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AD9122: Dual, 16-Bit, 1230 MSPS, TxDAC+® Digital-to-Analog Converter Data Sheet (Rev. B)9/28/2015PDF1282 kB
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AD9122-EP: Enhanced Product Data Sheet (Rev. 0)9/28/2015PDF225 K
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AD9122-DSCC: Military Data Sheet9/28/2015
Overview
Features and Benefits
- Flexible LVDS interface allows word, byte, or nibble load
- Single-carrier W-CDMA ACLR = 82 dBc @ 122.88 MHz IF
- Analog output: adjustable 8.7 mA to 31.7 mA, RL = 25 Ω to 50 Ω
- Integrated 2×/4×/8× interpolator/complex modulator allows
carrier placement anywhere in the DAC bandwidth - Gain, dc offset, and phase adjustment for sideband suppression
- Multiple chip synchronization interfaces
- High performance, low noise PLL clock multiplier
- Digital inverse sinc filter
- Low power: 1.5 W at 1.2 GSPS, 800 mW at 500 MSPS, full operating conditions
- 72-lead, exposed paddle LFCSP
- Download AD9122-EP data sheet (pdf)
- Military temperature range (such as −55°C to +105°C)
- Controlled manufacturing baseline
- One assembly/test site
- One fabrication site
- Enhanced product change notification
- Qualification data available on request
- V62/12654 DSCC Drawing Number
Product Details
The AD9122 is a dual 16-bit, high dynamic range, digital-to-analog converter (DAC) that provides a sample rate of 1230 MSPS, permitting a multicarrier generation up to the Nyquist frequency. It includes features optimized for direct conversion transmit applications, including complex digital modulation, and gain and offset compensation. The DAC outputs are optimized to interface seamlessly with analog quadrature modulators, such as the ADL537x F-MOD series from Analog Devices, Inc. A 4-wire serial port interface provides for programming/readback of many internal parameters. Full-scale output current can be programmed over a range of 8.7 mA to 31.7 mA. The AD9122 comes in a 72-lead LFCSP.
The AD9122-EP supports defense and aerospace applications (AQEC).
PRODUCT HIGHLIGHTS
- Ultralow noise and intermodulation distortion (IMD) enable high quality synthesis of wideband signals from baseband to high intermediate frequencies.
- A proprietary DAC output switching technique enhances dynamic performance.
- The current outputs are easily configured for various single-ended or differential circuit topologies.
- Flexible LVDS digital interface allows the standard 32-wire bus to be reduced to ½ or ¼ of the width.
APPLICATIONS
- Wireless infrastructure
- W-CDMA, CDMA2000, TD-SCDMA, WiMAX, GSM, LTE
- Digital high or low IF synthesis
- Transmit diversity
- Wideband communications: LMDS/MMDS, point-to-point
Product Categories
Markets and Technologies
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 (4)
Documentation & Resources
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AN-1100: Wireless Transmitter IQ Balance and Sideband Suppression (Rev. 0)12/21/2010PDF185 kB
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AN-1093: Synchronization of Multiple AD9122 TxDAC+ Converters (Rev. 0)10/14/2010PDF208 kB
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AD9121/AD9122/AD9125 Evaluation Board Documentation8/1/2022WIKI
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Differential Interfaces Improve Performance in RF Transceiver Designs7/1/2011 Analog Dialogue
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Semiconductors Simplify Direct-Conversion Design3/18/2010
Software & Systems Requirements
Tools & Simulations
IBIS Models
Design Tools
ADIsimRF is an easy-to-use RF signal chain calculator. Cascaded gain, noise, distortion and power consumption can be calculated, plotted and exported for signal chains with up to 50 stages. ADIsimRF also includes an extensive data base of device models for ADI’s RF and mixed signal components.
Reference Designs (2)
Product Recommendations
AD9122 Companion Parts
Recommended Quadrature Modulators
- For an IQ modulator with integrated PLL and VCO: ADRF6701, ADRF6702, ADRF6703, ADRF6704.
- For 3V power supplies: AD8345, AD8346, AD8349.
- In wideband communication systems: ADL5370, ADL5371, ADL5372, ADL5373, ADL5374, ADL5375, ADL5385, ADL5386.
Recommended Clock Drivers
Design Resources
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.
PCN-PDN Information
Support & Discussions
AD9122 Discussions
Sample & Buy
Ordering FAQs
See our Ordering FAQs for answers to questions about online orders, payment options and more.
Buy Now Pricing
(**) Displayed Buy Now Price and Price Range is based on small quantity orders.
List Pricing
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Lead Times
Please see the latest communication from our CCO regarding lead times.
Sampling
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Evaluation Boards
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Up to two boards can be purchased through Analog.com. To order more than two, please purchase through one of our listed distributors.
Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.