- 24-bit ADC with integrated analog front end
- Up to 6.2 kSPS per channel (161 µs per channel)
- 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 and 8 single-ended
- Overrange up to ±20 V
- ≥1 MΩ impedance
- ±0.06% accuracy at 25°C
- 0 mA to 20 mA inputs, 4 single-ended
- Overrange up to −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
- Internal or external clock
- Power supplies
- AVDD = 3.0 V to 5.5 V
- IOVDD = 2 V to 5.5 V, 3.2 mA
- 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
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 6.2 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 performace 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.
- Process control
- PLC and DCS modules
The EVAL-AD4112SDZ is a full featured evaluation board that can be used to evaluate all the features of the AD4112. The AD4112 is a 24-bit, 31.25 kSPS analog-to-digital converter (ADC) with a ±10 V input voltage range (eight single-ended channels or four fully differential channels) and four current channels operating from 0 mA to 20 mA. All channels have on-board overvoltage and overcurrent protection.
The EVAL-AD4112SDZ board includes voltage references and power and data insulation, and can be connected to the Analog Devices, Inc., SDP-B system demonstration platform (EVAL-SDP-CB1Z). The SDP-B board provides connection to a PC via a universal serial bus (USB) port and can provide power for the EVAL-AD4112SDZ board from the PC USB port.
The AD411X Eval+ evaluation software configures the AD4112 device functionality and provides dc time domain analysis in the form of waveform graphs, histograms, and associated noise analysis for ADC performance evaluation.
Full specifications for the AD4112 are available in the product data sheet, which must be consulted in conjunction with this user guide when working with the EVAL-AD4112SDZ.
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.
価格は1個当たりの米ドルで、米国内における販売価格（FOB）で表示されておりますので、予算のためにのみご使用いただけます。 また、その価格は変更 されることがあります。米国以外のお客様への価格は、輸送費、各国の税金、手数料、為替レートにより決定されます。価格・納期等の詳細情報については、弊社正規販売代理店または担当営業にお問い合わせください。なお、 評価用ボードおよび評価用キットの表示価格は1個構成としての価格です。