AD7173-8

RECOMMENDED FOR NEW DESIGNS

Low Power, 8-/16-Channel, 31.25 kSPS, 24-Bit, Highly Integrated Sigma-Delta ADC

Data Sheet (Rev. B) Product Selection Table

Part Models: 3
1ku List Price: Starting From $9.36

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Part Details

Low power, 8-/16-channel, highly integrated multiplexed analog-to-digital converter (ADC)
Integration
- Precision analog input buffers and reference input buffers
- 2.5 V precision reference (3.5 ppm/°C)
- Cross point multiplexer (enable system diagnostic)
- 8 full differential or 16 single-ended channels
- Clock oscillator
- GPIO and GPO pins with automatic external mux control
Fast and flexible output rate: 1.25 SPS to 31.25 kSPS
Channel scan data rate: 6.21 kSPS/channel (161 μs settling)
Performance specifications
- 17.5 noise free bits at 31.25 kSPS
- 24 noise free bits at 1.25 SPS
- INL: ±3 ppm/FSR
85 dB rejection of 50 Hz and 60 Hz with 50 ms settling
Operates with either 3.3 V or 5 V supply
- Single supply
  - 3.3 V or 5 V AVDD1, 2 V to 5 V AVDD2, and 2 V to 5 V IOVDD
- Optional split supply
  - AVDD1 and AVSS ± 2.5 V or AVDD1 and AVSS ± 1.65 V
- Current: 1.4 mA
3-/4-wire serial digital interface (Schmitt trigger on SCLK)
- CRC error checking
- SPI, QSPI, MICROWIRE, and DSP compatible
Package: 40-lead 6 mm × 6 mm LFCSP
Temperature range: −40°C to +105°C

Part Models: 3
1ku List Price: Starting From $9.36

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
AD70/091Z-0-RL	40-Lead LFCSP (6mm x 6mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
AD7173-8BCPZ	40-Lead LFCSP (6mm x 6mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
AD7173-8BCPZ-RL	40-Lead LFCSP (6mm x 6mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN

Aug 6, 2014 - 14_0135 Assembly and Test Transfer of AD7173-8, AD7175-8 in 6x6 mm and ADP5051, ADP5053 in 7x7 mm LFCSP to StatsChipPac China
		PCN14_0135_Form Material_Report Detailed Change Description Qualification Results Summary Test Correlation Report
AD7173-8BCPZ	PRODUCTION
AD7173-8BCPZ-RL	PRODUCTION
Feb 25, 2014 - 14_0007 AD7173-8 Data Sheet Update
		PCN14_0007_Form Material_Report
AD7173-8BCPZ	PRODUCTION
AD7173-8BCPZ-RL	PRODUCTION
Nov 12, 2013 - 13_0232 Assembly and Test Transfer of Select 6x6 and 7x7mm LFCSP Products to STATS ChipPAC China
		PCN13_0232_Form Material_Report Detailed Change Description Qualification Plan Summary Test Correlation Plan
AD7173-8BCPZ	PRODUCTION
AD7173-8BCPZ-RL	PRODUCTION

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

Software Resources

More Mbed supported ADI Products

Mbed Support 5

Can't find the software or driver you need?

Hardware Ecosystem

Parts	Product Life Cycle	Description
Dual-Supply Analog Switches and Multiplexers 2
ADG1409	PRODUCTION	4 Ω R_on, 4-Channel ±15 V/+12 V/±5 V iCMOS Multiplexer
ADG1404	PRODUCTION	1.8 Ω Maximum On Resistance, ±15 V/12 V/±5 V, 4:1, iCMOS Multiplexer
Low Power Op Amps (≤ 1mA/amp) 1
ADA4522-2	RECOMMENDED FOR NEW DESIGNS	Dual 55V, EMI Enhanced, Zero Drift, Ultralow Noise, Rail-to-Rail Output Operational Amplifiers
Negative Linear Regulators (LDO) 1
ADP7182	RECOMMENDED FOR NEW DESIGNS	–28 V, −200 mA, Low Noise, Linear Regulator

Positive Linear Regulators (LDO) 1
ADP7118	RECOMMENDED FOR NEW DESIGNS	20 V, 200 mA, Low Noise, CMOS LDO Linear Regulator
Series Voltage References 2
ADR445	PRODUCTION	Ultralow Noise, LDO XFET^® 5.0V Voltage Reference w/Current Sink and Source
ADR4550	PRODUCTION	Ultra-Low-Noise, High-Accuracy 5.0V Voltage Reference
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
Unregulated Doubling/Inverting Charge Pumps 1
ADM660	PRODUCTION	CMOS Switched-Capacitor Voltage Converter
Zero-Drift Op Amps 1
ADA4528-2	RECOMMENDED FOR NEW DESIGNS	Precision, Ultralow Noise, RRIO, Zero-Drift Dual Op Amp

