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D/A converters dissipate 220mW at their maximum sample rate

Norwood, Mass.—Aimed at communications, industrial and instrumentation equipment, Analog Devices Inc. has introduced eight TxDAC transmit D/A converters, each integrating two D/A converters on a single device.

Dissipating 220 mW at their maximum sample rate, the AD911x series of dual TxDAC devices consume 40 percent less power and are one-third the size of competing transmit D/A converters, while achieving 10 dB better SFDR (spurious-free dynamic range) performance, according to ADI. The AD971x series of dual TxDAC devices, with 2-mA full-scale output current consume 70 percent less power than competing products, ADI added.

Each TxDAC integrates two 14-, 12-, 10- or 8-bit D/A converters with sample rates up to 125 MSPS. These devices allow designers to adjust the full-scale current from 1 to 4 mA or 4 to 20 mA with a single, pin-compatible architecture and common software code.

The AD971x TxDAC series features 1- to 4-mA maximum differential output current. Power dissipation at 2 mA output current is 37 mW at 10 MSPS and 53 mW at 50 MSPS.

The AD911x TxDAC series has 4- to 20-mA maximum differential output current. The AD911x devices achieve 85-dB SFDR to 10 MHz.

The devices come in a small, 6 mm – 6 mm, Pb-free, 40-lead LFCSP.

Pricing: Ranges from $5.95 to $9.50 each in 1K unit quantities.
Availability: Volume production.
For more information: Click here.

Analog Devices, www.analog.com

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