X9523
Dual DCP, POR, Dual Voltage Monitors

Key Features

• Two Digitally Controlled Potentiometers (DCPs)
• 100 Tap - 10kΩ
• 256 Tap - 100kΩ
• Nonvolatile
• Write Protect Function
• 2-Wire Industry Standard Serial Interface
• Power-On Reset (POR) Circuitry
• Programmable Threshold Voltage
• Software Selectable reset timeout
• Manual Reset
• Two Supplementary Voltage Monitors
• Programmable Threshold Voltages
• Single Supply Operation
• 2.7V to 5.5V
• Hot Pluggable
• 20 Pin Package
• TSSOP
• Pb-Free Plus Anneal Available (RoHS Compliant)

Description

The X9523 combines two Digitally Controlled Potentiometers (DCPs), V1 / Vcc Power-on Reset (POR) circuitry, qnd two programmable voltage monitor inputs with software and hardware indicators. All functions of the X9523 are accessed by an industry standard 2-Wire serial interface.

The DCPs of the X9523 may be utilized to control the bias and modulation currents of the laser diode in a Fiber Optic module. The programmable POR circuit may be used to ensure that V1 / Vcc is stable before power is applied to the laser diode / module. The programmable voltage monitors may be used for monitoring various module alarm levels.

The features of the X9523 are ideally suited to simplifying the design of fiber optic modules . The integration of these functions into one package significantly reduces board area, cost and increases reliability of laser diode modules.