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
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.
The AD9857 offers enhanced performance over the industry-standard AD9856, as well as providing additional features.
The AD9857 is available in a space-saving, surface-mount package and is specified to operate over the extended industrial temperature range of −40°C to +85°C.
- HFC data, telephony, and video modems
- Wireless base station
- Agile, LO frequency synthesis
- Broadband communications
Product Lifecycle Production
At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
Evaluation Kits (1)
Please be aware that this product is not compatible with current Microsoft operating systems. In addition, the interface cable between computer and the evaluation board requires a parallel printer cable not available on newer computers. For new designs, the AD9957 should be considered.
Documentation & Resources
AN-924: Digital Quadrature Modulator Gain11/20/2020
AN-837: DDS-Based Clock Jitter Performance vs. DAC Reconstruction Filter Performance (Rev. 0)2/14/2015
AN-237: Choosing DACs for Direct Digital Synthesis2/14/2015
AN-823: Direct Digital Synthesizers in Clocking Applications Time (Rev. 0)2/14/2015
AN-0996: The Advantages of Using a Quadrature Digital Upconverter (QDUC) in Point-to-Point Microwave Transmit Systems (Rev. 0)3/25/2009
AN-922: Digital Pulse-Shaping Filter Basics (Rev. 0)2/5/2008
AN-851: A WiMax Double Downconversion IF Sampling Receiver Design (Rev. 0)7/26/2006
Improved DDS Devices Enable Advanced Comm Systems9/1/2006
The Year of the Waveform Generator12/1/2005
DDS Simplifies Polar Modulation8/5/2004
Speedy A/Ds Demand Stable Clocks3/22/2004
Digital Upconverter IC Tames Complex Modulation8/1/2000
Basics of Designing a Digital Radio Receiver (Radio 101)3/6/1998
Tools & Simulations
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal.View our quality and reliability program and certifications for more information.
|Part Number||Material Declaration||Reliability Data||Pin/Package Drawing||CAD Symbols, Footprints & 3D Models|
|AD9857ASTZ||Material Declaration||Reliability Data||80-Lead LQFP (14mm x 14mm)|
|Wafer Fabrication Data|
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Sample & Buy
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Buy Now Pricing
(**) Displayed Buy Now Price and Price Range is based on small quantity orders.
(*)The 1Ku 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. authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.
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