AD9643 14-Bit, 170/210/250 MSPS, 1.8 V Dual Analog-to-Digital Converter (ADC)

The AD9643 is a dual 14-bit, analog-to-digital converter (ADC) with sampling speeds up to 250 MSPS. The AD9643 is designed to support communications applications where low cost, small size, wide bandwidth and versatility are desired. APPLICATIONS Integrated dual, 14-bit, 170/210/250 MSPS ADC. Operation from a single 1.8V supply and a separate digital output driver supply accommodating LVDS outputs. Proprietary differential input maintains excellent SNR performance for input frequencies up to 300 MHz. SYNC input allows synchronization of multiple devices. 3-pin, 1.8V SPI port for register programming and register readback. Pin compatibility with the AD9613 allowing a simple migration down from 14 bits to 12 bits.

The dual ADC core features a multistage, differential pipelined architecture with integrated output error correction logic. Each ADC features wide bandwidth inputs supporting a variety of user-selectable input ranges. An integrated voltage reference eases design considerations. A duty cycle stabilizer is provided to compensate for variations in the ADC clock duty cycle, allowing the converters to maintain excellent performance.

The ADC output data are routed directly to the two external 14- bit LVDS output ports and formatted either as interleaved or channel multiplexed.

Flexible power-down options allow significant power savings, when desired.

Programming for setup and control are accomplished using a 3- wire SPI-compatible serial interface.

The AD9643 is available in a 64-lead LFCSP and is specified over the industrial temperature range of −40°C to +85°C.

