DAC GX7524 powers optical module design (compatible with ADI‘s AD7524)

Optical module is an important part of the communication system. The transmitting end of the optical module converts electrical signals into optical signals, transmits data through optical fiber, and improves the transmission efficiency. Optical modules are mainly composed of optical transceivers (TOSA, ROSA), driver circuits, CDRs, and control MCUs.

Optical module on the number of DAC needs to be relatively large, especially multi-channel optical transceiver module, the need for the number of DAC is even greater, a separate MCU integrated DAC number often can not meet the requirements of the need to increase the number of external DAC chip for control.GXSC GX7524 (compatible with ADI‘s AD7524), for the optical module to provide a low-cost DAC solution.GX7524 with small size, low power consumption, and wide operating temperature.

The GX7524 is a low-cost, 8-bit, single-chip CMOS DAC for direct interface with most microprocessors.The GX7524 has an input latch with a load cycle similar to the "write" cycle of a random-access memory.The GX7524 utilizes a state-of-the-art CMOS thin-film fabrication process and offers accuracy of 1/8 LSB at power consumption of less than 10 milliwatts.The new and improved design eliminates the need for a Schottky protection diode, which was previously required. The new and improved design eliminates the need for a Schottky protection diode and ensures TTL level compatibility at +5V supply. Load speeds have been increased for compatibility with most microprocessors.

Optical modules increasingly tend to be designed in small packages, and the realization of complex functions in a limited PCB requires a very high device size. the GX7524 (compatible with ADI‘s AD7524) is available in a wide range of packages such as SOP16/DIP16/PLCC20, which is well suited to the application requirements of optical modules.