Datasheet

INA129-EP
www.ti.com SBOS508 –DECEMBER 2009
ELECTRICAL CHARACTERISTICS
At T
A
= 25°C, V
S
= ±15 V, R
L
= 10 kΩ (unless otherwise noted)
Boldface limits apply over the specified temperature range, T
A
= –55°C to 125°C.
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
INPUT
Offset Voltage, RTI
T
A
= 25°C ±100 ±800/G
Initial µV
Over temperature ±150 ±2050/G
T
A
= 25°C, V
S
= ±2.25 V to ±18 V ±1.6 ±175/G
vs power supply µV/V
Over temperature ±1.8 ±175/G
Long-term stability ±1 ±3/G µV/mo
Impedance, differential 10
10
|| 2 Ω || pF
Common mode 10
11
||9 Ω || pF
Common mode voltage range
(1)
V
O
= 0 V (V+) − 2 (V+) − 1.4 V
(V−) + 2 (V−) + 1.7 V
Safe input voltage ±40 V
G = 1 75 86
Over temperature 67
G = 10 93 106
Over temperature 84
V
CM
= ±13 V,
Common-mode rejection dB
ΔR
S
= 1 kΩ
G = 100 113 125
Over temperature 98
G = 1000 113 130
Over temperature 98
CURRENT
±2 ±8
Bias current nA
Over temperature ±16
±1 ±8
Offset Current nA
Over temperature ±16
NOISE
f = 10 Hz 10
f = 100 Hz 8 nV/√Hz
G = 1000,
Noise voltage, RTI
R
S
= 0 Ω
f = 1 kHz 8
f
B
= 0.1 Hz to 10 Hz 0.2 µVpp
f = 10 Hz 0.9
pA/√Hz
G = 1000,
Noise current f = 1 kHz 0.3
R
S
= 0 Ω
f
B
= 0.1 Hz to 10 Hz 30 pA
PP
GAIN
1 +
Gain equation V/V
(49.4 kΩ/R
G
)
Range of gain 1 10000 V/V
G = 1 ±0.05 ±0.1
Over temperature ±0.15
G = 10 ±0.02 ±0.5
Gain error Over temperature ±0.65 %
G = 100 ±0.05 ±0.65
Over temperature ±1.1
G = 1000 ±0.5 ±2
(1) Input common-mode range varies with output voltage — see typical curves.
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