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MIC916
Micrel, Inc.
MIC916
Triple 135MHz Low-Power Op Amp
General Description
The MIC916 is a high-speed, unity-gain stable operational amplifier. It provides a gain-bandwidth product of 135MHz with a very low, 2.4mA supply current per op amp. Supply voltage range is from ±2.5V to ±9V, allowing the MIC916 to be used in low-voltage circuits or applications requiring large dynamic range. The MIC916 is stable driving any capacitative load and achieves excellent PSRR, making it much easier to use than most conventional high-speed devices. Low supply voltage , low power consumption, and small packing make the MIC916 ideal for portable equipment. The ability to drive capacitative loads also makes it possible to drive long coaxial cables.
Features
· · · · · 135MHz gain bandwidth product 2.4mA supply current per op amp QSOP-16 package 270V/µs slew rate drives any capacitive load
Applications
· · · · Video Imaging Ultrasound Portable equipment
Ordering Information
Part Number Standard Pb-Free MIC916BQS MIC916YQS Junction Temp. Range 40°C to +85°C Package QSOP-16
Pin Configuration
INAV+(A) INA+ INBINB+ INCNC INC+
1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9
V(A)* OUTA V(B)* OUTB V+(B) V(C)* OUTC V+(C)
QSOP-16
* V pins must be externally shorted together
Micrel, Inc. · 2180 Fortune Drive · San Jose, CA 95131 · USA · tel + 1 (408) 944-0800 · fax + 1 (408) 474-1000 · http://www.micrel.com
April 2005
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M9999-042205
MIC916
Micrel, Inc.
Pin Description
Pin Number 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Pin Name INA V+(A) INA+ INB INB+ INC NC INC+ V+(C) OUTC V(C) V+(B) OUTB V(B) OUTA V(A) Pin Function Inverting Input A Positive Supply Input (Op Amp A) Noninverting Input A Inverting Input B Noninverting Input B Inverting Input C Not Connected Noninverting Input C Positive Supply Input (Op Amp C) Output C Negative Supply Input (Op Amp C) Positive Supply Input(Op Amp B) Output B Negative Supply Input (Op Amp B) Output A Negative Supply Input (Op Amp A)
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MIC916
Micrel, Inc.
Absolute Maximum Ratings (Note 1)
Supply Voltage (VV+ VV) ........................................... 20V Differentail Input Voltage (VIN+ VIN) .......... 8V, Note 4 Input Common-Mode Range (VIN+, VIN) .......... VV+ to VV Lead Temperature (soldering, 5 sec.) ....................... 260°C Storage Temperature (TS) ........................................ 150°C ESD Rating, Note 3 ................................................... 1.5kV
Operating Ratings (Note 2)
Supply Voltage (VS) ....................................... ±2.5V to ±9V Junction Temperature (TJ) ......................... 40°C to +85°C Package Thermal Resistance ............................... 260°C/W
Electrical Characteristics (±5V)
VV+ = +5V, VV = 5V, VCM = 0V, VOUT = 0V; RL = 10M; TJ = 25°C, bold values indicate 40°C TJ +85°C; unless noted. Symbol VOS VOS IB IOS VCM CMRR PSRR AVOL VOUT Parameter Input Offset Voltage Input Offset Voltage Temperature Coefficient Input Bias Current Input Offset Current Input Common-Mode Range Common-Mode Rejection Ratio Power Supply Rejection Ratio Large-Signal Voltage Gain CMRR > 60dB 2.5V < VCM < +2.5V ±5V < VS < ±9V RL = 2k, VOUT = ±2V RL = 200, VOUT = ±2V Maximum Output Voltage Swing positive, RL = 2k negative, RL = 2k positive, RL = 200 negative, RL = 200 GBW BW SR Gain-Bandwidth Product 3dB Bandwidth Slew Rate Crosstalk f = 1MHz, between op amp A and B or B and C f = 1 MHz, between op amp A and C IGND IGND Short-Circuit Output Current source sink Supply Current per Op Amp RL = 1k AV = 1, RL = 100 +3.0 +2.75 3.25 70 60 74 70 60 60 +3.3 +3.0 90 81 71 71 3.5 3.5 3.2 2.8 125 192 230 56 72 72 25 2.4 3.5 4.1 2.45 2.2 3.3 3.0 Condition Min Typ 1 4 3.5 0.05 5.5 9 3 +3.25 Max 15 Units mV µV/°C µA µA µA V dB dB dB dB dB dB V V V V V V V V MHz MHz V/µs dB dB mA mA mA mA
Electrical Characteristics
VV+ = +9V, VV = 9V, VCM = 0V, VOUT = 0V; RL = 10M; TJ = 25°C, bold values indicate 40°C TJ +85°C; unless noted Symbol VOS VOS Parameter Input Offset Voltage Input Offset Voltage Temperature Coefficient Condition Min Typ 1 4 Max 15 Units mV µV/°C
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MIC916
Symbol IB IOS VCM CMRR AVOL VOUT Parameter Input Bias Current Input Offset Current Input Common-Mode Range Common-Mode Rejection Ratio Large-Signal Voltage Gain Maximum Output Voltage Swing CMRR > 60dB 6.5V < VCM < 6.5V RL = 2k, VOUT = ±6V positive, RL = 2k negative, RL = 2k GBW SR Gain-Bandwidth Product Slew Rate Crosstalk f = 1MHz, between op amp A and B or B and C f = 1 MHz, between op amp A and C IGND IGND
Note 1. Note 2. Note 3. Note 4.
