LT1792 Datasheet, PDF (4/12 Pages) Linear Technology – Low Noise, Precision, JFET Input Op Amp

LT1792
ELECTRICAL CHARACTERISTICS The q denotes specifications which apply over the temperature range
– 40°C ≤ T_A ≤ 85°C. V_S = ±15V, V_CM = 0V, unless otherwise noted. (Notes 8, 9)
SYMBOL PARAMETER
V_OS
Input Offset Voltage
∆V_OS
∆Temp
I_OS
I_B
V_CM
Average Input Offset
Voltage Drift
Input Offset Current
Input Bias Current
Input Voltage Range
CONDITIONS (Note 2)
V_S = ±5V
(Note 6)
CMRR
PSRR
A_VOL
V_OUT
SR
GBW
I_S
Common Mode Rejection Ratio
Power Supply Rejection Ratio
Large-Signal Voltage Gain
Output Voltage Swing
Slew Rate
Gain-Bandwidth Product
Supply Current
V_CM = –10V to 12.6V
V_S = ±4.5V to ± 20V
V_O = ±12V, R_L = 10k
V_O = ±10V, R_L = 1k
R_L = 10k
R_L = 1k
R_L ≥ 2k
f_O = 100kHz
V_S = ±5V
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 I_B and I_OS 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:
i_n = (2qI_B)^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
MIN TYP MAX
q
0.5 1.0
q
0.8 1.4
q
4
10
LT1792C/LT1792I
MIN TYP MAX
1.2 3.7
1.5 4.2
7
40
UNITS
mV
mV
µV/°C
q
300 800
q
1200 4000
q 12.6 13.0
q –10.0 –10.5
q 80 103
q 83 98
q 850 3300
q 400 2200
q ±12.8 ±13.1
q ±11.8 ±12.1
q 2.0 3.0
q 2.9 4.3
q
4.2 5.40
q
4.2 5.35
300 800
1200 4000
12.6 13.0
–10.0 –10.5
78 98
79 96
750 3000
300 2000
±12.8 ±13.1
±11.8 ±12.1
2.0 3.0
2.9 4.3
4.2 5.40
4.2 5.35
pA
pA
V
V
dB
dB
V/mV
V/mV
V
V
V/µs
MHz
mA
mA
Note 6: This parameter is not 100% tested.
Note 7: Slew rate is measured in A_V = – 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.
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