Datasheet

LT1996
3
1996f
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
CMRR Common Mode Rejection Ratio (RTI) V
S
= ±15V; G = 81; V
CM
= –14.1V to 13.9V
LT1996AMS
● 105 120 dB
LT1996ADD
● 100 120 dB
LT1996
● 85 120 dB
V
CM
Input Voltage Range (Note 7) P9/M9 Inputs
V
S
= ±15V; V
REF
= 0V ● –15.5 15.3 V
V
S
= 5V, 0V; V
REF
= 2.5V ● 0.84 3.94 V
V
S
= 3V, 0V; V
REF
= 1.25V ● 0.98 1.86 V
P9/M9 Inputs, P81/M81 Connected to REF
V
S
= ±15V; V
REF
= 0V ● –60 60 V
V
S
= 5V, 0V; V
REF
= 2.5V ● –12.6 15.6 V
V
S
= 3V, 0V; V
REF
= 1.25V ● –1.25 6.8 V
P27/M27 Inputs
V
S
= ±15V; V
REF
= 0V ● –14.5 14.3 V
V
S
= 5V, 0V; V
REF
= 2.5V ● 0.95 3.84 V
V
S
= 3V, 0V; V
REF
= 1.25V ● 1 1.82 V
P81/M81 Inputs
V
S
= ±15V; V
REF
= 0V ● –14.1 13.9 V
V
S
= 5V, 0V; V
REF
= 2.5V ● 0.99 3.81 V
V
S
= 3V, 0V; V
REF
= 1.25V ● 1 1.8 V
V
OS
Op Amp Offset Voltage (Note 8) LT1996AMS, V
S
= 5V, 0V 15 50 µV
● 135 µV
LT1996AMS, V
S
= ±15V 15 80 µV
● 160 µV
LT1996MS 25 100 µV
● 200 µV
LT1996DD 25 150 µV
● 250 µV
∆V
OS
/∆T Op Amp Offset Voltage Drift (Note 6) ● 0.3 1 µV/°C
I
B
Op Amp Input Bias Current 2.5 5 nA
● 7.5 nA
I
OS
Op Amp Input Offset Current LT1996A 50 500 pA
● 750 pA
LT1996 50 1000 pA
● 1500 pA
Op Amp Input Noise Voltage 0.01Hz to 1Hz 0.35 µV
P-P
0.01Hz to 1Hz 0.07 µV
RMS
0.1Hz to 10Hz 0.25 µV
P-P
0.1Hz to 10Hz 0.05 µV
RMS
e
n
Input Noise Voltage Density G = 9; f = 1kHz 46 nV/√Hz
(Includes Resistor Noise) G = 117; f = 1kHz 18 nV/√Hz
R
IN
Input Impedance (Note 10) P9 (M9 = Ground) ● 350 500 650 kΩ
P27 (M27 = Ground)
● 326.9 467 607.1 kΩ
P81 (M81 = Ground)
● 319.2 456 592.8 kΩ
M9 (P9 = Ground) ● 35 50 65 kΩ
M27 (P27 = Ground)
● 11.69 16.7 21.71 kΩ
M81 (P81 = Ground)
● 3.85 5.5 7.15 kΩ
The ● denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. Difference amplifier configuration, V
S
= 5V, 0V or ±15V;
V
CM
= V
REF
= half supply, unless otherwise noted.
ELECTRICAL CHARACTERISTICS