AD9952 Datasheet | Analog Devices

FEATURES 400 MSPS internal clock speed Integrated 14-bit DAC 32-bit tuning word Phase noise ≤ - 120 d Bc/Hz @ 1 k Hz offset (DAC output) Excellent dynamic performance >80 d B SFDR @ 160 MHz (±100 k Hz offset) AOUT Serial I/O control 1.8 V power supply Software and hardware controlled power-down 48-lead TQFP_EP package Support for 5 V input levels on most digital inputs PLL REFCLK multiplier (4× to 20×) Internal oscillator, can be driven by a single crystal Phase modulation capability Multichip synchronization High speed parator (200 MHz toggle rate) APPLICATIONS Agile LO frequency synthesis Programmable clock generators Test and measurement equipment Acousto-optic device drivers GENERAL DESCRIPTION The AD9952 is a direct digital synthesizer (DDS) featuring a 14-bit DAC (digital-to-analog converter) and operating up to 400 MSPS. The AD9952 uses advanced DDS technology, coupled with an internal high speed, high performance DAC to form a digitally programmable, plete high frequency synthesizer capable of generating a frequency-agile analog output sinusoidal waveform at up to 200 MHz. The AD9952 is designed to provide fast frequency hopping and fine tuning resolution (32-bit frequency tuning word). The frequency tuning and control words are loaded into the AD9952 via a serial I/O port. The AD9952 is specified to operate over the extended industrial temperature range of - 40°C to +105°C. FUNCTIONAL BLOCK DIAGRAM DDS CORE PHASE ACCUMULATOR Z- 1 32 PHASE OFFSET COS(X) 14 DAC SYSTEM CLOCK Z- 1 DAC_RSET IOUT IOUT 32 14 I/O UPDATE SYNC_CLK REFCLK REFCLK 0 M U X SYNC OSCILLATOR/BUFFER ENABLE 4× TO 20× CLOCK MULTIPLIER TIMING AND CONTROL LOGIC ÷ 4 CONTROL REGISTERS M U SYSTEM X CLOCK SYNC_IN OSK PWRDWNCTL PARATOR P_IN P_IN P_OUT FREQUENCY TUNING WORD DDS CLOCK CLEAR PHASE ACCUMULATOR AMPLITUDE SCALE FACTOR 03358-001 CRYSTAL...