Datasheet > SRX48-0415

SRX48-0415

更新时间： 2022-02-26 12:47:02

品牌	Logo	应用领域
OPLINK		/
页数	文件大小	规格书
4页	665K
描述
OC-48/STM-16 Receiver without Clock Recovery

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SRX48-0415 数据手册

SRX48

Application Notes

The receiver converts the incident optical power to a is temperature compensated to ensure stable operation over

photocurrent via a high performance P-I-N photodiode (Short the entire operating temperature range.

and Intermediate Reach version) or an avalanche photodiode

The DATA outputs are differential signals designed to

(Long Reach version). For the Short and Intermediate Reach

be AC-coupled into 50 ohm load. Transmission lines are

version, the photocurrent can be monitored via the voltage

recommended for best performance.

drop across an external resistor connected between PM+

The Signal Detect circuit monitors the level of the incoming

and V_CC. For the Long Reach version, the photocurrent can

optical signal and generates a TTL logic LOW signal at the

be monitored via the diﬀerential voltage across the two PM+

SIGNAL DETECT output when insuﬃcient photocurrent is

and PM- output pins. It is important to note that the Common

produced. No termination resistor is required for the SIGNAL

Mode voltage of these two monitor outputs (i.e. DC voltages

DETECT output.

at PM+ and PM-) is high (- 60 V typical). The APD Bias Voltage

External

Monitor Resistor

(3 Kohm recommended)

PM+

APD

10 KΩ

PM+

1 KΩ

10 KΩ

PM-

PD Current

Monitor

APD Bias

Supply

SRX-48

SHORT & INTERMEDIATE REACH

LONG REACH

Interface Circuit

The AC coupling capacitor is typically

0.022 F for 2.48 Gb/s. If operation at

lower data rates is required, a parrallel

combination of 0.022 F &

0.22 F (or larger) is recommended

1 µH coil or ferrite bead

(<0.2 ohm series resistance)

+5V

100

0.01

17,18

50 ohm line

0.01

DATA+

to 50 ohm load

SRX-48

for LR only

DATA-

to 50 ohm load

PM-

for SR & IR only

+5V

SIGNAL DETECT

0.01

4,5,6,7,11,12,13

14,15,16,19,21

Oplink Communications, Inc.

R5.2008.04.30

1 234

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