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TMCNet:  ADI introduces quad-channel 12-bit and single-channel 14-bit D/A converters

[December 20, 2012]

ADI introduces quad-channel 12-bit and single-channel 14-bit D/A converters

Dec 20, 2012 (Datamonitor via COMTEX) -- Analog Devices, Inc., or ADI, has introduced the AD9106 quad-channel, 12-bit, and the AD9102 single-channel, 14-bit, 180-MSPS waveform generators, integrating on-chip static random access memory, or SRAM, and direct digital synthesis, or DDS, for complex waveform generation.

ADI's new D/A converters generate the high-speed, high-dynamic-range, multichannel complex waveforms required in applications such as ultrasound transducer excitation, medical instrumentation, portable instrumentation, signal generators and arbitrary waveform generators, the company said.

The on-chip DDS operates up to 180 MHz with a 24-bit tuning word, allowing 10.8-Hz/LSB (least significant bit) frequency resolution and providing a single frequency output for all D/A converters and independent programmable phase-shift outputs for each D/A converter, the company added.

Pattern data can include directly generated SRAM-stored waveforms, DDS outputs amplitude-modulated by SRAM, or DDS frequency tuning words from SRAM providing chirp or frequency shift keying (FSK) modulation. An internal pattern-control state machine allows the user to program the pattern period for all D/A converters, the start delay within the pattern period for the signal output on each D/A converter channel, as well as the repetition rate of the pattern. A serial peripheral interface (SPI) is used to configure the digital waveform generator and load patterns into the SRAM, the company concluded.

AD9106/AD9102 D/A Converters Waveform Generator features; on-chip 4,096-word pattern memory; on-chip DDS with 24-bit tuning word; sleep mode power: < 5 mW @ 3.3 V; supply voltage of 1.8 V to 3.3 V; SFDR to Nyquist of 86 dBc @ 1 MHz output and 85 dBc @ 10 MHz output; -140 dBc/Hz @ 1 kHz offset, 180 MSPS, 8 mA phase noise; and differential current outputs of 8 mA max @ 3.3 V. Republication or redistribution, including by framing or similar means, is expressly prohibited without prior written consent. Datamonitor shall not be liable for errors or delays in the content, or for any actions taken in reliance thereon

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