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參數(shù)資料
| 型號： | TA1272AF |
| 元件分類： | 接收器 |
| 英文描述： | AUDIO/VIDEO DEMODULATOR, PDSO24 |
| 封裝： | 0.300 INCH, 1 MM PITCH, PLASTIC, SSOP-24 |
| 文件頁數(shù)： | 3/17頁 |
| 文件大小： | 462K |
| 代理商： | TA1272AF |
TA1272AF
2001-02-28 11/17
Note 10:
Output voltage at no signal
PIF input : no input IF AGC : GND
Measure output video signal DC voltage.
Note 11:
Black noise inverter level / Black noise clamp level
PIF input : fo = 58.75 MHz, fm = 15.75 kHz, 78%AM, 84 dBV
Supply 0V to IF AGC from external source. Raise that voltage gradually, measure black noise
inverter level.
<SIF circuit>
Note 12:
Output signal voltage
SIF input : fo = 4.5 MHz, fm = 400 Hz, 25 kHz / devi, 84 dBV
Measure output audio signal voltage.
Note 13:
SIF input signal voltage sensitivity
SIF input : fo = 4.5 MHz, fm = 400 Hz, 25 kHz / devi, 84 dBV
Measure output audio signal voltage (that voltage is 0 dB). Lower input SIF signal voltage gradually,
measure input SIF signal voltage when output audio signal voltage is 3 dB.
Note 14:
Total harmonic distortion
SIF input : fo = 4.5 MHz, fm = 400 Hz, 7.5 kHz / devi, 84 dBV
Note 15:
AM Rejection
SIF input :
(1) FM : fo = 4.5 MHz, fm = 400 Hz, 25 kHz / devi, 84 dBV
(2) AM : fo = 4.5 MHz, fm = 400 Hz, 30%AM, 84 dBV
Measure difference of output audio signal voltage between (1) and (2).
Note 16:
Signal-noise ratio
SIF input : fo = 4.5 MHz, fm = 400 Hz, 25 kHz / devi, 84 dBV
Measure audio signal output voltage. : V1 [mVrms]
SIF input : fo = 4.5 MHz, fm = 400 Hz, 25 kHz / devi, 84 dBV
Signal-noise ratio is calculated by following equality.
Signal-noise ratio = 20 og (V1 / V2) [dB]
Note 17:
3 dB bandwidth
SIF input : fo = 4.5 MHz, fm = 400 Hz, 25 kHz / devi, 84 dBV
Measure audio signal output voltage. (that voltage is 0 dB) Then change input signal frequency,
measure bandwidth that audio signal output voltage within 3 dB.
Note 18:
Dependence of output signal voltage on power supply voltage
SIF input : fo = 4.5 MHz, fm = 400 Hz, 25 kHz / devi, 84 dBV
Measure the audio signal output voltage when power supply voltage are 3.5 V and 5.5 V. (4.5 ± 1.0 V)
Compare those voltage and audio signal output voltage when power supply voltage is 4.5 V.
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相關代理商/技術參數(shù) |
參數(shù)描述 |
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| TA1273F | 制造商:TOSHIBA 制造商全稱:Toshiba Semiconductor 功能描述:6-CHANNEL RECORDING AMPLIFIER & PRE-AMPLIFIER FOR VCR |
| TA1274 | 制造商:TOSHIBA 制造商全稱:Toshiba Semiconductor 功能描述:PIF/SIF SYNCHRONOUS DEMODULATOR IC |
| TA1274F | 制造商:TOSHIBA 制造商全稱:Toshiba Semiconductor 功能描述:PIF/SIF SYNCHRONOUS DEMODULATOR IC |
| TA1274F_02 | 制造商:TOSHIBA 制造商全稱:Toshiba Semiconductor 功能描述:PIF / SIF SYNCHRONOUS DEMODULATOR IC |
| TA1275 | 制造商:KEC 制造商全稱:KEC(Korea Electronics) 功能描述:EPITAXIAL PLANAR PNP TRANSISTOR (COLOR TV VERTICAL DEFLECTION OUTPUT, COLOR TV CLASS B SOUND OUTPUT) |
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