ELECTRICAL CHARACTERISTICS: VS = +1.8V to +5.5V
www.ti.com ..................................................................................................................................................... SBOS445B – JULY 2008 – REVISED OCTOBER 2008
Boldface limits apply over the specified temperature range, TA = –40°C to +125°C.
At TA = +25°C, RL = 10k, VREF = VS/2, and G = 1, unless otherwise noted.
INA333
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
INPUT(1)
Offset voltage, RTI(2)
VOSI
±10 ±25/G
±25 ±75/G
V
vs Temperature
±0.1 ±0.5/G
V/°C
vs Power supply
PSR
1.8V
≤ VS ≤ 5.5V
±1 ±5/G
±5 ±15/G
V/V
Long-term stability
See note (3)
Turn-on time to specified VOSI
See Typical characteristics
Impedance
Differential
ZIN
100 || 3
G
|| pF
Common-mode
ZIN
100 || 3
G
|| pF
Common-mode voltage range
VCM
VO = 0V
(V–) + 0.1
(V+) – 0.1
V
Common-mode rejection
CMR
DC to 60Hz
G = 1
VCM = (V–) + 0.1V to (V+) – 0.1V
80
90
dB
G = 10
VCM = (V–) + 0.1V to (V+) – 0.1V
100
110
dB
G = 100
VCM = (V–) + 0.1V to (V+) – 0.1V
100
115
dB
G = 1000
VCM = (V–) + 0.1V to (V+) – 0.1V
100
115
dB
INPUT BIAS CURRENT
Input bias current
IB
±70
±200
pA
vs Temperature
See Typical Characteristic curve
pA/°C
Input offset current
IOS
±50
±200
pA
vs Temperature
See Typical Characteristic curve
pA/°C
INPUT VOLTAGE NOISE
Input voltage noise
eNI
G = 100, RS = 0
f = 10Hz
50
nV/
√Hz
f = 100Hz
50
nV/
√Hz
f = 1kHz
50
nV/
√Hz
f = 0.1Hz to 10Hz
1
V
PP
Input current noise
iN
f = 10Hz
100
fA/
√Hz
f = 0.1Hz to 10Hz
2
pAPP
GAIN
Gain equation
G
1 + (100k
/RG)
V/V
Range of gain
1
1000
V/V
Gain error
VS = 5.5V, (V–) + 100mV ≤ VO ≤ (V+) – 100mV
G = 1
±0.01
±0.1
%
G = 10
±0.05
±0.25
%
G = 100
±0.07
±0.25
%
G = 1000
±0.25
±0.5
%
(1)
Total VOS, Referred-to-input = (VOSI) + (VOSO/G).
(2)
RTI = Referred-to-input.
(3)
300-hour life test at +150°C demonstrated randomly distributed variation of approximately 1
V.
Copyright 2008, Texas Instruments Incorporated
3
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