Description:

The TPA158 is a series of high-side current-senseamplifiers with high common voltage. The TPA158 serieshas very high precision and accuracy specifications of VOSless than 150 μV (max) and gain error less than 0.55%(max). Five fixed gains are available: 20 V/V, 50 V/V, 100V/V, 200 V/V, and 500 V/V. These options provide a widedynamic range for current-sensing applications.The TPA158 series features an input common-modevoltage range from 3 V to 150 V with 1-MHz bandwidth,which makes it ideal for small-signal conditioninginterfacing with a SAR ADC.The TPA158 offers breakthrough performance throughoutthe −40°C to +125°C temperature range. It features azero-drift core, which leads to a maximum offset drift of0.1μV/°C throughout the operating temperature range andthe common-mode voltage range. The TPA158 is offeredin the SOT23-5 package.

Features:

• Voltage Offset: ±150 μV (Max)

• Wide Common-Mode Voltage: 3.0 V to 150 V

• Supply Voltage: 3.0 V to 20 V

• Accuracy and Zero-Drift Performance:

– 0.55% Gain Error (Max over Temperature)

– 20-ppm/°C Gain Drift (Max over Temperature)

– 0.1-μV/°C Offset Drift (Typ)

• Multiple Gain Options for Voltage Output:

– TPA158x1: 20 V/V

– TPA158x2: 50 V/V

– TPA158x3: 100 V/V

– TPA158x4: 200 V/V

– TPA158x5: 500 V/V

• High Bandwidth: 1 MHz (TPA158x1, x2, x3, x4)

• Rail-to-Rail Output

• Industrial Operation Range: –40°C to 125°C

Applications:

• Current Sensing (High-Side)

• Battery Chargers

• Power Management

• Automotive

• Server Backplanes

• Base Stations and Telecom Equipment

• Industrial Control and Automation