Overview
The AD7228ABPZ is a highly integrated digital-to-analog converter (DAC) produced by Analog Devices Inc. This component features eight 8-bit voltage-mode DACs, each with output buffer amplifiers and interface logic, all integrated on a single monolithic chip. The device is designed to provide a versatile and space-efficient solution for systems requiring multiple DACs, with no external trims required to achieve full specified performance. It 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 on the same chip.
Key Specifications
| Parameter | Specification |
|---|---|
| Number of DACs | Eight 8-bit DACs |
| Supply Voltage | Single: +5 V, +12 V, +15 V; Dual: 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 |
| Package Types | 24-Pin PDIP, SOIC, and 28-Terminal PLCC surface-mount package |
| Microprocessor Compatibility | Compatible with most 8-bit microprocessors (95 ns WR pulse) |
| ESD Protection | Proprietary ESD protection circuitry |
Key Features
- Eight 8-bit voltage-mode DACs with output buffer amplifiers and interface logic on a single chip
- Operates with single or dual supplies, enhancing performance for some parameters
- Microprocessor-compatible with a common 8-bit data bus and individual DAC latches
- No user trims required for full specified performance
- Highly stable, thin-film, R-2R ladder and eight high-speed NMOS switches in each DAC
- Capable of developing +10 V across a 2 kΩ load per output buffer amplifier
- Compact packaging options including 24-Pin PDIP, SOIC, and 28-Terminal PLCC surface-mount package
Applications
The AD7228ABPZ is suitable for a variety of applications where multiple DACs are required, such as in industrial control systems, medical devices, and automotive systems. Its compact design and high integration make it ideal for reducing board space and increasing system reliability. Additionally, it can be used in systems that require precise analog output control, such as in data acquisition systems, test and measurement equipment, and audio or video processing systems.
Q & A
- What is the AD7228ABPZ?
The AD7228ABPZ is an integrated digital-to-analog converter (DAC) featuring eight 8-bit voltage-mode DACs with output buffer amplifiers and interface logic on a single chip.
- What are the supply voltage options for the AD7228ABPZ?
The device can operate with single supplies (+5 V, +12 V, +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 AD7228ABPZ?
The reference voltage range is from +2 V to +10 V.
- How many DACs are integrated in the AD7228ABPZ?
The device contains eight 8-bit DACs.
- Is the AD7228ABPZ compatible with microprocessors?
Yes, it is compatible with most 8-bit microprocessors, featuring a common 8-bit data bus and individual DAC latches.
- What kind of ESD protection does the AD7228ABPZ have?
The device features proprietary ESD protection circuitry.
- What are the packaging options for the AD7228ABPZ?
The device is available in 24-Pin PDIP, SOIC, and 28-Terminal PLCC surface-mount packages.
- Does the AD7228ABPZ require external trims for full performance?
No, external trims are not required to achieve full specified performance.
- What is the output voltage range of each DAC?
Each output buffer amplifier can develop up to +10 V across a 2 kΩ load.
- What process is used to fabricate the AD7228ABPZ?
The device is fabricated using an all ion-implanted, high-speed, Linear Compatible CMOS (LC2MOS) process.
