AD7685

PRODUCTION

16-Bit, 250 kSPS PulSAR^® ADC in MSOP/QFN

Data Sheet (Rev. D) Product Selection Table

Part Models: 9
1ku List Price: Starting From $9.19

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Part Details

16-bit resolution with no missing codes
Throughput: 250 kSPS
INL: ±0.6 LSB typical, ±2 LSB maximum (±0.003% of FSR)
SINAD: 93.5 dB @ 20 kHz
THD: −110 dB @ 20 kHz
Pseudo differential analog input range 0 V to V_REF with V_REF up to V_DD
No pipeline delay
Daisy-chain multiple ADCs, BUSY indicator

Single-supply operation 2.3 V to 5.5 V with 1.8 V to 5 V logic interface
Serial interface SPI^®-/QSPI^™-/MICROWIRE^™-/DSP-compatible
Power dissipation:
1.4 μW @ 2.5 V/100 SPS
1.35 mW @ 2.5 V/100 kSPS, 4 mW @ 5 V/100 kSPS
Standby current: 1 nA

Part Models: 9
1ku List Price: Starting From $9.19

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
AD7685ACPZRL7	10-Lead LFCSP (3mm x 3mm)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
AD7685ARMZ	10-Lead MSOP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
AD7685ARMZRL7	10-Lead MSOP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
AD7685BCPZRL7	10-Lead LFCSP (3mm x 3mm)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
AD7685BRMZ	10-Lead MSOP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
AD7685BRMZRL7	10-Lead MSOP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
AD7685CCPZRL7	10-Lead LFCSP (3mm x 3mm)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
AD7685CRMZ	10-Lead MSOP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
AD7685CRMZRL7	10-Lead MSOP	Material Declaration Reliablity Data	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN

May 20, 2024 - 23_0143 Qualification of an Alternate Wafer Fab Site for 0.5um TSMC CMOS Process
		PCN23_0143_Form Material_Report Detailed Change Description Delta Qualification Matrix Qualification Results Summary
AD7685ACPZRL7	PRODUCTION
AD7685ARMZ	PRODUCTION
AD7685ARMZRL7	PRODUCTION
AD7685BCPZRL7	PRODUCTION
AD7685BRMZ	PRODUCTION
AD7685BRMZRL7	PRODUCTION
AD7685CCPZRL7	PRODUCTION
AD7685CRMZ	PRODUCTION
AD7685CRMZRL7	PRODUCTION
Jul 5, 2022 - 21_0271 Qualification of an Alternate Adhesive Material and Molding Compound for Select LFCSP Packages
		PCN21_0271_Form Material_Report Detailed Change Description Qualification Results Summary
AD7685ACPZRL7	PRODUCTION
AD7685BCPZRL7	PRODUCTION
AD7685CCPZRL7	PRODUCTION
Oct 18, 2016 - 16_0036 Assembly Relocation to Stats ChipPAC Jiangyin and Test Transfer to Stats ChipPAC Singapore of Select LFCSP Products
		PCN16_0036_Form Material_Report Qualification Results Summary Qualification Results Summary Qualification Results Summary Test Correlation Report
AD7685ACPZRL7	PRODUCTION
AD7685BCPZRL7	PRODUCTION
AD7685CCPZRL7	PRODUCTION
May 15, 2012 - 10_0006 Halogen Free Material Change for mini SOIC Products
		PCN10_0006_Form Material_Report Qualification Report Summary Qualification Report Summary
AD7685ARMZ	PRODUCTION
AD7685ARMZRL7	PRODUCTION
AD7685BRMZ	PRODUCTION
AD7685BRMZRL7	PRODUCTION
AD7685CRMZ	PRODUCTION
AD7685CRMZRL7	PRODUCTION
Aug 25, 2009 - 09_0165 Test transfer of AD7683,AD7684, AD7685, AD7686, AD7942 and AD9833 from StatsChipPac Singapore (SCS) to Carsem Malaysia (CRS)
		Material_Report PCN09_0165_Form Qual Plan for PCN 09-0165
AD7685ARMZ	PRODUCTION
AD7685ARMZRL7	PRODUCTION
AD7685BRMZ	PRODUCTION
AD7685BRMZRL7	PRODUCTION
AD7685CRMZ	PRODUCTION
AD7685CRMZRL7	PRODUCTION

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

Software Resources

FPGA/HDL 4

Can't find the software or driver you need?

