LA76814K Просмотр технического описания (PDF) - SANYO -> Panasonic

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Компоненты Описание

производитель

LA76814K

For NTSC Color Television Sets VIF/SIF/Y/C/Deflection Implemented in a Single Chip

SANYO -> Panasonic 

LA76814

Audio Block Input Signals and Test Conditions

Unless otherwise specified, the following conditions apply when each measurement is made.

1. Bus control condition:

AUDIO.MUTE = "0", AUDIO.SW = "1", VOL.FIL = "0", IF.AGC. = "1"

2. Input 4.5MHz, 90dBµ and CW at pin 54.

3. Enter an input signal from pin 51.

Parameter

Maximum gain

Variable range

Frequency

characteristics

Mute

Distortion

Symbol

AGMAX

ARANGE

AF

AMUTE

ATHD

Test point

1

1

1

1

1

Input signal

1kHz, CW

400mVrms

1kHz, CW

400mVrms

20kHz, CW

400mVrms

1kHz, CW

400mVrms

1kHz, CW

400mVrms

Test method

Measure the 1kHz component at the pin 1.

···· V1[mVrms]

AGMAX = 20Log (V1/400) [dB]

Measure the 1kHz component at the pin 1.

···· V2[mVrms]

ARANGE = 20Log (V1/V2) [dB]

Measure the 20kHz component at the pin 1.

···· V3[mVrms]

AF = 20Log (V3/V1) [dB]

Measure the 20kHz component at the pin 1.

···· V4[mVrms]

AMUTE = 20Log (V1/V4) [dB]

Measure the distortion of the 1kHz component at

the pin 1.

Bus conditions

VOLUME = "1111111"

VOLUME = "0000000"

VOLUME = "1111111"

VOLUME = "1111111"

AUDIO.MUTE = ”1”

VOLUME = "1111111"

S/N

Crosstalk

ASN

ACT

No signal

Measure the noise level (DIN AUDIO) at the pin 1. VOLUME = "1111111"

1

···· V5[mVrms]

ASN = 20Log (V1/V5) [dB]

1kHz, CW

Measure the 1kHz component at the pin 1.

1

400mVrms ···· V6[mVrms]

VOLUME = "1111111"

AUDIO.SW = "0"

ACT = 20Log (V1/V6) [dB]

No.A0253-11/35

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