Low Power, 14-Bit, 180 MSPS, Digital-to-Analog
Converter and Waveform Generator
On-chip 4096 × 14-bit pattern memory
Power dissipation @ 3.3 V, 4 mA output
96.54 mW @ 180 MSPS
Sleep mode: <5 mW @ 3.3 V
Supply voltage: 1.8 V to 3.3 V
SFDR to Nyquist
87 dBc @ 10 MHz output
Phase noise @ 1 kHz offset, 180 MSPS, 8 mA: −150 dBc/Hz
Differential current outputs: 8 mA max @ 3.3 V
Small footprint, 32-lead, 5 mm × 5 mm LFCSP with 3.6 mm ×
3.6 mm exposed paddle, and Pb-free package
Signal generators, arbitrary waveform generators
The AD9102 TxDAC® and waveform generator is a high perfor-
mance digital-to-analog converter (DAC) integrating on-chip
pattern memory for complex waveform generation with a direct
digital synthesizer (DDS).
The DDS is a 14-bit output, up to 180 MSPS master clock sine
wave generator with a 24-bit tuning word, allowing 10.8 Hz/LSB
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 lets the user program
the pattern period for the DAC as well the start delay within the
pattern period for the signal output on the DAC .
A SPI interface is used to configure the digital waveform
generator and load patterns into the SRAM.
A gain adjustment factor and an offset adjustment are applied to
the digital signal on their way into the DAC.
The AD9102 offers exceptional ac and dc performance and
supports DAC sampling rates of up to 180 MSPS.
The flexible power supply operating range of 1.8 V to 3.3 V and
low power dissipation of the AD9102 make it well suited for
portable and low power applications.
1. High Integration.
On-chip DDS and 4096 × 14 pattern memory.
2. Low Power.
Power-down mode provides for low power idle periods.
FUNCTIONAL BLOCK DIAGRAM
TIMERS + STATE MACHINE
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