Current-sense amplifiers
with I²C output support wide common-mode range
http://www.maxim-ic.com/view_press_release.cfm/release_id/1802
CSAs integrate ADC and gain block for fault monitoring and closed-loop control.
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Maxim’s new CSAs include an ADC and an op amp/comparator for inrush-current limiting and gain control.
SUNNYVALE, CA—January 26, 2011
—Maxim Integrated Products (NASDAQ: MXIM) introduces theMAX9611/MAX9612, the latest additions to its industry-leading portfolio of high-side, current-sense amplifiers (CSAs).
Designed for industrial, consumer, and automotive applications that require digitized current-sense data, the MAX9611/MAX9612 integrate a 12-bit ADC and a gain block that can be configured as either an op amp or a comparator.
This integration provides the key components for easy implementation of fault monitoring and closed-loop control applications, such as inrush-current limiting and gain control.
The MAX9611/MAX9612 integrate an I²C-controlled, 12-bit, 500sps ADC for reading the sense-resistor current, input common-mode voltage, op-amp/comparator output, op-amp/comparator reference voltage, and internal die temperature. The I²C bus is compatible with 1.8V and 3.3V logic, providing a direct interface for modern microcontrollers.
These CSAs have a wide input common-mode voltage range (0V to +60V).
Programmable (440mV, 110mV, and 55mV) full-scale sense voltages enable a wide dynamic range, accurate current measurement, and flexibility in selecting sense resistor values. The MAX9611/MAX9612 are fully specified over the -40°C to +125°C automotive temperature range, and are available in a 10-pin µMAX® package. Prices start at $1.50 (1000-up, FOB USA).
Maxim Integrated Products is a publicly traded company that designs, manufactures, and sells high-performance semiconductor products. The Company was founded over 25 years ago with the mission to deliver innovative analog and mixed-signal engineering solutions that add value to its customers’ products. To date, it has developed over 6400 products serving the industrial, communications, consumer, and computing markets.
Maxim reported revenue of approximately $2.0 billion for fiscal 2010. A Fortune 1000 company, Maxim is included in the Nasdaq 100, the Russell 1000, and the MSCI USA indices. For more information, go to www.maxim-ic.com.
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