SGM8194 Bidirectional, Low Power, Zero-Drift, Precision Current-Sense Amplifier
●The SGM8194 series is a low power, high DC and AC CMRR, voltage output current-sense amplifier. This device is designed to provide optimal performance in battery management systems requiring over-current protection and precision current measurement. The SGM8194 can sense voltage drops across current-sense resistor with common mode voltage from -0.1V to 40V. The common mode voltage is independent with the power supply voltage due to its AC coupling and related signal sampling structure.
●The SGM8194 features low input bias current, low offset voltage and zero-drift. The dynamic range is extended due to the latter two features when measuring current. Larger current-sense resistor can be used in mA level measurement application and it provides accurate current measurements. Small current-sense resistor is always used to reduce power loss in power efficiency sensitive systems. The SGM8194 can provide accurate current measurements in system where small current-sense resistor is used.
●The SGM8194 series provides two fixed gains: 100V/V and 200V/V. It operates with a single power supply from 2.1V to 5.5V, and draws only 60μA typical power supply current.
●The SGM8194 is available in a Green SC70-6 package. It is rated over the -40 °C to +125 °C temperature range.
■FEATURES:
●Operating Power Supply Range: 2.1V to 5.5V
●Common Mode Voltage Range: -0.1V to 40V
●CMRR: 150dB (TYP)
●Low Offset Voltage: ±50μV (MAX)
●Low Bias Current: 0.5nA (TYP)
●Supply Current: 60μA (TYP)
●Choice of Gains:
◆SGM8194A3 Gain: 100V/V
◆SGM8194A4 Gain: 200V/V
●Gain Error: ±0.4% (MAX)
●Supports Bidirectional Current Sense
●-40°C to +125°C Operating Temperature Range
●Available in a Green SC70-6 Package
SGM8194 、 SGM8194A4 、 SGM8194A3 、 SGM8194 series 、 SGM8194A3XC6G/TR 、 SGM8194A4XC6G/TR |
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Bidirectional, Low Power, Zero-Drift, Precision Current-Sense Amplifier 、 low power, high DC and AC CMRR, voltage output current-sense amplifier |
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[ Battery Fuel Gauge ][ Notebook PC ][ Tablet PC ] |
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Datasheet |
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Please see the document for details |
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SC70-6 |
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English Chinese Chinese and English Japanese |
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JUNE 2023 |
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REV. A |
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660 KB |
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