LA76835 데이터 시트보기 (PDF) - SANYO -> Panasonic
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LA76835 Datasheet PDF : 50 Pages
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LA76835NM
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 69.
3. Pin 34 = 5V
4. Enter an input signal from pin 66.
Parameter
Maximum gain
Variable range
Frequency
characteristics
Mute
Distortion
Symbol
AGMAX
ARANGE
AF
AMUTE
ATHD
Test point
73
73
73
73
73
Input signal
1kHz, CW
500mVrms
1kHz, CW
500mVrms
20kHz, CW
500mVrms
1kHz, CW
500mVrms
1kHz, CW
500mVrms
Test method
Measure the 1kHz component at the pin 73.
···· V1 [mVrms]
AGMAX = 20Log (V1/500) [dB]
Measure the 1kHz component at the pin 73.
···· V2 [mVrms]
ARANGE = 20Log (V1/V2) [dB]
Measure the 20kHz component at the pin 73.
····V3 [mVrms]
AF = 20Log (V3/V1) [dB]
Measure the 20kHz component at the pin 73.
····V4 [mVrms]
AMUTE = 20Log (V1/V4) [dB]
Measure the distortion of the 1kHz component at
the pin 73.
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
VOLUME = "1111111"
73
73.
····V5 [mVrms]
ASN = 20Log (V1/V5) [dB]
1kHz, CW
Measure the 1kHz component at the pin 73.
73
500mVrms ····V6 [mVrms]
VOLUME = "1111111"
AUDIO.SW = "0"
ACT = 20Log (V1/V6) [dB]
No.7962-14/50
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