The AD9857ASTZ is a high speed Direct Digital Synthesizer (DDS) with a high performance, 14-bit digital-to-analog converter (DAC), clock multiplier circuitry, digital filters and other DSP functions onto a single chip, to form a complete quadrature digital upconverter device. The AD9857 is intended to function as a universal I/Q modulator and agile upconverter, single-tone DDS or interpolating DAC for communications applications, where power dissipation and dynamic performance are critical attributes.
● 200MHz Internal clock rate
● 14-bit Data path
● Excellent dynamic performance - 80dB SFDR at 65MHz (±100kHz) AOUT
● 4x to 20x Programmable reference clock multiplier
● Reference clock multiplier PLL lock detect indicator
● Internal 32-bit quadrature DDS
● FSK capability
● 8-bit Output amplitude control
● Single-pin power-down function
● Four programmable, pin-selectable signal profiles
● SIN(x)/x correction (inverse SINC function)
● Simplified control interface
● 10MHz serial, 2-wire or 3-wire SPI®-compatible
● Single-ended or differential input reference clock
● Three modes of operation - Quadrature modulator mode, Single-tone mode, Interpolating DAC mode
