Overview
The AD7701ARZ is a 16-bit Sigma-Delta Analog-to-Digital Converter (ADC) produced by Analog Devices Inc. This device is renowned for its high precision and low power consumption, making it suitable for a variety of applications requiring accurate analog-to-digital conversion. The AD7701ARZ uses a sigma-delta conversion technique, where the analog input is continually sampled by an analog modulator, and the output is processed by an on-chip digital filter with a six-pole Gaussian response. This ADC features self-calibration for zero and full scale, ensuring excellent linearity and endpoint accuracy.
Key Specifications
| Specification | Value |
|---|---|
| Part Number | AD7701ARZ |
| Manufacturer | Analog Devices Inc. |
| Package / Case | 20-Lead SOIC (Wide) |
| Number of Pins | 20 |
| Number of Bits | 16 |
| Architecture | Sigma-Delta |
| Input Type | Single Ended |
| Min/Max Input Voltage | 2.5V |
| Min/Max Supply Voltage | -4.5V / 5.5V |
| Power Dissipation | 37mW |
| Sampling Rate | Up to 4 kHz |
| Interface | SPI, Serial |
| Output Bit Code | BINARY, OFFSET BINARY |
| Power Consumption | 25mW (active), 10 µW (power down mode) |
| Linearity Error-Max (EL) | 0.003% |
| Differential Nonlinearity | 0.5 LSB |
Key Features
- High Precision: The AD7701ARZ features a 16-bit resolution with excellent linearity and endpoint accuracy due to its self-calibration capabilities.
- Low Power Consumption: The device operates with low power dissipation of 25mW in active mode and reduces to 10 µW in power down mode.
- Flexible Interface: It includes a flexible serial port with asynchronous and synchronous modes, compatible with UARTs, shift registers, and industry-standard microcontrollers.
- Sigma-Delta Conversion: Utilizes a sigma-delta conversion technique with an on-chip digital filter having a six-pole Gaussian response.
- External Reference: Supports an external reference voltage for increased accuracy.
Applications
The AD7701ARZ is suitable for various applications requiring high-precision analog-to-digital conversion, such as:
- Industrial Automation: For precise measurement and control in industrial environments.
- Medical Devices: In medical equipment where accurate signal conversion is critical.
- Test and Measurement: For instruments that require high-resolution and low-noise signal conversion.
- Aerospace and Defense: Where high precision and reliability are essential.
Q & A
- What is the resolution of the AD7701ARZ?
The AD7701ARZ has a 16-bit resolution. - What is the sampling rate of the AD7701ARZ?
The sampling rate can go up to 4 kHz. - What type of conversion technique does the AD7701ARZ use?
The AD7701ARZ uses a sigma-delta conversion technique. - What is the power consumption of the AD7701ARZ in active mode?
The power consumption in active mode is 25mW. - Does the AD7701ARZ support external reference voltage?
Yes, it supports an external reference voltage. - What is the interface type of the AD7701ARZ?
The interface is SPI and serial. - What is the minimum and maximum supply voltage for the AD7701ARZ?
The minimum supply voltage is -4.5V and the maximum is 5.5V. - Is the AD7701ARZ RoHS compliant?
Yes, the AD7701ARZ is ROHS3 compliant. - What is the package type of the AD7701ARZ?
The package type is 20-Lead SOIC (Wide). - Does the AD7701ARZ have a power down mode?
Yes, it has a power down mode that reduces power consumption to 10 µW.
