AD7175-8
24-Bit, 8-/16-Channel, 250 kSPS, Sigma-Delta ADC with True Rail-to-Rail Buffers
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Features
- Fast and flexible output rate: 5 SPS to 250 kSPS
- Performance specifications
17.2 noise free bits at 250 kSPS
20.2 noise free bits at 2.5 kSPS
24 noise free bits at 20 SPS
INL: ±1 ppm of FSR - 85 dB filter rejection of 50 Hz and 60 Hz with 50 ms settling
- 85 dB filter rejection of 50 Hz and 60 Hz with 50 ms settling
- User configurable input channels
8 fully differential channels or 16 single-ended channels
Crosspoint multiplexer
- Channel scan data rate of 50 kSPS/channel (20 µs settling)
- On-chip 2.5 V reference (±2 ppm/°C drift)
- True rail-to-rail analog and reference input buffers
- Internal or external clock
- Power supply: AVDD1 − AVSS = 5 V, AVDD2 = IOVDD = 2 V to 5 V (nominal)
Split supply with AVDD1/AVSS at ±2.5 V - ADC current: 8.4 mA
- Temperature range: −40°C to +105°C 3- or 4-wire serial digital interface (Schmitt trigger on SCLK) Serial port interface (SPI), QSPI, MICROWIRE, and DSP compatible
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The AD7175-8 is a low noise, fast settling, multiplexed, 8-/16- channel (fully/pseudo differential) Σ-Δ analog-to-digital converter (ADC) for low bandwidth inputs. It has a maximum channel scan rate of 50 kSPS (20 µs) for fully settled data. The output data rates range from 5 SPS to 250 kSPS.
The AD7175-8 integrates key analog and digital signal condition-ing blocks to allow users to configure an individual setup for each analog input channel in use. Each feature can be user selected on a per channel basis. 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 output reference buffer) adds embedded functionality to reduce 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. The ADC automatically switches through each selected channel. Further digital processing functions include offset and gain calibration registers, configurable on a per channel basis.
The device operates with a 5 V AVDD1 . AVSS supply, or with ±2.5 V AVDD1/AVSS, and 2.5 V to 5 V AVDD2 and IOVDD supplies. The specified operating temperature range is .40°C to +105°C. The AD7175-8 is available in a 40-lead LFCSP package.
APPLICATIONS
- Process control: PLC/DCS modules
Temperature and pressure measurement - Medical and scientific multichannel instrumentation
- Chromatography
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AD7175-8
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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 |
|---|---|---|---|
| AD7175-8BCPZ |
40-Lead LFCSP (6mm x 6mm w/ EP)
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| AD7175-8BCPZ-RL |
40-Lead LFCSP (6mm x 6mm w/ EP)
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| AD7175-8BCPZ-RL7 |
40-Lead LFCSP (6mm x 6mm w/ EP)
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- AD7175-8BCPZ
- Pin/Package Drawing
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40-Lead LFCSP (6mm x 6mm w/ EP)
- 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
- AD7175-8BCPZ-RL
- Pin/Package Drawing
-
40-Lead LFCSP (6mm x 6mm w/ EP)
- Documentation
-
HTML
Material Declaration
-
HTML
Reliablity Data
- CAD Symbols, Footprints, and 3D Models
-
Ultra Librarian
-
SamacSys
- AD7175-8BCPZ-RL7
- Pin/Package Drawing
-
40-Lead LFCSP (6mm x 6mm w/ EP)
- Documentation
-
HTML
Material Declaration
-
HTML
Reliablity Data
- CAD Symbols, Footprints, and 3D Models
-
Ultra Librarian
-
SamacSys
Software & Part Ecosystem
Device Drivers
Mbed Support
Mbed is an open source, development environment for ARM microcontrollers.
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Request a Driver/SoftwareEvaluation Kits 1
EVAL-AD7175-8
AD7175-8 Evaluation Board
Product Detail
The AD7175-8 evaluation software fully configures the AD7175-8 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 AD7175-8 are available in the product data sheet, which should be consulted in conjunction with user guide UG-901 when working with the evaluation board. Full details for the SDP-B controller board are available on the Analog Devices website.
Resources
Evaluation Kits1
Tools & Simulations 3
Virtual Eval - BETA
IBIS Model 1
IBIS Model
Signal Chain Designer - BETA
