Overview
The AD7228KRZ, produced by Analog Devices Inc., is a highly integrated digital-to-analog converter (DAC) chip. It contains eight 8-bit voltage mode DACs, each with output buffer amplifiers and interface logic, all on a single monolithic chip. This device is designed to integrate high-speed digital logic and precision analog circuits, making it suitable for a variety of applications requiring multiple DACs. The AD7228KRZ operates with either single or dual supplies and does not require external trims to achieve its full specified performance.
Key Specifications
| Parameter | Specification |
|---|---|
| Number of DACs | Eight 8-bit DACs |
| Output Type | Voltage mode with output buffer amplifiers |
| Input Reference Voltage Range | 2 V to 10 V (dual supplies), 10 V (single supply) |
| Input Port Compatibility | TTL/CMOS-compatible (5 V) |
| Address Inputs | A0, A1, A2 |
| Write Pulse Width | 95 ns |
| Output Voltage Range | Up to 10 V across a 2 kΩ load |
| Package Options | 24-lead PDIP, CERDIP, SOIC; 28-lead PLCC |
| Fabrication Process | All ion implanted, high speed, linear-compatible CMOS (LC2MOS) |
Key Features
- Eight 8-bit DACs with output amplifiers on a single chip, reducing board space and increasing reliability.
- Operates with single or dual supplies, enhancing flexibility in system design.
- Microprocessor-compatible with a 95 ns write pulse, making it suitable for high-speed applications.
- No user trims required, simplifying the setup and use of the device.
- Available in skinny 24-lead PDIP, CERDIP, and SOIC packages, as well as a 28-lead PLCC surface-mount package, optimizing board layout.
Applications
The AD7228KRZ is versatile and can be used in various applications where multiple DACs are required. Some common applications include:
- Industrial control systems where multiple analog outputs are needed.
- Aerospace and defense systems requiring high reliability and precision.
- Medical devices that need multiple analog outputs for different functions.
- Automotive systems where space and reliability are critical.
- Test and measurement equipment that require multiple DACs for generating analog signals.
Q & A
- What is the AD7228KRZ?
The AD7228KRZ is an octal 8-bit voltage mode digital-to-analog converter (DAC) with output buffer amplifiers and interface logic on a single monolithic chip.
- How many DACs does the AD7228KRZ contain?
The AD7228KRZ contains eight 8-bit DACs.
- What is the input reference voltage range for the AD7228KRZ?
The input reference voltage range is from 2 V to 10 V for dual supplies and 10 V for single supply operation.
- Is the AD7228KRZ compatible with microprocessors?
Yes, the AD7228KRZ is microprocessor-compatible with a 95 ns write pulse, making it suitable for high-speed applications.
- Does the AD7228KRZ require external trims?
No, the AD7228KRZ does not require external trims to achieve its full specified performance.
- What are the package options for the AD7228KRZ?
The AD7228KRZ is available in 24-lead PDIP, CERDIP, SOIC packages, and a 28-lead PLCC surface-mount package.
- What fabrication process is used for the AD7228KRZ?
The AD7228KRZ is fabricated using an all ion implanted, high speed, linear-compatible CMOS (LC2MOS) process.
- What is the maximum output voltage of the AD7228KRZ?
Each output buffer amplifier is capable of developing 10 V across a 2 kΩ load.
- How does the AD7228KRZ optimize board layout?
The pinout of the AD7228KRZ is designed to optimize board layout with all analog inputs and outputs on one side of the package and all digital inputs on the other.
- What are some common applications for the AD7228KRZ?
The AD7228KRZ is used in industrial control systems, aerospace and defense systems, medical devices, automotive systems, and test and measurement equipment.
