Overview
The AD7176-2BRUZ-RL is a high-performance, 24-bit Sigma-Delta analog-to-digital converter (ADC) produced by Analog Devices Inc. This device is designed for low bandwidth input signals and offers fast settling times and high accuracy. It features an integrated crosspoint multiplexer, allowing the inputs to be configured as two fully differential or four pseudo differential inputs. The AD7176-2 also includes a precision, 2.5 V internal reference with low drift (2 ppm/°C), which enhances its functionality and reduces the need for external components. The device is housed in a 24-lead TSSOP package and operates over a temperature range of −40°C to +105°C.
Key Specifications
| Parameter | Value |
|---|---|
| Number of Bits | 24 |
| Sampling Rate | 5 SPS to 250 kSPS |
| Settling Time | 20 µs |
| Input Configuration | 2 fully differential or 4 pseudo differential |
| Internal Reference | 2.5 V, 2 ppm/°C drift |
| Power Supply | Single supply: 5 V AVDD1, 2 V to 5 V AVDD2 and IOVDD; Optional split supply: AVDD1 and AVSS ± 2.5 V |
| Current Consumption | 7.8 mA |
| Temperature Range | −40°C to +105°C |
| Package | 24-lead TSSOP |
| Digital Interface | SPI, QSPI, MICROWIRE, and DSP compatible |
Key Features
- Fast and flexible output rate from 5 SPS to 250 kSPS
- Fast settling time of 20 µs
- Channel scan data rate of 50 kSPS/channel
- High resolution with up to 22 noise-free bits at lower speeds
- Integrated crosspoint multiplexer for input configuration
- Precision, 2.5 V internal reference with low drift (2 ppm/°C)
- Internal oscillator, external crystal, or external clock options
- Support for SPI, QSPI, MICROWIRE, and DSP compatible digital interfaces
- CRC error checking and Schmitt trigger on SCLK
Applications
- Process control: PLC/DCS modules
- Temperature and pressure measurement
- Medical and scientific multichannel instrumentation
- Chromatography
Q & A
- What is the resolution of the AD7176-2 ADC?
The AD7176-2 is a 24-bit Sigma-Delta ADC, offering high resolution with up to 22 noise-free bits at lower speeds.
- What are the input configuration options for the AD7176-2?
The inputs can be configured as two fully differential or four pseudo differential inputs via the integrated crosspoint multiplexer.
- What is the settling time of the AD7176-2?
The settling time is 20 µs, which is particularly fast for high-resolution ADCs.
- What is the range of the sampling rate for the AD7176-2?
The sampling rate ranges from 5 SPS to 250 kSPS, providing flexibility in various applications.
- What type of digital interface does the AD7176-2 support?
The AD7176-2 supports SPI, QSPI, MICROWIRE, and DSP compatible digital interfaces.
- What is the temperature range for the AD7176-2?
The operating temperature range is −40°C to +105°C.
- What is the power supply requirement for the AD7176-2?
The device can operate on a single supply (5 V AVDD1, 2 V to 5 V AVDD2 and IOVDD) or an optional split supply (AVDD1 and AVSS ± 2.5 V).
- What is the current consumption of the AD7176-2?
The current consumption is approximately 7.8 mA.
- What package type is the AD7176-2 available in?
The AD7176-2 is housed in a 24-lead TSSOP package.
- What are some common applications of the AD7176-2?
Common applications include process control, temperature and pressure measurement, medical and scientific instrumentation, and chromatography.
- Is there an evaluation board available for the AD7176-2?
Yes, the EVAL-AD7176-2SDZ is a fully featured evaluation kit available for the AD7176-2.
