The X9523 is an Intersil device released for laser diode control in fiber optic modules. The device has two digitally controlled potentiometers (DCPs), V1/Vcc power-on reset (POR) circuitry, two programmable voltage monitor inputs, and software and hardware indicators. All X9523 functions can be accessed via an industry standard 2-wire serial interface. The DCPs of the X9523 can be used to control the bias and modulation currents of the laser diode in a Fiber Optic module. The programmable POR circuit can be used to ensure that V1/Vcc is stable before power is applied to the laser diode.
The X9523 combines two digitally controlled potentiometers (DCPs), power‑on reset circuitry, and two programmable voltage monitors in a single 20‑lead TSSOP package. It is designed for bias and modulation control of laser diodes in fiber‑optic modules and includes hot‑plug capability.
The device is accessed via a standard 2‑wire (I²C‑compatible) serial interface, supports both volatile and non‑volatile writes, and provides separate reset and write‑protect pins. Detailed pin assignments, command sequences, and timing diagrams are provided for integration.
| Supply Voltage | 2.7 V to 5.5 V |
|---|---|
| Package | 20‑lead TSSOP |
| Operating Temperature | -40 °C to +85 °C |
| Interface | 2‑Wire Industry Standard Serial (I²C compatible) |
The device operates from –40 °C to +85 °C.
It works with a single supply voltage between 2.7 V and 5.5 V.
The X9523 is offered in a 20‑lead TSSOP package.
It uses a 2‑wire industry‑standard serial interface that is I²C compatible.