Overview
The AD7713AR, produced by Analog Devices Inc., is a complete analog front end designed for low-frequency measurement applications. This device is particularly suited for use in smart, microcontroller-based systems and is known for its low power consumption and high accuracy. The AD7713AR features a 24-bit sigma-delta analog-to-digital converter (ADC) with no missing codes, ensuring a true 24-bit dynamic range. It includes on-chip self-calibration, which eliminates zero-scale and full-scale errors, and provides excellent temperature stability.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 24 bits |
| Accuracy | ±0.0015% |
| Supply Voltage | 5 V (AVDD and DVDD) |
| Supply Current | <1 mA |
| Power Consumption | 3.5 mW (typical), 150 µW (power-down mode) |
| Operating Temperature | –40°C to +85°C |
| Package Types | 24-lead PDIP, CERDIP, SOIC |
| Input Types | Two differential analog inputs, one single-ended high level analog input, differential reference input |
| RTD Excitation | On-chip current sources for 3-wire and 4-wire RTD configurations |
Key Features
- Bidirectional microcontroller serial interface for easy communication and control.
- Low power consumption with a typical power-down mode of 150 µW.
- Programmable gain front end allowing direct input from transducers without additional signal conditioning.
- On-chip self-calibration, system calibration, and background calibration options.
- High accuracy with no missing codes and excellent temperature stability.
- Support for 3-wire and 4-wire RTD configurations with on-chip current sources.
- Single-supply operation with AVDD and DVDD at 5 V.
Applications
- Loop-powered (smart) transmitters.
- RTD transducers.
- Process control systems.
- Portable industrial instruments.
- Microcontroller or DSP processor-based systems.
Q & A
- What is the resolution of the AD7713AR?
The AD7713AR has a resolution of 24 bits. - What is the typical power consumption of the AD7713AR?
The typical power consumption is 3.5 mW, and it reduces to 150 µW in power-down mode. - What types of input does the AD7713AR support?
The AD7713AR supports two differential analog inputs, one single-ended high level analog input, and a differential reference input. - Does the AD7713AR support RTD configurations?
Yes, it supports 3-wire and 4-wire RTD configurations with on-chip current sources. - What is the operating temperature range of the AD7713AR?
The operating temperature range is –40°C to +85°C. - What are the package types available for the AD7713AR?
The AD7713AR is available in 24-lead PDIP, CERDIP, and SOIC packages. - How accurate is the AD7713AR?
The AD7713AR has an accuracy of ±0.0015%. - Does the AD7713AR have self-calibration capabilities?
Yes, it includes on-chip self-calibration, system calibration, and background calibration options. - What is the supply voltage for the AD7713AR?
The supply voltage is 5 V (AVDD and DVDD). - Is the AD7713AR suitable for microcontroller-based systems?
Yes, it is ideal for use in microcontroller or DSP processor applications.
