Maxim Announces New High-Side CSAs for Battery-Operated Devices That Require Precision Monitoring

Maxim Integrated Products introduced the MAX9634, the latest addition to its portfolio of high-side current-sense amplifiers (CSAs). Designed for space-constrained portable applications, the company says that the 1mm2 MAX9634 sets benchmarks for size, performance, and power consumption. Combined with its wide (1.6 to 28V) input-voltage range, these features make the MAX9634 well suited for a broad selection of battery-powered devices, including smartphones, digital cameras, PDAs, MP3 cameras, and notebook computers.

The MAX9634 is optimized for compact designs that require precision monitoring. This device consumes an industry-low 1microamp of quiescent current (IQ) to conserve battery life, and it is offered in the smallest package-a tiny, 1 x 1 x 0.6mm, 4-bump UCSP™, which is 9x smaller than competing SOT23-housed devices. The small size of the MAX9634 is even more impressive when viewed in conjunction with its superior performance. The device features an ultra-low ±250µV (max) Vos and 0.5% (max) gain error. This high accuracy simplifies designs, and eliminates the need to worry about worst-case error tolerances.

The MAX9634 is fully specified over the -40 to +85°C extended temperature range, and is available in 4-bump UCSP and 6-pin SOT23 packages. Prices start at $0.69 (1000-up, FOB USA).