Overview
The AD7710SQ, produced by Analog Devices Inc., is a comprehensive analog front end designed for low frequency measurement applications. This device is capable of accepting low-level signals directly from strain gages or transducers and converting them into a serial digital word. It employs a sigma-delta conversion technique to achieve up to 24 bits of no missing codes performance, ensuring high accuracy and reliability.
The AD7710SQ features a proprietary programmable gain front end based around an analog modulator, and the modulator output is processed by an on-chip digital filter. The device includes two differential analog inputs and a differential reference input, allowing for flexible configuration in single or dual-channel systems.
It is ideal for use in smart, microcontroller-based systems, with input channel selection, gain settings, and signal polarity configurable via a bidirectional serial port. The device also includes self-calibration, system calibration, and background calibration options, enhancing its precision and usability.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | Up to 24 bits |
| Input Type | Two differential analog inputs, differential reference input |
| Conversion Technique | Sigma-delta |
| Accuracy | ±0.0015% |
| Dynamic Range | True 23-bit dynamic range |
| Power Supply | Single supply (with VSS tied to AGND) or dual supply (with VSS negative) |
| Input Signal Range | More positive than -30 mV (single supply), down to -VREF (dual supply) |
| Package Options | 24-lead PDIP, 24-lead CerDIP (Narrow 0.3 Inch), 24-lead SOIC (Wide) |
| Power Consumption | Typical standby power: 7 mW |
| Operating Temperature | -55°C to +125°C |
Key Features
- Programmable gain front end for direct connection to strain gages or transducers.
- On-chip digital filter with programmable cutoff and settling time.
- Software configurable input channel selection, gain settings, and signal polarity via bidirectional serial port.
- Self-calibration, system calibration, and background calibration options.
- Ability to read and write on-chip calibration registers.
- Low power dissipation due to CMOS construction.
- Software programmable power-down mode for reduced standby power consumption.
Applications
- Low frequency measurement applications.
- Smart, microcontroller-based systems.
- Strain gage and transducer interfaces.
- Industrial automation and control systems.
- Medical devices requiring precise analog-to-digital conversion.
Q & A
- What is the resolution of the AD7710SQ?
The AD7710SQ has a resolution of up to 24 bits.
- What type of conversion technique does the AD7710SQ use?
The AD7710SQ employs a sigma-delta conversion technique.
- How many differential analog inputs does the AD7710SQ have?
The AD7710SQ has two differential analog inputs and a differential reference input.
- What is the typical standby power consumption of the AD7710SQ?
The typical standby power consumption is 7 mW.
- Can the AD7710SQ be operated from a single supply?
- What are the package options available for the AD7710SQ?
The AD7710SQ is available in 24-lead PDIP, 24-lead CerDIP (Narrow 0.3 Inch), and 24-lead SOIC (Wide) packages.
- Does the AD7710SQ support calibration options?
- Can the user configure the input channel selection and gain settings?
- What is the operating temperature range of the AD7710SQ?
The operating temperature range is -55°C to +125°C.
- Is the AD7710SQ suitable for use in microcontroller-based systems?
