3UHOLPLQDU\
2.5Gbps Fiber-Optic Quantizer
CS6723
BLOCK DIAGRAM
GENERAL DESCRIPTION
Century Semiconductor Inc.
FEATURES
APPLICATIONS
USA:
4020 Moorpark Avenue Suite 115
San Jose, CA, 95117
Tel: 408-243-8388 Fax: 408-243-3188
Sales@century-semi.com
Sales@century-semi.com.tw
www.century-semi.com
Rev.0.0 July 2001
page 1 of 1
Century Semiconductor, Inc.
Taiwan:
No. 2, Industry East Rd. 3rd,
Science-Based Industrial Park, Hsin-Chu, Taiwan
Tel: 886-3-5784866 Fax: 886-3-5784349
The CS6723 postamplifier is a high gain, wide
bandwidth limiting amplifier for use in fiber-optic
based communications up to 2.5Gbps. Inputs of the
CS6723 are differential and AC-coupled from the
transimpedance amplifier. Further, the inputs are
self-biased by internal circuits and the input offset
compensation is accomplished by using an external
capacitor between the CAZP and CAZN pins.
The CS6723 includes a user programmable signal
strength detector, enabling the user to set voltage
thresholds at which the logic outputs are enabled.
The link detection output pins (LINKP/LINKN) are
available in both CMOS (CS6723C) and PECL
(CS6723E) output interfaces. Data output of the
CS6702 is differential PECL. The output buffer can
be gated using the JAM pin.
Fully differential architecture. Input Sensitivity
spans 2mV to 500mV.
Minimum 2.5GHz bandwidth with Maximum gain
of 50dB.
Programmable input-signal level detection.
CMOS or PECL link status output.
Pin-compatible with Microcosm MC2046-2.
Supports 3.3 Volt operation.
Available as die or in a QFN package.
CML or PECL data output.
DOUTP
DOUTN
CAZP
LEVEL
DETECTOR
REFERENCE
CIRCUIT
DETECTION
THRESHOLD
PDET
VSET
DINP
DINN
CMP
ECL/CMOS
BUFFER
JAM
LINKP
LINKN
CS6723
10K
10K
10K
10K
BUFFER
AMP
AMP
AMP
ECL
CMP
CAZN
SDH STM-4
SONET OC-12
Gigabit Ethernet
System Interconnect
ATM Optical Receivers
Fiber Channel Optical Receivers
Gigabit Ethernet Optical Receivers
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