AD9106

Data Sheet Quad, Low Power, 12-Bit, 180 MSPS, Digital-toAnalog Converter and Waveform Generator AD9106 FEATURES Highly integrated quad DAC On-chip 4096 × 12-bit pattern memory On-chip DDS Power dissipation at 3.3 V, 4 mA output typical 315.25 mW at 180 MSPS Power-down mode: <5 mW at 3.3 V Supply voltage: 1.8 V to 3.3 V SFDR to Nyquist: 86 dBc at 10 MHz output Phase noise at 1 kHz offset, 180 MSPS, 4 mA: −140 dBc/Hz Differential full-scale current outputs: 8 mA maximum at 3.3 V Small footprint, 5 mm × 5 mm with 3.5 mm × 3.6 mm exposed paddle, 32-lead LFCSP RoHS compliant package APPLICATIONS Medical instrumentation Ultrasound transducer excitation Portable instrumentation Signal generators, arbitrary waveform generators GENERAL DESCRIPTION The AD9106 TxDAC® and waveform generator is a high performance, quad digital-to-analog converter (DAC) integrating on-chip pattern memory for complex waveform generation with a direct digital synthesizer (DDS). The DDS is a 12-bit output, up to 180 MHz master clock sinewave generator with a 24-bit tuning word allowing 10.8 Hz/LSB frequency resolution. The DDS has a single frequency output for all four DACs and independent programmable phase shift outputs for each of the four DACs. SRAM data can include directly generated stored waveforms, amplitude modulation patterns applied to DDS outputs, or DDS frequency tuning words. An internal pattern control state machine allows the user to program the pattern period for all four DACs as well as t...