Overview
The AD8522ARZ, produced by Analog Devices Inc., is a complete dual 12-bit, single-supply, voltage output Digital-to-Analog Converter (DAC) available in 14-pin plastic DIP and low profile 1.5 mm SOIC-14 packages. Fabricated in a CBCMOS process, this monolithic device is designed for +5 V-only systems, offering low cost and ease of use without requiring any external components to achieve full performance.
The AD8522 features a serial digital interface, onboard reference, and buffered voltage output, making it ideal for various applications that require precise analog voltage outputs from digital inputs.
Key Specifications
| Specification | Value | Notes |
|---|---|---|
| Resolution | 12 bits | |
| Supply Voltage | +5 V ± 10% | |
| Full Scale Output Voltage | 4.095 V | Laser trimmed for accuracy |
| Output Resolution | 1 mV/LSB | |
| Reference Voltage Output | 2.5 V nominal | For external data acquisition and ratiometric applications |
| Output Buffer Capability | ±5 mA | |
| Operating Temperature Range | -55°C to +125°C | |
| Package Types | 14-pin DIP, 14-pin SOIC | |
| Power Consumption | 5 mW/DAC |
Key Features
- Complete dual 12-bit DAC with no external components required
- Serial digital interface with high-speed, three-wire data, clock, and load strobe format
- Onboard reference and buffered voltage output
- Low power consumption: 5 mW per DAC
- Space-saving 1.5 mm height SO-14 package
- Serial data output for daisy-chaining multiple devices
- Reset input (RS) to set outputs to zero scale or midscale
Applications
- Digitally controlled calibration
- Servo controls
- Process control equipment
- Computer peripherals
- Portable instrumentation
Q & A
- What is the resolution of the AD8522 DAC?
The AD8522 has a resolution of 12 bits.
- What is the supply voltage requirement for the AD8522?
The AD8522 operates on a single +5 V supply with a tolerance of ±10%.
- What is the full scale output voltage of the AD8522?
The full scale output voltage is 4.095 V, which is laser trimmed for accuracy.
- What is the output resolution of the AD8522?
The output resolution is 1 mV per least significant bit (LSB).
- Does the AD8522 have an onboard reference voltage output?
Yes, the AD8522 provides a 2.5 V nominal reference voltage output for external use.
- What is the maximum current that the output buffers of the AD8522 can drive?
The output buffers can drive up to ±5 mA.
- What are the available package types for the AD8522?
The AD8522 is available in 14-pin plastic DIP and 14-pin SOIC packages.
- How much power does the AD8522 consume per DAC?
The AD8522 consumes 5 mW of power per DAC.
- Can multiple AD8522 devices be daisy-chained?
Yes, multiple devices can be daisy-chained using the serial data output and chip select input.
- What is the purpose of the RS input on the AD8522?
The RS input resets the DAC registers to zero scale or midscale, as determined by the MSB pin.
