Overview
The AD7175-8BCPZ-RL7, manufactured by Analog Devices Inc., is a low noise, fast settling, multiplexed, 8-/16-channel (fully/pseudo differential) Σ-Δ analog-to-digital converter (ADC) designed for low bandwidth inputs. This ADC is highly configurable, allowing users to set up individual configurations for each analog input channel. It features integrated true rail-to-rail buffers on the analog inputs and external reference inputs, making it easy to drive high impedance inputs. The device is particularly suited for applications requiring high accuracy and low power consumption.
Key Specifications
| Parameter | Specification |
|---|---|
| Number of Channels | 8 fully differential or 16 single-ended |
| Maximum Channel Scan Rate | 50 kSPS (20 µs) for fully settled data |
| Output Data Rates | 5 SPS to 250 kSPS |
| Resolution | 24-bit |
| Internal Reference | 2.5 V low drift (2 ppm/°C) band gap internal reference |
| Power Supplies | AVDD1 (5 V or ±2.5 V), AVDD2 (2.5 V to 5.5 V), IOVDD (2.5 V to 5.5 V) |
| Operating Temperature Range | -40°C to +105°C |
| Package Type | 40-lead LFCSP (6mm x 6mm w/ EP) |
| Communication Interface | SPI or I²C serial port |
Key Features
- Integrated true rail-to-rail buffers on the analog inputs and external reference inputs
- Per channel configurability for buffers, gain and offset correction, filter type, output data rate, and reference source selection
- Digital filter allowing simultaneous 50 Hz and 60 Hz rejection at a 27.27 SPS output data rate
- Fast scanning of analog input channels using the internal multiplexer or an external multiplexer with automatic control from the GPIOs
- High resolution at lower speeds in either channel scanning or ADC per channel applications
- Precision 2.5 V low drift (2 ppm/°C) band gap internal reference with output reference buffer
- Offset and gain calibration registers configurable on a per channel basis
Applications
The AD7175-8BCPZ-RL7 is suitable for a variety of applications requiring high accuracy and low power consumption, such as:
- Industrial automation and control systems
- Medical devices and diagnostic equipment
- Test and measurement instruments
- High-resolution data acquisition systems
- Low-power, high-accuracy sensor interfaces
Q & A
- What is the maximum channel scan rate of the AD7175-8BCPZ-RL7?
The maximum channel scan rate is 50 kSPS (20 µs) for fully settled data.
- What are the output data rates of the AD7175-8BCPZ-RL7?
The output data rates range from 5 SPS to 250 kSPS.
- What type of internal reference does the AD7175-8BCPZ-RL7 have?
The device features a 2.5 V low drift (2 ppm/°C) band gap internal reference with an output reference buffer.
- What are the power supply options for the AD7175-8BCPZ-RL7?
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.
- What is the operating temperature range of the AD7175-8BCPZ-RL7?
The specified operating temperature range is -40°C to +105°C.
- What package type is the AD7175-8BCPZ-RL7 available in?
The device is available in a 40-lead LFCSP package.
- What communication interfaces does the AD7175-8BCPZ-RL7 support?
The device supports communication over SPI or I²C serial ports.
- What are the key features of the integrated true rail-to-rail buffers?
The integrated true rail-to-rail buffers on the analog inputs and external reference inputs provide easy drive for high impedance inputs.
- Can the AD7175-8BCPZ-RL7 perform simultaneous 50 Hz and 60 Hz rejection?
Yes, the digital filter allows simultaneous 50 Hz and 60 Hz rejection at a 27.27 SPS output data rate.
- Is the AD7175-8BCPZ-RL7 suitable for high-resolution applications?
Yes, the device is suitable for high-resolution applications requiring a highly integrated solution to save PCB area.
