Overview
The AD7710ARZ, produced by Analog Devices Inc., is a comprehensive analog front end designed for low-frequency measurement applications. This device accepts low-level signals directly from strain gages or transducers and outputs a serial digital word. It utilizes a sigma-delta conversion technique to achieve up to 24 bits of no missing codes performance. The AD7710ARZ features a programmable gain front end, two differential analog inputs, and a differential reference input, making it ideal for use in smart, microcontroller-based systems. It supports single or dual-supply operation and includes self-calibration, system calibration, and background calibration options.
Key Specifications
| Parameter | Value |
|---|---|
| Number of Bits | 24 |
| Sampling Rate | 1.028 ksps |
| Polarity | Bipolar, Unipolar |
| Interface | SPI, Serial |
| Number of A/D Converters | 1 |
| Minimum Dual Supply Voltage | 4.75 V |
| Minimum Supply Voltage | 4.75 V |
| Supply Voltage | 5 V |
| Package Type | 24-Lead SOIC (Wide) |
| Temperature Range | -40°C to +85°C |
| Power Consumption (Typical) | 25 mW (active), 7 mW (power-down mode) |
Key Features
- Programmable gain front end to accept input signals directly from strain gages or transducers, reducing the need for additional signal conditioning.
- Two differential analog inputs and a differential reference input, allowing for single or dual-channel operation.
- On-chip digital filter with programmable filter cutoff and settling time.
- Self-calibration, system calibration, and background calibration options to ensure high accuracy and eliminate temperature drift effects.
- Ability to read and write on-chip calibration registers, providing greater control over the calibration procedure.
- Low power dissipation due to CMOS construction and a software-programmable power-down mode.
- Bidirectional serial interface for configuring input channel selection, gain settings, and signal polarity in software.
Applications
- Weigh scales
- Thermocouples
- Process control
- Smart transmitters
- Chromatography
The AD7710ARZ is versatile and can be used in various applications requiring precise low-frequency signal measurement and conditioning.
Q & A
- What is the primary function of the AD7710ARZ?
The AD7710ARZ is a complete analog front end for low-frequency measurement applications, accepting low-level signals from strain gages or transducers and outputting a serial digital word.
- What is the resolution of the AD7710ARZ?
The AD7710ARZ has a resolution of up to 24 bits with no missing codes performance.
- What types of calibration does the AD7710ARZ support?
The AD7710ARZ supports self-calibration, system calibration, and background calibration options.
- How can the AD7710ARZ be powered?
The AD7710ARZ can be operated from a single supply or a dual supply, allowing it to convert signals down to -VREF on its inputs.
- What is the typical power consumption of the AD7710ARZ?
The typical power consumption is 25 mW in active mode and 7 mW in power-down mode.
- What interface does the AD7710ARZ use for configuration?
The AD7710ARZ uses a bidirectional serial interface (SPI) for configuring input channel selection, gain settings, and signal polarity.
- What are the common applications of the AD7710ARZ?
The AD7710ARZ is commonly used in weigh scales, thermocouples, process control, smart transmitters, and chromatography.
- What is the temperature range of the AD7710ARZ?
The AD7710ARZ operates within a temperature range of -40°C to +85°C.
- What package types are available for the AD7710ARZ?
The AD7710ARZ is available in 24-lead SOIC (Wide) and 24-lead DIP packages.
- Does the AD7710ARZ support multiple input channels?
Yes, the AD7710ARZ features two differential analog inputs, allowing for single or dual-channel operation.
