AD9238

PRODUCTION

12-Bit, 20 MSPS/40 MSPS/65 MSPS, Dual A/D Converter

Data Sheet (Rev. D) Product Selection Table

Part Models: 11
1ku List Price: Starting From $16.18

Viewing:

Overview

Integrated dual 12-bit ADC
Single 3 V supply operation (2.7 V to 3.6 V)
SNR = 70 dB (to Nyquist, AD9238-65)
SFDR = 80.5 dBc (to Nyquist, AD9238-65)
Low power: 300 mW/channel at 65 MSPS
Differential input with 500 MHz, 3 dB bandwidth

Exceptional crosstalk immunity > 85 dB
Flexible analog input: 1 V p-p to 2 V p-p range
Offset binary or twos complement data format
Clock duty cycle stabilizer
Output datamux option

The AD9238 is a dual, 3 V, 12-bit, 20/40/65 MSPS analog to digital converter. It features dual high performance sample-and-hold amplifiers and an integrated voltage reference. The AD9238 uses a multistage differential pipelined architecture with output error correction logic to provide 12-bit accuracy and guarantee no missing codes over the full operating temperature range at up to 65 MSPS data rates.

The wide bandwidth, differential SHA allows for a variety of user-selectable input ranges and offsets including single-ended applications. It is suitable for various applications including multiplexed systems that switch full-scale voltage levels in successive channels and for sampling inputs at frequencies well beyond the Nyquist rate. The AD9238 is suitable for applications in communications, imaging and medical ultrasound.

Dual single-ended independent clock inputs are used to control all internal conversion cycles. A Duty Cycle Stabilizer (DCS) is available on the AD9238-65 and can compensate for wide variations in the clock duty cycle, allowing the converters to maintain excellent performance. The digital output data is presented in either straight binary or twos complement format. Out-of-range signals indicate an overflow condition, which can be used with the most significant bit to determine low or high overflow.

Fabricated on an advanced CMOS process, the AD9238 is available in either a space saving 64-pin LQFP or 64-pin LF-CSP and is specified over the industrial temperature range (-40°C to +85°C).

PRODUCT HIGHLIGHTS

Pin-compatible with the AD9248, 14-bit 20MSPS/ 40 MSPS/65 MSPS ADC.
Speed grade options of 20 MSPS, 40 MSPS, and 65 MSPS allow flexibility between power, cost, and performance to suit an application.
Low power consumption: AD9238-65: 65 MSPS = 600 mW, AD9238-40: 40 MSPS = 330 mW, and AD9238-20: 20 MSPS = 180 mW.
Typical channel isolation of 85 dB at fIN = 10 MHz.
The clock duty cycle stabilizer (AD9238-20/AD9238-40/ AD9238-65) maintains performance over a wide range of clock duty cycles.
Multiplexed data output option enables single-port operation from either Data Port A or Data Port B.

APPLICATIONS

Ultrasound equipment
Direct conversion or IF sampling receivers
- WB-CDMA, CDMA2000, WiMAX
Battery-powered instruments
Hand-held scopemeters
Low cost, digital oscilloscopes

Part Models: 11
1ku List Price: Starting From $16.18

Documentation

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 Model	Pin/Package Drawing	Documentation	CAD Symbols, Footprints, and 3D Models
AD9238BCPZ-20	64 ld LFCSP (9x9mm, 4.70mm exposed pad)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
AD9238BCPZ-40	64 ld LFCSP (9x9mm, 4.70mm exposed pad)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
AD9238BCPZ-65	64 ld LFCSP (9x9mm, 4.70mm exposed pad)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
AD9238BCPZRL-40	64 ld LFCSP (9x9mm, 4.70mm exposed pad)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
AD9238BCPZRL-65	64 ld LFCSP (9x9mm, 4.70mm exposed pad)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
AD9238BSTZ-20	64-Lead LQFP (7mm x 7mm)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
AD9238BSTZ-40	64-Lead LQFP (7mm x 7mm)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
AD9238BSTZ-65	64-Lead LQFP (7mm x 7mm)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
AD9238BSTZRL-20	64-Lead LQFP (7mm x 7mm)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
AD9238BSTZRL-40	64-Lead LQFP (7mm x 7mm)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
AD9238BSTZRL-65	64-Lead LQFP (7mm x 7mm)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN

