LMV797 Datasheet PDF - National Semiconductor

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LMV797
National Semiconductor

Part Number LMV797
Description (LMV796 / LMV797) 1.8V Operational Amplifiers
Page 19 Pages


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May 2006
LMV796/LMV797
17 MHz, Low Noise, CMOS Input, 1.8V Operational
Amplifiers
General Description
The LMV796 (Single) and the LMV797 (Dual) low noise,
CMOS input operational amplifiers offer a low input voltage
noise density of 5.8 nV/
while consuming only 1.15 mA
(LMV796) of quiescent current. The LMV796 and LMV797
are unity gain stable op amps and have gain bandwidth of 17
www.DataSheet4U.cMoHmz. The LMV796/ LMV797 have a supply voltage range of
1.8V to 5.5V and can operate from a single supply. The
LMV796/LMV797 each feature a rail-to-rail output stage ca-
pable of driving a 600load and sourcing as much as 60 mA
of current.
The LMV796 family provides optimal performance in low
voltage and low noise systems. A CMOS input stage, with
typical input bias currents in the range of a few femtoAm-
peres, and an input common mode voltage range, which
includes ground, make the LMV796 and the LMV797 ideal
for low power sensor applications.
The LMV796/LMV797 are manufactured using National’s
advanced VIP50 process and are offered in a 5-pin SOT23
and an 8-pin MSOP package respectively.
Features
(Typical 5V supply, unless otherwise noted)
n Input referred voltage noise
5.8 nV/
n Input bias current
100 fA
n Unity gain bandwidth
17 MHz
n Supply current per channel
— LMV796
1.15 mA
— LMV797
1.30 mA
n Rail-to-rail output swing
@ 10 kload
25 mV from rail
@ 2 kload
35 mV from rail
n Guaranteed 2.5V and 5.0V performance
n Total harmonic distortion
0.01% @1 kHz, 600
n Temperature range
−40˚C to 125˚C
Applications
n Photodiode amplifiers
n Active filters and buffers
n Low noise signal processing
n Medical instrumentation
n Sensor interface applications
Typical Application
20183569
Photodiode Transimpedance Amplifier
20183539
Input Referred Voltage Noise vs. Frequency
© 2006 National Semiconductor Corporation DS201835
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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)
Human Body Model
Machine Model
VIN Differential
Supply Voltage (V+ – V)
Input/Output Pin Voltage
Storage Temperature Range
Junction Temperature (Note 3)
2000V
200V
±0.3V
6.0V
V+ +0.3V, V−0.3V
−65˚C to 150˚C
+150˚C
Soldering Information
Infrared or Convection (20 sec)
Wave Soldering Lead Temp (10
sec)
235˚C
260˚C
Operating Ratings (Note 1)
Temperature Range (Note 3)
−40˚C to 125˚C
Supply Voltage (V+ – V)
−40˚C TA 125˚C
0˚C TA 125˚C
Package Thermal Resistance (θJA (Note 3))
5-Pin SOT23
2.0V to 5.5V
1.8V to 5.5V
180˚C/W
8-Pin MSOP
236˚C/W
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2.5V Electrical Characteristics
Unless otherwise specified, all limits are guaranteed for TA = 25˚C, V+ = 2.5V, V= 0V, VCM = V+/2 = VO. Boldface limits ap-
ply at the temperature extremes.
Symbol
Parameter
Conditions
VOS Input Offset Voltage
TC VOS
IB
IOS
CMRR
PSRR
CMVR
AVOL
Input Offset Average Drift
Input Bias Current
Input Offset Current
Common Mode Rejection
Ratio
Power Supply Rejection
Ratio
Input Common-Mode Voltage
Range
Large Signal Voltage Gain
LMV796 (Note 6)
LMV797 (Note 6)
VCM = 1.0V
(Notes 7, 8)
(Note 8)
0V VCM 1.4V
−40˚C TA 85˚C
−40˚C TA
125˚C
2.0V V+ 5.5V, VCM = 0V
1.8V V+ 5.5V, VCM = 0V
CMRR 60 dB
CMRR 55 dB
VOUT = 0.15V to 2.2V,
RLOAD = 2 kto V+/2
LMV796
LMV797
VOUT Output Swing High
Output Swing Low
VOUT = 0.15V to 2.2V,
RLOAD = 10 kto V+/2
RLOAD = 2 kto V+/2
RLOAD = 10 kto V+/2
RLOAD = 2 kto V+/2
RLOAD = 10 kto V+/2
Min
(Note 5)
80
75
