GENERAL DESCRIPTION

The AD9106 TxDAC® and waveform generator is a high perform ance quad 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.

FEATURES

Highly integrated quad DAC

On-chip 4096 × 12-bit pattern memory

On-chip DDS

Power dissipation at 3.3 V, 4 mA output

  315mW at 180 MSPS

Sleep mode: < 5 mW at 3.3 V

Supply voltage: 1.8 V to 3.3 V

SFDR to Nyquist

  86 dBc at 1 MHz output

  85 dBc at 10 MHz output

Phase noise at 1 kHz offset, 180 MSPS, 8 mA: −140 dBc/Hz

Differential current outputs: 8 mA maximum at 3.3 V

Small footprint 32-lead, 5 mm × 5 mm with 3.5 mm ×

  3.6 mm exposed paddle LFCSP

Pb-free package

APPLICATIONS

Medical instrumentation

  Ultrasound transducer excitation

Portable instrumentation

  Signal generators, arbitrary waveform generators