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<strong>MAX3738</strong><br />

1Gbps 2.7Gbps SFF/SFP<br />

4.<br />

APC<br />

HFAN-02.2.1<br />

IN+<br />

IN-<br />

TX_FAULT<br />

TX_DISABLE<br />

RPC_MON<br />

RBC_MON<br />

SHUTDOWN<br />

PC_MON<br />

BC_MON<br />

RPULL = 45kΩ<br />

IMD<br />

1<br />

IBIAS<br />

82<br />

TH_TEMP<br />

RTH_TEMP<br />

INPUT BUFFER<br />

(η)<br />

PAVG = IMD / ρ MON<br />

PP-P = η x IMOD<br />

SAFETY LOGIC<br />

AND<br />

POWER DETECTOR<br />

T > TTH<br />

VCC<br />

T<br />

xTC<br />

MODTCOMP<br />

RMODTCOMP<br />

Maxim<br />

IMOD<br />

ENABLE<br />

IBIAS<br />

ENABLE<br />

<strong>MAX3738</strong><br />

RMO<strong>DS</strong>ET<br />

(K)<br />

K = ∆IMOD / ∆IBIAS<br />

(TTH) <strong>MAX3738</strong><br />

8 _______________________________________________________________________________________<br />

DATA<br />

PATH<br />

MO<strong>DS</strong>ET<br />

x268<br />

VBG<br />

MODBCOMP<br />

xK<br />

IBIAS<br />

APCFILT1 APCFILT2<br />

RMODBCOMP<br />

CAPC<br />

VCC<br />

x1/2<br />

VBG<br />

IAPCSET<br />

x1<br />

IMOD<br />

SHUTDOWN<br />

OUT-<br />

OUT+<br />

BIAS<br />

APCSET<br />

MD<br />

RD<br />

IBIAS<br />

RAPCSET<br />

IMD<br />

VCC<br />

CMD

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