Overview
The AD4112BCPZ from Analog Devices Inc. is a 24-bit, sigma-delta (Σ-Δ) analog-to-digital converter (ADC) designed for high precision and low noise applications. This ADC integrates an analog front end (AFE) for fully differential or single-ended, high impedance inputs, supporting both voltage and current inputs. The device is optimized for various industrial and measurement applications, offering a high degree of accuracy and flexibility through its advanced signal conditioning blocks and digital filter settings.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Number of Bits | 24 | |
| Number of Inputs | 4, 8 | |
| Input Type | Differential, Single Ended | |
| Input Voltage Range | ±10 V | |
| Input Current Range | 0 mA to 20 mA | |
| Sampling Rate | 6.21 kSPS (161 µs) | |
| Data Interface | Serial, SPI, QSPI, MICROWIRE, DSP compatible | |
| Reference Type | Internal (2.5 V), External | |
| Supply Voltage (Analog) | 3.0 V to 5.5 V | |
| Supply Voltage (Digital) | 2 V to 5.5 V | |
| Operating Temperature | -40°C to +105°C | |
| Package | 40-Lead LFCSP (6mm x 6mm w/ EP) |
Key Features
- Internal Oscillator and Temperature Sensor
- MUX-S/H-ADC configuration and Sigma-Delta Architecture
- Embedded 2.5 V, low drift (5 ppm/°C) band gap internal reference with output reference buffer
- Flexible digital filter settings, including simultaneous 50 Hz and 60 Hz rejection
- Automatic channel sequencer for switching through enabled channels
- Proprietary iPassives™ technology for high precision performance
- Single power supply operation, suitable for galvanically isolated applications
- On-chip overvoltage and overcurrent protection for input channels
Applications
- Communication
- Industrial control
- Measuring instruments
- Consumer electronics
- Acquisition systems
- Medical instruments
- Audio processing
- Automotive electronics
- Process control (PLC and DCS modules)
- Instrumentation and measurement
Q & A
- What is the resolution of the AD4112BCPZ ADC?
The AD4112BCPZ is a 24-bit analog-to-digital converter.
- What types of inputs does the AD4112BCPZ support?
The AD4112BCPZ supports both differential and single-ended voltage inputs, as well as current inputs from 0 mA to 20 mA.
- What is the maximum sampling rate of the AD4112BCPZ?
The maximum sampling rate is 6.21 kSPS (161 µs) for fully settled data.
- What data interfaces are supported by the AD4112BCPZ?
The device supports serial, SPI, QSPI, MICROWIRE, and DSP compatible interfaces.
- What is the operating temperature range of the AD4112BCPZ?
The operating temperature range is -40°C to +105°C.
- What is the package type of the AD4112BCPZ?
The device is housed in a 40-Lead LFCSP (6mm x 6mm w/ EP) package.
- Does the AD4112BCPZ have built-in overvoltage and overcurrent protection?
Yes, the AD4112BCPZ has on-chip overvoltage and overcurrent protection for input channels.
- What is the purpose of the iPassives™ technology in the AD4112BCPZ?
The iPassives™ technology enhances the precision performance of the ADC by integrating advanced passive components.
- Can the AD4112BCPZ be used in galvanically isolated applications?
Yes, the AD4112BCPZ operates with a single power supply, making it suitable for galvanically isolated applications.
- What software tools are available for evaluating the AD4112BCPZ?
The AD411X Eval+ evaluation software is available for configuring the device and performing performance analysis.
