AD9634
12-Bit, 170 MSPS/210 MSPS/250 MSPS, 1.8 V Analog-to-Digital Converter
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Overview
Features and Benefits
- SNR = 69.7 dBFS at 185 MHz AIN and 250 MSPS
- SFDR = 87 dBc at 185 MHz AIN and 250 MSPS
- −150.6 dBFS/Hz input noise at 185 MHz, −1 dBFS AIN and 250 MSPS
- Total Power consumption: 360 @ 250 MSPS
- 1.8 V supply voltages
- LVDS (ANSI-644 levels) outputs
- Integer 1-to-8 input clock divider (625 MHz maximum input)
- Sample rates of up to 250 MSPS
- IF sampling frequencies of up to 350 MHz
- Internal ADC voltage reference
- Flexible analog input range 1.4 V p-p to 2.0 V p-p (1.75 V p-p nominal)
- See data sheet for additional features
Product Details
The AD9634 is a 12-bit, analog-to-digital converter (ADC) with sampling speeds of up to 250 MSPS. The AD9634 is designed to support communications applications where low cost, small size, wide bandwidth, and versatility are desired.
The ADC core features a multistage, differential pipelined architecture with integrated output error correction logic. The ADC features wide bandwidth inputs that can support a variety of user-selectable input ranges. An integrated voltage reference eases design considerations. A duty cycle stabilizer (DCS) is provided to compensate for variations in the ADC clock duty cycle, allowing the converter to maintain excellent performance.
The ADC output data are routed directly to the external 12-bit LVDS output port.
Flexible power-down options allow significant power savings, when desired.
Programming for setup and control is accomplished using a 3-wire, SPI-compatible serial interface.
The AD9634 is available in a 32-lead LFCSP and is specified over the industrial temperature range of −40°C to +85°C. This product is protected by a U.S. patent.
PRODUCT HIGHLIGHTS
- Integrated 12-bit, 170 MSPS/210 MSPS/250 MSPS ADC.
- Fast overrange and threshold detect.
- Proprietary differential input maintains excellent SNR performance for input frequencies up to 350 MHz.
- 3-pin, 1.8V SPI port for register programming and readback.
- Pin compatibility with the AD9642, allowing a simple migration up to 14 bits, and with the AD6672.
APPLICATIONS
- Communications
- Diversity radio systems
- Multimode digital receivers (3G)
TD-SCDMA, WiMax, WCDMA, CDMA2000, GSM, EDGE, LTE - I/Q demodulation systems
- Smart antenna systems
- General-purpose software radios
- Ultrasound equipment
- Broadband data applications
Product Categories
Markets and Technologies
Product Lifecycle
Recommended for New Designs
This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.
Evaluation Kits (3)
Documentation & Resources
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AN-905: VisualAnalog™ Converter Evaluation Tool Version 1.0 User Manual8/18/2020
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AN-878: High Speed ADC SPI Control Software (Rev. A)3/20/2018PDF585 kB
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AN-835: Understanding High Speed ADC Testing and Evaluation (Rev. B)5/12/2015PDF985 kB
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AN-282: Fundamentals of Sampled Data Systems2/14/2015PDF2131 kB
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AN-756: Sampled Systems and the Effects of Clock Phase Noise and Jitter (Rev. 0)2/14/2015PDF291K
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AN-827: A Resonant Approach to Interfacing Amplifiers to Switched-Capacitor ADCs (Rev. 0)2/14/2015PDF203 kB
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AN-935: Designing an ADC Transformer-Coupled Front End (Rev. 0)2/14/2015PDF363 kB
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AN-742: Frequency Domain Response of Switched-Capacitor ADCs (Rev. C)2/14/2015PDF427 K
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AN-1142: Techniques for High Speed ADC PCB Layout (Rev. 0)2/2/2012PDF392 kB
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AN-737: How ADIsimADC Models an ADC (Rev. B)11/9/2007PDF373 kB
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AN-807: Multicarrier WCDMA Feasibility (Rev. 0)11/9/2007PDF969 kB
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AN-808: Multicarrier CDMA2000 Feasibility (Rev. 0)11/9/2007PDF1535 kB
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AN-803: Pin Compatible High Speed ADCs Simplify Design Tasks (Rev. 0)11/29/2006PDF356 kB
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UG-386: Evaluating the AD9642/AD9634/AD6672 Analog-to-Digital Converters4/12/2012PDF3293 kB
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AD9634 Quick Start Guide8/10/2011PDF165 kB
Tools & Simulations
Virtual Eval - BETA
Virtual Eval is a web application to assist designers in product evaluation of ADCs, DACs, and other ADI products. Using detailed models on Analog’s servers, Virtual Eval simulates crucial part performance characteristics within seconds. Configure operating conditions such as input tones and external jitter, as well as device features like gain or digital down-conversion. Performance characteristics include noise, distortion, and resolution, FFTs, timing diagrams, response plots, and more.
MathWorks®
Design Tools
Visual Analog
For designers who are selecting or evaluating high speed ADCs, VisualAnalog™ is a software package that combines a powerful set of simulation and data analysis tools with a user-friendly graphical interface.
Product Recommendations
AD9634 Companion Parts
Recommended Clock Drivers
- For low jitter performance: AD9510, AD9511, AD9512, AD9513, AD9514, AD9515.
- For low jitter performance along with on chip PLL and VCO: AD9523, AD9523-1, AD9524.
Recommended Driver Amplifiers
- For DC-coupled inputs: ADA4927-1, ADA4938-1.
- For a fully differential input and output DVGA in digital communications systems: ADL5202, AD8376.
- For differential RF/IF: ADL5562.
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.
Sample & Buy
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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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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.