Overview
The AD7703BNZ, produced by Analog Devices Inc., is a high-precision 20-bit analog-to-digital converter (ADC) designed for applications requiring high accuracy and low power consumption. This ADC utilizes a sigma-delta conversion technique, ensuring excellent linearity and a true 20-bit dynamic range. The device features an on-chip digital filter with a six-pole Gaussian response and supports various interface modes, making it versatile for integration with microcontrollers and DSP processors.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 20 bits |
| Accuracy | 0.0003% |
| Output Word Rate | Up to 4 kHz |
| Sampling Rate | Set by master clock input or on-chip clock oscillator |
| Interface Modes | Asynchronous (UART compatible), Synchronous (shift register compatible) |
| Power Consumption | Low operating power, ultralow power standby mode (10 µW) |
| Operating Temperature | -40°C to +85°C |
| Package Type | 20-Lead Plastic Dual In-Line Package (PDIP) |
Key Features
- High Resolution and Accuracy: Offers 20-bit resolution with 0.0003% accuracy, ensuring no missing codes and a true 20-bit dynamic range.
- Self-Calibration: On-chip self-calibration eliminates zero and gain errors, and can include external circuits in the calibration loop.
- Flexible Interface: Supports asynchronous and synchronous interface modes, compatible with UARTs, shift registers, and microcontrollers.
- Low Power Consumption: Features low operating power and an ultralow power standby mode, making it ideal for battery-powered and loop-powered applications.
- Digital Filter: Includes an on-chip six-pole Gaussian digital low-pass filter to process the modulator output.
Applications
- Remote Sensing: Suitable for loop-powered remote sensing applications due to its low power consumption.
- Portable Instruments: Ideal for battery-powered portable instruments requiring high precision and low power.
- Industrial Automation: Can be used in various industrial automation applications where high accuracy and reliability are crucial.
- Medical Devices: Applicable in medical devices that require precise analog-to-digital conversion with low power consumption.
Q & A
- What is the resolution of the AD7703BNZ ADC?
The AD7703BNZ has a 20-bit resolution.
- What is the accuracy of the AD7703BNZ?
The accuracy of the AD7703BNZ is 0.0003%.
- How is the output word rate of the AD7703BNZ determined?
The output word rate is set by the master clock input or the on-chip clock oscillator.
- What types of interfaces does the AD7703BNZ support?
The AD7703BNZ supports asynchronous (UART compatible) and synchronous (shift register compatible) interface modes.
- What is the power consumption of the AD7703BNZ in standby mode?
The power consumption in standby mode is 10 µW.
- How does the AD7703BNZ handle temperature drift?
The AD7703BNZ eliminates temperature drift through on-chip self-calibration.
- What is the operating temperature range of the AD7703BNZ?
The operating temperature range is -40°C to +85°C.
- What package type is the AD7703BNZ available in?
The AD7703BNZ is available in a 20-Lead Plastic Dual In-Line Package (PDIP).
- Can the AD7703BNZ be used in battery-powered applications?
Yes, the AD7703BNZ is suitable for battery-powered applications due to its low power consumption.
- How does the AD7703BNZ interface with microcontrollers and DSP processors?
The AD7703BNZ interfaces directly with the serial ports of industry-standard microcontrollers and DSP processors through its flexible serial port.
