Overview
The AD7713AN is a 24-bit sigma-delta analog-to-digital converter (ADC) produced by Analog Devices Inc. This device is designed as a complete analog front end for low-frequency measurement applications. It is particularly suited for use in loop-powered systems, smart transmitters, RTD transducers, and various industrial instruments. The AD7713AN operates on a single supply voltage and features low power consumption, making it ideal for battery-powered and energy-efficient systems.
Key Specifications
| Parameter | Value |
|---|---|
| Number of Bits | 24 |
| Input Type | Differential, Single-Ended |
| Architecture | Sigma-Delta |
| Sampling Rate | 205 samples per second |
| Voltage - Supply, Analog | 5 V to 10 V |
| Voltage - Supply, Digital | 5 V |
| Operating Temperature | -40°C to +85°C |
| Package | 24-DIP (0.300", 7.62mm), 24-lead SOIC |
| Power Consumption | 3.5 mW typical, 150 µW in power-down mode |
| Accuracy | ±0.0015% |
Key Features
- Programmable Gain Channels: Allows direct acceptance of input signals from transducers, reducing the need for additional signal conditioning.
- On-Chip Current Sources: Provides excitation for 3-wire and 4-wire RTD configurations.
- Self-Calibration: Eliminates zero-scale and full-scale errors, ensuring high accuracy.
- Low Power Consumption: Consumes less than 1 mA in total supply current, ideal for loop-powered systems.
- Flexible Digital Interface: Bidirectional serial interface compatible with microcontrollers and DSP processors.
- Programmable Filter Cutoff: Allows adjustment of the filter cutoff and settling time via the on-chip control register.
Applications
- Loop Powered (Smart) Transmitters: Ideal for systems where power is limited.
- RTD Transducers: Supports 3-wire and 4-wire RTD configurations.
- Process Control: Suitable for various industrial control applications.
- Portable Industrial Instruments: Low power consumption makes it suitable for battery-powered devices.
Q & A
- What is the resolution of the AD7713AN ADC?
The AD7713AN has a 24-bit resolution. - What are the operating temperature ranges for the AD7713AN?
The operating temperature range is -40°C to +85°C. - What is the typical power consumption of the AD7713AN?
The typical power consumption is 3.5 mW, with a power-down mode of 150 µW. - Does the AD7713AN support RTD configurations?
Yes, it supports 3-wire and 4-wire RTD configurations with on-chip current sources. - What is the sampling rate of the AD7713AN?
The sampling rate is 205 samples per second. - What types of input does the AD7713AN support?
The AD7713AN supports differential and single-ended analog inputs. - Is the AD7713AN suitable for microcontroller-based systems?
Yes, it is ideal for microcontroller or DSP processor applications with a bidirectional serial interface. - How accurate is the AD7713AN?
The AD7713AN has an accuracy of ±0.0015%. - What package options are available for the AD7713AN?
The AD7713AN is available in 24-DIP (0.300", 7.62mm) and 24-lead SOIC packages. - Does the AD7713AN have self-calibration capabilities?
Yes, it features self-calibration, system calibration, and background calibration options.
