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Product Detailed Parameters
- Description：IC DAC 8BIT V-OUT 28PLCC
- Series：-
- Mfr：Analog Devices Inc.
- Package：Bulk,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 AD7225LPZ 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 in a 28-lead PLCC package. The device supports simultaneous update of all outputs via the LDAC signal and features separate reference inputs for each channel. It operates with single or dual supplies, typically requiring VDD between 11.4 V and 16.5 V. Key static performance metrics include ±1 LSB maximum differential nonlinearity and ±0.5 LSB maximum relative accuracy for the L/C versions.
Feature Summary
- Quad 8-bit architecture with integrated output buffer amplifiers
- Double-buffered inputs allowing simultaneous update of all four channels
- Separate reference input terminals for each DAC channel
- TTL and CMOS compatible digital interface logic
Applications
- Programmable gain amplifier systems
- Digital potentiometer replacements
- Programmable filters and equalizers
- Waveform generation circuits
Procurement Notes
Verify the specific suffix LPZ corresponds to the 28-lead Plastic Leaded Chip Carrier (PLCC) package with a -40°C to +85°C operating temperature range. Confirm that the required supply voltages align with the specified VDD range of 11.4 V to 16.5 V and VSS of -5 V for optimal performance specifications.
Selection Notes
Select this component when a compact quad DAC solution with independent reference inputs is required. The L/C version offers improved accuracy (±0.5 LSB relative accuracy) compared to K/B versions. Ensure the application can accommodate the 28-lead PLCC footprint and provides adequate thermal dissipation, as power derating applies above 75°C.
Part Context
The AD7225 belongs to Analog Devices' family of LC2MOS data converters. The LPZ designation specifically identifies the commercial grade (L) variant housed in a 28-lead PLCC package. This packaging option provides a surface-mount alternative to the skinny PDIP or SOIC packages while maintaining the same electrical characteristics and pinout functionality.
Replacement Considerations
Direct pin-compatible alternatives within the same family include the AD7225KNZ (PDIP), AD7225ARZ (SOIC), and AD7225CRSZ (SSOP). These variants share identical electrical specifications but differ in package type and mounting style.
