Overview
The AD7701ARSZ is a 16-bit Sigma-Delta Analog-to-Digital Converter (ADC) produced by Analog Devices Inc. This device utilizes a sigma-delta conversion technique, where the analog input is continually sampled by an analog modulator. The modulator output is processed by an on-chip digital filter with a six-pole Gaussian response, updating the output data register with 16-bit binary words at word rates up to 4 kHz. The ADC features excellent inherent linearity and endpoint accuracy ensured by self-calibration of zero and full scale, which can be initiated at any time. The self-calibration scheme also helps to null system offset and gain errors in the input channel.
Key Specifications
| Specification | Value |
|---|---|
| Resolution | 16 bits |
| Conversion Technique | Sigma-Delta |
| Output Word Rate | Up to 4 kHz |
| Input Channels | 1 |
| Package Type | 28-Lead SSOP |
| Temperature Range | -40°C to 85°C |
| Power Consumption (Idle) | 10 µW (power down mode) |
| Interface | Flexible serial port (asynchronous and synchronous modes) |
Key Features
- High-resolution 16-bit Sigma-Delta ADC with excellent linearity and accuracy.
- Self-calibration for zero and full scale, as well as system offset and gain errors.
- Flexible serial interface with asynchronous and synchronous modes compatible with UARTs, shift registers, and microcontrollers.
- Low power consumption with CMOS construction and a power down mode reducing idle power to 10 µW.
- Master clock input can be supplied externally or by an on-chip crystal-controlled clock oscillator.
Applications
The AD7701ARSZ is suitable for a variety of applications requiring high precision and low power consumption, such as:
- Industrial process control systems.
- Medical devices requiring precise analog-to-digital conversion.
- Aerospace and defense systems where high accuracy and reliability are crucial.
- Automotive systems, particularly those involving sensor data acquisition.
- Test and measurement equipment.
Q & A
- What is the resolution of the AD7701ARSZ ADC?
The AD7701ARSZ has a resolution of 16 bits. - What conversion technique does the AD7701ARSZ use?
The AD7701ARSZ uses a sigma-delta conversion technique. - What is the maximum output word rate of the AD7701ARSZ?
The maximum output word rate is up to 4 kHz. - How many input channels does the AD7701ARSZ have?
The AD7701ARSZ has one input channel. - What is the package type of the AD7701ARSZ?
The package type is a 28-Lead SSOP. - What is the temperature range of the AD7701ARSZ?
The temperature range is -40°C to 85°C. - How much power does the AD7701ARSZ consume in idle mode?
The power consumption in idle mode is 10 µW. - What types of interfaces does the AD7701ARSZ support?
The AD7701ARSZ supports a flexible serial port with asynchronous and synchronous modes. - Can the AD7701ARSZ be self-calibrated?
Yes, the AD7701ARSZ can be self-calibrated for zero and full scale, as well as system offset and gain errors. - What is the purpose of the master clock input in the AD7701ARSZ?
The master clock input sets the sampling rate, filter corner frequency, and output word rate, and can be supplied externally or by an on-chip crystal-controlled clock oscillator.
