AD7303BRZ-REEL7

Overview

The AD7303BRZ-REEL7 is a dual, 8-bit voltage output digital-to-analog converter (DAC) from Analog Devices. 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 voltage swing. The device utilizes a versatile 3-wire serial interface compatible with QSPI, SPI, Microwire, and DSP standards, supporting clock rates up to 30 MHz. Key specifications include a typical settling time of 1.2 μs, ±1 LSB relative accuracy, and individual DAC power-down capabilities. The internal reference can be selected via the control register, or an external reference between 1 V and VDD/2 can be applied.

Feature Summary

• Dual 8-bit DACs with rail-to-rail buffered outputs in a compact package
• Single-supply operation (+2.7 V to +5.5 V) with low power consumption (typically 15 mW at 5.5 V)
• Internal or external reference selection capability via control register
• Individual power-down for each DAC, reducing current to typically 80 nA when fully powered down

Applications

• Portable battery-powered instruments
• Digital gain and offset adjustment circuits
• Programmable voltage and current sources
• Programmable attenuators

Procurement Notes

Verify the specific package type associated with the BRZ suffix against the manufacturer's ordering guide, as the datasheet lists SOIC-8 (R) and microSOIC-8 (RM) options for the B version. Confirm that the REEL7 suffix corresponds to tape-and-reel packaging if reel quantity is required for assembly. Ensure the operating temperature range of -40°C to +105°C meets system requirements.

Selection Notes

Select this component for applications requiring dual independent 8-bit DACs with high-speed serial interfacing. The internal reference simplifies design by eliminating external reference components, though external references are supported for higher precision needs. Consider the 1.2 μs settling time and ±1 LSB linearity for signal integrity requirements. The low power-down current makes it suitable for battery-operated devices where standby power is critical.

Part Context

The AD7303 series includes variants such as the AD7303BN (DIP), AD7303BR (SOIC), and AD7303BRM (microSOIC). The 'B' designation indicates the industrial temperature range (-40°C to +105°C). The AD7303 is part of Analog Devices' portfolio of low-power data converters designed for portable and battery-driven applications.

Replacement Considerations

Publicly confirmed substitute part numbers are not provided in the source material.