X9523

Features:

• Two Digitally Controlled Potentiometers (DCPs)
-100 Tap - 10k
-256 Tap - 100k
-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 packages
-XBGA^TM
-TSSOP




Pinout






Specifications

Parameter	Min.	Max.	Units
Temperature under Bias	-65	+135	°C
Storage Temperature	-65	+150	°C
Voltage on WP pin (With respect to Vss)	-1.0	+15	V
Voltage on other pins (With respect to Vss)	-1.0	+7	V
| Voltage on RHx Voltage on RLx | (x = 0,1,2. Referenced to Vss)		V1/Vcc	V
D.C. Output Current (SDA,V1RO,V2RO,V3RO)	0	5	mA
Lead Temperature (Soldering, 10 seconds)		300	°C
Supply Voltage Limits (Applied V1/Vcc voltage, referenced to Vss)	2.7	5.5	V

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.