onsemi NCS70x1/NCV70x1 Current Sense Amplifiers
onsemi NCS70x1/NCV70x1 Current Sense Amplifiers are high voltage, high resolution, current sense amplifiers that feature gain options of 14V, 20V, 50V, and 100V, with a maximum ±0.3% gain error over the entire temperature range. These amplifiers consist of a preamplifier and buffer with access to output/input via A1 and A2 pins for an intermediate filter network or modified gain. These parts have a wide common mode input voltage range from -6V to 80V. The NCS70x1 amplifiers can perform unidirectional or bidirectional current measurements across a sense resistor in a variety of applications. Automotive-qualified options are available (NCV prefix). All versions are specified over an extended -40°C to +150°C operating temperature range.
Features
- 100kHz gain bandwidth
- ±300µV maximum input offset voltage
- ±3µV/°C maximum input offset drift over temperature
- ±0.3% maximum gain error
- 1.5mA typical quiescent current
- 3V to 5.5V supply voltage range
- -6V to 80V common-mode input voltage range
- 85dB minimum CMRR
- 75dB minimum PSRR
- Low-pass filter (1- or 2-pole)
- NCV prefix for automotive and other applications requiring unique site and control change requirements, AEC-Q100 qualified and PPAP capable
- Lead-free
Applications
- Telecom equipment
- Power supply designs
- Diesel injection control
- Automotive
- Solenoids/actuators
Additional Resources
Simplified Representative Block Diagram
Application Schematics
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