Micrel, Inc.
Condition Min Typ 3.5 0.05 7.25 70 60 60 +7.2 +6.8 98 73 +7.4 7.4 135 270 56 72 90 32 2.5 3.7 4.3 7.2 6.8 Max 5.5 9 3 +7.25 Units µA µA µA V dB dB dB V V V V MHz V/µs dB dB mA mA mA mA
RL = 1k
Short-Circuit Output Current
source sink
Supply Current per Op Amp
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.
Exceeding the maximum differential input voltage will damage the input stage and degrade performance (in particular, input bias current is likely to increase.
Test Circuits
VCC 10µF
R2 5k
VCC
10µF
BNC
50
BNC
0.1µF
Input
R1 5k R7c 2k R7b 200 R7a 100
0.1µF
BNC
Input 0.1µF 10k 10k 50
BNC
Output 0.1µF R6
2k
BNC
5k
Output
All resistors 1%
R3 200k R4 250
R5 5k VEE
10µF
10k
0.1µF 50
Input 0.1µF
R2 R2 + R 5 + R4 VOUT = VERROR 1 + + R1 R7
CMRR vs. Frequency
All resistors: 1% metal film VEE
10µF
PSRR vs. Frequency
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MIC916
100pF VCC
Micrel, Inc.
10pF R1 20
R2 4k
10µF
R3 27k S1 S2
0.1µF
BNC
To Dynamic Analyzer
R5 20
R4 27k
0.1µF
10pF VEE
10µF
Noise Measurement
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MIC916
Micrel, Inc.
Electrical Characteristics
Supply Current vs. Supply Voltage
SUPPLY CURRENT (mA)
Supply Current vs. Temperature
4.0
OFFSET VOLTAGE (mV)
Offset Voltage vs. Temperature
2.5 VSUPPLY = ±5V 2.0
3.5 SUPPLY CURRENT (mA)
+85°C 3.0 +25°C
3.5 VSUPPLY = ±9V 3.0 VSUPPLY = ±5V 2.5
2.5
-40°C
1.5
VSUPPLY = ±9V
2.0 2
3 4 5 6 7 8 9 SUPPLY VOLTAGE (±V)
10
2.0 -40 -20 0 20 40 60 80 100 TEMPERATURE (°C)
1.0 -40 -20 0 20 40 60 80 100 TEMPERATURE (°C)
Bias Current vs. Temperature
5
OFFSET VOLTGE (mV)
6 5 4
Offset Voltage vs. Common-Mode Voltage
VSUPPLY = ±9V
OFFSET VOLTGE (mV)
5 4 3 2 1
Offset Voltage vs. Common-Mode Voltage
VSUPPLY = ±5V
BIAS CURRENT (µA)
4 VSUPPLY = ±5V
+85°C 3 -40°C 2 1 +25°C 0 -8 -6 -4 -2 0 2 4 6 8 COMMON-MODE VOLTAGE (V)
+85°C
3
-40°C +25°C
2
VSUPPLY = ±9V
1 -40 -20 0 20 40 60 80 100 TEMPERATURE (°C)
0 -5 -4 -3 -2 -1 0 1 2 3 4 5 COMMON-MODE VOLTAGE (V)
Short-Circuit Current vs. Temperature
95 -20 VSUPPLY = ±9V
Short-Circuit Current vs. Temperature
100 OUTPUT CURRENT (mA)
SUPPLY CURRENT (mA)
Short-Circuit Current vs. Supply Voltage
SUPPLY CURRENT (mA)
90 85 80 75 70 65 60
-25
VSUPPLY = ±5V
80
-40°C +25°C
SOURCING CURRENT
-30 SINKING CURRENT -35 VSUPPLY = ±9V -40 -40 -20 0 20 40 60 80 100 TEMPERATURE (°C)
60 +85°C 40 SOURCING CURRENT 20 2 3 4 5 6 7 8 9 SUPPLY VOLTAGE (±V) 10
VSUPPLY = ±5V
55 -40 -20 0 20 40 60 80 100 TEMPERATURE (°C)
-15
