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Part Name
Description
STU2071B1 View Datasheet(PDF) - STMicroelectronics
Part Name
Description
MFG CO.
STU2071B1
4B3T U INTERFACE CIRCUIT
STMicroelectronics
'STU2071B1' PDF : 18 Pages
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Figure 5:
Repeater Block Diagram.
STU2071
To line - NT side
A-wire
B-wire
HYBRID
UIC
LTrep
DOUT
DIN
CL
FR
DIN
DOUT
CL
FR
UIC
NTrep
XTAL2
CLOUT
15.36MHz 512KHz
CLOUT
512KHz
XTAL2
XTAL1
15.36MHz
VCO
15.36MHz
PHASE
COMPARATOR
AND LOOP
FILTER(*)
HYBRID
5V 0V
DC/DC
To line - LT side
A-wire
B-wire
PLL circuit
50mH
2.2
µ
F
50mH
(*)1st order loop filter is sufficient (3dB frequency at 100Hz approx.)
2.2
µ
F
D94TL099
7/18
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