CXB1572Q Ver la hoja de datos (PDF) - Sony Semiconductor

Número de pieza

componentes Descripción

Fabricante

CXB1572Q

Post amplifier for Optical Fiber Communication Receiver

Sony Semiconductor 

CXB1572Q

Pin Description

Pin No. Symbol

Typical pin

voltage (V)

DC AC

Equivalent circuit

Description

1 VCCP

2 VCCA 0 V

5

32

1

2

Positive power supply for

external power supply.

3 VEEI –3.3 V

VccA

Generates the default voltage

986

between UP and DOWN.

123.4

123.4

31

The voltage (5.3 mV for input

conversion) can be generated

between UP and DOWN

30

(Pins 30 and 31) as alarm setting

Vcs

SW

level 1 by this pin to Open.

The voltage (12 mV for input

conversion) can be generated as

VEEA

alarm setting level 2 by

3

connecting this pin to VEEA.

0V

4

SW

(OPEN)

or

–3.3 V

60k

40k

4

VCCA

VREF

VEEA

Switches the identification

maximum voltage amplitude.

High voltage when open; the

identification maximum voltage

amplitude becomes 50 mVp-p.

Low voltage when connecting

this pin to VEE; the amplitude

becomes 20 mVp-p.

5D

6D

–1.3 V

–1.3 V

–0.9 V

to

–1.7 V

–0.9 V

to

–1.7 V

7 VCCA 0 V

8 CAP1 –1.8 V

100

5

6

100

1.5k

9 R2K

1.5k

10 R3K

11 CAP1 –1.8 V

Limiting amplifier block input.

Be sure to make this input with

AC coupled.

VCCA

10k 100p 200

10k 200

11

3k

10

2k 9

8

VEEA

Positive power supply for analog

block.

Pins 8 and 11 connect a capacitor

which determines the cut-off

frequency for feedback block, and

2 kΩ is connected between Pins 8

and 9; 3 kΩ between Pins 10 and

11. A resistor which is to be

inserted in parallel with a capacitor

can be selected 5 ways by

external wiring, and DC feedback

gain can be varied due to

compensate the input duty cycle

distortion.

—3—

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