Overview
The AD7711ARZ-REEL7, produced by Analog Devices Inc., is a highly integrated, 24-bit sigma-delta analog-to-digital converter (ADC) designed for low-frequency measurement applications. This device serves as a complete analog front end, capable of accepting low-level signals directly from transducers and outputting a serial digital word. It is particularly suited for use in smart, microcontroller-based systems due to its software-programmable features and low power consumption.
Key Specifications
| Specification | Value |
|---|---|
| Resolution | 24 bits |
| Conversion Technique | Sigma-Delta |
| Input Channels | 1 differential, 1 single-ended, 1 differential reference |
| Supply Voltage | Single supply (with VSS tied to AGND) or dual supply |
| Input Signal Range | Down to -VREF with negative VSS |
| RTD Excitation Currents | Two current sources for 3-wire and 4-wire RTD configurations |
| Package Type | 24-lead SOIC (Wide) |
| Power Consumption | Typical standby power: 7 mW |
| Calibration Options | Self-measurement, system, and background calibration |
Key Features
- Proprietary programmable gain front end and on-chip digital filter with programmable notch frequency.
- Software-programmable gain settings, signal polarity, input channel selection, and RTD current control via a bidirectional serial port.
- Low power dissipation due to CMOS construction.
- Software-programmable power-down mode to reduce standby power consumption.
- On-chip calibration registers for precise measurement.
Applications
The AD7711ARZ-REEL7 is ideal for various low-frequency measurement applications, including:
- Temperature measurement using RTDs.
- Industrial process control systems.
- Smart sensor systems.
- Microcontroller-based measurement systems.
- High-precision data acquisition systems.
Q & A
- What is the resolution of the AD7711ARZ-REEL7?
The AD7711ARZ-REEL7 has a resolution of 24 bits. - What conversion technique does the AD7711ARZ-REEL7 use?
The AD7711ARZ-REEL7 uses a sigma-delta conversion technique. - How many input channels does the AD7711ARZ-REEL7 have?
The AD7711ARZ-REEL7 has one differential analog input, one single-ended analog input, and one differential reference input. - What are the supply voltage options for the AD7711ARZ-REEL7?
The AD7711ARZ-REEL7 can operate on a single supply (with VSS tied to AGND) or a dual supply. - What is the input signal range of the AD7711ARZ-REEL7?
The input signal range can go down to -VREF with a negative VSS. - Does the AD7711ARZ-REEL7 support RTD measurements?
Yes, the AD7711ARZ-REEL7 provides two current sources for 3-wire and 4-wire RTD configurations. - What is the package type of the AD7711ARZ-REEL7?
The AD7711ARZ-REEL7 is available in a 24-lead SOIC (Wide) package. - How much power does the AD7711ARZ-REEL7 consume in standby mode?
The typical standby power consumption is 7 mW. - What calibration options are available on the AD7711ARZ-REEL7?
The AD7711ARZ-REEL7 offers self-measurement, system, and background calibration options. - Can the AD7711ARZ-REEL7 be controlled via software?
Yes, the AD7711ARZ-REEL7 allows software-programmable gain settings, signal polarity, input channel selection, and RTD current control via a bidirectional serial port.
