National Semiconductor LMV771 Instructions d'utilisation et d'entretien
April 2007
LMV771/LMV772/LMV774
Single/Dual/Quad, Low Offset, Low Noise, RRO
Operational Amplifiers
General Description
The LMV771/LMV772/LMV774 are Single, Dual, and Quad
low noise precision operational amplifiers intended for use in
a wide range of applications. Other important characteristics
of the family include: an extended operating temperature
range of −40°C to 125°C, the tiny SC70-5 package for the
LMV771, and low input bias current.
The extended temperature range of −40°C to 125°C allows
the LMV771/LMV772/LMV774 to accommodate a broad
range of applications. The LMV771 expands National
Semiconductor’s Silicon Dust™amplifier portfolio offering en-
hancements in size, speed, and power savings. The LMV771/
LMV772/LMV774 are guaranteed to operate over the voltage
range of 2.7V to 5.0V and all have rail-to-rail output.
The LMV771/LMV772/LMV774 family is designed for preci-
sion, low noise, low voltage, and miniature systems. These
amplifiers provide rail-to-rail output swing into heavy loads.
The maximum input offset voltage for the LMV771 is 850 μV
at room temperature and the input common mode voltage
range includes ground.
The LMV771 is offered in the tiny SC70-5 package, LMV772
in the space saving MSOP-8 and SOIC-8, and the LMV774
in TSSOP-14.
Features
(Unless otherwise noted, typical values at VS= 2.7V)
■Guaranteed 2.7V and 5V specifications
■Maximum VOS (LMV771) 850μV (limit)
■Voltage noise
—f = 100Hz 12.5nV/
—f = 10kHz 7.5nV/
■Rail-to-Rail output swing
—RL = 600Ω 100 mV from rail
—RL= 2kΩ50 mV from rail
■Open loop gain with RL= 2kΩ100 dB
■VCM 0 to V+-0.9V
■Supply current (per amplifier) 550 µA
■Gain bandwidth product 3.5 MHz
■Temperature range −40°C to 125°C
Applications
■Transducer amplifier
■Instrumentation amplifier
■Precision current sensing
■Data acquisition systems
■Active filters and buffers
■Sample and hold
■Portable/battery powered electronics
Connection Diagram
SC70-5
20039667
Top View
Instrumentation Amplifier
20039636
Silicon Dust™is a trademark of National Semiconductor Corporation.
© 2007 National Semiconductor Corporation 200396 www.national.com
LMV771/LMV772/LMV774 Single/Dual/Quad, Low Offset, Low Noise, RRO Operational Amplifiers
Absolute Maximum Ratings (Note 1)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
ESD Tolerance (Note 2)
Machine Model 200V
Human Body Model 2000V
Differential Input Voltage ± Supply Voltage
Voltage at Input Pins (V+) + 0.3V, (V–) – 0.3V
Current at Input Pins ±10 mA
Supply Voltage (V+–V −)5.75V
Output Short Circuit to V+(Note 3)
Output Short Circuit to V−(Note 4)
Mounting Temperture
Infrared or Convection (20 sec) 235°C
Wave Soldering Lead Temp
(10 sec) 260°C
Storage Temperature Range −65°C to 150°C
Junction Temperature (Note 5) 150°C
Operating Ratings (Note 1)
Supply Voltage 2.7V to 5.5V
Temperature Range −40°C to 125°C
Thermal Resistance (θJA)
SC70-5 Package 440 °C/W
8-Pin MSOP 235°C/W
8-Pin SOIC 190°C/W
14-Pin TSSOP 155°C/W
2.7V DC Electrical Characteristics (Note 13)
Unless otherwise specified, all limits are guaranteed for TA= 25°C. V+= 2.7V, V − = 0V, VCM = V+/2, VO= V+/2 and
RL> 1MΩ. Boldface limits apply at the temperature extremes.
