Overview
The AD8522AR from Analog Devices Inc. is a complete dual 12-bit, single-supply, voltage output digital-to-analog converter (DAC). This monolithic device is designed for high-performance data acquisition applications and is ideal for +5 V-only systems. It features a serial digital interface, onboard reference, and buffered voltage outputs, making it a versatile and easy-to-use component. The AD8522AR is available in 14-pin plastic DIP and low-profile 1.5 mm SOIC-14 packages, offering a space-saving solution for various applications.
Key Specifications
| Parameter | Value |
|---|---|
| Number of Bits | 12 |
| Number of D/A Converters | 2 |
| Settling Time | 16 μs (typical) |
| Voltage Supply (Analog/Digital) | +5 V |
| INL/DNL (LSB) | ±0.5 LSB |
| Architecture | R-2R |
| Output Type | Voltage - Buffered |
| Differential Output | No |
| Data Interface | SPI |
| Reference Type | Internal |
| Operating Temperature | -40°C to 85°C |
| Package/Case | 14-SOIC (0.154", 3.90mm Width) |
| Mounting Type | Surface Mount |
Key Features
- Complete dual 12-bit DAC with no external components required for full performance.
- +5 V single-supply operation with ±10% tolerance.
- Buffered voltage outputs with 4.095 V full scale and 1 mV/LSB resolution.
- Low power consumption: 5 mW per DAC.
- Space-saving 1.5 mm height SO-14 package.
- Serial digital interface for easy interfacing with microcontrollers.
- Internal reference and curvature-corrected bandgap reference.
- Output buffers capable of driving ±5 mA.
- Reset input (RS) to set outputs to zero scale or midscale.
Applications
- Digitally controlled calibration systems.
- Servo controls and process control equipment.
- Computer peripherals and portable instrumentation.
- Industrial control systems and medical devices.
- Aerospace and defense applications.
Q & A
- What is the resolution of the AD8522AR DAC?
The AD8522AR has a 12-bit resolution.
- How many DAC channels does the AD8522AR have?
The AD8522AR has two independent DAC channels.
- What is the typical settling time of the AD8522AR?
The typical settling time is 16 μs.
- What is the voltage supply requirement for the AD8522AR?
The AD8522AR operates on a +5 V single supply with ±10% tolerance.
- What is the architecture of the AD8522AR?
The architecture is R-2R.
- Does the AD8522AR have differential output?
No, the AD8522AR does not have differential output.
- What type of data interface does the AD8522AR use?
The AD8522AR uses an SPI (Serial Peripheral Interface) data interface.
- What is the operating temperature range of the AD8522AR?
The operating temperature range is -40°C to 85°C.
- What package types are available for the AD8522AR?
The AD8522AR is available in 14-pin plastic DIP and low-profile 1.5 mm SOIC-14 packages.
- What are some common applications of the AD8522AR?
Common applications include digitally controlled calibration systems, servo controls, process control equipment, computer peripherals, and portable instrumentation.
