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CMOS 200 MSPS 14-Bit Quadrature Digital Upconverter
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Features and Benefits
- 200 MHz internal clock rate
- 14-bit data path
- Excellent dynamic performance: 80 dB SFDR @ 65 MHz (±100 kHz) AOUT
- 4× to 20× 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 10 MHz serial, 2-wire or 3-wire SPI®-compatible
Product Details
The AD9857 integrates a high-speed direct-digital synthesizer (DDS), a high-performance, high-speed 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 cost, size, power dissipation, and dynamic performance are critical attributes.