Short-Circuit Current vs. Supply Voltage
OUTPUT VOLTAGE (V)
10 9 8 7 6 5 4 3 2 1 0 0
Output Voltage vs. Output Current
OUTPUT VOLTAGE (V) VSUPPLY = ±9V
0 -1 -2 -3 -4 -5 -6 -7 -8
Output Voltage vs. Output Current
SINKING CURRENT
OUTPUT CURRENT (mA)
-20 -25 -30 -35 SINKING CURRENT -40 2 +25°C 10 -40°C +85°C
-40°C +25°C
+85°C
+25°C -40°C SOURCING CURRENT +85°C
3 4 5 6 7 8 9 SUPPLY VOLTAGE (±V)
20 40 60 80 100 OUTPUT CURRENT (mA)
-9 VSUPPLY = ±9V -10 -40 -30 -20 -10 OUTPUT CURRENT (mA)
0
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MIC916
Micrel, Inc.
4.5 4.0 OUTPUT VOLTAGE (V) 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0 0
Output Voltage vs. Output Current
OUTPUT VOLTAGE (V)
Output Voltage vs. Output Current
0.0
GAIN BANDWIDTH (MHz)
Gain Bandwidth and Phase Margin vs. Load
150 46 44 42 VSUPPLY = ±5V 75 50 25 0 0 40 38 36 34 200 400 600 800 1000 CAPACITIVE LOAD (pF)
PHASE MARGIN (°)
VSUPPLY = ±5V
-0.5 -1.0 -1.5 -2.0 -2.5 -3.0 -3.5 -4.0 -4.5 -30 VSUPPLY = ±5V -40°C
SINKING CURRENT
125 100
+25°C
+25°C
+85°C SOURCING CURRENT
-40°C
+85°C 0
20 40 60 80 OUTPUT CURRENT (mA)
-25 -20 -15 -10 -5 OUTPUT CURRENT (mA)
Gain Bandwidth and Phase Margin vs. Load
150
GAIN BANDWIDTH (MHz)
Gain Bandwidth and Phase Margin vs. Supply Voltage
46 44
PHASE MARGIN (°) GAIN BANDWIDTH (MHz)
150 125 100 75 50 25 0 2 3 4 5 6 7 8 9 SUPPLY VOLTAGE (±V)
54 52
CMRR (dB)
120 100 80 60 40
Common-Mode Rejection Ratio
125 100 75 50 25 0 0 VSUPPLY = ±9V
42 40 38 36 34 200 400 600 800 1000 CAPACITIVE LOAD (pF)
50 48 46 44 42 10
PHASE MARGIN (°)
VSUPPLY = ±9V 20
1x102 1x103 1x104 1x105 1x106 1x106 1x107
0
FREQUENCY (Hz)
120 100
Common-Mode Rejection Ratio
100 80
+PSRR (dB)
Positive Power Supply Rejection Ratio
100 80
PSRR (dB)
Negative Power Supply Rejection Ratio
CMRR (dB)
80 60 40 VSUPPLY = ±5V 20
60 40 VSUPPLY = ±9V 20
60 40 VSUPPLY = ±9V 20 0
1x102
1x103
1x104
1x105
1x106
1x107
1x102
1x103
1x104
1x105
1x102
1x103
1x104
1x105
1x106
FREQUENCY (Hz)
1x107
0
FREQUENCY (Hz)
FREQUENCY (Hz)
100 80
Positive Power Supply Rejection Ratio
100 80
PSRR (dB)
Negative Power Supply Rejection Ratio
Distant Channel Cross Talk
0 -10 -20 -30 -40 -50 -60 -70 -80 -90 -100
60 40 VSUPPLY = ±5V 20 0
60 40 VSUPPLY = ±5V 20
1x102
1x103
1x104
1x105
1x106
1x107
1x105
1x106
1x107
1x102
1x103
1x104
1x105
1x106
FREQUENCY (Hz)
1x107
FREQUENCY (Hz)
FREQUENCY (Hz)
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M9999-042205
1x108
0
CROSS TALK (dB)
+PSRR (dB)
1x107
0
MIC916
Micrel, Inc.
