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.

Part#	Master fclk	Resolution (Bits)	SNR (dB)	Nominal Supply (V)	I Supply total (max)	FS Iout (mA nom)	Compliance Range (V)	REFCLK Multiplier	I/O Interface	Price* (1000-4999)	Function	Product Description
AD9856	200MHz	12	n/a	Single(+3)	530mA	10	1.5	Yes	Parallel	$15.47	DDS, Modulator, Quadrature Dig Upconv	CMOS, 12-Bit, 200 MHz, Quadrature Digital Upconverter
AD9857	200MHz	14	n/a	Single(+3.3)	615mA	20	1	Yes	Serial	$15.58	DDS, Modulator, Quadrature Dig Upconv	CMOS, 200 MSPS, 14-Bit Quadrature Digital Upconverter
AD9957	1000MHz	14	-	Multi(+1.8, +3.3)	759mA	20	0.5	Yes	Serial	$21.25	Modulator, Quadrature Dig Upconv	1 GSPS Quadrature Digital Upconverter with 18-Bit IQ Data Path and 14-Bit DAC

* The pricing listed here is provided only for budgetary purposes as recommended list price in U.S. Dollars in the United States ex factor per unit for the stated volume. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.
** Pricing is currently unavailable. Click on the product number to see the Product Page for additional information.

The model number is a specific version of a generic that can be purchased or sampled.

Status indicates the current lifecycle of the product. This can be one of 4 stages:

• Pre-Release: The model has not been released to general production, but samples may be available.
• Production: The model is currently being produced, and generally available for purchase and sampling.
• Last Time Buy: The model has been scheduled for obsolescence, but may still be purchased for a limited time.
• Obsolete: The specific part is obsolete and no longer available. Other models listed in the table may still be available (if they have a status that is not obsolete).

The package for this IC (i.e. DIP, SOIC, BGA). An Evaluation Board is a board engineered to show the performance of the model, the part is included on the board.

For detailed drawings and chemical composition please consult our  Package Site

Pin Count is the number of pins, balls, or pads on the device. Pin-out diagrams & pin function descriptions may be found in the datasheet.

This is the acceptable operating range of the device. The various ranges specified are as follows:

• Commercial: 0 to +70 degrees Celsius
• Military : -55 to +125 degrees Celsius
• Industrial: Temperature ranges may vary by model. Please consult the datasheet for more information.
• Automotive: -40 to +125 degrees Celsius

The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.

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