Symbol Parameter Condition Min
(Note 7)
Typ
(Note 6)
Max
(Note 7)
Units
VOS Input Offset Voltage LMV771 0.3 0.85
1.0 mV
LMV772/LMV774 0.3 1.0
1.2
TCVOS Input Offset Voltage Average Drift −0.45 µV/°C
IBInput Bias Current (Note 8) −0.1 100 pA
IOS Input Offset Current (Note 8) 0.004 100 pA
ISSupply Current (Per Amplifier) 550 900
910 µA
CMRR Common Mode Rejection Ratio 0.5 ≤VCM ≤1.2V 74
72
80 dB
PSSR Power Supply Rejection Ratio 2.7V ≤V+≤5V 82
76
90 dB
VCM Input Common-Mode Voltage
Range
For CMRR ≥50dB 0 1.8 V
AVLarge Signal Voltage Gain
(Note 9)
RL = 600Ω to 1.35V,
VO= 0.2V to 2.5V, (Note 10)
92
80
100
dB
RL= 2kΩto 1.35V,
VO= 0.2V to 2.5V, (Note 11)
98
86
100
VOOutput Swing RL = 600Ω to 1.35V
VIN = ± 100mV, (Note 10)
0.11
0.14
0.084 to
2.62
2.59
2.56
V
RL= 2kΩto 1.35V
VIN = ± 100mV, (Note 11)
0.05
0.06
0.026 to
2.68
2.65
2.64
IOOutput Short Circuit Current Sourcing, VO= 0V
VIN = 100mV
18
11
24
mA
Sinking, VO= 2.7V
VIN = −100mV
18
11
22
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LMV771/LMV772/LMV774
2.7V AC Electrical Characteristics (Note 13)
Unless otherwise specified, all limits are guaranteed for TA= 25°C. V+= 5.0V, V − = 0V, VCM = V+/2, VO= V+/2 and RL> 1MΩ.
Boldface limits apply at the temperature extremes.
Symbol Parameter Conditions Min
(Note 7)
Typ
(Note 6)
Max
(Note 7)
Units
SR Slew Rate (Note 12) AV= +1, RL= 10 kΩ1.4 V/µs
GBW Gain-Bandwidth Product 3.5 MHz
ΦmPhase Margin 79 Deg
GmGain Margin −15 dB
enInput-Referred Voltage Noise
(Flatband)
f = 10kHz 7.5 nV/
enInput-Referred Voltage Noise (l/f) f = 100Hz 12.5 nV/
inInput-Referred Current Noise f = 1kHz 0.001 pA/
THD Total Harmonic Distortion f = 1kHz, AV= +1
RL = 600Ω, VIN = 1 VPP
0.007 %
5.0V DC Electrical Characteristics (Note 13)
Unless otherwise specified, all limits are guaranteed for TA= 25°C. V+= 5.0V, V − = 0V, VCM = V+/2, VO= V+/2 and
RL> 1MΩ. Boldface limits apply at the temperature extremes.
Symbol Parameter Condition Min
(Note 7)
Typ
(Note 6)
Max
(Note 7)
Units
VOS Input Offset Voltage LMV771 0.25 0.85
1.0 mV
LMV772/LMV774 0.25 1.0
1.2
TCVOS Input Offset Voltage Average Drift −0.35 µV/°C
IBInput Bias Current (Note 8) −0.23 100 pA
IOS Input Offset Current (Note 8) 0.017 100 pA
ISSupply Current (Per Amplifier) 600 950
960 µA
CMRR Common Mode Rejection Ratio 0.5 ≤VCM ≤3.5V 80
79
90 dB
PSRR Power Supply Rejection Ratio 2.7V ≤V+≤5V 82
76
90 dB
VCM Input Common-Mode Voltage
Range
For CMRR ≥50dB 0 4.1 V
AVLarge Signal Voltage Gain
(Note 9)
RL = 600Ω to 2.5V,
VO= 0.2V to 4.8V, (Note 10)
92
89
100
dB
RL= 2kΩto 2.5V,
VO= 0.2V to 4.8V, (Note 11)
98
95
100
VOOutput Swing RL = 600Ω to 2.5V
VIN = ± 100mV, (Note 10)
0.15
0.23
0.112 to
4.9
4.85
4.77
V
RL= 2kΩto 2.5V
VIN = ± 100mV, (Note 11)
0.06
0.07
0.035 to
4.97
4.94
4.93
IOOutput Short Circuit Current (Note
8),(Note 14)
Sourcing, VO= 0V
VIN = 100mV
35
35
75
mA
Sinking, VO= 2.7V
VIN = −100mV
35
35
66
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LMV771/LMV772/LMV774
5.0V AC Electrical Characteristics (Note 13)
Unless otherwise specified, all limits are guaranteed for TA= 25°C. V+= 5.0V, V − = 0V, VCM = V+/2, VO= V+/2 and RL> 1MΩ.
Boldface limits apply at the temperature extremes.