Closed-Loop Frequency Response Test Circuit
VCC 10µF
Adjacent Channel Cross Talk
0 -10 -20 -30 -40 -50 -60 -70 -80 -90
GAIN (dB)
50 40 30 20 10 0 -10 -20 -30 -40 -50 1
Closed-Loop Frequency Response
1000pF 500pF 200pF 100pF 50pF
FET probe MIC916 RF 50 10µF VEE CL
VCC = ±2.5V 10 100 200 FREQUENCY (MHz)
1x105
1x106
1x107
FREQUENCY (Hz)
50 40 30
GAIN (dB)
Open-Loop Frequency Response
RL=100
225 180 135
PHASE (°)
GAIN (dB)
50 40 30 20 10 0 -10 -20 -30 -40 -50 1
Closed-Loop Frequency Response
1000pF 500pF 200pF 100pF 50pF
1x108
50 40 30
GAIN (dB)
Open-Loop Frequency Response
RL=100
0p
225 180 135
PHASE (°)
0.1µF
20 10 0 -10 -20 -30 -40 -50 1 VCC = ±5V No Load
90 45 0 -45 -90 -135 -180 -225 10 100 200 FREQUENCY (MHz)
CROSS TALK (dB)
20 10 0 -10 -20 -30 No Load
90 45 0 -45 -90 -135 VCC = ±9V -180 -225 10 100 200 FREQUENCY (MHz)
VCC = ±5V 10 100 200 FREQUENCY (MHz)
0p
-40 -50 1
120
Voltage Noise
250 200 150 100 50 0 0
Positive Slew Rate
VCC = ±5V
250 200 150 100 50 0 0
Negative Slew Rate
VCC = ±5V
nV Hz
100
SLEW RATE (V/µs)
80 60 40 20
NOISE VOLTAGE
1x101
1x102
1x103
1x104
1x105
0
200 400 600 800 1000 LOAD CAPACITANCE (pF)
SLEW RATE (V/µs)
200 400 600 800 1000 LOAD CAPACITANCE (pF)
FREQUENCY (Hz)
5
Current Noise
300 250 SLEW RATE (V/µs) 200 150 100 50
Positive Slew Rate
VCC = ±9V
300 250 SLEW RATE (V/µs) 200 150 100 50
Negative Slew Rate
VCC = ±9V
NOISE CURRENT pA Hz
4 3 2 1 0
1x101
1x102
1x103
1x104
1x105
0 0
200 400 600 800 1000 LOAD CAPACITANCE (pF)
0 0
200 400 600 800 1000 LOAD CAPACITANCE (pF)
FREQUENCY (Hz)
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MIC916
Micrel, Inc.
Small-Signal Pulse Response
Small-Signal Pulse Response
INPUT
VCC = ±9V AV = 1 CL = 1.7pF RL = 10M
INPUT
VCC = ±5V AV = 1 CL = 1.7pF RL = 10M
OUTPUT
Small-Signal Pulse Response
OUTPUT
Small-Signal Pulse Response
INPUT
VCC = ±9V AV = 1 CL = 100pF RL = 10M
INPUT
VCC = ±5V AV = 1 CL = 100pF RL = 10M
OUTPUT
Small-Signal Pulse Response
OUTPUT
Small-Signal Pulse Response
INPUT
VCC = ±9V AV = 1 CL = 1000pF RL = 10M
INPUT
VCC = ±5V AV = 1 CL = 1000pF RL = 10M
OUTPUT
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OUTPUT
M9999-042205
MIC916
Micrel, Inc.
