AD7303BRM-REEL7

Overview

The AD7303BRM-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 rail-to-rail output capability with an internal reference or external reference input. The device utilizes a versatile 3-wire serial interface compatible with SPI, QSPI, Microwire, and DSP standards, supporting clock rates up to 30 MHz. Key electrical parameters include a typical settling time of 1.2 μs, a maximum power consumption of 2.3 mA at 3.3 V, and a full power-down current of typically 80 nA. It is housed in an 8-lead microSOIC package.

Feature Summary

• Dual 8-bit DACs with rail-to-rail output buffers in a single 8-pin package
• Versatile 3-wire serial interface compatible with SPI, QSPI, Microwire, and DSP standards
• Internal or external reference capability with individual DAC power-down functions
• Low power operation: typically 15 mW at 5.5 V and less than 3 μW in full power-down mode

Applications

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

Procurement Notes

Verify the specific suffix 'RM' corresponds to the microSOIC package variant when sourcing. Confirm RoHS compliance status for the REEL7 packaging configuration against current manufacturer documentation. Ensure the operating temperature range aligns with the B version specification of -40°C to +105°C for the intended application environment.

Selection Notes

Select this component for applications requiring dual low-resolution DAC outputs with minimal power consumption. The internal reference simplifies design by eliminating external reference components, though external references are supported for higher precision needs. The serial interface compatibility allows direct connection to various microcontrollers and DSPs without additional logic gates.

Part Context

The AD7303 series includes variants such as the AD7303BN (DIP), AD7303BR (SOIC), and AD7303BRM (microSOIC). The BRM designation specifically indicates the microSOIC package option. The REEL7 suffix denotes tape and reel packaging suitable for automated surface-mount assembly processes.

Replacement Considerations

Direct pin-compatible replacements within the same family include AD7303BR and AD7303BN, differing primarily in package type. Verify that any substitute maintains the 8-bit resolution, serial interface timing requirements, and power-down current specifications.