AD7172-2
Low Power, 24-Bit, 31.25 kSPS, Sigma-Delta ADC with True Rail-to-Rail Buffers
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Features
- Fast and flexible output rate: 1.25 SPS to 31.25 kSPS
- Channel scan data rate of 6.21 kSPS/channel (161 µs settling)
- Performance specifications
- 17.2 noise free bits at 31.25 kSPS
- 24 noise free bits at 5 SPS
- INL: ±2 ppm of FSR
- 85 dB rejection of 50 Hz and 60 Hz with 50 ms settling
- User configurable input channels
- 2 fully differential channels or 4 single-ended channels
- Crosspoint multiplexer
- On-chip 2.5 V reference (±2 ppm/°C drift)
- True rail-to-rail analog and reference input buffers
- Internal or external clock
- See data sheet for additional features
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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.
Applications
- Process control: PLC/DCS modules
- Temperature and pressure measurement - Medical and scientific multichannel instrumentation
- Chromatography
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Submit your question below and we will return the best answer from ADI’s knowledge database:
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Analog Devices Support Portal is a one-stop shop to answer all your ADI questions.
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AD7172-2
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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 |
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| AD7172-2BRUZ |
24-Lead TSSOP
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| AD7172-2BRUZ-RL |
24-Lead TSSOP
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| AD7172-2BRUZ-RL7 |
24-Lead TSSOP
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- AD7172-2BRUZ
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24-Lead TSSOP
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HTML
Material Declaration
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HTML
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Ultra Librarian
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SamacSys
- AD7172-2BRUZ-RL
- Pin/Package Drawing
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24-Lead TSSOP
- Documentation
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HTML
Material Declaration
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HTML
Reliablity Data
- CAD Symbols, Footprints, and 3D Models
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Ultra Librarian
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SamacSys
- AD7172-2BRUZ-RL7
- Pin/Package Drawing
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24-Lead TSSOP
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HTML
Material Declaration
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HTML
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Ultra Librarian
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SamacSys
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Part Models
Product Lifecycle
PCN
Feb 16, 2016
- 16_0009
Change of MSL Rating for AD7172-2, AD7175-2, AD7176-2 & AD7177-2 TSSOP Devices
AD7172-2BRUZ
PRODUCTION
AD7172-2BRUZ-RL
PRODUCTION
AD7172-2BRUZ-RL7
PRODUCTION
Filter by Model
Part Models
Product Lifecycle
PCN
Feb 16, 2016
- 16_0009
Change of MSL Rating for AD7172-2, AD7175-2, AD7176-2 & AD7177-2 TSSOP Devices
AD7172-2BRUZ
PRODUCTION
AD7172-2BRUZ-RL
PRODUCTION
AD7172-2BRUZ-RL7
PRODUCTION
Software & Part Ecosystem
Device Drivers
Mbed Support
Mbed is an open source, development environment for ARM microcontrollers.
Looking for Evaluation Software? You can find it here
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4 Ω Ron, 4-Channel ±15 V/+12 V/±5 V iCMOS Multiplexer |
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1.8 Ω Maximum On Resistance, ±15 V/12 V/±5 V, 4:1, iCMOS Multiplexer |
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Low Power Op Amps (≤ 1mA/amp) 1 |
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RECOMMENDED FOR NEW DESIGNS |
Dual 55V, EMI Enhanced, Zero Drift, Ultralow Noise, Rail-to-Rail Output Operational Amplifiers |
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Negative Linear Regulators (LDO)1 |
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RECOMMENDED FOR NEW DESIGNS |
–28 V, −200 mA, Low Noise, Linear Regulator |
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Positive Linear Regulators (LDO)1 |
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Series Voltage References2 |
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Ultralow Noise, LDO XFET® 5.0V Voltage Reference w/Current Sink and Source |
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Ultra-Low-Noise, High-Accuracy 5.0V Voltage Reference |
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Standard Digital Isolators4 |
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Small, 3.75 kV RMS Quad Digital Isolators (3/1 Channel Directionality) |
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5 kV RMS Quad-Channel Digital Isolators |
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Unregulated Doubling/Inverting Charge Pumps1 |
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Zero-Drift Op Amps1 |
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| Parts | Product Life Cycle | Description |
|---|---|---|
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RECOMMENDED FOR NEW DESIGNS |
32-Bit, 10 kSPS, Sigma-Delta ADC with 100 µs Settling and True Rail-to-Rail Buffers |
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RECOMMENDED FOR NEW DESIGNS |
24-Bit, 250 kSPS, Sigma-Delta ADC with 20 µs Settling and True Rail-to-Rail Buffers |
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RECOMMENDED FOR NEW DESIGNS |
24-Bit, 250 kSPS Sigma Delta ADC with 20 µs Settling |
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RECOMMENDED FOR NEW DESIGNS |
Low Power, 8-/16-Channel, 31.25 kSPS, 24-Bit, Highly Integrated Sigma-Delta ADC |
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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 |
Can't find the software or driver you need?
Request a Driver/SoftwareEvaluation Kits 1
EVAL-AD7172-2
AD7172-2 Evaluation Board
Product Detail
The EVAL-AD7172-2SDZ evaluation software fully configures the AD7172-2 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 details about the device are available in the AD7172-2 data sheet, which should be consulted when using the EVAL-AD7172-2SDZ.
Resources
Evaluation Kits1
Tools & Simulations 4
Virtual Eval - BETA
Design Tool
Design Tool
Signal Chain Designer - BETA
IBIS Model 1
Reference Designs 2
CN0364
PLC/DCS Quad Channel Voltage and Current Input with HART Compatibility
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Info:Circuits from the lab
Part Used 12
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Circuits from the lab
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Videos
2014-07-24
01:25
sample_iTunes
2017-04-07
01:20
Valeria
2014-02-11
01:44
AnalogDevices-F04
