GTD18447 Rev.1.1
Electronic Components
This version: Nov.
2001
KGL4219
Preliminary
Limiting Amplifier IC
DESCRIPTION
KGL4219, Limiting Amplifier IC with 0.18um gate length GaAs MESFETs, is designed for 10Gb/s digital
communication systems. By using DCFL(Direct Coupled FET Logic), high speed operation of 10Gb/s and low
power dissipation have been realized. Capacitive coupling is recommended for I/O connections. Complimentary
output Q, QN are fixed high and low , respectively when data loss is detected by the internal power detector.
FUNCTION DIAGRAM
ABSOLUTE MAXIMUM RATINGS
Items
Symbol
Min.
Max.
Units
Supply Voltage
VDD
--0.3
2.3
V
Applied Voltage at DIN, DR1
VDI
--0.3
1.5
V
Applied Voltage at DR2
VRI
--2.5
2.5
V
Temperature at Package Base under Bias
Ts
--45
100
C
Storage Temperature
Tst
--45
125
C
ELECTRICAL CHARACTERISTICS
VDD = 2 V
0.1 V, Ts = 0 to 70C
Items
Symbol
Min.
Typ.
Max.
Units
Maximum Operating Data Bit Rate
DAR
10
Gb/s
Power Dissipation
PW
0.28
0.38
W
Data Input Voltage Swing
VI
0.02
0.6
Vpp
Data Output Voltage Swing
VO
0.4
0.6
0.9
Vpp
Data Loss Threshold of Voltage Swing
VDT
T.B.D
5
T.B.D
mVpp
DIN:
Data Input
DR1:
RF Bypass for Data Threshold Level Stability
DR2:
Data Threshold Control ( Duty Cycle Control )
DL:
Power Detector Output (Terminate with capacitor)
Q, QN: Complimentary Data Outputs
VDD:
Power Supply
DR1
DIN
DR2
DL
VDD
VDD
QN
Q
-
+
50
Power
Detector
VDD
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