LT1789-1/LT1789-10
6
1789fc
SYMBOL PARAMETER CONDITIONS
LT1789-1 LT1789-10
UNITSMIN TYP MAX MIN TYP MAX
G Gain Range LT1789-1, G = 1 + (200k/R
G
)
LT1789-10, G = 10 • [1+ (200k/R
G
)]
1 1000
10 1000
Gain Error V
O
= ±10V
G = 1
G = 10 (Note 2)
G = 100 (Note 2)
G = 1000 (Note 2)
0.01
0.04
0.04
0.07
0.10
0.15
0.15
0.20
0.01
0.03
0.03
0.15
0.20
0.25
%
%
%
%
Gain Nonlinearity V
O
= ±10V
G = 1
G = 10
G = 100
G = 1000
8
1
6
20
20
10
20
100
5
5
25
40
40
160
ppm
ppm
ppm
ppm
V
OST
Total Input Referred Offset Voltage V
OST
= V
OSI
+ V
OSO
/G
V
OSI
Input Offset Voltage G = 1000 30 235 30 295 μV
V
OSO
Output Offset Voltage G = 1 (LT1789-1), G =10 (LT1789-10) 0.2 1 0.6 3.3 mV
I
OS
Input Offset Current 0.2 4 0.2 4 nA
I
B
Input Bias Current 17 40 17 40 nA
e
n
Input Noise Voltage, RTI f
O
= 0.1Hz to 10Hz
G = 1
G = 10
G = 100, 1000
5.0
1.5
1.0
4.6
1.1
μV
P-P
μV
P-P
μV
P-P
Total RTI Noise = √e
ni
2
+ (e
no
/G)
2
e
ni
Input Noise Voltage Density, RTI f
O
= 1kHz 49 90 53 95 nV/√Hz
e
no
Output Noise Voltage Density, RTI f
O
= 1kHz 330 270 nV/√Hz
i
n
Input Noise Current f
O
= 0.1Hz to 10Hz 19 19 pA
P-P
Input Noise Current Density f
O
= 1kHz 62 62 fA/√Hz
R
IN
Input Resistance 2 4.7 2 4.7 GΩ
C
IN
Input Capacitance Differential
Common Mode
20
17
20
17
pF
pF
V
CM
Input Voltage Range –15 –14 –15 –14 V
CMRR Common Mode Rejection Ratio 1k Source Imbalance, V
CM
= –15V to 14V
G = 1
G = 10
G = 100, 1000
80
98
102
89
108
117
93
102
108
123
dB
dB
dB
PSRR Power Supply Rejection Ratio LT1789-1 V
S
= ±1.25V to ±16V
LT1789-10 V
S
= ±1.50V to ±16V
G = 1
G = 10
G = 100, 1000
94
104
102
107
118
121
100
106
115
123
dB
dB
dB
Minimum Supply Voltage ±1.25 ±1.50 V
I
S
Supply Current 85 130 85 130 μA
V
O
Output Voltage Swing ±14.5 ±14.7 ±14.5 ±14.7 V
I
SC
Short-Circuit Current Short to –V
S
Short to +V
S
2.2
8.5
2.2
8.5
mA
mA
ELECTRICAL CHARACTERISTICS
V
S
= ±15V, R
L
= 20k, V
CM
= V
OUT
= 0V, T
A
= 25°C, unless otherwise noted.
