CXB1818Q データシートの表示（PDF） - Sony Semiconductor

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CXB1818Q

Laser Diode Driver

Sony Semiconductor 

Pin

No.

Typical pin voltage [V]

Symbol

DC

AC

Equivalent circuit

15 CompA

VCC

15

180pF

16

30pF

16 CompB

10k

VEE

CXB1818Q

Description

Modulation current

driver compensation.

Normally, connects

180pF capacitor

between CompA and

CompB pins.

17 Timer

VEE

18 ADCDis

to

VCC

(open)

19 FFSel

VEE

or

open

VCC

Ctimer

17

VEE

100

25µA

2.1k

10pF

2.4k

2.4k

200µA

Capacitor connection

for activity detector

(IN_ALM) operation.

This pin sets the period

of inactive time for

activity detector.

Inactive time is

controlled by connecting

a capacitor to this pin.

VCC

3.8k

3.8k

35k

35k

35k

35k

18

VEE

15µA

Activity detector circuit

control.

High (connected to VCC

or open):

Activity detector is

disable.

Low (connected to VEE):

Activity detector

is enable.

VCC

Input data D-FF

9k 4.5k 4.5k

selection control.

High (open):

FF not used

(Through mode)

19

Low (connect to VEE):

100k

4.5k

4.5k

VEE

FF used

(FF mode)

–4–

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