Jun 9, 2021 - 20_0126 Conversion of Select Sizes LFCSP Products from Punched to Sawn and Transfer of Assembly Site to ASE Korea
		PCN20_0126_Form Qualification Results Summary Material_Report Detailed Change Description Package Outline Drawing Package Outline Drawing Qualification Results Summary Qualification Results Summary Qualification Results Summary Qualification Results Summary
AD9238BCPZ-20	PRODUCTION
AD9238BCPZ-40	PRODUCTION
AD9238BCPZ-65	PRODUCTION
AD9238BCPZRL-40	PRODUCTION
AD9238BCPZRL-65	PRODUCTION
Aug 4, 2009 - 09_0098 Assembly Site Transfer of 64L 7x7 LQFP Package from Carsem, Malaysia to Amkor Technology Korea.
		64L 7x7 LQFP Qualification Status_ATK Material_Report PCN09_0098_Form
AD9238BSTZ-20	PRODUCTION
AD9238BSTZ-40	PRODUCTION
AD9238BSTZ-65	PRODUCTION
AD9238BSTZRL-20	PRODUCTION
AD9238BSTZRL-40	PRODUCTION
AD9238BSTZRL-65	PRODUCTION
Jun 16, 2009 - 09_0027 Conversion to Laser Mark for the LQFP Packages (Single Grades)
		adi48lqfp Form Material_Report
AD9238BSTZ-20	PRODUCTION
AD9238BSTZ-40	PRODUCTION
AD9238BSTZ-65	PRODUCTION
AD9238BSTZRL-20	PRODUCTION
AD9238BSTZRL-40	PRODUCTION
AD9238BSTZRL-65	PRODUCTION

This is the most up-to-date revision of the Data Sheet.

Software Resources

Can't find the software or driver you need?

Request a Driver/Software

Hardware Ecosystem

Parts	Product Life Cycle	Description
Clock ICs 6
AD9510	RECOMMENDED FOR NEW DESIGNS	1.2 GHz Clock Distribution IC, PLL Core, Dividers, Delay Adjust, Eight Outputs
AD9511	RECOMMENDED FOR NEW DESIGNS	1.2 GHz Clock Distribution IC, PLL Core, Dividers, Delay Adjust, Five Outputs
AD9512	RECOMMENDED FOR NEW DESIGNS	1.2 GHz Clock Distribution IC, Two 1.6 GHz Inputs, Dividers, Delay Adjust, Five Outputs
AD9513	RECOMMENDED FOR NEW DESIGNS	800 MHz Clock Distribution IC, Dividers, Delay Adjust, Three Outputs

AD9514	RECOMMENDED FOR NEW DESIGNS	1.6 GHz Clock Distribution IC, Dividers, Delay Adjust, Three Outputs
AD9515	RECOMMENDED FOR NEW DESIGNS	1.6 GHz Clock Distribution IC, Dividers, Delay Adjust, Two Outputs
Differential Amplifiers 3
AD8352	RECOMMENDED FOR NEW DESIGNS	2 GHz Ultralow Distortion Differential RF/IF Amplifier
AD8138	PRODUCTION	Low Distortion Differential ADC Driver
ADA4932-1	RECOMMENDED FOR NEW DESIGNS	Low Power Differential ADC Driver
Voltage References 1
ADR130	PRODUCTION	Precision Series Sub-Band Gap Voltage Reference

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.

Open Tool

AD9238 IBIS Models 1

AD9238BST (All Speed Grades)

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.

Open Tool

AD9238 Simulink ADIsimADC Model

Open Tool

Evaluation Kits

Obsolete: AD9238 Evaluation Board

Buy Now View Details

Features and Benefits

This board is obsolete and no longer recommended.

Buffer memory board for capturing digital data used with high speed ADC evaluation boards to simplify evaluation
32 kB FIFO depth at 133 MSPS (upgradable)
Measures performance with ADC Analyzer™
Real-time FFT and time domain analysis
Analyze SNR, SINAD, SFDR, and harmonics
Simple USB port interface (2.0)
Supporting ADCs with serial port interfaces (SPI)
On-board regulator circuit, no power supply required 6 V, 2 A switching power supply included
Compatible with Windows 98 (2nd ed.), Windows 2000, Windows ME, and Windows XP

Product Details

The high speed ADC FIFO evaluation kit includes the latest version of ADC Analyzer and a buffer memory board to capture blocks of digital data from the Analog Devices, Inc., high speed analog-to-digital converter (ADC) evaluation boards. The FIFO board is connected to the PC through a USB port and is used with ADC Analyzer to quickly evaluate the performance of high speed ADCs. Users can view an FFT for a specific analog input and encode rate to analyze SNR, SINAD, SFDR, and harmonic information.

The evaluation kit is easy to set up. Additional equipment needed includes an Analog Devices high speed ADC evaluation board, a signal source, and a clock source. Once the kit is connected and powered, the evaluation is enabled instantly on the PC.

The HSC-ADC-EVALB-DCZ can be used with single and multichannel ADCs and converters with demultiplexed digital outputs.