AD9106 Quad, Low Power, 12-Bit, 180 MSPS, Digital-to-Analog Converter and Waveform Generator

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 the start delay within the pattern period for the signal output on each DAC channel. An SPI interface is used to configure the digital waveform generator and load patterns into the SRAM. There are gain adjustment factors and offset adjustments applied to the digital signals on their way into the four DACs. The AD9106 offers exceptional ac and dc performance and supports DAC sampling rates up to 180 MSPS. The flexible power supply operating range of 1.8 V to 3.3 V and low power dissipation of the AD9106 make it well suited for portable and low power applications. APPLICATIONS Medical instrumentation Ultrasound transducer excitation Portable instrumentation Signal generators, arbitrary waveform generators

The AD9106 TxDAC® and waveform generator is a high performance 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.

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 the start delay within the pattern period for the signal output on each DAC channel.

An SPI interface is used to configure the digital waveform generator and load patterns into the SRAM.

There are gain adjustment factors and offset adjustments applied to the digital signals on their way into the four DACs.

The AD9106 offers exceptional ac and dc performance and supports DAC sampling rates up to 180 MSPS. The flexible power supply operating range of 1.8 V to 3.3 V and low power dissipation of the AD9106 make it well suited for portable and low power applications.

Features and Benefits

Highly integrated quad DAC
On-chip 4096 × 12-bit pattern memory
On-chip DDS
Power dissipation at 3.3 V,
4 mA output
315 mW 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 × 3.5 mm exposed paddle LFCSP
Pb-free package

Data Sheets

Document	note
AD9106: Quad, Low Power, 12-Bit, 180 MSPS, Digital-to-Analog Converter and Waveform Generator Data Sheet (Rev. A)	PDF 1456 kB

Order Information

Part Number	Package	Packing Qty	Temp Range	Price 100-499	Price 1000+	RoHS
AD9106BCPZ Production	32 ld LFCSP (5x5x.75mm) w/3.6exposed pad	OTH 490	-40 to 85C	17.65	15	Y
AD9106BCPZRL7 Production	32 ld LFCSP (5x5x.75mm) w/3.6exposed pad	REEL 1500	-40 to 85C	0	15	Y