 30 20 10 0 1
10 100 1k 10k 100k 1M 10M FREQUENCY (Hz)
100 FREQUENCY (kHz)
1000
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Functional Characteristics
Small Signal Response
AV = 1 V = 1.35V CL = 1.7pF RL = 1M
Small Signal Response
AV = 1 V = 2.5V CL = 1.7pF RL = 1M
INPUT 50mV/div
OUTPUT 50mV/div
TIME 500ns/div
OUTPUT 50mV/div
INPUT 50mV/div
TIME 500ns/div
Small Signal Response
AV = 1 V = 1.35V CL = 50pF RL = 500
Small Signal Response
AV = 1 V = 2.5V CL = 50pF RL = 500
INPUT 50mV/div
OUTPUT 50mV/div
TIME 1s/div
OUTPUT 50mV/div
INPUT 50mV/div
TIME 1s/div
Small Signal Response
AV = 1 V = 1.35V CL = 1000pF RL = 500
Small Signal Response
AV = 1 V = 2.5V CL = 1000pF RL = 500
INPUT 50mV/div
OUTPUT 50mV/div
TIME 500ns/div
OUTPUT 50mV/div
INPUT 50mV/div
TIME 500ns/div
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Small Signal Pulse Response
AV = 1 V+ = +1.5V V- = -0.5V CL = 1.7pF RL = 1M
OUTPUT 50mV/div
INPUT 50mV/div
TIME 500ns/div
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Large Signal Response
Large Signal Response
AV = 1 V = 1.35V CL = 1.7pF RL = 1M
AV = 1 V = 2.5V CL = 1.7pF RL = 1M
OUTPUT 500mV/div
Positive Slew Rate = 1.5V/s Negative Slew Rate = 2.0V/s
OUTPUT 1V/div
Positive Slew Rate = 1.8V/s Negative Slew Rate = 4.1V/s
TIME 5s/div
TIME 5s/div
Large Signal Response
AV = 1 V = 1.35V CL = 50pF RL = 500
Large Signal Response
AV = 1 V = 2.5V CL = 50pF RL = 500
OUTPUT 500mV/div
Positive Slew Rate = 1.5V/s Negative Slew Rate = 2.8V/s
OUTPUT 1V/div
Positive Slew Rate = 1.8V/s Negative Slew Rate = 4.7V/s
TIME 5s/div
TIME 5s/div
Large Signal Pulse Response
AV = 1 V = 1.35V CL = 1000pF RL = 500
Large Signal Pulse Response
AV = 1 V = 2.5V CL = 1000pF RL = 500
OUTPUT 500mV/div
Positive Slew Rate = 1.3V/s Negative Slew Rate = 3.6V/s
OUTPUT 1V/div
Positive Slew Rate = 1.3V/s Negative Slew Rate = 3.6V/s
TIME 5s/div
TIME 5s/div
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Large Signal Pulse Response
AV = 1 V+ = +1.5V V- = -0.5V CL = 1.7pF RL = 1M
V+
RL V-- CL
OUTPUT 20mV/div
Positive Slew Rate = 1.17V/s Negative Slew Rate = 2.0V/s
TIME 5s/div
Rail to Rail Operation
Rail to Rail Operation
INPUT 500mV/div
AV = 2 V = 1.35V CL = 2pF RL = 1M RF = 20k
INPUT 500mV/div
V = 2.7VP-P
AV = 2 V = 2.5V CL = 2pF RL = 1M RF = 20k
V = 5VP-P
OUTPUT 1V/div
TIME 250s/div
OUTPUT 1V/div
TIME 250s/div
Rail to Rail Operation
Rail to Rail Operation
INPUT 500mV/div
AV = 2 V = 1.35V CL = 2 pF RL = 5k RF = 20k
INPUT 1V/div
V = 2.7VP-P
AV = 2 V = 2.5V CL = 2 pF RL = 5k RF = 20k
V = 5VP-P
OUTPUT 1V/div
TIME 250s/div
OUTPUT 2V/div
TIME 250s/div
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Under the above conditions, if the load is less than 20kOhm and the output swing is greater than 1V(peak), there may be some instability when the output is sinking current. Capacitive Load When driving a large capacitive load, a resistor of 500 is recommended to be connected between the op-amp output and the capacitive load to avoid oscillation.
Applications Information
Power Supply Bypassing Regular supply bypassing techniques are recommended. A 10F capacitor in parallel with a 0.1F capacitor on both the positive and negative supplies are ideal. For best performance all bypassing capacitors should be located as close to the op amp as possible and all capacitors should be low ESL (equivalent series inductance), ESR (equivalent series resistance). Surface-mount ceramic capacitors are ideal. Supply and Loading Resistive Considerations The MIC862 is intended for single supply applications configured with a grounded load. It is not advisable to operate the MIC862 under either of the following conditions: 1. A grounded load and split supplies (+/-V) 2. A single supply where the load is terminated above ground.
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Package Information
0.20 0.38 0.22 0.38 0.22
0.65REF
3.00 2.60
1.75 1.50
1.95REF 3.00 2.80
10 0
0.20 0.09
1.45 0.90
1.30 0.90
0.15 0.00
SOT-23-8 (M8)
MICREL, INC. 2180 FORTUNE DRIVE SAN JOSE, CA 95131
TEL
USA
+ 1 (408) 944-0800
FAX
+ 1 (408) 474-1000
WEB
http://www.micrel.com
The information furnished by Micrel in this data sheet is believed to be accurate and reliable. However, no responsibility is assumed by Micrel for its use. Micrel reserves the right to change circuitry and specifications at any time without notification to the customer. Micrel Products are not designed or authorized for use as components in life support appliances, devices or systems where malfunction of a product can reasonably be expected to result in personal injury. Life support devices or systems are devices or systems that (a) are intended for surgical implant into the body or (b) support or sustain life, and whose failure to perform can be reasonably expected to result in a significant injury to the user. A Purchaser's use or sale of Micrel Products for use in life support appliances, devices or systems is at Purchaser's own risk and Purchaser agrees to fully indemnify Micrel for any damages resulting from such use or sale. (c) 2004 Micrel, Incorporated.
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