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Analog Devices' quad 12-bit and single 14-bit, 180-MSPS D/A converters integrate complex waveform generation function
Analog Devices 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 (SRAM) and direct digital synthesis (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.
- Get support at ADI’s EngineerZone™ online technical support community
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. 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.
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: 1.8 V to 3.3 V
- SFDR to Nyquist:
- 86 dBc @ 1 MHz output
- 85 dBc @ 10 MHz output
- Phase noise: −140 dBc/Hz @ 1 kHz offset, 180 MSPS, 8 mA
- Differential current outputs: 8 mA max @ 3.3 V
Availability and Complementary Products
| Product | Availability | Resolution (Bits) | Channels | Sample Rate (MSPS) | Packaging |
| AD9106 | Now | 12 | 4 | 180 | 32-lead 5x5mm LFCSP |
| AD9102 | Now | 14 | 1 | 180 | 32-lead 5x5mm LFCSP |
Complementary ADI components include the ADA4817 low noise, low distortion op amp, the AD8129 low noise differential amp and the AD9514 low jitter clock distribution IC.
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For more information, or details on the full range of Analog Devices products available from Anglia, please email info@anglia.com
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This news article was originally published in October 2013.
