AD9856AST

CMOS 200 MHz的正交数字上变频器 CMOS 200 MHz Quadrature Digital Upconverter

Product Details

The AD9856 integrates a high-speed direct-digital synthesizer DDS, a high-performance, high-speed 12-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 AD9856 is primarily intended to function as a universal upstream and downstream I/Q modulator for interactive HFC cable network applications, where cost, size, power dissipation, and dynamic performance are critical attributes.

### Features and Benefits

.

Universal Low Cost Modulator Solution for Communications Applications

.

DC to 80 MHz Output Bandwidth

.

Integrated 12-Bit D/A Converter

.

Programmable Sample Rate Interpolation Filter

.

Programmable Reference Clock Multiplier

.

Internal SINx/x Compensation Filter

|

.

>52 dB SFDR @ 40 MHz AOUT

.

+3 V Single Supply Operation

.

>48 dB SFDR @ 70 MHz AOUT

.

>80 dB Narrowband SFDR @ 70 MHz AOUT

.

Space-Saving Surface-Mount Packaging

.

Bidirectional Control Bus Interface

---|---