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AD9445: 14-Bit, 105/125 MSPS, IF Sampling ADC Data Sheet (Rev. 0)10/1/2005PDF965 kB
Overview
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 VP-P to 3.2 VP-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
Product Details
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
- 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.
APPLICATIONS
- Multi-carrier, multimode cellular receivers
- Antenna array positioning
- Power amplifier linearization
- Broadband wireless
- Radar, infrared imaging
- Medical Imaging
- Communications instrumentation
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.
Documentation & Resources
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AN-905: VisualAnalog™ Converter Evaluation Tool Version 1.0 User Manual8/18/2020
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AN-1408: Using the AD8376 VGA to Drive Wide Bandwidth ADCs for High IF AC-Coupled Applications (Rev. B)7/22/2016PDF140 K
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AN-835: Understanding High Speed ADC Testing and Evaluation (Rev. B)5/12/2015PDF985 kB
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AN-501: Aperture Uncertainty and ADC System Performance (Rev. A)2/14/2015PDF227 K
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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-935: Designing an ADC Transformer-Coupled Front End (Rev. 0)2/14/2015PDF363 kB
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AN-345: Grounding for Low-and-High-Frequency Circuits2/14/2015PDF455 kB
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AN-586: LVDS Outputs for High Speed A/D Converters (Rev. 0)2/14/2015PDF207 kB
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AN-1204: Using the ADL5562 Differential Amplifier to Drive Wide Bandwidth ADCs (Rev. A)5/8/2013PDF164 kB
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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-715: A First Approach to IBIS Models: What They Are and How They Are Generated (Rev. 0)12/14/2004PDF370K
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AN-741: Little Known Characteristics of Phase Noise (Rev. 0)11/29/2004PDF1679 kB
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Designing Power Supplies for High Speed ADC2/1/2012
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"Rules of the Road" for High-Speed Differential ADC Drivers5/1/2009 Analog Dialogue
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Ask The Application Engineer—36: Wideband A/D Converter Front-End Design Considerations II: Amplifier-or Transformer Drive for the ADC?2/1/2007 Analog Dialogue
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Wideband A/D Converter Front-End Design Considerations: When to Use a Double Transformer Configuration7/1/2006 Analog Dialogue
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ADC Input Noise: The Good, The Bad, and The Ugly. Is No Noise Good Noise?2/1/2006 Analog Dialogue
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Which ADC Architecture Is Right for Your Application?6/1/2005 Analog Dialogue
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Keeping Common Modes Common4/1/2009
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.
IBIS Models
AD9445 IBIS Models
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.
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
Sample & Buy
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Sampling
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