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Product Detailed Parameters
- Description：IC DAC 8BIT V-OUT 24SOIC
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tape & Reel (TR)
- 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-REEL is a quad 8-bit digital-to-analog converter (DAC) manufactured by Analog Devices Inc. It integrates four voltage-output DACs with buffer amplifiers and double-buffered interface logic on a single LC2MOS chip. Each channel features a separate reference input, enabling 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 an 8-bit resolution, 4 µs settling time to ±½ LSB, and power supply ranges of 11.4 V to 16.5 V for VDD and -5 V for VSS.
Feature Summary
- Four independent 8-bit DACs with integrated output buffer amplifiers
- Separate reference input terminal for each DAC channel
- Double-buffered inputs allowing simultaneous update of all four outputs
- Microprocessor-compatible TTL/CMOS interface logic
Applications
- Programmable transversal filters
- Digital word multiplication circuits
- Microprocessor-based control systems requiring multi-channel analog output
Procurement Notes
Verify that the REEL suffix indicates tape-and-reel packaging rather than tube packaging when sourcing components. Confirm the K version temperature range (-40°C to +85°C) matches application requirements. Ensure the ordering code corresponds to the specific package type listed in the manufacturer's current guide, as package availability may vary.
Selection Notes
Select this component when multiple low-cost, 8-bit voltage outputs are required from a single IC. The separate reference inputs allow for flexible gain and offset adjustments per channel. Ensure the system can provide the required VDD range (11.4 V to 16.5 V) and that the load resistance does not fall below 2 kΩ to maintain specified performance.
Part Context
The AD7225KRZ-REEL belongs to the AD7225 family of quad 8-bit DACs. The 'K' denotes the commercial temperature grade (-40°C to +85°C), while 'RZ' typically indicates a RoHS-compliant SOIC-24 package. The '-REEL' suffix specifies the reel packaging format for automated assembly processes.
Replacement Considerations
Direct pin-compatible replacements within the same family include the AD7225KNZ and AD7225CRSZ. Verify that alternative packages (PDIP, PLCC) meet the physical footprint constraints if substituting with non-SOIC variants.
