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Product Detailed Parameters
- Description：IC DAC 8BIT V-OUT 24SOIC
- Series：-
- Mfr：Analog Devices Inc.
- Package：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)：±1 (Max), ±1 (Max)
- Architecture：R-2R
- Operating Temperature：-40°C ~ 85°C
- Package / Case：24-SOIC (0.295", 7.50mm Width)
- Supplier Device Package：24-SOIC
- Mounting Type：Surface Mount
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Overview
The AD7225KRZ 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 features separate reference inputs for each channel. It operates with single or dual supplies, accepting TTL and CMOS compatible digital inputs. The KRZ suffix denotes the commercial temperature grade (-40°C to +85°C) in a 24-lead SSOP package.
Feature Summary
- Quad 8-bit resolution with integrated output buffer amplifiers
- Double-buffered interface allowing simultaneous update of all four channels
- Separate reference input for each DAC channel
- Compatible with single or dual power supplies
Applications
- Programmable transversal filters
- Digital word multiplication circuits
- Microprocessor-controlled analog signal generation
Procurement Notes
Verify the ordering suffix 'KRZ' corresponds to the specific package and temperature range required for the design. Confirm that the 24-lead SSOP footprint matches the PCB layout. Ensure supply voltages adhere to the specified ranges for the selected operating mode.
Selection Notes
Select this component when a compact solution for four independent 8-bit DACs is needed. The double-buffering feature is critical for applications requiring synchronized output updates. Verify that the external reference voltage source can drive the input capacitance and maintains low output impedance across the code transition range.
Part Context
The AD7225 series includes variants such as the AD7225KNZ (PDIP), AD7225CRSZ (SSOP), and AD7225LPZ (PLCC). The AD7225KRZ specifically utilizes the skinny 24-lead SSOP package. All variants share the same internal architecture and electrical specifications, differing primarily in physical packaging and lead configuration.
Replacement Considerations
Direct pin-compatible replacements within the same family include AD7225CRSZ and AD7225KNZ. Cross-family replacements require verification of interface compatibility and pinout alignment.
