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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：4
- Settling Time：4µs
- Output Type：Voltage - Buffered
- Differential Output：No
- Data Interface：Parallel
- Reference Type：External
- Voltage - Supply, Analog：11.4V ~ 16.5V, -5V
- Voltage - Supply, Digital：14.25V ~ 15.75V
- INL/DNL (LSB)：±0.5 (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 AD7225LPZ-REEL is a quad 8-bit voltage-output digital-to-analog converter (DAC) fabricated on an LC2MOS process. It integrates four DACs with output buffer amplifiers and double-buffered interface logic on a single chip. Each channel features a separate reference input, allowing independent configuration. The device supports simultaneous update of all outputs via the LDAC signal and operates with single or dual supplies. Key electrical parameters include a settling time of 4 µs, ±1 LSB differential nonlinearity for L/C versions, and power supply ranges of 11.4 V to 16.5 V for VDD and -5 V for VSS.
Feature Summary
- Quad 8-bit architecture with integrated output buffer amplifiers
- Separate reference input terminals for each DAC channel
- Double-buffered inputs enabling simultaneous update of all four outputs
- Microprocessor-compatible parallel interface with TTL/CMOS level compatibility
Applications
- Programmable transversal filters
- Digital word multiplication circuits
- Systems requiring multiple synchronized analog outputs
Procurement Notes
Verify that the REEL suffix indicates tape-and-reel packaging rather than tube packaging when sourcing components. Confirm the L version specifications, such as ±1/2 LSB relative accuracy, apply to the specific batch. Ensure handling procedures account for the CMOS construction and ESD sensitivity during assembly.
Selection Notes
Select this component when four independent 8-bit conversions are required in a compact footprint. The L version offers improved static performance compared to K/B versions. Ensure the application can provide the required VDD range of 11.4 V to 16.5 V and that the reference voltage remains within 2 V to (VDD - 4 V).
Part Context
This part belongs to the AD7225 family of LC2MOS DACs. The LPZ designation identifies the 28-lead PLCC package variant. Other variants in the series include PDIP, SOIC, and SSOP packages, offering flexibility for different board layout requirements while maintaining identical functional characteristics.
Replacement Considerations
Direct pin-for-pin replacements within the same package type should be verified against the manufacturer's ordering guide. Alternative packages like SOIC or SSOP may require schematic adjustments due to pinout differences.
