Product category:
Communications ICs (Wired)
News Release from: Maxim Integrated Products | Subject: DS4412
Edited by the Electronicstalk Editorial
Team on 21 February 2008
DAC takes control of power parameters
I2C-controlled 4bit current DAC features two output channels that are explicitly designed for power-supply margin testing and adjustment.
Maxim Integrated Products has released the DS4412 low-cost dual-channel sink/source current DAC This I2C-controlled 4bit current DAC features two output channels that are explicitly designed for power-supply margin testing and adjustment
This article was originally published on Electronicstalk on 27 Aug 2002 at 8.00am (UK)
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Each output channel provides control of a DC/DC power supply by sinking or sourcing current directly into the power supply's feedback node.
This DC/DC power-supply control allows existing power-supply designs to be margined and adjusted with minimal redesign, thus making the DS4412 ideal for servers, video-processing cards and other DC/DC power-supply applications.
The DS4412 powers up in a neutral (or zero-current) output condition to minimise system-startup overhead requirements.
To maximise simplicity and versatility, the full-scale output currents are set between 500uA and 2mA using one external resistor for each channel.
Through the I2C bus, the output currents can then be set to any of the 15 linear sink or 15 linear source steps up to the maximum full-scale value.
The DS4412 is fully specified over the -40 to +85C industrial temperature range, and is available in a tiny 8-pin microSOP.
Pricing begins at US $0.45 (10,000-up).
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