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Product Detailed Parameters
- Description：IC DAC 8BIT V-OUT 28PLCC
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tape & Reel (TR),Bulk
- 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：28-LCC (J-Lead)
- Supplier Device Package：28-PLCC (11.51x11.51)
- Mounting Type：Surface Mount
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Overview
The AD7228KP-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 process. The device features individual latches for each channel, controlled via a common 8-bit parallel data bus and address inputs (A0-A2). It supports dual supplies (VDD: 10.8 V to 16.5 V; VSS: -5 V ± 10%) or single supply operation. Key electrical parameters include a settling time of 5 µs for positive full-scale changes and 7 µs for negative changes in single-supply mode, with a maximum power dissipation of 1 W.
Feature Summary
- Octal architecture containing eight independent 8-bit DACs with integrated output buffers.
- Microprocessor-compatible parallel interface with TTL/CMOS levels and speed compatible with 95 ns WR pulses.
- Operates with dual supplies (-5 V to +16.5 V) or single supply (+15 V), supporting reference voltages from 2 V to 10 V.
- No external trims required; guaranteed monotonicity with differential nonlinearity of ±1 LSB.
Applications
- Automated test equipment requiring timing deskew capabilities.
- Systems needing coarse/fine voltage adjustment control.
- Multi-channel signal generation where board space reduction is critical.
Procurement Notes
Verify the specific suffix 'K' indicates the commercial temperature grade (-40°C to +85°C) and 'PZ' denotes the 28-lead PLCC package. Confirm that the '-REEL' designation corresponds to tape-and-reel packaging as specified in the ordering guide. Ensure compatibility with the required supply voltage range and reference input specifications before integration.
Selection Notes
Select this component when multiple isolated DAC channels are needed within a single footprint. The AD7228KP-REEL is suitable for applications requiring fast settling times (5 µs) and high input impedance buffering. Consider the 28-lead PLCC package constraints and ensure the design accommodates the 2 kΩ minimum load resistance requirement for specified performance.
Part Context
The AD7228 series includes variants such as AD7228ACPZ-REEL and AD7228KNZ. The AD7228KP-REEL specifically utilizes the PLCC surface-mount package. Other packages available for the AD7228 family include 24-lead PDIP, CERDIP, and SOIC. All variants share the same core functionality but differ in pinout optimization and thermal characteristics.
Replacement Considerations
Public confirmed substitute part numbers are not provided in the source material. Designers should consult the manufacturer's documentation for comparable parts or parametric search results to identify alternative octal DAC solutions if this specific package or grade is unavailable.
