AD9954: 400 MSPS, 14-Bit, 1.8 V CMOS, Direct Digital Synthesizer
The AD9954 is a direct digital synthesizer (DDS) that uses advanced technology, coupled with an internal high speed, high performance DAC to form a complete, digitally programmable, high frequency synthesizer capable of generating a frequency-agile analog output sinusoidal waveform at up to 160 MHz. The AD9954 enables fast frequency hopping coupled with fine tuning of both frequency (0.01 Hz or better) and phase (0.022° granularity).
The AD9954 is programmed via a high speed serial I/O port. The device includes static RAM to support flexible frequency sweep capability in several modes, plus a user-defined linear sweep mode of operation. Also included is an on-chip high speed comparator for applications requiring a square wave output. An on-chip oscillator and PLL circuitry provide users with multiple approaches to generate the device’s system clock.
The AD9954 is specified to operate over the extended industrial temperature range.
产品应用领域 Applications
- Agile LO frequency synthesis
- Programmable clock generators
- FM chirp source for radar and scanning systems
- Automotive radars
- Test and measurement equipment
- Acousto-optic device drivers
AD9954 特点
- 400 MSPS internal clock speed
- Integrated 14-bit DAC
- Programmable phase/amplitude dithering
- 32-bit frequency tuning accuracy
- 14-bit phase tuning accuracy
- Excellent dynamic performance >80 dB narrowband SFDR
- Phase noise better than –120 dBc/Hz
- Serial I/O control
- Ultrahigh speed analog comparator
- Automatic linear and nonlinear frequency sweeping
- 4 frequency/phase offset profiles
- 1.8 V power supply
AD9954 功能框图
| 产品型号 | 产品状态 | 封装 | 引脚 | 温度范围 |
|---|---|---|---|---|
| AD9954/PCBZ | 量产 | 评估板 | - | 工业 |
| AD9954YSV | 量产 | 48 ld TQFP-EP (3.5mm exposed pad) | 48 | 工业 |
| AD9954YSVZ | 量产 | 48 ld TQFP-EP (3.5mm exposed pad) | 48 | 工业 |
| AD9954YSVZ-REEL7 | 量产 | 48 ld TQFP-EP (3.5mm exposed pad) | 48 | 工业 |