AD7691

PRODUCTION

18-Bit, 1.5 LSB INL, 250 kSPS PulSAR^® Differential ADC in MSOP/QFN

Data Sheet (Rev. E)

Part Models: 4
1ku List Price: Starting From $17.78

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Part Details

18-bit resolution with no missing codes
Throughput: 250 kSPS
INL: ±0.75 LSB typical, ±1.5 LSB maximum (±6 ppm of FSR)
Dynamic range: 102 dB typical at 250 kSPS
Oversampled dynamic range: 125 dB at1 kSPS
Noise-free code resolution: 20 bits at 1 kSPS
Effective resolution: 22.7 bits at 1 kSPS
See data sheet for additional features

AD7691-EP supports defense and aerospace applications (AQEC standard)

Download AD7691-EP data sheet (pdf)
Military temperature range: –55°C to +105°C
Controlled manufacturing baseline
One assembly/test site
One fabrication site
Enhanced product change notification
Qualification data available on request
V62/14632-01XE DSCC Drawing Number

Part Models: 4
1ku List Price: Starting From $17.78

Documentation

Tested Product Combinations 1

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
AD7691BCPZRL7	10-Lead LFCSP (3mm x 3mm)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
AD7691BRMZ	10-Lead MSOP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
AD7691BRMZ-RL7	10-Lead MSOP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
AD7691SRMZ-EP-RL7	10-Lead MSOP	Material Declaration Reliablity Data	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN
No Match Found
May 15, 2012 - 10_0006 Halogen Free Material Change for mini SOIC Products
		PCN10_0006_Form Material_Report Qualification Report Summary Qualification Report Summary
AD7691BRMZ	PRODUCTION
AD7691BRMZ-RL7	PRODUCTION

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

Software Resources

Device Drivers 1

PulSAR ADC GitHub Linux Driver Source Code

Can't find the software or driver you need?

Hardware Ecosystem

Parts	Product Life Cycle	Description
ADA4897-1	RECOMMENDED FOR NEW DESIGNS	1 nV/√Hz, Low Power, Rail-to-Rail Output Amplifiers
ADA4940-1	PRODUCTION	Ultralow Power, Low Distortion ADC Driver
ADA4941-1	PRODUCTION	Single-Supply, Differential 18-Bit ADC Driver
Differential Amplifiers 1
AD8476	PRODUCTION	Low Power, Unity Gain Fully Differential Amplifier & ADC Driver

High Speed Op Amps 3
AD8021	PRODUCTION	Low Noise, High Speed Amplifier for 16-Bit Systems
ADA4841-1	PRODUCTION	Low Power, Low Noise and Distortion, Rail-to-Rail Output Amplifier
AD8031	PRODUCTION	2.7 V, 800 µA, 80 MHz Rail-to-Rail I/O Single Amplifier
Interface Transceivers & Isolators 4
ADUM4401	PRODUCTION	5 kV RMS Quad-Channel Digital Isolators
ADUM3401	PRODUCTION	Quad-Channel, Digital Isolator, Enhanced System-Level ESD Reliability
ADUM3481	PRODUCTION	Small, 3.75 kV RMS Quad Digital Isolators (3/1 Channel Directionality)
ADUM1401	PRODUCTION	Quad-Channel Digital Isolator (3/1 Channel Directionality)
Operational Amplifiers 3
ADA4627-1	PRODUCTION	36 V, 19 MHz, Low Noise, Low Bias Current, JFET Op Amp
ADA4610-2	RECOMMENDED FOR NEW DESIGNS	Low Noise, Precision, Rail-to-Rail Output, JFET Dual Op Amp
AD8655	PRODUCTION	Low Noise, Precision CMOS Amplifier
Voltage References 3
ADR445	PRODUCTION	Ultralow Noise, LDO XFET^® 5.0V Voltage Reference w/Current Sink and Source
ADR4550	RECOMMENDED FOR NEW DESIGNS	Ultra-Low-Noise, High-Accuracy 5.0V Voltage Reference
ADR435	PRODUCTION	Ultralow Noise XFET^® Voltage References with Current Sink and Source Capability

Tools & Simulations

Precision ADC Driver Tool

The Precision ADC Driver Tool is a web application that simulates the performance of precision ADC and driver combinations. Potential issues with driver selection, kickback settling, and distortion are flagged, and design tradeoffs can be quickly evaluated. Simulations and calculations include system noise, distortion, and settling of the ADC input

Open Tool

AD7685 IBIS Models 1

AD7685 (All Models)

Evaluation Kits

18-Bit, 250 kSPS PulSAR® ADC PMOD Evaluation Board

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Features and Benefits

18-Bit Analog to Digital Converters
250 kSPS
Unipolar, Differential Input
Standard SPI PMOD header/pin out
Connectable to 3rd Party FPGA and MCU Platforms

Product Details

The PMOD-compatible evaluation/prototyping board is a small form factor, low-cost analog-to-digital conversion option. When prototyping, this board is used in conjunction with your favorite MCU or FPGA development board which has the SPI PMOD peripheral connector. Direct electrical and physical connection will enable you to quickly develop software for your system.

This board can also be operated as an evaluation board using the System Demonstration Platform (EVAL-SDP-CB1Z) and an adaptor board (SDP-PMD-IB1Z). When operated with the System Demonstration Platform, a LabView software GUI is provided enabling the user to perform analysis of the ADC's performance.

Resources

EVAL-AD7691-PMDZ Design & Integration Files
2/28/2023

PulSAR ADC PMOD User Guide
4/27/2016

Software

PulSAR ADC PMOD Labview Evaluation Software
182.96 M

AD7691 Evaluation Kit

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Product Details

The EVAL-AD7691SDZ is a fully featured evaluation kit for the AD7691. This board operates in standalone mode or in conjunction with the System Development Platform, EVAL-SDP-CB1Z. When operated with the System Development Platform 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 System Development Platform. When operated in standalone mode the ADZS-BRKOUT-EX3 break out board is recommended for access to various control pins.