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

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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

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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

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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.

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