Overview
The AD7712SQ, produced by Analog Devices Inc., is a comprehensive analog front end designed for low-frequency measurement applications. This device is particularly suited for use in smart, microcontroller-based systems. It features two analog input channels, allowing it to accept both low-level signals directly from transducers and high-level signals. The AD7712SQ is known for its high accuracy, low power consumption, and advanced calibration capabilities, making it an ideal choice for various industrial and process control applications.
Key Specifications
| Parameter | Value | Unit | Conditions/Comments |
|---|---|---|---|
| No Missing Codes | 24 Bits min | - | Guaranteed by Design. For Filter Notches ≤ 60 Hz |
| Static Performance - Nonlinearity | ±0.0015% | - | - |
| Input Channels | 2 | - | High Level and Low Level Analog Input Channels |
| Programmable Gain | 1 to 128 | - | For Both Inputs |
| Filter Cutoffs | Programmable | - | Low-Pass Filter |
| Power Consumption | 25 mW typ (active), 100 µW typ (power-down) | - | - |
| Operating Temperature | -55°C to +125°C | - | - |
| Package Options | 24-lead DIP, 24-lead SOIC | - | - |
Key Features
- Charge Balancing ADC with 24 Bits resolution and no missing codes.
- High accuracy with ±0.0015% nonlinearity.
- Programmable gain for both inputs, ranging from 1 to 128.
- Differential input for low-level channel and high-level analog input accepting signals of ±4 VREF/GAIN.
- Low-pass filter with programmable filter cutoffs.
- Ability to read/write calibration coefficients.
- Bidirectional microcontroller serial interface.
- Internal/external reference option and single- or dual-supply operation.
- Low power consumption with a power-down mode.
- Self-calibration, system calibration, and background calibration options.
Applications
The AD7712SQ is ideal for various applications, including:
- Process Control: Suitable for precise measurement and control in industrial processes.
- Smart Transmitters: Used in intelligent transmitters for accurate signal conversion and transmission.
- Portable Industrial Instruments: Ideal for handheld or portable devices requiring high accuracy and low power consumption.
- Microcontroller-Based Systems: Integrates well with microcontrollers and DSP processors for advanced signal processing.
Q & A
- What is the resolution of the AD7712SQ?
The AD7712SQ has a resolution of 24 bits with no missing codes. - What is the accuracy of the AD7712SQ?
The device has an accuracy of ±0.0015% nonlinearity. - How many analog input channels does the AD7712SQ have?
The AD7712SQ has two analog input channels. - What is the range of programmable gain for the AD7712SQ?
The programmable gain ranges from 1 to 128 for both inputs. - Does the AD7712SQ support internal and external references?
Yes, the AD7712SQ supports both internal and external reference options. - What are the power consumption characteristics of the AD7712SQ?
The device consumes 25 mW typical in active mode and 100 µW typical in power-down mode. - What are the package options available for the AD7712SQ?
The AD7712SQ is available in 24-lead DIP and 24-lead SOIC packages. - Can the AD7712SQ be used in microcontroller-based systems?
Yes, the AD7712SQ is designed to integrate well with microcontrollers and DSP processors. - Does the AD7712SQ support calibration?
Yes, the AD7712SQ supports self-calibration, system calibration, and background calibration options. - What is the operating temperature range of the AD7712SQ?
The operating temperature range is -55°C to +125°C.