Parts	Product Life Cycle	Description
AD7176-2	RECOMMENDED FOR NEW DESIGNS	24-Bit, 250 kSPS Sigma Delta ADC with 20 µs Settling
AD7175-2	RECOMMENDED FOR NEW DESIGNS	24-Bit, 250 kSPS, Sigma-Delta ADC with 20 µs Settling and True Rail-to-Rail Buffers
AD7172-2	RECOMMENDED FOR NEW DESIGNS	Low Power, 24-Bit, 31.25 kSPS, Sigma-Delta ADC with True Rail-to-Rail Buffers
AD7172-4	RECOMMENDED FOR NEW DESIGNS	Low Power, with 4- or 8-channel, 24-bit, 31.25 kSPS, Sigma-Delta ADC with True Rail-to-Rail Buffers
AD7177-2	RECOMMENDED FOR NEW DESIGNS	32-Bit, 10 kSPS, Sigma-Delta ADC with 100 µs Settling and True Rail-to-Rail Buffers

Tools & Simulations

Virtual Eval - BETA

Virtual Eval is a web application to assist designers in product evaluation of ADCs, DACs, and other ADI products. Using detailed models on Analog’s servers, Virtual Eval simulates crucial part performance characteristics within seconds. Configure operating conditions such as input tones and external jitter, as well as device features like gain or digital down-conversion. Performance characteristics include noise, distortion, and resolution, FFTs, timing diagrams, response plots, and more.

Open Tool

Design Tool 1

AD7173-8 Filter Model

Signal Chain Designer

Signal Chain Designer is a web-based tool designed to create and simulate complex precision signal chains. See your circuit’s performance before you commit to your PCB: transfer function, noise, power consumption, input range, and DC error. Quickly experiment with different parts and architectures. Signal chains can be exported to LTspice for further analysis.

Open Tool

IBIS Model 1

AD7173-8 IBIS Model

Evaluation Kits

Evaluating the AD7173-8 24-Bit, 8-/16-Channel, 31.25kSPS, Sigma-Delta ADC with True Rail-to-Rail Buffers

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Features and Benefits

Full featured evaluation board for the AD7173-8
PC control in conjunction with the Analog Devices, Inc., SDP-K1 board (EVAL-SDP-CK1Z)
PC software for control and data analysis (time domain)
Standalone capability

Product Details

The EVAL-AD7173-8ARDZ evaluation board features the AD7173-8, a 24-bit, 250kSPS analog-to-digital converter (ADC) with integrated analog input buffers, on-board power supply regulation, and an external amplifier section for amplifier evaluation. A 5V USB is regulated to 5V and 3.3V; this supplies the AD7173-8 and support components. The evaluation board connects to a USB port via the system demonstration platform (SDP) controller board EVAL-SDP-CK1Z (SDP-K1).

The AD717x ACE software fully configures the AD7173-8 device functionality via a user accessible register interface and provides DC time domain analysis in the form of waveform graphs, histograms, and associated noise analysis for ADC performance evaluation. Full specifications on the AD7173-8 are available in the product data sheet, which must be consulted in conjunction with this user guide when working with the evaluation board. Full details for the SDP-K1 controller board are available on the Analog Devices website.

Resources

UG-2322: Evaluating the AD7173-8 24-Bit, 8-/16-Channel, 31.25kSPS, Sigma-Delta ADC with True Rail-to-Rail Buffers (Rev.A)
4/15/2025

EVAL-AD7173-8ARDZ Design Files
4/15/2025

AD7173-8SDZ Evaluation Board

Buy Now View Details

Features and Benefits

Full featured evaluation board for the AD7173-8
PC control in conjunction with the SDP (see EVAL-SDP-CB1Z from Analog Devices, Inc. for additional information)
PC software for control and data analysis (time domain)
Standalone capability

Product Details

The EVAL-AD7173-8SDZ is a fully featured evaluation kit for the AD7173-8. This board operates in stand alone 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. The SDP Controller board is a separate list item in the ordering guide below (EVAL-SDP-CB1Z). If you have not previously purchased an SDP Controller board, please do so to ensure a full evaluation setup.