Datasheet > MAX3646_11

MAX3646_11

更新时间： 2022-11-17 19:14:26

品牌	Logo	应用领域
美信 - MAXIM		驱动器
页数	文件大小	规格书
15页	296K
描述
155Mbps to 622Mbps SFF/SFP Laser Driver with Extinction Ratio Control

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MAX3646_11 数据手册

155Mbps to 622Mbps SFF/SFP

Laser Driver with Extinction Ratio Control

MAX346

POR AND COUNTER

60ms DELAY

MOD

TX_DISABLE

ENABLE

COUNTER

60ms DELAY

BIAS

100ns DELAY

ENABLE

REF

PC_MON

COMP

PC_MON

LATCH

BIAS

REF

BC_MON

SHUTDOWN

TX_FAULT

BC_MON

CMOS

EXCESSIVE

APC CURRENT

SETPOINT

EXCESSIVE

MOD CURRENT

SETPOINT

TTL

OPEN COLLECTOR

Figure 5. Simplified Safety Circuit

Table 1. Typical Fault Conditions

If any of the I/O pins are shorted to GND or V

exceeds the programmed threshold.

(single-point failure; see Table 2), and the bias current or the photocurrent

End-of-life (EOL) condition of the laser diode. The bias current and/or the photocurrent exceed the programmed threshold.

Laser cathode is grounded and photocurrent exceeds the programming threshold.

No feedback for the APC loop (broken interconnection, defective monitor photodiode), and the bias current exceeds the

programmed threshold.

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