AD7305BRU

The AD7305BRU from Analog Devices is a versatile quad, 8-bit digital-to-analog converter (DAC) designed for operation from a single +3 V to +5 V supply or ±5 V supplies. It offers a rail-to-rail reference input to voltage output swing, ensuring maximum dynamic range. The device supports both SPI serial and fast parallel interfaces, making it compatible with a wide range of microcontrollers and systems.

With an 8-bit resolution across four channels, the AD7305BRU is suitable for applications requiring precise analog output control. It operates over a supply voltage range of 2.7 V to 5.5 V and consumes less than 9 mW from a 3 V supply. The internal precision buffers provide rail-to-rail output swing, and an internal power-on reset function sets the output to zero scale upon power-up.

This DAC is pin-compatible with the AD7226 when VDD is less than 5.5 V, offering a potential upgrade path. Applications include automotive output span voltage and instrumentation where digitally controlled calibration is needed. The device's reference multiplying bandwidth is 2.6 MHz, and it features a low power shutdown mode with 40 µA current consumption.