Overview
The AD7245ABRZ-REEL, manufactured by Analog Devices Inc., is an enhanced version of the industry-standard AD7245/AD7248 digital-to-analog converters (DACs). This 12-bit, voltage output DAC features an integrated output amplifier and a Zener voltage reference on a monolithic CMOS chip. It is designed to operate with high precision and reliability, making it suitable for a variety of applications requiring accurate analog output from digital data.
Key Specifications
| Specification | Details |
|---|---|
| Resolution | 12-bit |
| Output Type | Voltage Output |
| Supply Voltage | 12 V to 15 V |
| Linearity Grade | ±1/2 LSB |
| Output Voltage Ranges | 0 V to 5 V, 0 V to 10 V, -5 V to +5 V (with dual supplies) |
| Interface | Parallel input, double-buffered interface logic |
| Package Types | 24-pin DIP, SOIC, and 28-terminal surface mount packages |
| Temperature Range | Commercial and industrial grades with extended temperature range operation |
Key Features
- Integrated output amplifier and Zener voltage reference on a monolithic CMOS chip.
- No external user trims required to achieve full specified performance.
- High-speed data latches and double-buffered interface logic for microprocessor compatibility.
- Asynchronous LDAC signal for transferring data from the input latch to the DAC latch.
- CLR signal for power-on reset and other features.
- On-chip 5 V buried Zener diode providing a low noise, temperature-compensated reference.
- Capable of developing +10 V across a 2 kOhm load to GND.
- Fabricated in linear compatible CMOS (LC MOS) process combining precision bipolar circuits with low power CMOS logic.
Applications
- Industrial control systems requiring precise analog outputs.
- Aerospace and defense applications where high reliability and accuracy are crucial.
- Medical devices that need stable and precise voltage outputs.
- Automotive systems for various control and monitoring functions.
- Test and measurement equipment where accurate analog signals are necessary.
Q & A
- What is the resolution of the AD7245ABRZ-REEL DAC?
The AD7245ABRZ-REEL has a 12-bit resolution.
- What are the available output voltage ranges for the AD7245ABRZ-REEL?
The output voltage ranges include 0 V to 5 V, 0 V to 10 V, and -5 V to +5 V (with dual supplies).
- Does the AD7245ABRZ-REEL require external user trims for full performance?
No, the AD7245ABRZ-REEL does not require external user trims to achieve full specified performance.
- What is the purpose of the LDAC signal in the AD7245ABRZ-REEL?
The LDAC signal is an asynchronous input that transfers data from the input latch to the DAC latch and updates the analog output.
- What is the significance of the CLR signal in the AD7245ABRZ-REEL?
The CLR signal allows features such as power-on reset to be implemented by resetting the contents of the DAC latch to all 0s.
- What types of packages are available for the AD7245ABRZ-REEL?
The AD7245ABRZ-REEL is available in 24-pin DIP, SOIC, and 28-terminal surface mount packages.
- What is the temperature range for the AD7245ABRZ-REEL?
The AD7245ABRZ-REEL operates over commercial and industrial temperature ranges.
- How does the AD7245ABRZ-REEL ensure low noise and temperature stability?
The AD7245ABRZ-REEL features an on-chip 5 V buried Zener diode that provides a low noise, temperature-compensated reference.
- What is the fabrication process of the AD7245ABRZ-REEL?
The AD7245ABRZ-REEL is fabricated in linear compatible CMOS (LC MOS) process, combining precision bipolar circuits with low power CMOS logic.
- What are some typical applications of the AD7245ABRZ-REEL?
Typical applications include industrial control systems, aerospace and defense, medical devices, automotive systems, and test and measurement equipment.
