Overview
The AD7228ACR-REEL, produced by Analog Devices Inc., is an integrated circuit that contains eight 8-bit voltage-mode digital-to-analog converters (DACs) along with output buffer amplifiers and interface logic 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 AD7228ACR-REEL operates with either single or dual supplies, enhancing its versatility in different system configurations.
Key Specifications
| Parameter | Description |
|---|---|
| Number of DACs | Eight 8-bit DACs |
| Supply Voltage | Single supply: +5 V, +12 V, or +15 V; Dual supplies: VDD = 10.8 V to 16.5 V, VSS = –5 V ± 10% |
| Reference Voltage Range | +2 V to +10 V |
| Output Voltage Range | Up to +10 V across a 2 kΩ load |
| Data Bus | Common 8-bit TTL/CMOS-compatible input port |
| Address Inputs | A0, A1, and A2 determine which latch is loaded |
| Package Types | PDIP, CERDIP, SOIC, and 28-terminal surface mount packages |
| ESD Sensitivity | ESD sensitive device; proper ESD precautions recommended |
Key Features
- Eight 8-bit voltage-mode DACs with output buffer amplifiers on a single chip, reducing board space and increasing reliability.
- No external trims required to achieve full specified performance.
- Single-supply operation with a reference voltage of up to +10 V, or dual-supply operation for enhanced performance.
- Common 8-bit data bus with individual DAC latches, compatible with most 8-bit microprocessors.
- Highly stable, thin-film R-2R ladder and high-speed NMOS switches in each DAC.
- Novel DAC switch pair arrangement allowing a reference voltage range from +2 V to +10 V.
Applications
- Industrial control systems requiring multiple analog outputs.
- Aerospace and defense systems where high reliability and compact design are crucial.
- Medical devices needing precise analog signal generation.
- Automotive systems that require robust and reliable DAC performance.
- Any application requiring multiple 8-bit DACs with integrated output amplifiers.
Q & A
- What is the AD7228ACR-REEL? The AD7228ACR-REEL is an integrated circuit containing eight 8-bit voltage-mode digital-to-analog converters (DACs) with output buffer amplifiers and interface logic on a single chip.
- What are the supply voltage options for the AD7228ACR-REEL? It can operate with single supplies (+5 V, +12 V, or +15 V) or dual supplies (VDD = 10.8 V to 16.5 V, VSS = –5 V ± 10%).
- What is the reference voltage range for the AD7228ACR-REEL? The reference voltage range is from +2 V to +10 V.
- How many DACs are integrated into the AD7228ACR-REEL? There are eight 8-bit DACs.
- Is the AD7228ACR-REEL compatible with microprocessors? Yes, it has a common 8-bit data bus with individual DAC latches, making it compatible with most 8-bit microprocessors.
- What types of packages are available for the AD7228ACR-REEL? It is available in PDIP, CERDIP, SOIC, and 28-terminal surface mount packages.
- Does the AD7228ACR-REEL require external trims? No, external trims are not required to achieve full specified performance.
- How does the AD7228ACR-REEL handle ESD? The device is ESD sensitive and requires proper ESD precautions to avoid performance degradation or loss of functionality.
- What is the output voltage range of the AD7228ACR-REEL? Each output buffer amplifier can develop up to +10 V across a 2 kΩ load.
- What kind of logic is used in the AD7228ACR-REEL? The device uses high-speed, Linear Compatible CMOS (LC2MOS) process.
