TPA191 Zero-Drift, Bi-Directional Current Sense Amplifier
●The TPA191 series of zero-drift, bi-directional current sense amplifier can sense voltage drops across shunts at common-mode voltages from −0.3 V to 36 V, independent of the supply voltage. Five fixed gains are available: 20 V/V, 50 V/V, 75 V/V, 100 V/V, and 200 V/V. The integration matched gain resistor network minimizes gain errors and reduces the temperature drift. The low offset of the zero-drift architecture enables current sensing with the maximum drops across the shunt as low as 10-mV full-scale.
●The TPA191 devices operate from a single 2.7-V to 36-V power supply, with drawing a typical of 80-μA supply current. All versions are specified from −40°C 125°C, and offered in the SOT363 package.
■Features
●Voltage Offset:
▲±50 μV (Max) at VCM = 2.75 V
▲±180 μV (Max) at VCM = 12 V
●Wide Common-Mode Voltage: −0.3 V to +36 V
●Supply Voltage: 2.7 V to 36 V
●Accuracy and Zero-Drift Performance
▲±1% Gain Error (Max over temperature)
▲0.2 μV/°C Offset Drift (Typ)
▲10 ppm/°C Gain Drift (Max)
●Three Gain Options for Voltage Output
▲TPA191A1: 20 V/V
▲TPA191A2: 50 V/V
▲TPA191A3: 75 V/V
▲TPA191A4: 100 V/V
▲TPA191A5: 200 V/V
●Low Supply Current: 80 μA (Typ)
●Rail-to-Rail Output
●Package: SOT363
●Industrial −40°C to 125°C Operating Range
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TPA191 、 TPA191 series 、 TPA191A1 、 TPA191A2 、 TPA191A3 、 TPA191A4 、 TPA191A5 、 TPA191A1-SC6R 、 TPA191A2-SC6R 、 TPA191A3-SC6R 、 TPA191A4-SC6R 、 TPA191A5-SC6R 、 TPA191 family |
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[ Battery Charger ][ Power Management ][ Cell Phone Charger ][ Electrical Cigarette ][ Wireless Charger ][ Telecom Equipment ] |
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Datasheet |
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Please see the document for details |
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SOT363;SC6;SOT363-6-A |
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English Chinese Chinese and English Japanese |
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2023-03-15 |
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Rev.A.0 |
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AA20221201A0 |
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2.1 MB |
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