Large-Signal Pulse Response
VCC = ±9V AV = 1 CL = 1.7pF
Large-Signal Pulse Response
VCC = ±5V AV = 1 CL = 1.7pF
OUTPUT
V = 5.64V t = 21ns
OUTPUT
V = 5.68V t = 24.5ns
Large-Signal Pulse Response
Large-Signal Pulse Response
VCC = ±5V AV = 1 CL = 100pF
OUTPUT
V = 5.84V t = 22.5ns
OUTPUT
VCC = ±9V AV = 1 CL = 100pF
V = 5.84V t = 26ns
Large-Signal Pulse Response
Large-Signal Pulse Response
VCC = ±5V AV = 1 CL = 1000pF
OUTPUT
V = 5.88V t = 70ns
OUTPUT
VCC = ±9V AV = 1 CL = 1000pF
V = 5.48V t = 95ns
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MIC916
Micrel, Inc. Power Supply Bypassing Regular supply bypassing techniques are recommended. A 10µF capacitor in parallel with a 0.1µF 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. All V pins must be externally shorted together. Thermal Considerations It is important to ensure the IC does not exceed the maximum operating junction (die) temperature of 85°C. The part can be operated up to the absolute maximum temperature rating of 125°C, but between 85°C and 125°C performance will degrade, in particular CMRR will reduce. A MIC916 with no load, dissipates power equal to the quiescent supply current * supply voltage PD(no load) = VV + - VV - IS When a load is added, the additional power is dissipated in the output stage of the op amp. The power dissipated in the device is a function of supply voltage, output voltage and output current. PD(output stage) = VV + - VOUT IOUT
Total Power Dissipation = PD(no load) + PD(output stage)
Applications Information
The MIC916 is a high-speed, voltage-feedback operational amplifier featuring very low supply current and excellent stability. This device is unity gain stable and capable of driving high capacitance loads. Driving High Capacitance The MIC916 is stable when driving any capacitance (see "Typical Characteristics: Gain Bandwidth and Phase Margin vs. Load Capacitance") making it ideal for driving long coaxial cables or other high-capacitance loads. Phase margin remains constant as load capacitance is increased. Most high-speed op amps are only able to drive limited capacitance. Note: increasing load capacitance does reduce the speed of the device (see "Typical Characteristics: Gain Bandwidth and Phase Margin vs. Load"). In applications where the load capacitance reduces the speed of the op amp to an unacceptable level, the effect of the load capacitance can be reduced by adding a small resistor (<100) in series with the output. Feedback Resistor Selection Conventional op amp gain configurations and resistor selection apply, the MIC916 is NOT a current feedback device. Resistor values in the range of 1k to 10k are recommended. Layout Considerations All high speed devices require careful PCB layout. The high stability and high PSRR of the MIC916 make this op amp easier to use than most, but the following guidelines should be observed: Capacitance, particularly on the two inputs pins will degrade performance; avoid large copper traces to the inputs. Keep the output signal away from the inputs and use a ground plane. It is important to ensure adequate supply bypassing capacitors are located close to the device.
(
)
(
)
Ensure the total power dissipated in the device is no greater than the thermal capacity of the package. The QSOP-16 package has a thermal resistance of 260°C/W. Max . Allowable Power Dissipation = TJ (max) - TA(max) TBD W
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Micrel, Inc.
Package Information
PIN 1
0.157 (3.99) 0.150 (3.81)
DIMENSIONS: INCHES (MM)
0.009 (0.2286) REF 0.025 (0.635) BSC 0.0098 (0.249) 0.0040 (0.102)
0.012 (0.30) 0.008 (0.20)
0.0098 (0.249) 0.0075 (0.190)
45°
8° 0°
SEATING 0.0688 (1.748) PLANE 0.0532 (1.351)
0.196 (4.98) 0.189 (4.80)
0.050 (1.27) 0.016 (0.40) 0.2284 (5.801) 0.2240 (5.690)
QSOP-16
MICREL INC. 2180 FORTUNE DRIVE SAN JOSE, CA 95131 USA
TEL
+ 1 (408) 944-0800
FAX
+ 1 (408) 474-1000
WEB
http://www.micrel.com
This 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 a Purchaser's own risk and Purchaser agrees to fully indemnify Micrel for any damages resulting from such use or sale. © 2000 Micrel Incorporated
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