Datasheet

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SBOS168D − DECEMBER 2000 − REVISED JANUARY 2006
www.ti.com
3
ELECTRICAL CHARACTERISTICS: V
S
= +2.7V to +5.5V
BOLDFACE limits apply over the specified temperature range, T
A
= −555C to +1255C.
At T
A
= +25°C, R
L
= 25kΩ, G = 25, and I
A
common = V
S
/2, unless otherwise noted.
INA321E
INA321EA
INA2321EA
PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX UNIT
INPUT
Input Offset Voltage, RTI V
S
= +5V ±0.2 ±0.5 ∗ 1 mV
Over Temperature V
OS
±2.2 2.5 mV
vs Temperature dV
OS
/dT ±7 * µV/°C
vs Power Supply PSRR V
S
= +2.7V to +5.5V ±50 ±200 ∗ ∗ µV/V
Over Temperature ±220 * µV/V
Long-Term Stability ±0.4 ∗ µV/month
Input Impedance 10
13
|| 3 ∗ Ω || pF
Input Common-Mode Range V
S
= 2.7V 0.35 1.5 ∗ ∗ V
V
S
= 5V 0.55 3.8 ∗ ∗ V
Common-Mode
Rejection
CMRR V
S
= 5V, V
CM
= 0.55V to 3.8V 90 94 80 ∗ dB
Over Temperature V
S
= 5V, V
CM
= 0.55V to 3.8V 77 75 dB
V
S
= 2.7V, V
CM
= 0.35V to 1.5V 94 ∗ dB
Crosstalk, Dual 110 ∗ dB
INPUT BIAS CURRENT
Bias Current I
B
±0.5 ±10 ∗ ∗ pA
Offset Current I
OS
±0.5 ±10 ∗ ∗ pA
NOISE, RTI e
n
R
S
= 0Ω
Voltage Noise: f = 10Hz 500 ∗ nV/√Hz
f = 100Hz 190 ∗ nV/√Hz
f = 1kHz 100 ∗ nV/√Hz
f = 0.1Hz to 10Hz 20 ∗ µV
PP
Current Noise: f = 1kHz 3 ∗ fA/√Hz
GAIN
(1)
Gain Equation, Externally Set G > 5 G = 5 + 5 (R2/R1) ∗
Range of Gain 5 1000 ∗ ∗ V/V
Gain Error ±0.02 ±0.1 ∗ ∗ %
vs Temperature G = 5 ±2 ±10 * * ppm/°C
Nonlinearity G = 25, V
S
= 5V, V
O
= 0.05 to 4.95 ±0.001 ±0.010 ∗ ∗ % of FS
Over Temperature ±0.002 ±0.015 * * % of FS
OUTPUT
Output Voltage Swing from Rail
(2, 5)
G ≥ 10 50 25 ∗ ∗ mV
Over Temperature 50 * mV
Capacitance Load Drive See Typical Characteristic
(3)
∗ pF
Short-Circuit Current +I
SC
8
−I
SC
16 ∗ mA
NOTE
:
∗ Specification is same as INA321E.
(1)
Does not include errors from external gain setting resistors.
(2)
Output voltage swings are measured between the output and power-supply rails.
(3)
See typical characteristic Percent Overshoot vs Load Capacitance.
(4)
See typical characteristic Shutdown Voltage vs Supply Voltage.
(5)
Output does not swing to positive rail if gain is less than 10.