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.
