X9521

Features:

• Two Digitally Controlled Potentiometers (DCP's)
-100 Tap - 10k
-256 Tap - 100k
-Non-Volatile
-Write Protect Function
• 2 kbit EEPROM Memory with Write Protect & Block Lock^TM
• 2-Wire industry standard Serial Interface
-Complies to the Gigabit Interface Converter (GBIC) specification
• Single Supply Operation
-2.7V to 5.5V
• Hot Pluggable
• Packages
-CSP (Chip Scale Package)
-20 Pin 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 = 1,2. Referenced to Vss)		Vcc	V
D.C. Output Current (SDA)	0	5	mA
Lead Temperature (Soldering, 10 seconds)		300	°C
Supply Voltage Limits (Applied Vcc voltage, referenced to Vss)	2.7	5.5	V

Description

The X9521 combines two Digitally Controlled Potentiometers (DCPs), and integrated EEPROM with Block Lock™ protection. All functions of the X9521 are accessed by an industry standard 2-Wire serial interface. The DCPs of the X9521 may be utilized to control the bias and modulation currents of the laser diode in a Fiber Optic module. The 2kbit integrated EEPROM may be used to store module definition data. The features of the X9521 are ideally suited to simplifying the design of fiber optic modules which comply to the Gigabit Interface Converter (GBIC) specification. The integration of these functions into one package significantly reduces board area, cost and increases reliability of laser diode modules.