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  4. onsemi — NCS(V)7030/NCS(V)7031 Current Sense Amplifiers

onsemi — NCS(V)7030/NCS(V)7031 Current Sense Amplifiers

 

onsemi

onsemi NCS(V)7030 / NCS(V)7031 Current Sense Amplifiers

High-accuracy current sensing with wide common-mode voltage range and flexible gain configuration

The NCS(V)7030 and NCS(V)7031 are high voltage, current sense amplifiers. They are available with gain options of 14 V/V and 20 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. The current sense amplifiers offer excellent input common−mode rejection from −6 V to 80 V.

They can perform unidirectional 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.

Features

  • Bandwidth: 100 kHz
  • Input Offset Voltage: ±300 μV Max Over Temp
  • Common−Mode Input Voltage Range: −6 V to 80 V
  • Gain Error: 0.3 % Max Over Temp
  • Low−Pass Filter (1−pole or 2−pole)
  • Offset Drift over Temperature: 3 μV/°C max
  • Quiescent Current: 1.5 mA Typ
  • Supply Voltage: 3 V to 5.5 V
  • CMRR: 90 dB Min
  • PSRR: 70 dB Min
  • These are Pb−free Devices

Applications

  • Telecom Equipment
  • Power Supply Designs
  • Diesel Injection Control
  • Automotive
  • Motor Control


onsemi NCS(V)7030 / NCS(V)7031 Current Sense Amplifiers