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
* 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
ESD sensitive device, take proper precaution while handling the device.
