Overview
The AD7176-2BRUZ is a 24-bit, high-resolution, sigma-delta analog-to-digital converter (ADC) designed by Analog Devices Inc. This device is optimized for low-bandwidth input signals and offers high accuracy and fast settling times. It features a user-configurable input structure, allowing for two fully differential or four pseudo-differential inputs via an integrated crosspoint multiplexer. The AD7176-2 also includes an internal precision 2.5 V reference with low drift, making it suitable for a variety of precision measurement applications.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Resolution | 24 bits | |||
| Sampling Rate | 250 kSPS | |||
| Power Supply Voltage (AVDD1 - AVSS) | 4.5 | 5.5 | V | |
| Power Supply Voltage (AVDD2 - AVSS) | 2 | 5.5 | V | |
| Power Supply Voltage (IOVDD - DGND) | 2 | 5.5 | V | |
| Operating Temperature Range | -40 | 105 | °C | |
| Package Type | 24-Lead TSSOP | |||
| Internal Reference Voltage | 2.5 V | |||
| Internal Reference Drift | 2 ppm/°C | |||
| Full Operating Mode Current (AVDD1) | 1.5 | 1.8 | 2.1 | mA |
| Full Operating Mode Current (AVDD2) | 4.3 | 4.9 | 5.1 | mA |
| Full Operating Mode Current (IOVDD) | 2 | 2.3 | 2.6 | mA |
Key Features
- User-configurable input channels: two fully differential or four pseudo-differential inputs via an integrated crosspoint multiplexer.
- Internal precision 2.5 V reference with low drift (2 ppm/°C).
- Internal oscillator, external crystal, or external clock options.
- Single supply or optional split supply configurations.
- 3- or 4-wire serial digital interface (SPI, QSPI, MICROWIRE, and DSP compatible) with CRC error checking.
- GPIO pins for controlling external multiplexers.
- High accuracy and fast settling times.
Applications
- Process control: PLC/DCS modules.
- Temperature and pressure measurement.
- Medical and scientific multichannel instrumentation.
- Chromatography.
Q & A
- What is the resolution of the AD7176-2BRUZ ADC?
The AD7176-2BRUZ has a resolution of 24 bits. - What is the maximum sampling rate of the AD7176-2BRUZ?
The maximum sampling rate is 250 kSPS. - What are the power supply voltage ranges for the AD7176-2BRUZ?
The power supply voltage ranges are 4.5 V to 5.5 V for AVDD1 - AVSS, 2 V to 5.5 V for AVDD2 - AVSS, and 2 V to 5.5 V for IOVDD - DGND. - What is the operating temperature range of the AD7176-2BRUZ?
The operating temperature range is -40°C to +105°C. - What type of package does the AD7176-2BRUZ come in?
The AD7176-2BRUZ comes in a 24-Lead TSSOP package. - Does the AD7176-2BRUZ have an internal reference voltage?
Yes, it has an internal precision 2.5 V reference with a drift of 2 ppm/°C. - What are the current consumption levels for the AD7176-2BRUZ in full operating mode?
The current consumption levels are 1.5 mA to 2.1 mA for AVDD1, 4.3 mA to 5.1 mA for AVDD2, and 2 mA to 2.6 mA for IOVDD. - What types of serial interfaces does the AD7176-2BRUZ support?
The AD7176-2BRUZ supports 3- or 4-wire serial digital interfaces including SPI, QSPI, MICROWIRE, and DSP with CRC error checking. - Can the AD7176-2BRUZ control external multiplexers?
Yes, it can control external multiplexers via its GPIO pins. - What are some typical applications of the AD7176-2BRUZ?
Typical applications include process control, temperature and pressure measurement, medical and scientific instrumentation, and chromatography.
