Specification	AD7172-2BRUZ

Architecture	Sigma-Delta
Configuration	MUX-ADC
Data Interface	DSP, SPI
Input Type	Single Ended, Differential
Mounting Type	Surface Mount
Number of A/D Converters	1 count
Number of Bits	24 bits
Number of Inputs	4, 2
Operating Temperature (Max)	105 °C
Operating Temperature (Min)	-40 °C
Package Length	0.173 in
Package Name	24-TSSOP
Package Width	4.4 mm
Reference Type	External, Internal
Sampling Rate (Per Second)	31.25 kHz
Voltage - Supply, Analog (Max)	5.5 V
Voltage - Supply, Analog (Min)	2 V
Voltage - Supply, Digital (Max)	5.5 V
Voltage - Supply, Digital (Min)	2 V

AD7172 Series

Low Power, with 4- or 8-channel, 24-bit, 31.25 kSPS, Sigma-Delta ADC with True Rail-to-Rail Buffers

Part	Number of A/D Converters	Reference Type	Package Name	Configuration	Voltage - Supply, Digital (Max)	Voltage - Supply, Digital (Min)	Number of Bits	Architecture	Package Width	Package Length	Number of Inputs	Sampling Rate (Per Second)	Operating Temperature (Min)	Operating Temperature (Max)	Voltage - Supply, Analog (Max)	Voltage - Supply, Analog (Min)	Mounting Type	Input Type	Data Interface	Package / Case
Analog Devices Inc./Maxim Integrated AD7172-2BRUZ	1 count	External Internal	24-TSSOP	MUX-ADC	5.5 V	2 V	24 bits	Sigma-Delta	4.4 mm	0.173 in	2 4	31.25 kHz	-40 °C	105 °C	5.5 V	2 V	Surface Mount	Differential Single Ended	DSP SPI
Analog Devices Inc./Maxim Integrated AD7172-2BRUZ-RL	1 count	External Internal	24-TSSOP	MUX-ADC	5.5 V	2 V	24 bits	Sigma-Delta	4.4 mm	0.173 in	2 4	31.25 kHz	-40 °C	105 °C	5.5 V	2 V	Surface Mount	Differential Single Ended	DSP SPI
Analog Devices Inc./Maxim Integrated AD7172-4BCPZ-RL7	1 count	External Internal	32-LFCSP	MUX-ADC	5.5 V	2 V	24 bits	Sigma-Delta	5 mm	5 mm	4 8	31.25 kHz	-40 °C	105 °C	5.5 V	2 V	Surface Mount	Differential Single Ended	DSP SPI	32-WFQFN Exposed Pad CSP
Analog Devices Inc./Maxim Integrated AD7172-2BRUZ-RL7	1 count	External Internal	24-TSSOP	MUX-ADC	5.5 V	2 V	24 bits	Sigma-Delta	4.4 mm	0.173 in	2 4	31.25 kHz	-40 °C	105 °C	5.5 V	2 V	Surface Mount	Differential Single Ended	DSP SPI

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

Distributor	Package	Quantity	$	Updated

Digikey	Tube	1	$ 19.86	<1d
		10	$ 15.85
		62	$ 14.08
		124	$ 13.61
		310	$ 13.11
		558	$ 12.86

CAD

3D models and CAD resources for this part

Description

General part information

AD7172 Series

TThe AD7172-2 is an intelligent, low noise, low power, multiplexed, Σ-Δ analog-to-digital converter (ADC) with 2- or 4-channel (fully differential/single-ended) inputs for low bandwidth signals. The AD7172-2 has a maximum channel scan rate of 6.21 kSPS (161 µs) for fully settled data. The output data rates range from 1.25 SPS to 31.25 kSPS.The AD7172-2 integrates key analog and digital signal conditioning blocks to allow users to configure an individual setup for each analog input channel in use via the SPI. Integrated true rail-to-rail buffers on the analog inputs and external reference inputs provide easy to drive high impedance inputs. The precision 2.5 V low drift (2 ppm/°C) band gap internal reference (with an output reference buffer) adds embedded functionality to reduce the external component count.The digital filter allows simultaneous 50 Hz and 60 Hz rejection at a 27.27 SPS output data rate. The user can switch between different filter options according to the demands of each channel in the application, with further digital processing functions such as offset and gain calibration registers, which are also configurable on a per channel basis. General-purpose inputs/outputs (GPIOs) control external multiplexers synchronous to the ADC conversion timing.The specified operating temperature range is −40°C to +105°C. The AD7172-2 is in a 24-lead TSSOP package.ApplicationsProcess control: PLC/DCS modules- Temperature and pressure measurementMedical and scientific multichannel instrumentationChromatography

Documents

Technical documentation and resources

AD7172-2BRUZ | Datasheet

Datasheet

Package Drawing - 24-Lead TSSOP

Package Drawing

UG-762: Evaluating the AD7172-2 Low Power, 24-Bit, 31.25 kSPS, Sigma-Delta ADC with True Rail-to-Rail Buffers (Rev.A)

User Guide