AD9856

PRODUCTION

CMOS 200 MHz Quadrature Digital Upconverter

Analog Devices AD9856 Product Info

10 February 2026 5

Features

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 SIN(x)/x Compensation Filter

>52 dB SFDR @ 40 MHz A_OUT
+3 V Single Supply Operation
>48 dB SFDR @ 70 MHz A_OUT
>80 dB Narrowband SFDR @ 70 MHz A_OUT
Space-Saving Surface-Mount Packaging
Bidirectional Control Bus Interface

Part details & applications

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.

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