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INA321 Datasheet(PDF) 3 Page - Texas Instruments |
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INA321 Datasheet(HTML) 3 Page - Texas Instruments |
3 / 18 page INA321 INA2321 SBOS168B − DECEMBER 2000 − REVISED JULY 2004 www.ti.com 3 ELECTRICAL CHARACTERISTICS: VS = +2.7V to +5.5V BOLDFACE limits apply over the specified temperature range, TA = −555C to +1255C. At TA = +25°C, RL = 25kΩ, G = 25, and IA common = VS/2, unless otherwise noted. INA321E INA321EA INA2321EA PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX UNIT INPUT Input Offset Voltage, RTI VS = +5V ±0.2 ±0.5 ∗ 1 mV Over Temperature VOS ±2.2 2.5 mV vs Temperature dVOS/dT ±7 * µV/°C vs Power Supply PSRR VS = +2.7V to +5.5V ±50 ±200 ∗ ∗ µV/V Over Temperature ±220 * µV/V Long-Term Stability ±0.4 ∗ µV/month Input Impedance 1013 || 3 ∗ Ω || pF Input Common-Mode Range VS = 2.7V 0.35 1.5 ∗ ∗ V VS = 5V 0.55 3.8 ∗ ∗ V Common-Mode Rejection CMRR VS = 5V, VCM = 0.55V to 3.8V 90 94 80 ∗ dB Over Temperature VS = 5V, VCM = 0.55V to 3.8V 77 75 dB VS = 2.7V, VCM = 0.35V to 1.5V 94 ∗ dB Crosstalk, Dual 110 ∗ dB INPUT BIAS CURRENT Bias Current IB ±0.5 ±10 ∗ ∗ pA Offset Current IOS ±0.5 ±10 ∗ ∗ pA NOISE, RTI en RS = 0Ω Voltage Noise: f = 10Hz 500 ∗ nV/ √Hz f = 100Hz 190 ∗ nV/ √Hz f = 1kHz 100 ∗ nV/ √Hz f = 0.1Hz to 10Hz 20 ∗ µVPP 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, VS = 5V, VO = 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 +ISC 8 −ISC 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. |
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