Overview
The AD7228ACP, 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 fabricated using an all ion-implanted, high-speed, linear-compatible CMOS (LC2MOS) process, enabling the integration of high-speed digital logic and precision analog circuits. The AD7228ACP is designed to provide a compact and reliable solution for systems requiring multiple DACs, reducing board space and increasing overall system reliability.
Key Specifications
| Specification | Value |
|---|---|
| Number of DACs | 8 |
| Resolution | 8-bit |
| Output Mode | Voltage Mode |
| Reference Voltage Range | 2 V to 10 V (dual supplies), 10 V (single supply) |
| Output Buffer Amplifier Capability | 10 V across a 2 kΩ load |
| Operating Temperature Range | −40°C to +85°C |
| Package Types | 24-Lead CerDIP, 24-Lead PDIP, 28-Lead PLCC, 24-Lead SOIC (Wide) |
| Data Bus Compatibility | TTL/CMOS-compatible (5 V) |
| Address Inputs | A0, A1, A2 |
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 data transferred through a common 8-bit TTL/CMOS-compatible input port.
- Control logic is speed compatible with most 8-bit microprocessors.
- Operates with single or dual supplies, enhancing performance for some parameters.
- Compact package options (PDIP, CERDIP, SOIC, PLCC) to optimize 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 critical.
- Medical devices needing precise analog signal generation.
- Automotive systems requiring robust and reliable DAC solutions.
- Any application requiring multiple 8-bit DACs with high precision and reliability.
Q & A
- What is the resolution of the DACs in the AD7228ACP?
The AD7228ACP contains eight 8-bit DACs.
- What is the reference voltage range for the AD7228ACP?
The reference voltage range is from 2 V to 10 V when using dual supplies, and 10 V for single supply operation.
- Does the AD7228ACP require external trims for full performance?
No, the AD7228ACP does not require external trims to achieve full specified performance.
- What types of packages are available for the AD7228ACP?
The AD7228ACP is available in 24-Lead CerDIP, 24-Lead PDIP, 28-Lead PLCC, and 24-Lead SOIC (Wide) packages.
- Is the AD7228ACP compatible with most microprocessors?
Yes, the control logic of the AD7228ACP is speed compatible with most 8-bit microprocessors.
- What is the operating temperature range of the AD7228ACP?
The operating temperature range is −40°C to +85°C.
- How many address inputs does the AD7228ACP have?
The AD7228ACP has three address inputs: A0, A1, and A2.
- What is the capability of each output buffer amplifier in the AD7228ACP?
Each output buffer amplifier can develop 10 V across a 2 kΩ load.
- Does the AD7228ACP have ESD protection?
Yes, the AD7228ACP features proprietary ESD protection circuitry.
- What is the data bus compatibility of the AD7228ACP?
The data bus is TTL/CMOS-compatible (5 V).
