Overview
The AD7177-2BRUZ, produced by Analog Devices Inc., is a 32-bit, low noise, fast settling, multiplexed Sigma-Delta analog-to-digital converter (ADC) designed for low bandwidth inputs. This device is particularly suited for applications requiring high precision and flexibility in signal conditioning. It features integrated true rail-to-rail analog input buffers, an internal 2.5 V low drift reference, and advanced digital filtering capabilities. The AD7177-2 allows for user-configurable input channels, supporting both fully differential and single-ended configurations, making it versatile for various measurement tasks.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 32 bits |
| Maximum Channel Scan Rate | 10 kSPS (100 µs) |
| Output Data Rates | 5 SPS to 10 kSPS |
| Analog Input Channels | 2 fully differential or 4 single-ended channels |
| Internal Reference | 2.5 V, ±2 ppm/°C drift |
| Power Supply | AVDD1 - AVSS = 5 V, AVDD2 = IOVDD = 2.5 V to 5 V |
| Operating Temperature Range | −40°C to +105°C |
| Package | 24-Lead TSSOP |
| Digital Interface | SPI, QSPI, MICROWIRE, and DSP compatible |
Key Features
- Integrated true rail-to-rail analog input buffers and external reference inputs for easy drive of high impedance inputs.
- User-configurable input channels on a per channel basis.
- Precision 2.5 V low drift internal reference with output reference buffer.
- Digital filter allowing simultaneous 50 Hz and 60 Hz rejection.
- Offset and gain calibration registers configurable on a per channel basis.
- Support for internal or external clock.
- Advanced digital processing functions including configurable filters and calibration registers.
Applications
- Process control: PLC/DCS modules.
- Temperature and pressure measurement.
- Medical and scientific multichannel instrumentation.
- Chromatography.
Q & A
- What is the resolution of the AD7177-2 ADC?
The AD7177-2 has a resolution of 32 bits. - What is the maximum channel scan rate of the AD7177-2?
The maximum channel scan rate is 10 kSPS (100 µs) for fully settled data. - What types of analog input channels does the AD7177-2 support?
The AD7177-2 supports 2 fully differential or 4 single-ended analog input channels. - What is the internal reference voltage and its drift?
The internal reference voltage is 2.5 V with a drift of ±2 ppm/°C. - What are the power supply requirements for the AD7177-2?
The device operates with AVDD1 - AVSS = 5 V, and AVDD2 = IOVDD = 2.5 V to 5 V. - What is the operating temperature range of the AD7177-2?
The operating temperature range is −40°C to +105°C. - What types of digital interfaces does the AD7177-2 support?
The AD7177-2 supports SPI, QSPI, MICROWIRE, and DSP compatible interfaces. - What is the package type of the AD7177-2?
The AD7177-2 is available in a 24-Lead TSSOP package. - Can the AD7177-2 reject both 50 Hz and 60 Hz noise?
Yes, the digital filter allows simultaneous 50 Hz and 60 Hz rejection at a 27.27 SPS output data rate. - Is there an evaluation kit available for the AD7177-2?
Yes, the EVAL-AD7177-2SDZ evaluation kit is available for evaluating the AD7177-2 device.
