Overview
Features and Benefits
- 1.8 V analog supply operation
- 1.8 V to 3.3 V output supply
- SNR = 71.8 dBc (72.8 dBFS) to 70 MHz input
- SFDR = 84 dBc to 70 MHz input
- Low power: 430 mW @ 150 MSPS
- Differential input with 650 MHz bandwidth
- On-chip voltage reference and sample-and-hold amplifier
- DNL = ±0.4 LSB
- Flexible analog input: 1 V p-p to 2 V p-p range
- Offset binary, Gray code, or twos complement data format
- Clock duty cycle stabilizer
- Data output clock
- Serial port control
- Built-in selectable digital test pattern generation
- Programmable clock and data alignment
Product Details
The AD9254 is a monolithic, single 1.8 V supply, 14-bit, 150 MSPS analog-to-digital converter (ADC), featuring a high performance sample-and-hold amplifier (SHA) and on-chip voltage reference. The product uses a multistage differential pipeline architecture with output error correction logic to provide 14-bit accuracy at 150 MSPS data rates and guarantees no missing codes over the full operating temperature range.
The wide bandwidth, truly differential SHA allows a variety of user-selectable input ranges and offsets, including single-ended applications. It is suitable for multiplexed systems that switch full-scale voltage levels in successive channels and for sampling single-channel inputs at frequencies well beyond the Nyquist rate. Combined with power and cost savings over previously available ADCs, the AD9254 is suitable for applications in communications, imaging, and medical ultrasound.
A differential clock input controls all internal conversion cycles. A duty cycle stabilizer (DCS) compensates for wide variations in the clock duty cycle while maintaining excellent overall ADC performance.
The digital output data is presented in offset binary, Gray code, or twos complement formats. A data output clock (DCO) is provided to ensure proper latch timing with receiving logic.
The AD9254 is available in a 48-lead LFCSP_VQ and is specified over the industrial temperature range (−40°C to +85°C).
Product Highlights
- The AD9254 operates from a single 1.8 V power supply and features a separate digital output driver supply to accommodate 1.8 V to 3.3 V logic families.
- The patented SHA input maintains excellent performance for input frequencies up to 225 MHz.
- The clock DCS maintains overall ADC performance over a wide range of clock pulse widths.
- A standard serial port interface supports various product features and functions, such as data formatting (offset binary, twos complement, or Gray coding), enabling the clock DCS, power-down, and voltage reference mode.
- The AD9254 is pin-compatible with the AD9233, allowing a simple migration from 12 bits to 14 bits.
APPLICATIONS
- Ultrasound equipment
- IF sampling in communications receivers
- CDMA2000, WCDMA, TD-SCDMA, and WiMax
- Battery-powered instruments
- Hand-held scopemeters
- Low cost digital oscilloscopes
- Macro, micro, and pico cell infrastructure
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 (1)
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)3/20/2018
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AN-1508: Driving the AD9233, AD9246, and AD9254 ADCs in AC-Coupled Baseband Applications (Rev. B)11/17/2017
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AN-835: Understanding High Speed ADC Testing and Evaluation (Rev. B)5/12/2015
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AN-501: Aperture Uncertainty and ADC System Performance (Rev. A)2/14/2015
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AN-282: Fundamentals of Sampled Data Systems2/14/2015
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AN-756: Sampled Systems and the Effects of Clock Phase Noise and Jitter (Rev. 0)2/14/2015
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AN-827: A Resonant Approach to Interfacing Amplifiers to Switched-Capacitor ADCs (Rev. 0)2/14/2015
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AN-742: Frequency Domain Response of Switched-Capacitor ADCs (Rev. C)2/14/2015
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AN-1142: Techniques for High Speed ADC PCB Layout (Rev. 0)2/2/2012
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AN-737: How ADIsimADC Models an ADC (Rev. B)11/9/2007
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AN-807: Multicarrier WCDMA Feasibility (Rev. 0)11/9/2007
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AN-808: Multicarrier CDMA2000 Feasibility (Rev. 0)11/9/2007
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AN-877: Interfacing to High Speed ADCs via SPI (Rev. B)11/9/2007
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AN-812: MicroController-Based Serial Port Interface (SPI) Boot Circuit (Rev. 0)9/20/2006
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• Software Download (zip, 21,702,560 bytes)
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AN-851: A WiMax Double Downconversion IF Sampling Receiver Design (Rev. 0)7/26/2006
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AN-715: A First Approach to IBIS Models: What They Are and How They Are Generated (Rev. 0)12/14/2004
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AN-741: Little Known Characteristics of Phase Noise (Rev. 0)11/29/2004
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
ADIsimRF
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.
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.View our quality and reliability program and certifications for more information.
| Part Number | Material Declaration | Reliability Data | Pin/Package Drawing | CAD Symbols, Footprints & 3D Models |
|---|---|---|---|---|
| AD9254BCPZ-150 | Material Declaration | Reliability Data | 48-Lead LFCSP (7mm x 7mm w/ EP) | |
| AD9254BCPZRL7-150 | Material Declaration | Reliability Data | 48-Lead LFCSP (7mm x 7mm w/ EP) | |
| Wafer Fabrication Data |
PCN-PDN Information
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Support & Discussions
AD9254 Discussions
Sample & Buy
Ordering FAQs
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Buy Now Pricing
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List Pricing
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Lead Times
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Sampling
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