Symbol Parameter Conditions Min
(Note 7)
Typ
(Note 6)
Max
(Note 7)
Units
SR Slew Rate (Note 12) AV= +1, RL= 10 kΩ1.4 V/µs
GBW Gain-Bandwidth Product 3.5 MHz
ΦmPhase Margin 79 Deg
GmGain Margin −15 dB
enInput-Referred Voltage Noise
(Flatband)
f = 10kHz 6.5 nV/
enInput-Referred Voltage Noise (l/f) f = 100Hz 12 nV/
inInput-Referred Current Noise f = 1kHz 0.001 pA/
THD Total Harmonic Distortion f = 1kHz, AV= +1
RL = 600Ω, VIN = 1 VPP
0.007 %
Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is
intended to be functional, but specific performance is not guaranteed. For guaranteed specifications and the test conditions, see the Electrical Characteristics.
Note 2: Human Body Model is 1.5 kΩin series with 100 pF. Machine Model is 0Ωin series with 20 pF.
Note 3: Shorting output to V+will adversely affect reliability.
Note 4: Shorting output to V−will adversely affect reliability.
Note 5: The maximum power dissipation is a function of TJ(MAX) , θJA, and TA. The maximum allowable power dissipation at any ambient temperature is
PD= (TJ(MAX)–T A)/θJA. All numbers apply for packages soldered directly into a PC board.
Note 6: Typical values represent the most likely parametric norm.
Note 7: All limits are guaranteed by testing or statistical analysis.
Note 8: Limits guaranteed by design.
Note 9: RLis connected to mid-supply. The output voltage is set at 200mV from the rails. VO= GND + 0.2V and VO= V+−0.2V
Note 10: For LMV772/LMV774, temperature limits apply to −40°C to 85°C.
Note 11: For LMV772/LMV774, temperature limits apply to −40°C to 85°C. If RLis relaxed to 10 kΩ, then for LMV772/LMV774 temperature limits apply to −40°
C to 125°C.
Note 12: The number specified is the slower of positive and negative slew rates.
Note 13: Electrical Table values apply only for factory testing conditions at the temperature indicated. Factory testing conditions result in very limited self-heating
of the device such that TJ= TA.
Note 14: Continuous operation of the device with an output short circuit current larger than 35mA may cause permanent damage to the device.
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LMV771/LMV772/LMV774
Connection Diagrams
SC70-5
20039667
Top View
8-Pin MSOP/SOIC
20039671
Top View
14-Pin TSSOP
20039672
Top View
Ordering Information
Package Part Number Package Marking Transport Media NSC Drawing
SC70-5 LMV771MG A75 1k Units Tape and Reel MAA05A
LMV771MGX 3k Units Tape and Reel
8-Pin SOIC LMV772MA LMV772MA 95 Units/Rail M08A
LMV772MAX 2.5k Units Tape and Reel
8-Pin MSOP LMV772MM A91A 1k Units Tape and Reel MUA08A
LMV772MMX 3.5k Units Tape and Reel
14-Pin TSSOP LMV774MT LMV774MT 95 Units/Rail MTC14
LMV774MTX 2.5k Units Tape and Reel
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LMV771/LMV772/LMV774
Typical Performance Characteristics
VOS vs. VCM Over Temperature
20039627
VOS vs. VCM Over Temperature
20039626
Output Swing vs. VS
20039625
Output Swing vs. VS
20039624
Output Swing vs. VS
20039623
ISvs. VSOver Temperature
20039630
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LMV771/LMV772/LMV774
Input Voltage Noise vs. Frequency
20039608
Input Bias Current Over Temperature
20039635
Input Bias Current Over Temperature
20039634
Input Bias Current Over Temperature
20039633
THD+N vs. Frequency
20039607
THD+N vs. VOUT
20039666
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LMV771/LMV772/LMV774
Slew Rate vs. Supply Voltage
20039601
Open Loop Frequency Response Over Temperature
20039602
Open Loop Frequency Response
20039603
Open Loop Frequency Response
20039604
Open Loop Gain & Phase with Cap. Loading
20039605
Open Loop Gain & Phase with Cap. Loading
20039606
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LMV771/LMV772/LMV774
Non-Inverting Small Signal Pulse Response
20039617
Non-Inverting Large Signal Pulse Response
20039611
Non-Inverting Small Signal Pulse Response
20039616
Non-Inverting Large Signal Pulse Response
20039610
Non-Inverting Small Signal Pulse Response
20039615
Non-Inverting Large Signal Pulse Response
20039609
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LMV771/LMV772/LMV774
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