onsemi NCS7041 and NCV7041
Current sense amplifier 80V, high side, low side, 100 kHz, Micro-8
The NCS7041 and NCV7041 are high voltage, high resolution, current sense amplifiers. They feature gain options of 14, 20, 50, and 100 V/V, with a maximum ±0.3% gain error over the entire temperature range. Each part consists of a preamplifier and buffer with access to output and input via A1 and A2 pins for an intermediate filter network or modified gain. These parts offer excellent input common−mode rejection from -6 V to 80 V. The NCS7041 can perform unidirectional or bidirectional current measurements across a sense resistor in a variety of applications. Automotive qualified options are available under NCV prefix. All versions are specified over the extended operating temperature range from -40°C to 150°C.
Key features
- Operating voltage range from 3V to 5.5V
- Common mode input voltage range from -6V to 80V
- Total gain, preamplifier and buffer is 14V/V typical at (VS = 5V, TA = +25°C)
- Gain error is 0.3% maximum at (VS = 5V, TA = +25°C, VCM = 12V, VREF = 2.5V, RL = 10KΩ)
- Input offset voltage drift is 3µV/°C maximum at (VS = 5V, TA = +25°C, VCM = 12V, VREF = 2.5V)
- Bandwidth is 100KHz typical at (VS = 5V, TA = +25°C, VCM = 12V, VREF = 2.5V, RL = 10KΩ)
- Common mode rejection ratio is 75dB typical at (f = 10KHz, VCM = 12V, 1VPP, G = 14)
- Quiescent current is 1.5mA typical at (VS = 5V, TA = +25°C, VCM = 12V, VREF = 2.5V)
- Power supply rejection ratio is 90dB typical at (VS = 5V, TA = +25°C, VCM = 12V, VREF = 2.5V)
- Ambient temperature range from -40°C to 150°C, Micro8 package
Applications
- Motor control
- Power supply
- Power monitoring
- On board charger
- Battery management systems
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