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Product Detailed Parameters
- Description：IC DAC 8BIT QUAD W/AMP 28-PLCC
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tube
- Number of Bits：-
- Number of D/A Converters：-
- Settling Time：-
- Output Type：-
- Differential Output：-
- Data Interface：-
- Reference Type：-
- Voltage - Supply, Analog：-
- Voltage - Supply, Digital：-
- INL/DNL (LSB)：-
- Architecture：-
- Operating Temperature：-
- Package / Case：28-LCC (J-Lead)
- Supplier Device Package：28-PLCC (11.51x11.51)
- Mounting Type：Surface Mount
- Grade：-
- Qualification：-
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Overview
The AD7225KP is a monolithic LC2MOS quad 8-bit digital-to-analog converter (DAC) featuring integrated output buffer amplifiers and double-buffered interface logic. It supports simultaneous update of all four channels via the LDAC signal. The device operates with single or dual supplies, requiring VDD from 11.4 V to 16.5 V and VSS at −5 V for specified performance. Each DAC has a separate reference input allowing independent voltage ranges from 2 V to (VDD − 4 V). Key static parameters include ±1 LSB relative accuracy and ±1 LSB differential nonlinearity for the K version. Dynamic performance specifies a settling time of 4 μs to ±½ LSB.
Feature Summary
- Four independent 8-bit DACs with buffered voltage outputs on a single chip
- Double-buffered inputs allow simultaneous update of all four analog outputs
- Separate reference input terminals for each DAC channel
- TTL and CMOS compatible digital interface logic
Applications
- Programmable transversal filters
- Digital word multiplication circuits
- Microprocessor-controlled analog signal generation
Procurement Notes
Verify the package type associated with the KP suffix against the manufacturer's ordering guide, as the datasheet lists Skinny 24-lead PDIP, CERDIP, SOIC, SSOP, and 28-lead PLCC options. Confirm that the specific revision of the component matches the required temperature range and electrical specifications defined in the official Analog Devices documentation.
Selection Notes
Select the AD7225KP when a quad-channel 8-bit DAC with high-speed parallel interface is required. Ensure the application can accommodate the specified power supply rails (VDD 11.4–16.5 V, VSS −5 V) or verify if single-supply operation meets the performance requirements. Check that the load resistance is no less than 2 kΩ to maintain specified output drive capabilities.
Part Context
The AD7225 belongs to the Analog Devices LC2MOS family of precision data converters. This process technology integrates high-speed digital logic with linear analog circuitry on a single chip. The AD7225 serves as a multi-channel solution for systems requiring multiple synchronized analog outputs, reducing board space compared to discrete implementations.
Replacement Considerations
The AD7225CQ is listed as a similar part number within the same product family. Verify pin compatibility and electrical specifications before substitution.