80
75
80
−0.3
-0.3
85
80
82
78
88
84
Typ
(Note 4)
0.1
−1.0
−1.8
0.05
0.05
10
94
100
98
98
92
110
25
20
30
15
Max
(Note 5)
±1.35
±1.65
1
25
1
100
1.5
1.5
75
82
65
71
75
78
65
67
Units
mV
µV/˚C
pA
fA
dB
dB
V
dB
mV from
rail
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2.5V Electrical Characteristics (Continued)
IOUT
IS
Output Short Circuit Current
Supply Current per Amplifier
Sourcing to V
VIN = 200 mV (Note 9)
Sinking to V+
VIN = –200 mV (Note 9)
LMV796
SR Slew Rate
GBWP Gain Bandwidth Product
en Input-Referred Voltage Noise
www.DataShineet4U.comInput-Referred Current Noise
THD+N Total Harmonic Distortion +
Noise
LMV797
per channel
AV = +1, Rising (10% to 90%)
AV = +1, Falling (90% to 10%)
f = 1 kHz
f = 1 kHz
f = 1 kHz, AV = 1, RLOAD = 600
35 47
28
7 15
5
mA
0.95
1.1
1.30
1.65
1.50
1.85
mA
8.5
10.5
V/µs
14 MHz
6.2 nV/
0.01
pA/
0.01
%
5V Electrical Characteristics
Unless otherwise specified, all limits are guaranteed for TA = 25˚C, V+ = 5V, V= 0V, VCM = V+/2 = VO. Boldface limits apply
at the temperature extremes.
Symbol
Parameter
VOS Input Offset Voltage
Conditions
Min
(Note 5)
Typ
(Note 4)
0.1
Max
(Note 5)
±1.35
±1.65
Units
mV
TC VOS Input Offset Average Drift
LMV796 (Note 6)
LMV797 (Note 6)
−1.0
−1.8
µV/˚C
IB Input Bias Current
VCM = 2.0V
(Notes 7, 8)
−40˚C TA 85˚C
−40˚C TA
125˚C
0.1 1
25
pA
0.1 1
100
IOS
CMRR
PSRR
CMVR
Input Offset Current
Common Mode Rejection
Ratio
Power Supply Rejection
Ratio
Input Common-Mode Voltage
Range
(Note 8)
0V VCM 3.7V
2.0V V+ 5.5V, VCM = 0V
1.8V V+ 5.5V, VCM = 0V
CMRR 60 dB
CMRR 55 dB
80
75
80
75
80
−0.3
-0.3
10
100
100
98
4
4
fA
dB
dB
V
AVOL
Large Signal Voltage Gain
VOUT = 0.3V to 4.7V,
RLOAD = 2 kto V+/2
LMV796
LMV797
85 97
80
82 89
78
dB
VOUT = 0.3V to 4.7V,
RLOAD = 10 kto V+/2
88 110
84
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5V Electrical Characteristics (Continued)
VOUT Output Swing High
Output Swing Low
RLOAD = 2 kto V+/2
RLOAD = 10 kto V+/2
RLOAD = 2 kto V+/2 LMV796
LMV797
IOUT
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IS
RLOAD = 10 kto V+/2
Output Short Circuit Current
Supply Current per Amplifier
Sourcing to V
VIN = 200 mV (Note 9)
Sinking to V+
VIN = –200 mV (Note 9)
LMV796
SR
GBWP
en
in
THD+N
Slew Rate
Gain Bandwidth Product
Input-Referred Voltage Noise
Input-Referred Current Noise
Total Harmonic Distortion +
Noise
LMV797
per channel
AV = +1, Rising (10% to 90%)
AV = +1, Falling (90% to 10%)
f = 1 kHz
f = 1 kHz
f = 1 kHz, AV = 1, RLOAD = 600
35 75
82
25 65
71
42 75 mV from
78 rail
50 80
83
20 65
67
45 60
37
10 21
6
mA
1.15
1.30
1.40
1.75
1.70
2.05
mA
6.0 9.5
7.5 11.5
V/µs
17 MHz
5.8 nV/
0.01
pA/
0.01
%
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 Tables.
Note 2: Human Body Model is 1.5 kin series with 100 pF. Machine Model is 0in series with 200 pF
Note 3: The maximum power dissipation is a function of TJ(MAX), θJA. The maximum allowable power dissipation at any ambient temperature is
PD = (TJ(MAX) - TA)/θJA. All numbers apply for packages soldered directly onto a PC Board.
Note 4: Typical values represent the parametric norm at the time of characterization.
Note 5: Limits are 100% production tested at 25˚C. Limits over the operating temperature range are guaranteed through correlations using the statistical quality
control (SQC) method.
Note 6: Offset voltage average drift is determined by dividing the change in VOS by temperature change.
Note 7: Positive current corresponds to current flowing into the device.
Note 8: Input bias current and input offset current are guaranteed by design
Note 9: The short circuit test is a momentary test, the short circuit duration is 1.5 ms.
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