Dual-Channel DAC facilitates power-supply margin testing.
Press Release Summary:
Housed in 8-pin µSOP, 7-bit I²C-controlled Model DS4432 features 2 output channels, each providing fine control of DC-DC power supply by sinking or sourcing current directly into power supply's feedback node. Full-scale output currents are set between 50-200 µA using one external resistor for each channel. Through I²C bus, output currents can then be set to any of 127 linear sink or 127 linear source steps up to maximum full-scale value.
Original Press Release:
Low-Cost, Dual-Channel, Sink/Source Current DAC Greatly Simplifies Power-Supply Margin Testing
Low-cost, 7-bit current DAC simplifies power-supply margin testing.
SUNNYVALE, CA-July 8, 2009-Maxim Integrated Products (NASDAQ: MXIM) introduces the DS4432 low-cost, dual-channel, sink/source current DAC. This I²C-controlled, 7-bit current DAC features two output channels that are explicitly designed for power-supply margin testing and adjustment. Each output channel provides fine control of a DC-DC power supply by sinking or sourcing current directly into the power supply's feedback node. The DS4432 offers lower full-scale current and higher resolution than legacy sink/source current DACs, thus expanding the range of existing DC-DC power supplies that can be margined and adjusted with minimal redesign. The DS4432 is ideal for servers, routers, switches, video processing cards, and other DC-DC power-supply applications requiring system-level voltage control, calibration, and margin testing.
The DS4432 powers up in a neutral (zero-current) output condition to minimize system-startup overhead requirements. To maximize simplicity and versatility, the full-scale output currents are set between 50µA and 200µA using one external resistor for each channel. Through the I²C bus, the output currents can then be set to any of the 127 linear sink or 127 linear source steps up to the maximum full-scale value.
The DS4432 is fully specified over the -40°C to +85°C extended industrial temperature range, and is available in a tiny 8-pin µSOP. Pricing starts at $0.45 (10,000-up, FOB USA).
Maxim Integrated Products is a publicly traded company that designs, manufactures, and sells high-performance semiconductor products. The Company reported revenue in excess of $2 billion for fiscal 2008. Maxim 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 6000 products serving the industrial, communications, consumer, and computing markets. For more information, go to www.maxim-ic.com.
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