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參數(shù)資料
| 型號： | TB1261F |
| 元件分類： | 消費家電 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PQFP80 |
| 封裝： | 14 X 20 MM, 0.80 MM PITCH, PLASTIC, QFP-80 |
| 文件頁數(shù)： | 32/66頁 |
| 文件大?。?/td> | 1538K |
| 代理商： | TB1261F |
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TB1261F/TB1262F
2002-6-30 38 / 66
Note
Items/Symbols
Bus conditions
Measurement methods
S7
AF output signal
amplitude
/ vDet(s)6.5M
AF output S/N
/ S/N(s)6.5M
Total harmonics
distortion
/ THD6.5M
SIF-Freq. : 6.5M
AUDIO ATT :
127
Others : Preset
(1) Input a signal that 6.5[MHz], 100[dB(mV)], 50[kHz] deviated
by 400[Hz] sine wave at pin 73.
(2) Do same measuring as vDet(s)5.5M et al. (vDet(s)6.5M,
S/N(s)6.5M, THD6.5M).
S8
AF output signal
amplitude
/ vDet(s)4.5ML
AF output S/N
/ S/N(s)4.5ML
Total harmonics
distortion
/ THD4.5ML
SIF-Freq. : 4.5M
Au Gain : 1
AUDIO ATT :
127
Others : Preset
(1) Input a signal that 4.5[MHz], 100[dB(mV)], 25[kHz] deviated
by 400[kHz] sine wave at pin 73.
(2) Do same measuring as vDet(s)5.5MH et al. (vDet(s)4.5ML,
S/N(s)4.5ML, THD4.5ML).
S9
AF output signal
amplitude
/ vDet(s)4.5MH
AF output S/N
/ S/N(s)4.5MH
Total harmonics
distortion
/ THD4.5MH
SIF-Freq. : 4.5M
Au Gain : 0
AUDIO ATT :
127
Others : Preset
(1) Input a signal that 4.5[MHz], 100[dB(mV)], 25[kHz] deviated
by 400[Hz] sine wave at pin 73.
(2) Do same measuring as vDet(s)5.5M et al. (vDet(s)4.5MGH,
S/N(s)4.5ML, THD4.5MH).
S10
Limiting sensitivity
/ vin lim(s)4.5MH
/ vin lim(s)4.5ML
/ vin lim(s)5.5M
/ vin lim(s)6.0M
/ vin lim(s)6.5M
SIF-Freq. :
4.5M/5.5M/6.0M/
6.5M
AUDIO ATT :
127
Au Gain : 0/1
Others : Preset
(1) Set the bits of “SIF-Freq.” to “11”, “Au Gain” to “0”.
(2) Input a signal that 4.5[MHz], 100[dB(mV)], 25[kHz] deviated
by 400[Hz] sine wave at pin 73.
(3) Measure the amplitude at pin 65 (vo#65[mVrms]).
(4) Decreasing the 4.5[MHz] signal level, measure the 4.5[MHz]
signal level at which the amplitude at pin 65 turns to be
–3[dB] against “vo#4” (vin lim(s)4.5MH[dB(mV)]).
(5) Input a signal that 4.5[MHz], 100[dB(mV)], 25[kHz] deviated
by 400[Hz] sine wave at pin 73.
(6) Set the bits of “Au Gain” to “1”.
(7) Do same measuring as above (3)~(4) (vin lim(s)4.5ML).
(8) Set the bits of “SIF-Freq.” to “00”.
(9) Change the frequency of the input signal to 5.5MHz, and
change the deviation of the input signal to 50[kHz].
(10) Do same measuring as above (3)~(4) (vin lim(s)5.5M).
(11) Set the bits of “SIF-Freq.” to “01”.
(12) Change the frequency of the input signal to 6.0MHz, and do
same measuring as above (3)~(4) (vin lim(s)6.0M).
(13) Set the bits of “SIF-Freq.” to “10”.
(14) Change the frequency of the input signal to 6.5MHz, and do
same measuring as above (3)~(4) (vin lim(s)6.5M).
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