AD7641

PRODUCTION

18-Bit, 2 MSPS SAR ADC

Data Sheet (Rev. A) Product Selection Table

Part Models: 3
1ku List Price: Starting From $38.79

Viewing:

Overview

18-bit resolution with no missing codes
2.5 V internal low drift reference
Throughput:
2 MSPS (Warp mode)
1.5 MSPS (Normal mode)
Differential input range: ± V_REF (V_REF up to 2.5 V)
INL: ±2 LSB typical

No pipeline delay (SAR architecture)
Parallel (18-, 16-, or 8-bit bus)
Serial 5 V/3.3 V/2.5 V interface
SPI^®/QSPI^™/MICROWIRE^™/DSP compatible
On-board low drift reference with buffer and temperature sensor
See datasheet for additional features

The AD7641 is a 18-bit, 2 MSPS, charge redistribution SAR, fully differential analog-to-digital converter that operates from a single 2.5 V power supply. The part contains a high-speed 18-bit sampling ADC, an internal conversion clock, an internal reference buffer, error correction circuits, and both serial and parallel system interface ports. It features a very high sampling rate mode (Warp) and a fast mode (Normal) for asynchronous conversion rate applications.

The AD7641 is hardware factory calibrated and comprehensively tested to ensure ac parameters such as signal-to-noise ratio (SNR) and total harmonic distortion (THD) in addition to the more traditional dc parameters of gain, offset and linearity.

Operation is specified from −40°C to +85°C.

PRODUCT HIGHLIGHTS

Fast Throughput.
The AD7641 is a 2 MSPS, charge redistribution, 18-bit SAR ADC.
Superior Linearity.
The AD7641 has no missing 18-bit code.
Internal Reference.
The AD7641 has a 2.048 V internal reference with a typical drift of ±10 ppm/°C and an on-chip TEMP sensor.
Single-Supply Operation.
The AD7641 operates from a 2.5 V single supply.
Serial or Parallel Interface.
Versatile parallel (16- or 8-bit bus) or 2-wire serial interface arrangement compatible with 2.5 V, 3.3 V, or 5 V logic.

APPLICATIONS

Medical instruments
High dynamic data acquisition
Instrumentation
Spectrum analysis
ATE

Part Models: 3
1ku List Price: Starting From $38.79

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
AD7641BCPZ	48-Lead LFCSP (7mm x 7mm x 0.85mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
AD7641BSTZ	48-Lead LQFP (7mm x 7mm)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
AD7641BSTZRL	48-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
AD7641BCPZ	PRODUCTION
Sep 13, 2017 - 16_0077 CANCELLED: Conversion of Select 4x4, 5x5, 6x6 and 7x7mm LFCSP Package Outlines from Punch to Sawn and Transfer of Assembly Site to ASE Korea.
		PCN16_0077_Form Material_Report Detailed Parts List Detailed Parts List Package Outline Drawing Detailed Change Description Qualification Results Summary
AD7641BCPZ	PRODUCTION
Oct 18, 2016 - 16_0034 Assembly Relocation of Select LQFP,LQFP_EP,MQFP,TQFP,TQFP_EP Products to Stats ChipPAC China Jiangyin
		PCN16_0034_Form Material_Report Qualification Results Summary Qualification Results Summary Qualification Results Summary
AD7641BSTZ	PRODUCTION
AD7641BSTZRL	PRODUCTION
Jan 5, 2009 - 07_0077 Certification of STATSChipPAC Shanghai, China and AMKOR Philippines as additional sources for Assembly & Test of QFP Packages
		07_0077Rev D_LQFP_Dec17 07_0077Rev D_MQFP_Dec15 07_0077Rev D_Obsolesence_Dec15 07_0077Rev D_TQFP_Dec15 Material_Report PCN07_0077_Form QFP Transfer Qualification Results-tests_DEC12CL
AD7641BSTZ	PRODUCTION
AD7641BSTZRL	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
Differential Amplifiers 3
AD8475	PRODUCTION	Precision, Selectable Gain, Fully Differential Funnel Amplifier
AD8139	RECOMMENDED FOR NEW DESIGNS	Low Noise, Rail-to-Rail, Differential ADC Driver
ADA4930-1	RECOMMENDED FOR NEW DESIGNS	Ultralow Noise Drivers for Low Voltage ADCs
Operational Amplifiers (Op Amps) 6
AD8031	PRODUCTION	2.7 V, 800 µA, 80 MHz Rail-to-Rail I/O Single Amplifier

AD8032	PRODUCTION	2.7 V, 800 µA, 80 MHz Rail-to-Rail I/O Dual Amplifier
ADA4841-1	PRODUCTION	Low Power, Low Noise and Distortion, Rail-to-Rail Output Amplifier
AD8021	PRODUCTION	Low Noise, High Speed Amplifier for 16-Bit Systems
ADA4899-1	PRODUCTION	Unity-Gain Stable, Ultralow Distortion, 1 nV/√Hz Voltage Noise, High Speed Op Amp
AD8022	PRODUCTION	Dual High Speed, Low Noise Op Amp
Voltage References 5
ADR421	PRODUCTION	Ultraprecision, Low Noise, 2.500 V XFET® Voltage References
ADR431	PRODUCTION	Ultralow Noise XFET^® Voltage References with Current Sink and Source Capability
AD780	PRODUCTION	2.5 V/3.0 V High Precision Reference
ADR291	PRODUCTION	Low Noise Micropower Precision Voltage Reference (2.5 V)
AD1582	PRODUCTION	2.5V Micropower, Precisions Series Mode Voltage References

Parts	Product Life Cycle	Description
AD4003	PRODUCTION	18-Bit, 2 MSPS/1 MSPS/500 kSPS, Easy Drive, Differential SAR ADCs

Evaluation Kits

AD7641 Evaluation Board

Buy Now View Details

Product Details

The EVAL-AD7641EDZ is a fully featured evaluation Kit for the AD7641. This board operates in stand alone mode or in conjunction with the Converter Evaluation and Development board, EVAL-CED1Z . When operated with the Converter Evaluation and Development board, software is provided enabling the user to perform detailed analysis of the ADC's performance. This software includes the technical note describing the operation and set up of the evaluation board in standalone operation or when operated with the Converter Evaluation and Development board.