AD9445 14-Bit, 105 MSPS / 125 MSPS A/D Converter

High performance: Outstanding SFDR performance for multicarrier, multimode 3G and 4G cellular base station receivers. Ease of use: On-chip reference and track-and-hold. An output clock simplifies data capture. Packaged in a Pb-free, 100-lead TQFP/EP. Clock duty cycle stabilizer (DCS) maintains overall ADC performance over a wide range of clock pulse widths. OR (out-of-range) outputs indicate when the signal is beyond the selected input range.

The AD9445 is a 14-bit monolithic, sampling analog-to-digital converter (ADC) with an on-chip, IF sampling track-and-hold circuit and is optimized for power, small size, and ease of use. The product operates at up to an 105 MSPS conversion rate and is optimized for multi-carrier, multimode receivers, such as those found in cellular infrastructure equipment.

The ADC requires 3.3 V and 5.0 V power supplies and a low voltage differential input clock for full performance operation. No external reference or driver components are required for many applications. Data outputs are LVDS-compatible (ANSI-644) or CMOS-compatible and include the means to reduce the overall current needed for short trace distances.

Optional features allow users to implement various selectable operating conditions, including data format select and output data mode.

The AD9445 is available in a 100-lead surface-mount plastic package (100-lead TQFP/EP) specified over the industrial temperature range (−40°C to +85°C).

Product Highlights

Applications
  • Multi-carrier, multimode cellular receivers
  • Antenna array positioning
  • Power amplifier linearization
  • Broadband wireless
  • Radar, infrared imaging
  • Medical Imaging
  • Communications instrumentation
Features and Benefits
  • 125 MSPS guaranteed sampling rate (AD9445BSV-125)
  • 100 dB two-tone SFDR with 30 MHz and 
    31 MHz
  • 73.5 dB SNR with 70 MHz input
  • 85 dBc SFDR with 225 MHz input
  • Excellent linearity 
    DNL = ±0.25 LSB typical 
    INL = ±0.8 LSB typical
  • 2.3 W power dissipation
  • 3.3 V and 5 V supply operation
  • 2.0 V p-p to 3.2 V p-p differential full-scale input
  • LVDS outputs (ANSI-644 compatible) or CMOS outputs
  • Data format select (Offset Binary or 2’s compliment)
  • Output clock available
Analog to Digital Converters
AD9445 IBIS Models
Data Sheets
Documentnote
AD9445: 14-Bit, 105/125 MSPS, IF Sampling ADC Data Sheet (Rev. 0)PDF 965 kB
Application Notes
Documentnote
AN-1408: Using the AD8376 VGA to Drive Wide Bandwidth ADCs for High IF AC-Coupled Applications (Rev. B)PDF 140.09 K
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-935: Designing an ADC Transformer-Coupled Front End (Rev. 0)PDF 363 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-1204: Using the ADL5562 Differential Amplifier to Drive Wide Bandwidth ADCs (Rev. A)PDF 164 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-715: A First Approach to IBIS Models: What They Are and How They Are Generated (Rev. 0)PDF 370.2 K
AN-741: Little Known Characteristics of Phase Noise (Rev. 0)PDF 1679 kB
Order Information
Part NumberPackagePacking QtyTemp RangePrice 100-499Price 1000+RoHS
AD9445BSVZ-105 Production100 ld TQFP w/ 9.5mm exposed padOTH 90-40 to 85C48.8241.49Y
AD9445BSVZ-125 Production100 ld TQFP w/ 9.5mm exposed padOTH 90-40 to 85C65.4855.66Y
Reference Materials
AD9445: 14-Bit, 105/125 MSPS, IF Sampling ADC Data Sheet (Rev. 0) ad9445
AD9445BSVZ (Valid for both the -105 and -125 speed grades, supporting both LVDS and CMOS output modes) ad9445
AN-1408: Using the AD8376 VGA to Drive Wide Bandwidth ADCs for High IF AC-Coupled Applications (Rev. B) ad8376
AN-808: CDMA2000多载波系统可行性研究 (Rev. 0) adl5330
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-935: Designing an ADC Transformer-Coupled Front End (Rev. 0) ad9220
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-1204: 使用差分放大器ADL5562驱动高IF交流耦合应用中的宽带宽ADC (Rev. A) adl5562
AN-1204: Using the ADL5562 Differential Amplifier to Drive Wide Bandwidth ADCs (Rev. A) adl5562
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-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-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-715: 走近IBIS模型：什么是IBIS模型？它们是如何生成的？ (Rev. 0) ad6655
AN-715: A First Approach to IBIS Models: What They Are and How They Are Generated (Rev. 0) ad9220
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
向应用工程师提问—36 宽带A/D 转换器的前端设计考虑因素II: 用放大器还是变压器来驱动ADC？ ad8350
CN-0110 adl5562
CN-0046: Using the AD8352 as an Ultralow Distortion Differential RF/IF Front... ad8352
MS-2210：高速ADC的电源设计 ad9861
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