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Product Detailed Parameters
- Description：IC DAC 8BIT V-OUT 20SOIC
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tube
- Number of Bits：8
- Number of D/A Converters：2
- Settling Time：2µs
- Output Type：Voltage - Buffered
- Differential Output：No
- Data Interface：Parallel
- Reference Type：External
- Voltage - Supply, Analog：2.7V ~ 5.5V
- Voltage - Supply, Digital：2.7V ~ 5.5V
- INL/DNL (LSB)：±1 (Max), ±1 (Max)
- Architecture：Current Source
- Operating Temperature：-40°C ~ 105°C
- Package / Case：20-SOIC (0.295", 7.50mm Width)
- Supplier Device Package：20-SOIC
- Mounting Type：Surface Mount
- Grade：-
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Overview
The AD7302BRZ is a dual, 8-bit voltage output digital-to-analog converter (DAC) from Analog Devices Inc. It operates on a single +2.7 V to +5.5 V supply and features on-chip precision output buffers that allow rail-to-rail operation. The device utilizes a parallel microprocessor and DSP-compatible interface with high-speed registers and double-buffered logic. Key specifications include a maximum settling time of 2 μs (typically 1.2 μs), relative accuracy of ±1 LSB, and power consumption of less than 10 mW at 3.3 V. It supports both internal and external reference inputs.
Feature Summary
- Dual 8-bit DACs in one package with rail-to-rail output capability
- Parallel interface compatible with standard microprocessors and DSPs
- Internal or external reference selection via REFIN pin
- Power-down mode reduces current consumption to <1 μA
Applications
- Portable battery-powered instruments
- Digital gain and offset adjustment circuits
- Programmable voltage and current sources
- Programmable attenuators
Procurement Notes
Verify the suffix 'RZ' corresponds to the 20-lead SOIC package and B version temperature range (-40°C to +105°C). Confirm RoHS compliance status for the specific manufacturing lot. Ensure ESD precautions are observed during handling as the device is sensitive to electrostatic discharge.
Selection Notes
Select this component when a dual-channel, low-power, 8-bit DAC with parallel interface is required. It is suitable for single-supply applications ranging from 2.7 V to 5.5 V. Consider the 2 μs settling time and ±1 LSB accuracy for system timing and precision requirements. Verify if simultaneous update capability via LDAC is needed for multi-channel synchronization.
Part Context
The AD7302 belongs to the AD7302 series of dual 8-bit DACs. It is available in multiple packages including 20-lead Plastic DIP (BN), SOIC (BR), and TSSOP (BRU). The 'B' designation indicates the commercial temperature range of -40°C to +105°C. The 'RZ' suffix specifically denotes the SOIC package variant.
Replacement Considerations
Direct replacements within the same family include AD7302BN (DIP), AD7302BR (SOIC), and AD7302BRU (TSSOP). These share identical electrical specifications but differ in physical package dimensions.
