Overview
The AD7731BRU-REEL7, produced by Analog Devices Inc., is a high-performance, 24-bit sigma-delta analog-to-digital converter (ADC) designed for process control and industrial applications. This device features a proprietary programmable gain front end, allowing it to accept a wide range of input signal levels directly from transducers. It operates from a single +5 V supply and is available in a 24-lead TSSOP package.
Key Specifications
| Parameter | Value | Conditions/Comments |
|---|---|---|
| Resolution | 24 bits | - |
| Output Rate | Up to 6.4 kHz | - |
| Input Ranges | Unipolar: 0 to +20 mV, +40 mV, +80 mV, +160 mV, +320 mV, +640 mV, +1.28 V Bipolar: ±20 mV, ±40 mV, ±80 mV, ±160 mV, ±320 mV, ±640 mV, ±1.28 V | - |
| Peak-to-Peak Resolution | 16 bits at 800 Hz output rate | - |
| Settling Time | 1 ms | - |
| Supply Voltage | +5 V | - |
| Package | 24-lead TSSOP | - |
| Operating Temperature | −40°C to +85°C | - |
| Interface | Serial (SPI compatible) | - |
Key Features
- 24-bit sigma-delta ADC with high resolution and low noise.
- Programmable gain front end for various input signal ranges.
- Three buffered differential programmable gain analog inputs (configurable as five pseudo-differential inputs).
- Differential reference input.
- Self-calibration and system calibration options.
- Low offset drift (< 5 nV/°C) and gain drift (< 2 ppm/°C).
- Serial interface compatible with microcontrollers and digital signal processors.
Applications
The AD7731BRU-REEL7 is suitable for a variety of industrial and process control applications, including:
- Industrial automation and control systems.
- Process monitoring and control.
- Transducer interface applications.
- High-precision measurement systems.
Q & A
- What is the resolution of the AD7731BRU-REEL7?
The AD7731BRU-REEL7 has a 24-bit resolution.
- What are the input ranges supported by the AD7731BRU-REEL7?
The device supports both unipolar and bipolar input ranges, including 0 to +20 mV, +40 mV, +80 mV, +160 mV, +320 mV, +640 mV, and +1.28 V for unipolar, and ±20 mV, ±40 mV, ±80 mV, ±160 mV, ±320 mV, ±640 mV, and ±1.28 V for bipolar.
- What is the maximum output rate of the AD7731BRU-REEL7?
The maximum output rate is up to 6.4 kHz.
- What is the settling time of the AD7731BRU-REEL7?
The settling time is 1 ms.
- What type of package is the AD7731BRU-REEL7 available in?
The device is available in a 24-lead TSSOP package.
- What is the operating temperature range of the AD7731BRU-REEL7?
The operating temperature range is −40°C to +85°C.
- Does the AD7731BRU-REEL7 support self-calibration?
- What is the interface type of the AD7731BRU-REEL7?
The device has a serial interface compatible with microcontrollers and digital signal processors.
- What are the key applications of the AD7731BRU-REEL7?
The device is suitable for industrial automation, process monitoring and control, transducer interface applications, and high-precision measurement systems.
- What is the supply voltage requirement for the AD7731BRU-REEL7?
The device operates from a single +5 V supply.
