AD9852ASVZ

GENERAL DESCRIPTION

The AD9852 digital synthesizer is a highly integrated device that uses advanced DDS technology, coupled with an internal high speed, high performance D/A converter to form a digitally programmable, agile synthesizer function. When referenced to an accurate clock source, the AD9852 generates a highly stable frequency-, phase-, and amplitude-programmable cosine output that can be used as an agile LO in communications, radar, and many other applications. The innovative high speed DDS core of the AD9852 provides 48-bit frequency resolution (1 μHz tuning resolution with 300 MHz SYSCLK). Retaining 16 bits for phase-to-amplitude conversion ensures excellent spurious-free dynamic range (SFDR).

FEATURES

300 MHz internal clock rate
FSK, BPSK, PSK, chirp, AM operation
Dual integrated 12-bit D/A converters
Ultrahigh speed comparator, 3 ps rms jitter
Excellent dynamic performance
80 dB SFDR at 100 MHz (±1 MHz) AOUT
4× to 20× programmable reference clock multiplier
Dual 48-bit programmable frequency registers
Dual 14-bit programmable phase offset registers
12-bit programmable amplitude modulation and on/off
output shaped keying function
Single-pin FSK and BPSK data interfaces
PSK capability via I/O interface
Linear or nonlinear FM chirp functions with single pin
frequency hold function
Frequency ramped FSK
<25 ps rms total jitter in clock generator mode
Automatic bidirectional frequency sweeping
Sin(x)/x correction
Simplified control interface
10 MHz serial 2-wire or 3-wire SPI-compatible
100 MHz parallel 8-bit programming
3.3 V single supply
Multiple power-down functions
Single-ended or differential input reference clock
Small, 80-lead LQFP or TQFP with exposed pad

APPLICATIONS

Agile LO frequency synthesis
Programmable clock generator
FM chirp source for radar and scanning systems
Test and measurement equipment
Commercial and amateur RF exciter