The AD9957BSVZ is a 1GSPS Quadrature Digital Up-converter with 18-bit I/Q data path and 14-bit DAC, functions for communications systems where size, power consumption and dynamic performance are critical. It integrates a high speed direct digital synthesizer (DDS), a high performance high speed 14-bit DAC, clock multiplier circuitry, digital filters and other DSP functions onto a single chip. It provides baseband up conversion for data transmission in a wired or wireless communications system. It offers performance gains in operating speed, power consumption and spectral performance. Unlike its predecessors, it supports a 16-bit serial input mode for I/Q baseband data. The device can alternatively be programmed to operate either as a single tone, sinusoidal source or as an interpolating DAC. The reference clock input circuitry includes a crystal oscillator, a high speed, divide-by-two input and a low noise PLL for multiplication of the reference clock frequency.
- 1GSPS internal clock speed (up to 400MHz analogue output)
- Integrated 1GSPS 14-bit DAC
- 250MSPS Input data rate
- <=-125dBc/Hz Phase noise
- Excellent dynamic performance
- >80dB Narrowband SFDR
- 8 Programmable profiles for shift keying
- Reference clock multiplier
- Internal oscillator for a single crystal operation
- Software and hardware controlled power-down
- Integrated RAM
- Phase modulation capability
- Multichip synchronization
- Easy interface to Blackfin SPORT
- Interpolation factors from 4x to 252x
- Interpolation DAC mode
- Gain control DAC
- Internal divider allows references up to 2GHz
成像, 视频和目视, 计算机和计算机周边, 无线, 通信与网络
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