SY88903(2000) 데이터 시트보기 (PDF) - Micrel
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SY88903 Datasheet PDF : 8 Pages
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Micrel
SY88903
PIN NAMES
Pin
DIN
/DIN
LOS LVL
/EN
LOS
GND
DOUT
/DOUT
VCC
VREF
Type
Data Input
Data Input
Input
TTL Input
TTL Output
(Open Collector)
Ground
PECL Output
PECL Output
Power Supply
Output
Function
Data Input
Inverting Data Input
Loss of Signal Level Set
Output Enable (active Low)
Loss of Signal Indicator
(active High)
Ground
Data Output
Inverting Data Output
Positive Power Supply
Reference Voltage Output
for LOS Level Set (see Fig. 3)
GENERAL DESCRIPTION
General
The SY88903 is an integrated limiting amplifier intended
for high-frequency fiber-optic applications. The circuit
connects to typical transimpedance amplifiers found within
a fiber-optics link. The linear signal output from a
transimpedance amplifier can contain significant amounts
of noise, and may vary in amplitude over time. The SY88903
limiting amplifier quantizes the signal and outputs a voltage-
limited waveform.
The TTL /EN pin allows the user to disable the output
signal without removing the input signal.
ABSOLUTE MAXIMUM RATINGS(1)
Symbol
Rating
Value
Unit
VCC
Power Supply Voltage
0 to +7.0
V
DIN, /DIN
Input Voltage
0 to VCC
V
DOUT, /DOUT
Output Voltage (with 50Ω load)
VCC –2.5, VCC +0.3
V
TA
Tstore
Operating Temperature Range
Storage Temperature Range
–40 to +85
°C
–55 to +125
°C
NOTE:
1. Permanent device damage may occur if ABSOLUTE MAXIMUM RATINGS are exceeded. This is a stress rating only and functional operation is not implied
at conditions other than those detailed in the operational sections of this data sheet. Exposure to ABSOLUTE MAXIMUM RATlNG conditions for extended
periods may affect device reliability.
2
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