AD7741

PRODUCTION

Single and Multichannel, Synchronous Voltage-to-Frequency Converters

Data Sheet (Rev. A) Product Selection Table

Part Models: 4
1ku List Price: Starting From $3.44

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Overview

AD7741: One Single-Ended Input Channel
AD7742: Two Differential or Three Pseudo-Differential Input Channels
Integral Nonlinearity of 0.012% at f_OUT(Max) = 2.75 MHz (AD7742) and at f_OUT(Max) = 1.35 MHz (AD7741)
Single +5 V Supply Operation

Buffered Inputs
Programmable Gain Analog Front-End
On-Chip +2.5 V Reference
Internal/External Reference Option
Power Down to 35 µA Max
Minimal External Components Required
8-Lead and 16-Lead DIP and SOIC Packages

The AD7741/AD7742 are a new generation of synchronous voltage-to-frequency converters (VFCs). The AD7741 is a single-channel version in an 8-lead package (SOIC/DIP) and the AD7742 is a multichannel version in a 16-lead package (SOIC/DIP). No user trimming is required to achieve the specified performance.

The AD7741 has a single buffered input whereas the AD7742 has four buffered inputs that may be configured as two fully-differential inputs or three pseudo-differential inputs. Both parts include an on-chip +2.5 V bandgap reference that provides the user with the option of using this internal reference or an external reference.

The AD7741 has a single-ended voltage input range from 0 V to REFIN. The AD7742 has a differential voltage input range from –V_REF to +V_REF. Both parts operate from a single +5 V supply consuming typically 6 mA, and also contain a power down feature that reduces the current consumption to less than 35 μA.

Applications

Low Cost Analog-to-Digital Conversion
Signal Isolation
AD7742 is obsolete

Part Models: 4
1ku List Price: Starting From $3.44

Documentation

Data Sheet 1

AD7741: Single and Multichannel, Synchronous Voltage-to-Frequency Converters Data Sheet (Rev.A) 06/03/1999

Application Note 2

AN-276: Analog to Digital Conversion by Using V/F Converters 01/01/2000

AN-276: Analog-to-Digital Conversion Using Voltage-to-Frequency Converters 08/26/2020

Frequently Asked Question 1

FAQ 06/17/2015

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
AD7741BNZ	8-Lead PDIP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
AD7741BRZ	8-Lead SOIC	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
AD7741BRZ-REEL7	8-Lead SOIC	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
AD7741YRZ	8-Lead SOIC	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN

Feb 17, 2014 - 13_0265 Qualification of ASE Chungli, as an Alternate Assembly Site for Select 8L and 14L SOICN Packages
		PCN13_0265_Form Material_Report Detailed Change Description Qualification Report Summary
AD7741BNZ	PRODUCTION
Feb 8, 2010 - 04_0080 Qualification of the 8" C6 and Q Wafer Fab Processes at Analog Devices, Limerick, Ireland.
		PCN04_0080_Form Material_Report Reliability Report Reliability Report
AD7741BNZ	PRODUCTION
AD7741BRZ	PRODUCTION
AD7741BRZ-REEL7	PRODUCTION
AD7741YRZ	PRODUCTION
Aug 19, 2009 - 07_0024 Package Material Changes for SOT23, MiniSO, MQFP, PDIP, PLCC, SOIC (narrow and wide body), SSOP, TSSOP and TSSOP exposed pad
		Material_Report Material_Report Parts List PCN07_0024_Form Qual Data
AD7741BNZ	PRODUCTION
Nov 13, 2013 - 13_0265 Qualification of ASE Chungli, as an Alternate Assembly Site for Select 8L and 14L SOICN Packages
		PCN13_0265_Form Material_Report Detailed Change Description Qualification Report Summary
AD7741BRZ	PRODUCTION
AD7741BRZ-REEL7	PRODUCTION
AD7741YRZ	PRODUCTION