WS74285M-8/TR

The WS74285 dual-channel high-side current-sense amplifier has precision accuracy specifications of VOS less than 70μv (max) and gain error less than 0.1% (max). The WS74285 features an input common-mode voltage range from 2.7V to 76V with 400kHz of small-signal bandwidth, which makes it ideal for interfacing with a SARADC for multichannel multiplexed data acquisition systems. The WS74285 operates over the -40°C to +125°C temperature range. The WS74285 is offered in 8-pin MSOP and CSP package. The WS74285 high-side, current-sense amplifier features a 2.7V to 76V input common-mode range that is independent of supply voltage. This feature allows the monitoring of supply voltage. This feature allows the monitoring of current out of a battery as low as 2.7V and enables high-side current sensing at voltages greater than the supply voltage (VDD). The WS74285 monitors current through a current-sense resistor and amplifies the voltage across the resistor. High-side current monitoring does not interfere with the ground path of the load being measured, making the WS74285 particularly useful in a wide range of high-voltage systems.

Applications

• Base Stations and Communication Equipment
• Power Management Systems
• Server Backplanes
• Industrial Control and Automation

Key features

• 2.7V to 76V Input Common Mode
• Low 70μv (max) Input Offset Voltage
• Low 0.1% (max) Gain Error
• Gain Options G = 12.5V/V (WS74285x1), G = 20V/V (WS74285), G = 50V/V (WS74285x3), G = 100V/V (WS74285x4)
• 8-Pin MSOP Package
• 8-Pin CSP Package