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INA331 数据表(PDF) 3 Page - Texas Instruments |
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INA331 数据表(HTML) 3 Page - Texas Instruments |
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3 / 15 page  INA331, INA2331 SBOS215B 3 www.ti.com ELECTRICAL CHARACTERISTICS: VS = +2.7V to +5.5V Boldface limits apply over the specified temperature range, TA = –55°C to 125°C. At TA = +25°C, RL = 10kΩ, G = 25, and VREF = VS /2, unless otherwise noted. INA331AIDGK INA331IDGK INA2331AIPW PARAMETER CONDITION MIN TYP MAX MIN TYP MAX UNITS INPUT Input Offset Voltage, RTI VS = +5V ±250 ±500 ✻ ±1000 µV Over Temperature VOS ±1.7 ±2.1 mV Temperature Coefficient dVOS/dT ±5 ✱ µV/°C vs Power Supply PSRR VS = +2.7V to +5.5V ±50 ±200 ✻✻ µV/V vs 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 –40 °C to +85°CV S = 5V, VCM = 0.55V to 3.8V 77 75 dB Over Temperature VS = 5V, VCM = 0.55V to 3.8V 72 70 dB VS = 2.7V, VCM = 0.35V to 1.5V 94 ✻ dB Crosstalk, Dual 114 dB INPUT BIAS CURRENT VCM = VS /2 Bias Current IB ±0.5 ±10 ✻✻ pA Offset Current IOS ±0.5 ±10 ✻✻ pA NOISE, RTI RS = 0Ω Voltage Noise: f = 10Hz eN 280 ✻ nV/ √Hz f = 100Hz 96 ✻ nV/ √Hz f = 1kHz 46 ✻ nV/ √Hz f = 0.1Hz to 10Hz 7 ✻ µVp-p Current Noise: f = 1kHz iN 0.5 ✻ fA/ √Hz GAIN(1) Gain Equation, Externally Set G > 5 G = 5 + (5R2/R1) ✻ Range of Gain 5 1000 ✻✻ V/V Gain Error G = 5 ±0.02 ±0.1 ✻✻ % vs Temperature G = 5 ±2 ±10 ✱✱ ppm/ °C Nonlinearity G = 25(2), 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(3) RL = 10kΩ 50 25 ✻✻ mV Over Temperature G > 10 50 ✱ mV Capacitance Load Drive See Typical Characteristics ✻ pF Short-Circuit Current +48/–32 ✻ mA FREQUENCY RESPONSE Bandwidth, –3dB BW G = 25 2.0 ✻ MHz Slew Rate SR VS = 5V, G = 25 5 ✻ V/ µs Settling Time, 0.1% tS G = 25, CL = 100pF, VO = 2V step 1.7 ✻ µs 0.01% 2.5 ✻ µs Overload Recovery 50% Input Overload G = 25 2 ✻ µs POWER SUPPLY Specified Voltage Range +2.7 +5.5 ✻✻ V Operating Voltage Range +2.5 to +5.5 ✻ V Quiescent Current per Channel IQ VSD > 2.5(3) 415 490 ✻✻ µA Over Temperature 600 ✱ µA Shutdown Quiescent Current/Chan ISD VSD < 0.8(3) 0.01 1 ✻✻ µA TEMPERATURE RANGE Specified Range –55 +125 ✻✻ °C Operating/Storage Range –65 +150 ✻✻ °C Thermal Resistance θ JA MSOP-8, TSSOP-14 Surface Mount 150 ✻ °C/W ✻ Specifications same as INA331IDGK NOTES: (1) Does not include errors from external gain setting resistors. (2) Output voltage swings are measured between the output and power-supply rails. Output swings to rail only if G ≥ 10. Output does not swing to positive rail if gain is less than 10. (3) See typical characteristic “Percent Overshoot vs Load Capacitance.” (4) See typical characteristic “Shutdown Voltage vs Supply Voltage.” |
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