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Product Detailed Parameters
- Description：IC DAC 8BIT V-OUT 28PLCC
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tube,Tube
- 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 AD7225LP 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. 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, and power supply ranges of VDD = 11.4 V to 16.5 V and VSS = −5 V. It features separate reference inputs for each channel and is housed in a 28-lead PLCC package.
Feature Summary
- Quad 8-bit DAC architecture with integrated output buffer amplifiers
- Double-buffered interface allowing simultaneous update of all four channels
- Separate reference input terminals for each DAC channel
- Compatible with TTL and CMOS logic levels
Applications
- Programmable gain amplifiers
- Digital potentiometer replacement
- Programmable filters
- Waveform generation
Procurement Notes
Verify component authenticity through authorized Analog Devices distributors. Confirm the specific L-version suffix indicates the commercial temperature grade (-40°C to +85°C). Ensure the 28-lead PLCC package matches the target PCB footprint. Check for RoHS compliance status as manufacturing processes may evolve.
Selection Notes
Select the AD7225LP when four independent 8-bit voltage outputs are required with high speed. The L-version offers improved static performance compared to K/B versions, including ±1/2 LSB relative accuracy. Ensure the application can accommodate the 28-lead PLCC package size and that the system design supports the required dual or single supply voltages.
Part Context
The AD7225 belongs to the AD7225 family of LC2MOS DACs. The LP variant specifically denotes the 28-lead Plastic Leadless Chip Carrier (PLCC) package option. This family is designed for applications requiring multiple converters in a compact form factor with minimal external trimming requirements.
Replacement Considerations
Direct substitutes within the same package include other AD7225 variants such as the AD7225LQ (CERDIP) or AD7225LR (SOIC/SSOP), provided the pinout compatibility is verified. Cross-family replacements require careful evaluation of resolution, speed, and package dimensions.
