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LT1792 Datasheet(PDF) 4 Page - Linear Technology

Part No. LT1792
Description  Low Noise, Precision, JFET Input Op Amp
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Maker  LINER [Linear Technology]
Homepage  http://www.linear.com
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LT1792 Datasheet(HTML) 4 Page - Linear Technology

 
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LT1792
ELECTRICAL C
C
HARA TERISTICS The q denotes specifications which apply over the temperature range
–40
°C ≤ TA ≤ 85°C. VS = ±15V, VCM = 0V, unless otherwise noted. (Notes 8, 9)
SYMBOL
PARAMETER
CONDITIONS (Note 2)
MIN
TYP
MAX
MIN
TYP
MAX
UNITS
VOS
Input Offset Voltage
q
0.5
1.0
1.2
3.7
mV
VS = ±5V
q
0.8
1.4
1.5
4.2
mV
∆VOS
Average Input Offset
(Note 6)
q
410
7
40
µV/°C
∆Temp
Voltage Drift
IOS
Input Offset Current
q
300
800
300
800
pA
IB
Input Bias Current
q
1200
4000
1200
4000
pA
VCM
Input Voltage Range
q
12.6
13.0
12.6
13.0
V
q
–10.0
–10.5
–10.0
–10.5
V
CMRR
Common Mode Rejection Ratio
VCM = –10V to 12.6V
q
80
103
78
98
dB
PSRR
Power Supply Rejection Ratio
VS = ±4.5V to ± 20V
q
83
98
79
96
dB
AVOL
Large-Signal Voltage Gain
VO = ±12V, RL = 10k
q
850
3300
750
3000
V/mV
VO = ±10V, RL = 1k
q
400
2200
300
2000
V/mV
VOUT
Output Voltage Swing
RL = 10k
q
±12.8 ±13.1
±12.8 ±13.1
V
RL = 1k
q
±11.8 ±12.1
±11.8 ±12.1
V
SR
Slew Rate
RL ≥ 2k
q
2.0
3.0
2.0
3.0
V/
µs
GBW
Gain-Bandwidth Product
fO = 100kHz
q
2.9
4.3
2.9
4.3
MHz
IS
Supply Current
q
4.2
5.40
4.2
5.40
mA
VS = ±5V
q
4.2
5.35
4.2
5.35
mA
Note 6: This parameter is not 100% tested.
Note 7: Slew rate is measured in AV = – 1; input signal is ±7.5V, output
measured at
±2.5V.
Note 8: The LT1792AC and LT1792C are guaranteed to meet specified
performance from 0
°C to 70°C and are designed, characterized and
expected to meet these extended temperature limits, but are not tested at
–40
°C and 85°C. The LT1792I is guaranteed to meet the extended
temperature limits. The LT1792AC and LT1792AI grade are 100%
temperature tested for the specified temperature range.
Note 9: The LT1792 is measured in an automated tester in less than one
second after application of power. Depending on the package used,
power dissipation, heat sinking, and air flow conditions, the fully
warmed-up chip temperature can be 10
°C to 50°C higher than the
ambient temperature.
Note 1: Absolute Maximum Ratings are those values beyond which the
life of a device may be impaired.
Note 2: Typical parameters are defined as the 60% yield of parameter
distributions of individual amplifiers.
Note 3: Warmed-up IB and IOS readings are extrapolated to a chip
temperature of 32
°C from 25°C measurements and 32°C characterization
data.
Note 4: Current noise is calculated from the formula:
in = (2qIB)1/2
where q = 1.6 • 10 –19 coulomb. The noise of source resistors up to 200M
swamps the contribution of current noise.
Note 5: Input voltage range functionality is assured by testing offset
voltage at the input voltage range limits to a maximum of 2.3mV
(A grade), to 2.8mV (C grade).
LT1792AC/LT1792AI
LT1792C/LT1792I


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