Overview
The AD7703ANZ is a high-performance, 20-bit analog-to-digital converter (ADC) manufactured by Analog Devices Inc. This device utilizes a sigma-delta (Σ-Δ) conversion technique, ensuring high accuracy and linearity. The AD7703ANZ is designed for applications requiring precise analog-to-digital conversion, with features such as self-calibration, low power consumption, and a flexible serial interface.
Key Specifications
| Specification | Value |
|---|---|
| Resolution | 20 bits |
| Accuracy | 0.0003% |
| Output Word Rate | Up to 4 kHz |
| Sampling Rate | Set by master clock input or on-chip crystal controlled oscillator |
| Filter Response | Six-pole Gaussian digital low-pass filter |
| Power Consumption | Low operating power, ultralow power standby mode (10 µW) |
| Interface | Flexible serial port with asynchronous and synchronous modes |
| Package | 20-Lead Plastic Dual In-Line Package (PDIP) |
| Operating Temperature | -40°C to +85°C |
Key Features
- High Resolution and Accuracy: The AD7703ANZ offers 20-bit resolution with 0.0003% accuracy, ensuring true, usable dynamic range without missing codes.
- Flexible Interface: The device features a flexible serial port with asynchronous and synchronous modes, compatible with UARTs, shift registers, and industry-standard microcontrollers.
- Low Power Consumption: Low operating power and an ultralow power standby mode make it ideal for loop-powered remote sensing applications and battery-powered portable instruments.
- Temperature Stability: The effects of temperature drift are eliminated by the on-chip self-calibration scheme.
Applications
- Remote Sensing: Ideal for loop-powered remote sensing applications due to its low power consumption.
- Portable Instruments: Suitable for battery-powered portable instruments requiring high precision and low power.
- Industrial Automation: Used in various industrial automation applications where precise analog-to-digital conversion is necessary.
- Medical Devices: Applicable in medical devices that require high accuracy and reliability in analog-to-digital conversion.
Q & A
- What is the resolution of the AD7703ANZ?
The AD7703ANZ has a 20-bit resolution.
- What is the accuracy of the AD7703ANZ?
The accuracy of the AD7703ANZ is 0.0003%.
- How is the output word rate of the AD7703ANZ determined?
The output word rate is set by the master clock input or the on-chip crystal controlled oscillator.
- What type of filter does the AD7703ANZ use?
The AD7703ANZ uses a six-pole Gaussian digital low-pass filter.
- What are the power consumption characteristics of the AD7703ANZ?
The AD7703ANZ has low operating power consumption and an ultralow power standby mode of 10 µW.
- What types of interfaces does the AD7703ANZ support?
The device supports a flexible serial port with asynchronous and synchronous modes.
- What is the operating temperature range of the AD7703ANZ?
The operating temperature range is -40°C to +85°C.
- How does the AD7703ANZ handle self-calibration?
The AD7703ANZ performs self-calibration using an on-chip calibration microcontroller and SRAM to store calibration parameters, which can be initiated at any time.
- What are some common applications of the AD7703ANZ?
Common applications include remote sensing, portable instruments, industrial automation, and medical devices.
- What package type is the AD7703ANZ available in?
The AD7703ANZ is available in a 20-Lead Plastic Dual In-Line Package (PDIP).
