Maxim Integrated DS4422N+T&R Low-Voltage Dual Sinking Current DAC

The DS4422N+T&R from Maxim Integrated is a highly integrated digital-to-analog converter (DAC) designed to deliver precise current control in a compact and efficient package. This device is particularly suited for applications requiring low-voltage operation and accurate current sinking capabilities, making it an ideal choice for power-sensitive and space-constrained applications.

This dual-channel DAC operates from a 2.6V to 5.5V supply voltage, making it versatile for various low-voltage systems. Each output of the DS4422N can sink current up to 200mA, providing ample drive capability for a wide range of peripheral devices. The output current is set via an I2C-compatible serial interface, allowing for easy integration with microcontrollers and other digital systems.

Featuring a compact 3mm x 3mm 10-pin µMAX package, the DS4422N+T&R is designed for minimal footprint on printed circuit boards. The ‘+T&R’ designation indicates that this product is provided in tape and reel packaging, which is optimized for automated pick-and-place manufacturing processes, enhancing production efficiency and reducing manual handling errors.

The DS4422N+T&R includes several features that ensure reliable and stable operation. It has integrated over-temperature protection and a power-on reset function that initializes the DAC outputs to zero current, preventing any unintended high-current output at startup. Its non-volatile memory retains the last programmed current values, allowing the device to resume operation without the need for reprogramming after a power cycle.

Typical applications for the DS4422N+T&R include LED backlighting, OLED displays, and precision current control tasks in portable devices, industrial control systems, and point-of-sale terminals. Its precision current sinking capability also makes it a good fit for calibrating sensors and for use in programmable current sources.

With Maxim Integrated's reputation for quality and reliability, the DS4422N+T&R is a robust and efficient solution for designers looking to add accurate current control to their low-voltage applications.