The TPA1295 family is of high voltage, Bi-directional current sense amplifier with voltage output. The TPA1295 can sense drops across shunts at common-mode voltages from – 0.3V to 70 V. The TPA1295 are available with three output voltage scales: 20V/V, 50V/V, 100V/V, with up to 500KHz bandwidth.

The TPA1295 operates from single 3V to 18V supply, offers breakthrough performance throughout the −40°C to +125°C temperature range. It features a zero-drift core, which leads to a typical offset drift of 0.4μV/°C throughout the operating temperature range and the common-mode voltage range.

The TPA1295 family is offered in 8-pin SOP package.

Features

◼ SMALL VOLTAGE OFFSET: ◆ TPA1295: ±100uV (MAX)

◼ WIDE COMMON MODE VOLTAGE: -0.3V to +70V

◼ WIDE CMRR THROUGH COMMON VOLTAGE: 130dB

◼ SUPPLY VOLTAGE: 3V to +18V

◼ ACCURACY and ZERO-DRIFT PERFORMANCE

◆ ±0.5% Gain Error (Max, -40°C ~125°C) ◆ 0.5μV/°C Offset Drift (Max, -40°C ~125°C) ◆ 5ppm/°C Gain Drift (Max, -40°C ~125°C)

◼ THREE GAIN OPTIONS for VOLTAGE OUTPUT

◆ TPA1295T: 20V/V ◆ TPA1295F: 50V/V ◆ TPA1295H: 100V/V

Applications

◼ CURRENT SENSING (High−Side/Low-Side)

◼ BATTERY CHARGERS & POWER MANAGEMENT

◼ AUTOMOTIVE

◼ INDUSTRIAL CONTROL AND AUTOMATION

◼ BASE STATIONS & TELECOM EQUIPMENT