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Product Detailed Parameters
- Description：IC DAC 8BIT V-OUT 24SSOP
- 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)：±1 (Max), ±1 (Max)
- Architecture：R-2R
- Operating Temperature：-40°C ~ 85°C
- Package / Case：24-SSOP (0.209", 5.30mm Width)
- Supplier Device Package：24-SSOP
- Mounting Type：Surface Mount
- Grade：-
- Qualification：-
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Overview
The AD7225BRSZ is a quad 8-bit voltage-output digital-to-analog converter (DAC) fabricated on an LC2MOS process. It features four independent DACs with separate reference inputs and output buffer amplifiers. The device utilizes a double-buffered interface for simultaneous update of all outputs via the LDAC signal. It operates with single or dual supplies, supporting VDD ranges from 11.4 V to 16.5 V and VSS at -5 V. Key static performance metrics include ±1 LSB relative accuracy and ±1 LSB differential nonlinearity for the B version. The settling time is 4 μs max, and it supports parallel digital interfaces compatible with TTL and CMOS levels.
Feature Summary
- Quad 8-bit DAC architecture with individual reference inputs per channel
- Double-buffered input registers enable simultaneous update of all four outputs
- Operates with single (+15 V) or dual (+15 V/-5 V) power supplies
- Output buffers drive 10 V across a 2 kΩ load with 4 μs settling time
Applications
- Programmable transversal filters
- Digital word multiplication circuits
- Microprocessor-controlled analog signal generation
Procurement Notes
Verify the suffix 'B' indicates the industrial temperature range (-40°C to +85°C). Confirm the package type corresponds to the RSZ designation, typically SSOP-24. Ensure reference voltages remain within the specified 2 V to (VDD - 4 V) range to maintain guaranteed performance specifications.
Selection Notes
Select the AD7225BRSZ when four independent 8-bit voltage outputs are required with simultaneous update capability. The B version provides ±1 LSB relative accuracy compared to ±2 LSB for the K version. Dual supply operation (-5 V VSS) is recommended for improved zero-code error and negative-going settling time performance.
Part Context
The AD7225 belongs to Analog Devices' family of monolithic CMOS DACs. The RSZ suffix denotes the 24-lead SSOP package variant. This component integrates both the R-2R ladder network and output amplifiers on a single chip, reducing board space requirements compared to discrete solutions.
Replacement Considerations
The AD7225KRSZ offers similar functionality but with relaxed accuracy specifications (±2 LSB relative accuracy). Cross-reference pinouts and electrical characteristics carefully when substituting between versions.
