TRSF3238CDBR

TRSF3238CDBR Application Field and Working Principle

TRSF3238CDBR is a digital optoisolator (digital isolator) series from Texas Instruments, combining a transmitter and a receiver with a single package. With its low power dissipation, wide voltage operation range, solid isolation and high data rate, TRSF3238CDBR is an excellent choice of signal isolator among numerous digital isolators. This article introduces the application field and working principle of TRSF3238CDBR.

Application Field

The TRSF3238CDBR digital optoisolator is a great choice for signal isolation in a wide range of applications. The built-in transmitter is able to send a signal to the receiver part with large isolation voltage, making it suitable for safety isolated applications such as medical, industrial control, automation and motor control. The device also features high data rate, low power consumption, small size and low EMI, making it very suitable for consumer goods, telecom and automotive applications.

Working Principle

TRSF3238CDBR is a bidirectional digital optoisolator. Its major components includes a transmitter and a receiver, which are separated by an insulation layer (the optocoupler). The device works by harnessing the properties of light energy. The input signal to the transmitter is converted into light energy which then passes through the isolation layer. On the other end, the receiver is triggered by the light energy and provides the required output signal.

The transmitted light energy is converted into electrical energy by the receiver and passes the signal through the output pins. In order to enhance isolation, a “latch” mechanism is employed, which continuously monitors the input signal and keeps the output state unchanged when the input signal is in idle state.

The device also features a wide voltage operation range, up to 2.75V to 5.25V. This makes it suitable for a wide range of applications and supply voltage conditions. The device is also low in power consumption and features a very low EMI.

Conclusion

TRSF3238CDBR is a bi-directional digital optoisolator series from Texas Instruments, featuring a low power dissipation, wide voltage operation range, solid isolation, and high data rate. The device is an excellent choice of signal isolator for numerous applications such as medical, industrial control, automation, motor control and more. The device works by converting the input signals into light energy and harvesting the light energy on the other end, allowing reliable isolation between the input and output signals.