TPA191(3PEAK思瑞浦)
- 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
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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:
– ±100 μV (Max) at VCM = 2.75 V
– ±250 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
– TPA191A6: 500 V/V
– TPA191A7: 1000 V/V
• Low Supply Current: 80 μA (Typ)
• Rail-to-Rail Output • Package: SOT363
• Industrial −40°C to 125°C Operating Range
Applications
• Current Sensing (High−Side/Low−Side)
• Battery Charger
• Power Management
• Cell Phone Charger
• Electrical Cigarette
• Wireless Charger
• Telecom Equipment
Features
• Voltage Offset:
– ±100 μV (Max) at VCM = 2.75 V
– ±250 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
– TPA191A6: 500 V/V
– TPA191A7: 1000 V/V
• Low Supply Current: 80 μA (Typ)
• Rail-to-Rail Output • Package: SOT363
• Industrial −40°C to 125°C Operating Range
Applications
• Current Sensing (High−Side/Low−Side)
• Battery Charger
• Power Management
• Cell Phone Charger
• Electrical Cigarette
• Wireless Charger
• Telecom Equipment