PRODUCT HIGHLIGHTS
  • Integrated dual, 14-bit, 170/210/250 MSPS ADC.
  • Operation from a single 1.8V supply and a separate digital output driver supply accommodating LVDS outputs.
  • Proprietary differential input maintains excellent SNR performance for input frequencies up to 300 MHz.
  • SYNC input allows synchronization of multiple devices.
  • 3-pin, 1.8V SPI port for register programming and register readback.
  • Pin compatibility with the AD9613 allowing a simple migration down from 14 bits to 12 bits.
Features and Benefits
  • SNR = 71.5 dBFS at 185 MHz Ain and 250 MSPS
  • SFDR = 85 dBc at 185 MHz Ain and 250 MSPS
  • -152.0 dBFS/Hz Input Noise @ 200 MHz, -1dBFS Ain and 250MSPS
  • Total Power consumption: 785mW @ 250 MSPS
  • 1.8 V analog and LVDS output supply operation
  • Integer 1-to-8 input clock divider (625 MHz maximum input)
  • Integrated dual-channel ADC
  • See datasheet for additional features
Analog to Digital Converters
AD9643 IBIS Model
Reference Designs
Data Sheets
Documentnote
AD9643: 14-Bit, 170 MSPS/210 MSPS/250 MSPS, 1.8 V Dual Analog-to-Digital Converter (ADC) Data Sheet (Rev. E)PDF 1632 kB
Application Notes
Documentnote
AN-878: High Speed ADC SPI Control Software (Rev. A)PDF 585 kB
AN-905: Visual Analog Converter Evaluation Tool Version 1.0 User Manual (Rev. 0)PDF 2124 kB
AN-835: Understanding High Speed ADC Testing and Evaluation (Rev. B)PDF 985 kB
AN-501: Aperture Uncertainty and ADC System Performance (Rev. A)PDF 227 kB
AN-282: Fundamentals of Sampled Data SystemsPDF 2131 kB
AN-756: Sampled Systems and the Effects of Clock Phase Noise and Jitter (Rev. 0)PDF 291.7 K
AN-827: A Resonant Approach to Interfacing Amplifiers to Switched-Capacitor ADCs (Rev. 0)PDF 203 kB
AN-935: Designing an ADC Transformer-Coupled Front End (Rev. 0)PDF 363 kB
AN-742: Frequency Domain Response of Switched-Capacitor ADCs (Rev. B)PDF 401 kB
AN-345: Grounding for Low-and-High-Frequency CircuitsPDF 455 kB
AN-586: LVDS Outputs for High Speed A/D Converters (Rev. 0)PDF 207 kB
AN-1142: Techniques for High Speed ADC PCB Layout (Rev. 0)PDF 392 kB
AN-737: How ADIsimADC Models an ADC (Rev. B)PDF 373 kB
AN-807: Multicarrier WCDMA Feasibility (Rev. 0)PDF 969 kB
AN-808: Multicarrier CDMA2000 Feasibility (Rev. 0)PDF 1535 kB
AN-877: Interfacing to High Speed ADCs via SPI (Rev. A)PDF 1594 kB
AN-851: A WiMax Double Downconversion IF Sampling Receiver Design (Rev. 0)PDF 262 kB
AN-741: Little Known Characteristics of Phase Noise (Rev. 0)PDF 1679 kB
User Guides
Documentnote
UG-293: Evaluating the AD9643/AD9613/AD6649/AD6643 Analog-to-Digital ConvertersPDF 2740 kB
Technical Books
Documentnote
Order Information
Part NumberPackagePacking QtyTemp RangePrice 100-499Price 1000+RoHS
AD9643BCPZ-170 Production64 ld LFCSP (9x9mm, 6.20mm exposed pad)OTH 260-40 to 85C85.2872.49Y
AD9643BCPZ-210 Production64 ld LFCSP (9x9mm, 6.20mm exposed pad)OTH 260-40 to 85C129.1109.74Y
AD9643BCPZ-250 Production64 ld LFCSP (9x9mm, 6.20mm exposed pad)OTH 260-40 to 85C154.79131.57Y
AD9643BCPZRL7-170 Production64 ld LFCSP (9x9mm, 6.20mm exposed pad)REEL 750-40 to 85C85.2872.49Y
AD9643BCPZRL7-210 Production64 ld LFCSP (9x9mm, 6.20mm exposed pad)REEL 750-40 to 85C129.1109.74Y
AD9643BCPZRL7-250 Production64 ld LFCSP (9x9mm, 6.20mm exposed pad)REEL 750-40 to 85C154.79131.57Y
Evaluation Boards
Part NumberDescriptionPriceRoHS
AD9643-170EBZEvaluation Board300Y
AD9643-210EBZEvaluation Board300Y
AD9643-250EBZEvaluation Board300Y
Reference Materials
AD9643: 14-Bit, 170 MSPS/210 MSPS/250 MSPS, 1.8 V Dual Analog-to-Digital Converter (ADC) Data Sheet (Rev. E) ad9643
AD9643BCPZ (All Speed Grades) ad9643
CN0242 设计和集成文件 adl5202
AN-878: High Speed ADC SPI Control Software (Rev. A) ad6655
AN-905: Visual Analog Converter Evaluation Tool Version 1.0 User Manual (Rev. 0) ad9220
AN-835: Understanding High Speed ADC Testing and Evaluation (Rev. B) ad9220
AN-501: Aperture Uncertainty and ADC System Performance (Rev. A) ad9220
AN-282: Fundamentals of Sampled Data Systems ad1674
AN-756: Sampled Systems and the Effects of Clock Phase Noise and Jitter (Rev. 0) ad9220
AN-827: A Resonant Approach to Interfacing Amplifiers to Switched-Capacitor ADCs (Rev. 0) ad6655
AN-935: Designing an ADC Transformer-Coupled Front End (Rev. 0) ad9220
AN-742: Frequency Domain Response of Switched-Capacitor ADCs (Rev. B) ad7476
AN-345: Grounding for Low-and-High-Frequency Circuits ad9220
AN-586: LVDS Outputs for High Speed A/D Converters (Rev. 0) ad6642
AN-835: 高速ADC测试和评估 (Rev. 0) ad9510
AN-1142: 高速ADC PCB布局布线技巧 (Rev. 0) ad6655
AN-1142: Techniques for High Speed ADC PCB Layout (Rev. 0) ad6655
AN-878: 高速ADC SPI控制软件[中文版] (Rev. A) ad6655
AN-282: 采样数据系统基本原理[中文版] (Rev. A) ad75019
AN-737: 如何用ADIsimADC完成ADC建模 (Rev. B) ad6642
AN-737: How ADIsimADC Models an ADC (Rev. B) ad9220
AN-807: 多载波WCDMA的可行性 (Rev. 0) adf4106
AN-807: Multicarrier WCDMA Feasibility (Rev. 0) ad6655
AN-808: Multicarrier CDMA2000 Feasibility (Rev. 0) ad9863
AN-827: 放大器与开关电容ADC接口的匹配方法[中文版] (Rev. 0) ad8351
AN-877: 通过SPI与高速ADC接口[中文版] (Rev. A) ad9271
AN-877: Interfacing to High Speed ADCs via SPI (Rev. A) ad7091r
AN-905: VisualAnalog™转换器评估工具1.0版用户手册 (Rev. 0) ad6655
AN-935: ADC变压器耦合前端设计[中文版] (Rev. 0) ad6655
AN-586: 高速模数转换器的LVDS数据输出[中文版] (Rev. 0) ad6642
AN-851: 一种WiMax双下变频IF采样接收机设计方案[中文版] (Rev. 0) ad9540
AN-851: A WiMax Double Downconversion IF Sampling Receiver Design (Rev. 0) ad9856
AN-345: 低频和高频电路接地 ad9540
AN-756: 系统采样以及时钟相位噪声和抖动的影响[中文版] (Rev. 0) ad9540
AN-501: 孔径不确定度与ADC系统性能[中文版] (Rev. A) ad9540
AN-741: Little Known Characteristics of Phase Noise (Rev. 0) ad9221
AN-741: 鲜为人知的相位噪声特性 ad9540
UG-293: Evaluating the AD9643/AD9613/AD6649/AD6643 Analog-to-Digital Converters ad6643
MT-230：噪声在高速转换器信号链中的考 虑因素 adl5566
MT-031: 实现数据转换器的接地并解开AGND和DGND的谜团 ad6672
MT-002: 奈奎斯特准则对数据采样系统设计有何意义 ad6672
MT-001: 揭开公式(SNR = 6.02N + 1.76dB)的神秘面纱 ad6672
MT-075: Differential Drivers for High Speed ADCs Overview ad6672
RF Source Booklet adf9010
CN0242:具有带通抗混叠滤波器的高性能、高IF、75 MHz带宽、14位、250 MSPS接收机前端 adl5202
MS-2210：高速ADC的电源设计 ad9861
MS-2124：了解高速ADC的交流特性 ad7915
MS-1779：九项常被忽略的ADC技术规格 ad6672
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