Overview
The AD7731BRUZ-REEL, manufactured by Analog Devices Inc., is a high-performance, 24-bit sigma-delta analog-to-digital converter (ADC). This component is designed to serve as a complete analog front-end for various applications, particularly in process control. It features a proprietary programmable gain front end, allowing it to accept a wide range of input signal levels directly from transducers. The device operates from a single +5 V supply and is available in a 24-lead TSSOP package.
Key Specifications
| Parameter | Description | Value |
|---|---|---|
| Resolution | Bits | 24 |
| Output Rate | kHz | Up to 6.4 |
| Input Ranges | Unipolar/Bipolar | 0 to +20 mV, +40 mV, +80 mV, +160 mV, +320 mV, +640 mV, +1.28 V; ±20 mV, ±40 mV, ±80 mV, ±160 mV, ±320 mV, ±640 mV, ±1.28 V |
| Supply Voltage | V | +5 |
| Package Type | 24-lead TSSOP | |
| Operating Temperature | °C | -40 to +85 |
| Reference Input Voltage | V | +2.5 V or +5 V (depending on HIREF bit setting) |
| Serial Interface | Three-wire SPI compatible |
Key Features
- Programmable Gain Front End: Allows the device to accept a wide range of input signal levels directly from transducers.
- High Resolution: Achieves up to 16 bits peak-to-peak resolution at an 800 Hz output rate.
- Flexible Input Configurations: Three buffered differential programmable gain analog inputs, configurable as five pseudo-differential inputs, and a differential reference input.
- Low Drift: Offset drift of less than 5 nV/°C and gain drift of less than 2 ppm/°C.
- Self-Calibration and System Calibration: Options for self-calibration and system calibration to ensure high accuracy.
- Fast Channel Switching: Can switch between channels with a 1 ms settling time.
Applications
- Process Control: Ideal for applications requiring high accuracy and flexibility in measuring analog signals from transducers.
- Industrial Automation: Suitable for use in industrial automation systems where precise analog-to-digital conversion is necessary.
- Medical Devices: Can be used in medical devices that require high-resolution ADCs for precise signal measurement.
- Test and Measurement Equipment: Useful in test and measurement equipment where high accuracy and flexibility in signal measurement are required.
Q & A
- What is the resolution of the AD7731BRUZ-REEL?
The AD7731BRUZ-REEL has a 24-bit resolution.
- What are the input ranges supported by the AD7731BRUZ-REEL?
The device supports both unipolar and bipolar input ranges, including 0 to +20 mV, +40 mV, +80 mV, +160 mV, +320 mV, +640 mV, +1.28 V; and ±20 mV, ±40 mV, ±80 mV, ±160 mV, ±320 mV, ±640 mV, ±1.28 V.
- What is the operating supply voltage of the AD7731BRUZ-REEL?
The device operates from a single +5 V supply.
- What type of package is the AD7731BRUZ-REEL available in?
The AD7731BRUZ-REEL is available in a 24-lead TSSOP package.
- What is the operating temperature range of the AD7731BRUZ-REEL?
The device operates over a temperature range of -40°C to +85°C.
- Does the AD7731BRUZ-REEL support self-calibration?
Yes, the device supports both self-calibration and system calibration options.
- How fast can the AD7731BRUZ-REEL switch between channels?
The device can switch between channels with a settling time of 1 ms.
- What is the peak-to-peak resolution achievable at an 800 Hz output rate?
The device achieves up to 16 bits peak-to-peak resolution at an 800 Hz output rate.
- Is the AD7731BRUZ-REEL compatible with microcontrollers and digital signal processors?
Yes, the serial interface of the AD7731BRUZ-REEL is compatible with microcontrollers and digital signal processors and can be configured for three-wire operation.
- What are the drift characteristics of the AD7731BRUZ-REEL?
The device has an offset drift of less than 5 nV/°C and a gain drift of less than 2 ppm/°C.
