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參數(shù)資料
| 型號： | LA76850 |
| 廠商： | Sanyo Electric Co.,Ltd. |
| 英文描述： | Monolithic Linear IC Black & White Television IC |
| 中文描述： | 單片線性集成電路黑色 |
| 文件頁數(shù)： | 12/31頁 |
| 文件大小： | 295K |
| 代理商： | LA76850 |
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LA76850
NoA0017-12/31
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", A.MONI.SW = "0", AUDIO.SW = "1", VOL.FIL = "0", SIF.SYS = "01", IF.AGC.SW = "1"
2. Input 5.5MHz, 90dB
μ
and CW at pin 54.
3. Enter an input signal from pin 51.
Input signal
Symbol
Test point
Input signal
Test method
Bus conditions
Maximum gain
AGMAX
1kHz, CW
500mVrms
Measure the 1kHz component (V1: mVrms) at
the pin 1 and calculate as follows:
AGMAX = 20*LOG(V1/500) [dB]
Measure the 1kHz component (V2: mVrms) at
the pin 1 and calculate as follows:
ARANGE = 20*LOG(V1/V2) [dB]
Measure the 20kHz component (V3: mVrms) at
the pin 1 and calculate as follows:
AF = 20*Log(V3/V1) [dB]
Measure the 20kHz component (V4: mVrms) at
the pin 1 and calculate as follows:
AMUTE = 20*Log(V3/V4) [dB]
Measure the distortion of the 1kHz component at
the pin 1.
Measure the noise level (DIN AUDIO, V5: mVrms)
at the pin 1 and calculate as follows:
ASN = 20*log(V1/V5) [dB]
Measure the 1kHz component (V6: mVrms) at
the pin 1 and calculate as follows:
ACT = 20*LOG(V1/V6) [dB]
VOLUME =
"1111111"
Variable range
ARANGE
1kHz, CW
500mVrms
VOLUME =
"0000000"
Frequency
characteristics
AF
20kHz, CW
500mVrms
VOLUME =
"1111111"
Mute
AMUTE
20kHz, CW
500mVrms
VOLUME =
"1111111"
AUDIO.MUTE = ”1”
VOLUME =
"1111111"
VOLUME =
"1111111"
Distortion
ATHD
1kHz, CW
500mVrms
No signal
S/N
ASN
Crosstalk
ACT
1kHz, CW
500mVrms
VOLUME =
"1111111"
AUDIO.SW = "0"
1
1
1
1
1
1
1
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