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Product Detailed Parameters
- Description：IC DAC 8BIT V-OUT 16SOIC
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tube
- Number of Bits：8
- Number of D/A Converters：4
- Settling Time：2µs
- Output Type：Voltage - Buffered
- Differential Output：No
- Data Interface：SPI
- Reference Type：External
- Voltage - Supply, Analog：2.7V ~ 5.5V, ±5V
- Voltage - Supply, Digital：2.7V ~ 5.5V
- INL/DNL (LSB)：±1 (Max), ±1 (Max)
- Architecture：R-2R
- Operating Temperature：-40°C ~ 85°C
- Package / Case：16-SOIC (0.295", 7.50mm Width)
- Supplier Device Package：16-SOIC
- Mounting Type：Surface Mount
- Grade：-
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Overview
The AD7304BRZ is a quad, 8-bit digital-to-analog converter (DAC) from Analog Devices Inc. It operates from single +3 V to +5 V or ±5 V supplies, consuming less than 9 mW at 3 V. The device features rail-to-rail buffered voltage outputs and an external reference input range spanning both supply rails. It utilizes a 3-wire SPI-compatible serial interface with data in (SDI), clock (CLK), and chip select (CS). An internal power-on reset sets outputs to zero scale upon startup.
Feature Summary
- Quad 8-bit DAC architecture with rail-to-rail output buffers
- SPI-compatible 3-wire serial interface for data loading
- Internal power-on reset ensures zero-scale output state
- Low power consumption of less than 9 mW at 3 V supply
Applications
- Automotive output span voltage control
- Instrumentation digitally controlled calibration
- Pin-compatible replacement for AD7226 when VDD < 5.5 V
Procurement Notes
Verify the specific package type against project requirements. The datasheet specifies availability in wide-body 16-lead SOIC (R-16) and thin 16-lead TSSOP (RU-16) packages. Confirm that the ordering suffix corresponds to the desired physical footprint before finalizing procurement.
Selection Notes
Select this component for applications requiring four independent 8-bit channels with high-speed serial control. Ensure the system logic levels match the specified VIL and VIH thresholds. Verify that the external reference voltage remains within the VSS to VDD range to maintain full-scale accuracy.
Part Context
The AD7304 is part of the AD7304/AD7305 family. While the AD7304 uses a serial interface, the parallel counterpart AD7305 shares the same internal DAC design and rail-to-rail performance characteristics. Both devices are designed for low-voltage operation and offer pin compatibility with industry-standard parts under specific conditions.
Replacement Considerations
The AD7304 serves as a direct pin-compatible replacement for the AD7226 when operating with a supply voltage below 5.5 V. Designers should verify that the existing board layout supports the required serial interface signals instead of the parallel bus used by legacy components.
