OQ2541U

Features:

· Data and clock recovery up to 2.5 Gbits/s
· Multirate configurable (155, 622, 1250 or 2500 Mbits/s)
· Differential data input with 2.5 mV (p-p) typical sensitivity
· Differential Current-Mode Logic (CML) data and clock outputs with 50 W driving capability
· Adjustable CML output level
· Loop mode for system testing
· Bit error rate related loss of signal detection
· Few external components needed
· Single supply voltage
· Power dissipation 350 mW (typical value)
· LQFP48 plastic package.


Application

· Data and clock recovery in STM1/OC3, STM4/OC12 and STM16/OC48 transmission systems
· Data and clock recovery in Gigabit Ethernet (GE) transmission systems.


Pinout




Specifications

SYMBOL	PARAMETER	MIN.	MAX.	UNIT
VEE	supply voltage	-6	+0.5	V
Vn	DC voltage on pins CLOOP, CLOOPQ, DLOOP, DLOOPQ, CREF, CREFQ, DIN, DINQ, DOUT, DOUTQ, COUT and COUTQ ENL, LOCK and LOS, DREF19, DREF39, DOUT1250, DOUT622, DOUT155, PC and AREF CAPUPQ and CAPDOQ	-1 VEE - 0.5 VEE - 0.5 VEE + 0.5	+0.5 +0.5 +5.5 0.5 -0.5	V V V V V
In	input current on pins ENL CREF, CREFQ, DIN and DINQ	- -20	1 +10	mA mA
Ptot	total power dissipation	-	700	mW
Tamb	ambient temperature	-40	+85
Tj	junction temperature	-40	+110
Tstg	storage temperature	-65	+150

Description

The OQ2541U is a data and clock recovery IC intended for use in Synchronous Digital Hierarchy (SDH) and Synchronous Optical Network (SONET) systems.

The circuit OQ2541U recovers data and extracts the clock signal from an incoming bitstream up to 2.5 Gbits/s. It can be configured for use in STM1/OC3, STM4/OC12, STM16/OC48 and Gigabit Ethernet systems.