CSA240 -6V to 80V, Bidirectional, Ultra-Precise Current Sense Amplifier With Enhanced PWM Rejection
●The CSA240 device is a current-sense amplifier with enhanced PWM rejection that can sense drops across shunt resistors over a wide common-mode voltage range from –6V to 80V, independent of the supply voltage. The enhanced PWM rejection function suppresses large common-mode transients (ΔV/Δt) in systems that use pulse width modulation (PWM) signals, such as motor drives and solenoid control systems. The negative common-mode voltage allows the device to operate below ground, accommodating the flyback period of typical solenoid applications. The features ensure the accurate current measurements without large transients and associated recovery ripple on the output voltage.
●This device operates from a single 2.7V to 5.5V power supply, drawing a typ of 1.7mA of supply current. Four fixed gains are available: 20V/V, 50V/V and 100V/V. The low offset of the zero-drift architecture enables current sensing with maximum drops across the shunt as low as 10mV full-scale. All versions are specified over the extended operating temperature range (–40°C to 125°C), and are offered in an 8-pin TSSOP and 8-pin SOIC packages. See Table 1 for the order information.
■FEATURES:
●Enhanced PWM rejection
●Excellent CMRR:
◆160dB DC CMRR
◆105dB AC CMRR at 50kHz
●Wide common-mode range: –6V to 80V
●Accuracy:
◆Gain:
▲Gain error: 0.25% (maximum)
▲Gain drift: 6 ppm/°C (Typ)
◆Offset:
▲Offset voltage: ±5μV (Typ)
▲Offset drift: ±30nV/°C (Typ)
●Available gains:
◆CSA240L: 20V/V
◆CSA240M: 50V/V
◆CSA240N: 100V/V
●Quiescent current: 1.4mA (Typ)
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CSA240 、 CSA240N 、 CSA240M 、 CSA240L 、 CSA240 series |
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Bidirectional, Ultra-Precise Current Sense Amplifier 、 current-sense amplifier |
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[ motor drives ][ solenoid control systems ][ Motor ][ Solenoid ][ valve ][ Power management ][ Actuator ][ Pressure regulators ][ Telecom equipment ] |
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Datasheet |
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Please see the document for details |
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TSSOP;SOIC;TSSOP-8;SOIC-8 |
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English Chinese Chinese and English Japanese |
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29 April 2022 |
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Rel 0.1 |
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863 KB |
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