LT1789-1/LT1789-10
5
1789fc
ELECTRICAL CHARACTERISTICS
The l denotes the specifications which apply over the temperature range of
–40°C ≤ T
A
≤ 85°C. V
S
= 3V, 0V; V
S
= 5V, 0V; R
L
= 20k, V
REF
= half supply, unless otherwise noted. (Note 4)
SYMBOL PARAMETER CONDITIONS
LT1789-1 LT1789-10
UNITSMIN TYP MAX MIN TYP MAX
Gain Error (Note 6) G = 1, V
O
= 0.3V to (+V
S
) – 1V
l
0.30 %
V
O
= 0.3V to (+V
S
) – 0.5V
G = 10 (Note 2)
G = 100 (Note 2)
l
l
0.57
0.59
0.35
0.62
%
%
Gain Nonlinearity (Note 6) G = 1, V
O
= 0.3V to (+V
S
) – 1V
l
250 ppm
LT1789-1, V
O
= 0.3V to (+V
S
) – 0.5V
LT1789-10, V
O
= 0.3V to 4.7V, V
S
= 5V
(Note 8)
G = 10
G = 100
l
l
105
160
150
170
ppm
ppm
G/T Gain vs Temperature G < 1000 (Notes 2, 3)
l
5 50 5 50 ppm/°C
V
OST
Total Input Referred Offset Voltage V
OST
= V
OSI
+ V
OSO
/G
V
OSI
Input Offset Voltage G = 1000
l
175
205
µV
V
OSIH
Input Offset Voltage Hysteresis (Notes 3, 5)
l
3 10 3 10 µV
V
OSO
Output Offset Voltage G = 1 (LT1789-1), G = 10 (LT1789-10)
l
1050 4000 µV
V
OSOH
Output Offset Voltage Hysteresis (Notes 3, 5)
l
50 100 300 900 µV
V
OSI
/T Input Offset Voltage Drift (RTI) (Note 3)
l
0.2 0.5 0.3 0.7 µV/°C
V
OSO
/T Output Offset Voltage Drift (Note 3)
l
1.5
4 7 20 µV/°C
I
OS
Input Offset Current (Note 6)
l
55nA
I
OS
/T Input Offset Current Drift
l
3 3 pA/°C
I
B
Input Bias Current (Note 6)
l
50 50 nA
I
B
/T Input Bias Current Drift
l
50 50
pA/°C
V
CM
Input Voltage Range
l
0.2 +V
S
– 1 0.2 +V
S
– 1.5 V
CMRR Common Mode Rejection Ratio 1k Source Imbalance (Note 6)
LT1789-1, V
CM
= 0.2V to (+V
S
) – 1V
LT1789-10, V
CM
= 0.2V to (+V
S
) – 1.5V
G = 1
G = 10
G = 100, 1000
l
l
l
75
92
96
84
94
dB
dB
dB
PSRR Power Supply Rejection Ratio
V
S
= 2.5V to 12.5V, V
CM
= V
REF
= 1V
G = 1
G = 10
G = 100, 1000
l
l
l
86
96
98
90
98
dB
dB
dB
Minimum Supply Voltage
l
2.5 2.5 V
I
S
Supply Current
(Note 7)
l
125 125 µA
V
OL
Output Voltage Swing LOW (Note 7)
l
120
130 mV
V
OH
Output Voltage Swing HIGH (Note 7)
l
+V
S
– 0.40 +V
S
– 0.40 V
