参数资料
型号: TA1290FN
元件分类: 消费家电
英文描述: SPECIALTY CONSUMER CIRCUIT, PDSO16
封装: 0.225 INCH, 0.65 MM PITCH, PLASTIC, SSOP-16
文件页数: 11/13页
文件大小: 341K
代理商: TA1290FN
TA1290FN
2001-02-26 7/13
TEST CONDITION
Note 1:
Input signal voltage sensitivity
PIF input : fp = 58.75MHz, fm = 15.75kHz, 30%AM, 84dBV
Measure output video signal voltage (15-a, that voltage is 0dB). Lower input signal voltage
gradually, measure input PIF signal voltage when output video signal voltage is 3dB.
Note 2:
Maximum input signal voltage
PIF input : fp = 58.75MHz, fm = 15.75kHz, 30%AM, 84dBV
Raise input signal voltage gradually, measure input PIF signal voltage (15-a) when output video
signal voltage is at the noise inverter threshold.
Note 3:
Differential gain / Differential phase
PIF input : fp = 58.75MHz, Standard television signal (V / S = 10 : 4 ramp waveform), 87.5%AM,
84dBV
IF AGC : free
Measure deferential gain and deferential phase (15-b).
Note 4:
Output voltage at no signal
PIF input
: no input
IF AGC
: GND
Measure output video signal DC voltage (15-b).
Note 5:
Sync. voltage level
PIF input : fp = 58.75MHz, Standard television signal (V / S = 10 : 4 ramp waveform), 87.5%AM,
84dBV
Measure sync. voltage level (15-b).
Note 6:
Output signal voltage
PIF input : fp = 58.75MHz, Standard television signal (V / S = 10 : 4 ramp waveform), 87.5%AM,
84dBV
Measure output video signal voltage (15-b).
Note 7:
Noise inverter
PIF input : fp = 57~65MHz (sweep signal), 84dBV.
Connect monitor scope to video output (15-b). Supply DC voltage to 2nd AGC from external source.
Controlling that voltage, measure noise inverter and clamp level when a waveform like that in the
following figure is output.
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