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Product Detailed Parameters
- Description：IC DAC 8BIT V-OUT 24SOIC
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tape & Reel (TR)
- Number of Bits：8
- Number of D/A Converters：8
- Settling Time：5µs, 7µs
- Output Type：Voltage - Buffered
- Differential Output：No
- Data Interface：Parallel
- Reference Type：External
- Voltage - Supply, Analog：10.8V ~ 16.5V, ±5V
- Voltage - Supply, Digital：13.5V ~ 16.5V
- INL/DNL (LSB)：±1 (Max), ±1 (Max)
- Architecture：R-2R
- Operating Temperature：-40°C ~ 85°C
- Package / Case：24-SOIC (0.295", 7.50mm Width)
- Supplier Device Package：24-SOIC
- Mounting Type：Surface Mount
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Overview
The AD7228ABRZ-REEL is an octal 8-bit digital-to-analog converter (DAC) manufactured by Analog Devices Inc. It integrates eight voltage-mode DACs with output buffer amplifiers and interface logic on a single monolithic chip fabricated using LC2MOS CMOS technology. The device features individual latches for each channel, controlled via a common 8-bit parallel data bus and address inputs (A0-A2). It supports both single-supply (13.5 V to 16.5 V) and dual-supply (VDD: 10.8 V to 16.5 V; VSS: -5.5 V to -4.5 V) operation. Key electrical specifications include a maximum settling time of 5 µs for positive full-scale changes and 7 µs for negative changes, with a typical power supply current of 16 mA at 25°C.
Feature Summary
- Octal architecture containing eight independent 8-bit DACs with integrated unity-gain output buffers.
- Microprocessor-compatible parallel interface with TTL/CMOS levels and speed compatible with 95 ns write pulses.
- LC2MOS process technology ensuring high-speed digital logic integration with precision analog circuits.
- Supports unipolar and bipolar output configurations with external components.
Applications
- Automated test equipment requiring multi-channel signal generation.
- Industrial control systems utilizing microprocessor-based architectures.
- Waveform generation applications in instrumentation.
- Programmable power supply designs.
Procurement Notes
Verify the specific grade suffix 'A' against the ordering guide to confirm static performance parameters, as versions K/B differ from L/C. Confirm that the REEL suffix corresponds to the required tape-and-reel packaging format for surface-mount assembly processes. Ensure compatibility with the 24-SOIC package dimensions specified in the outline drawings.
Selection Notes
Select this component when multiple isolated DAC channels are required within a single footprint. The AD7228ABRZ-REEL is suitable for designs needing 8-bit resolution with buffered outputs capable of driving 2 kΩ loads. Consider the 5 V single-supply capability if power dissipation reduction is critical, noting the potential impact on offset accuracy. Verify that the external reference source can handle the varying input impedance presented by the VREF pin.
Part Context
The AD7228ABRZ-REEL belongs to the AD7228 family of octal DACs. The 'ABRZ' designation indicates the A-grade version in a 24-lead SOIC package with RoHS compliance. The '-REEL' suffix specifies the reel packaging variant. This part is distinct from the quad-channel AD7226 or other resolutions within the Analog Devices portfolio.
Replacement Considerations
Public confirmed substitute part numbers are not available in the provided documentation. Designers should verify pinout compatibility and electrical parameter margins if considering alternative octal DACs from other manufacturers.
