AD4112
Single Supply, 24-Bit, Sigma-Delta ADC with ±10 V and 0 mA to 20 mA Inputs
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New Content (1)
Overview
Features and Benefits
- Internal or external clock
- Tested for robustness per: IEC61000-4-2, IEC61000-4-3, IEC61000-4-4, IEC61000-4-5, IEC61000-4-6, CISPR 11
- 24-bit ADC with integrated analog front end
- Fast and flexible output rate: 1.25 SPS to 31.25 kSPS
- Channel scan data rate of 6.21 kSPS per channel (161 μs settling)
- 16 noise free bits at 1 kSPS per channel
- 85 dB rejection of 50 Hz and 60 Hz at 20 SPS per channel
- ±10 V inputs, 4 differential or 8 single-ended
- Pin absolute maximum rating ±50 V
- Absolute input pin voltage up to ±20 V
- ≥1 MΩ impedance
- ±0.06% accuracy at 25°C
- 0 mA to 20 mA inputs, 4 single-ended
- Pin absolute maximum rating ±50 mA
- Input range from −0.5 mA to +24 mA
- 60 Ω impedance
- ±0.08% accuracy at 25°C
- On-chip 2.5 V reference
- ±0.12% accuracy at 25°C, ±5 ppm/°C (typical) drift
- Power supplies
- AVDD = 3.0 V to 5.5 V
- IOVDD = 2 V to 5.5 V
- Total IDD = 3.9 mA
- Temperature range: −40°C to +105°C
- 3-wire or 4-wire serial digital interface (Schmitt trigger on SCLK)
- SPI, QSPI, MICROWIRE, and DSP compatible
Product Details
The AD4112 is a low power, low noise, 24-bit, sigma-delta (Σ-Δ) analog-to-digital converter (ADC) that integrates an analog front end (AFE) for fully differential or single-ended, high impedance (≥1 MΩ) bipolar, ±10 V voltage inputs, and 0 mA to 20 mA current inputs.
The AD4112 also integrates key analog and digital signal conditioning blocks to configure eight individual setups for each analog input channel in use. The AD4112 features a maximum channel scan rate of 6.21 kSPS (161 µs) for fully settled data.
The embedded 2.5 V, low drift (5 ppm/°C), band gap internal reference (with output reference buffer) reduces the external component count.
The digital filter allows flexible settings, including simultaneous 50 Hz and 60 Hz rejection at a 27.27 SPS output data rate. The user can select between the different filter settings depending on the demands of each channel in the application. The automatic channel sequencer enables the ADC to switch through each enabled channel.
The precision performance of the AD4112 is achieved by integrating the proprietary iPassives™ technology from Analog Devices, Inc. The AD4112 is factory calibrated to achieve a high degree of specified accuracy.
The AD4112 operates with a single power supply, making it easy to use in galvanically isolated applications. The specified operating temperature range is −40°C to +105°C. The AD4112 is housed in a 40-lead, 6 mm × 6 mm LFCSP package.
APPLICATIONS
- Process control
- PLC and DCS modules
- Instrumentation and measurement
Product Categories
Markets and Technologies
Product Lifecycle
Recommended for New Designs
This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.
Evaluation Kits (1)
Documentation & Resources
Software & Systems Requirements
Device Drivers
Mbed Support
EVAL-AD717x-AD411x-IIO Code
IIO firmware for the AD717x and AD411x family of devices.
WIKI
AD717x/411x Mbed IIO Application
This page gives an overview of using the ARM “Mbed” platform supported firmware example with Analog Devices AD717x/AD411x Evaluation boards and SDP-K1 controller board.
WIKI
Learn how to get started with Mbed
Mbed is an open source, development environment for ARM microcontrollers.
Tools & Simulations
IBIS Models
IBS
AD4112 IBIS Model
286.64 K
Design Tools
XLSX
AD4112 Filter Model
326.67 K
Design Resources
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 Number | Material Declaration | Reliability Data | Pin/Package Drawing | CAD Symbols, Footprints & 3D Models |
|---|---|---|---|---|
| AD4112BCPZ | Material Declaration | Reliability Data | 40-Lead LFCSP (6mm x 6mm w/ EP) | |
| AD4112BCPZ-RL7 | Material Declaration | Reliability Data | 40-Lead LFCSP (6mm x 6mm w/ EP) | |
| Wafer Fabrication Data |
Sample & Buy
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List Pricing
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Sampling
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Evaluation Boards
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Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.