Overview
The AD7228ACPZ-REEL, produced by Analog Devices Inc., is a highly integrated digital-to-analog converter (DAC) chip. It features eight 8-bit voltage-mode DACs, each with an output buffer amplifier and interface logic, all on a single monolithic chip. This device is designed to operate with either single or dual power supplies, enhancing its versatility in various applications. The AD7228ACPZ-REEL is fabricated using an all ion-implanted, high-speed, Linear Compatible CMOS (LC2MOS) process, which integrates high-speed digital logic and precision analog circuits effectively.
Key Specifications
| Parameter | Value | Notes |
|---|---|---|
| Number of DACs | 8 | |
| Number of Bits | 8 | |
| Output Type | Voltage - Buffered | |
| Reference Type | External | |
| Voltage - Supply, Analog | 10.8 V to 16.5 V, ±5 V | Dual supply operation |
| Voltage - Supply, Digital | 5 V ± 5% | Single supply operation |
| Settling Time | 5 µs, 7 µs | |
| INL/DNL (LSB) | ±0.5 (Max), ±1 (Max) | |
| Architecture | R-2R | |
| Operating Temperature | -40°C to +85°C | |
| Package | 28-Lead PLCC |
Key Features
- Eight 8-bit DACs with output buffer amplifiers on a single chip, reducing board space and increasing reliability.
- Operates with single or dual power supplies, allowing for flexible system design.
- No external trims required to achieve full specified performance.
- Microprocessor-compatible interface with a common 8-bit data bus and individual DAC latches.
- Speed compatible with most 8-bit microprocessors, with a write pulse (WR) of 95 ns.
- Output buffer amplifiers capable of developing 10 V across a 2 kΩ load.
- Available in various packages including 24-lead PDIP, CERDIP, SOIC, and 28-lead PLCC surface-mount packages.
Applications
The AD7228ACPZ-REEL is suitable for a wide range of applications that require multiple DACs, such as:
- Industrial control systems where precise analog output is necessary.
- Aerospace and defense systems requiring high reliability and compact design.
- Medical devices that need accurate and stable analog outputs.
- Automotive systems where robust and reliable DAC performance is critical.
- Test and measurement equipment that require multiple analog outputs.
Q & A
- What is the AD7228ACPZ-REEL?
The AD7228ACPZ-REEL is an octal 8-bit digital-to-analog converter (DAC) chip produced by Analog Devices Inc.
- How many DACs does the AD7228ACPZ-REEL contain?
The device contains eight 8-bit DACs.
- What are the power supply options for the AD7228ACPZ-REEL?
The device can operate with either single or dual power supplies.
- What is the settling time of the AD7228ACPZ-REEL?
The settling time is 5 µs and 7 µs.
- Does the AD7228ACPZ-REEL require external trims?
No, external trims are not required to achieve full specified performance.
- What is the operating temperature range of the AD7228ACPZ-REEL?
The operating temperature range is -40°C to +85°C.
- In what package is the AD7228ACPZ-REEL available?
The device is available in a 28-Lead PLCC package.
- Is the AD7228ACPZ-REEL compatible with microprocessors?
Yes, it is microprocessor-compatible with a common 8-bit data bus and individual DAC latches.
- What is the output capability of the buffer amplifiers?
Each output buffer amplifier can develop 10 V across a 2 kΩ load.
- What type of architecture does the AD7228ACPZ-REEL use?
The device uses an R-2R architecture.
