CXA1700AQ Ver la hoja de datos (PDF) - Sony Semiconductor

Número de pieza

componentes Descripción

Fabricante

CXA1700AQ

Luminance and Color Signal Processing for 8mm VCR

Sony Semiconductor 

Pin Description

Pin

Symbol

No.

1 C EMPH

CONT

Pin voltage

DC

AC

Control

—

range:

1.8V to 3.8V

CXA1700AQ/AR

Equivalent circuit

1

150

25µA

Description

Chroma emphasis f0 (center

frequency) adjustment. (Refer

to item 7 on Description of

Operation.)

2 MAIN

2.05V (sync

EMPH

tip level)

150

OUT

1mA

250mVp-p

Output

3 MAIN

2.05V (when

—

EMPH

time constant

TC

connected)

3

Main emphasis and main de-

emphasis time constant.

When recording, the

emphasized Y signal prior to

2 white/dark clipping is output.

Main emphasis and main de-

emphasis time constant. Apply

4k

an external constant between

this pin and Pin 2, as shown

below.

100

2

3

4 SUB

2.05V (when

—

EMPH

time constant

TC

connected)

100

4

5 EMPH IN 2.05V (sync

tip level)

5

500mVp-p

Input

100

150

HPF time constant that forms

sub emphasis and sub de-

emphasis. Add resistance

between this pin and Pin 11.

11

4

VG1

During recording, Y emphasis

input. During playback, this

signal to the noise canceler is

input. Performs diode

clamping (sync tip clamping),

with the clamp capacitance

attached externally.

—4—

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