Hardware Ecosystem

Parts	Product Life Cycle	Description
High Speed Op Amps (Bandwidth ≥ 50MHz) 2
ADA4807-1	RECOMMENDED FOR NEW DESIGNS	3.1 nV/√Hz, 1 mA, 180 MHz, Rail-to-Rail Input/Output Amplifier
ADA4807-2	RECOMMENDED FOR NEW DESIGNS	3.1 nV/√Hz, 1 mA, 180 MHz, Rail-to-Rail Input/Output Amplifier
Low Input Bias Current Op Amps (≤100 pA) 3
ADA4627-1	PRODUCTION	36 V, 19 MHz, Low Noise, Low Bias Current, JFET Op Amp
ADA4637-1	PRODUCTION	30 V, 80 MHz, Low Noise, Low Bias Current, JFET Op Amp

AD8610	PRODUCTION	Precision, Low Input Bias Current, Wide BW JFET Single Op Amp
Low Noise Op Amps (≤ 10nV/√Hz) 2
ADA4897-1	RECOMMENDED FOR NEW DESIGNS	1 nV/√Hz, Low Power, Rail-to-Rail Output Amplifiers
ADA4897-2	RECOMMENDED FOR NEW DESIGNS	1 nV/√Hz, Low Power Operational Amplifier
Low Power Op Amps (≤ 1mA/amp) 1
AD8031	PRODUCTION	2.7 V, 800 µA, 80 MHz Rail-to-Rail I/O Single Amplifier
Multiple Output Buck Regulators 1
ADP2114	PRODUCTION	Configurable, Dual 2 A/Single 4 A, Synchronous Step-Down DC-to-DC Regulator
Positive Linear Regulators (LDO) 2
ADP151	PRODUCTION	Ultralow Noise, 200 mA, CMOS Linear Regulator
ADP160	PRODUCTION	Ultra Low Quiescent Current 150 mA, CMOS Linear Regulator
Precision Op Amps (Vos ≤1mV & TCVos ≤2uV/C) 5
AD8605	PRODUCTION	Precision, Low Noise, CMOS, RRIO Op Amp (single)
ADA4805-1	RECOMMENDED FOR NEW DESIGNS	0.2 µV/°C Offset Drift, 105 MHz Low Power, Low Noise, Rail-to-Rail Amplifier
ADA4805-2	RECOMMENDED FOR NEW DESIGNS	Dual, 0.2 µV/°C Offset Drift, 105 MHz Low Power, Low Noise, Rail-to-Rail Amplifier
ADA4841-1	PRODUCTION	Low Power, Low Noise and Distortion, Rail-to-Rail Output Amplifier
ADA4841-2	PRODUCTION	Low Power, Low Noise and Distortion, Rail-to-Rail Output Amplifier
Series Voltage References 3
ADR435	PRODUCTION	Ultralow Noise XFET^® Voltage References with Current Sink and Source Capability
ADR4550	PRODUCTION	Ultra-Low-Noise, High-Accuracy 5.0V Voltage Reference
ADR391	PRODUCTION	2.5V Micropower, Low Noise Precision Voltage Reference with Shutdown
Standard Digital Isolators 4
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)
ADUM4401	PRODUCTION	5 kV RMS Quad-Channel Digital Isolators

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

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

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Features and Benefits

16-Bit Analog to Digital Converters
250 kSPS
Unipolar, Single-Ended 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-AD7685-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

AD7685 Evaluation Kit

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Product Details

The EVAL-AD7685SDZ is a fully featured evaluation kit for the AD7685. 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.