To line - NT side

A-wire

UIC

LTrep

DOUT

DIN

CL

FR

HYBRID

XTAL2

CLOUT

512KHz

VCO

15.36MHz

PHASE

COMPARATOR

AND LOOP

FILTER(*)

UIC

NTrep

CLOUT

512KHz

15.36MHz

DOUT

DIN

CL

FR

XTAL1

XTAL2

HYBRID

To line - LT side

A-wire

B-wire

B-wire

DC/DC

0V

5V

PLL circuit

50mH

50mH

2.2

µF

2.2

µF

(*)1st order loop filter is sufficient (3dB frequency at 100Hz approx.)

D94TL099

15.36MHz

Figure 5: Repeater Block Diagram.

STU2071

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