Overview
The AD7228ABRZ, 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 an output buffer amplifier and interface logic, all on a single monolithic chip. This device is designed to provide a compact and reliable solution for systems requiring multiple DACs. The AD7228ABRZ operates without the need for external trims to achieve full specified performance, making it a versatile and efficient component for various applications.
Key Specifications
| Specification | Value |
|---|---|
| Number of DACs | 8 |
| Resolution | 8-bit |
| Output Type | Voltage-mode |
| Supply Voltage | Single: +5 V, +12 V, +15 V; Dual: +10 V (VDD) and -5 V (VSS) |
| Reference Voltage Range | +2 V to +10 V |
| Output Buffer Amplifier Capability | Capable of developing +10 V across a 2 kΩ load |
| Package Type | 24-Lead SOIC (Wide) |
| Process Technology | All ion-implanted, high-speed, Linear Compatible CMOS (LC2MOS) |
Key Features
- Eight 8-bit voltage-mode DACs with output buffer amplifiers on a single chip.
- No external trims required for full specified performance.
- Separate on-chip latches for each DAC, with a common 8-bit TTL/CMOS compatible input port.
- Speed compatible with most 8-bit microprocessors.
- Operates with single or dual supplies, enhancing performance in various configurations.
- Compact packaging options including PDIP, SOIC, and PLCC, optimizing board layout.
- ESD protection circuitry to prevent damage from electrostatic discharges.
Applications
- Industrial control systems requiring multiple analog outputs.
- Aerospace and defense systems where reliability and compactness are crucial.
- Medical devices needing precise analog output control.
- Automotive systems that require robust and efficient DAC solutions.
- Test and measurement equipment where high accuracy and stability are necessary.
Q & A
- What is the resolution of each DAC in the AD7228ABRZ?
Each DAC in the AD7228ABRZ has an 8-bit resolution.
- What are the supply voltage options for the AD7228ABRZ?
The AD7228ABRZ can operate with single supplies (+5 V, +12 V, +15 V) or dual supplies (+10 V and -5 V).
- What is the reference voltage range for the AD7228ABRZ?
The reference voltage range is from +2 V to +10 V.
- Does the AD7228ABRZ require external trims for full performance?
No, the AD7228ABRZ does not require external trims to achieve full specified performance.
- What is the output capability of each buffer amplifier in the AD7228ABRZ?
Each output buffer amplifier is capable of developing +10 V across a 2 kΩ load.
- What package types are available for the AD7228ABRZ?
The AD7228ABRZ is available in 24-Lead SOIC (Wide) packages among others.
- Is the AD7228ABRZ compatible with most microprocessors?
- What process technology is used in the fabrication of the AD7228ABRZ?
The AD7228ABRZ is fabricated using an all ion-implanted, high-speed, Linear Compatible CMOS (LC2MOS) process.
- Does the AD7228ABRZ have built-in ESD protection?
- How can the DACs in the AD7228ABRZ be used for coarse and fine adjustments?
The DACs can be paired to form a coarse/fine adjust function using one external op-amp and a few resistors per pair of DACs, as described in the datasheet.
