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參數資料
| 型號： | 935241860112 |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 調諧器 |
| 英文描述： | 2-BAND, VIDEO TUNER, PDSO24 |
| 封裝： | PLASTIC, SOT-137, SO-24 |
| 文件頁數： | 2/31頁 |
| 文件大小： | 328K |
| 代理商： | 935241860112 |
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1997 Feb 24
10
Philips Semiconductors
Product specication
5 V VHF, hyperband and UHF mixers/oscillators
for TV and VCR 3-band tuners
TDA5736; TDA5737
7. The frequency drift is defined as the change in oscillator frequency when the ambient temperature varies from
Tamb =25to0 °C and from Tamb =25to50 °C.
8. Switch-on drift is defined as the change in oscillator frequency between 5 s and 15 mins after switch on.
9. With thermal compensation, the capacitors of the tank circuits have the following temperature coefficients:
a) In band A: C1, C6 and C8 are N750.
b) In band B: C4, C11, C12, C13 and C36 are N750.
c) In band C: C5, C7, C9 and C10 are N750; C2 is N220 and C3 is NP0.
10. SRF: spurious signal on LO with respect to LO output signal:
a) RF level = 120 dB
V at fRF < 180 MHz.
b) RF level = 107.5 dB
V at fRF = 180 to 225 MHz.
c) RF level = 97 dB
V at fRF = 225 to 860 MHz.
Fig.4 Band A gain measurement.
ZI (AIN) >> 50 V i =2 × Vmeas.
Vi =Vmeas + 6 dB.
Vo =V’meas + 15.4 dB (transformer ratio N1/N2 = 5 and transformer loss).
Gv = 20 log (Vo/Vi).
handbook, full pagewidth
MGD264
signal
source
V
D.U.T.
AIN
GND
IF
out
IF
out
e
50
50
50
V
o
2 x 5
turns
2
turns
i
V
meas
V'
RMS
voltmeter
spectrum
analyzer
TR
N1/N2 = 5
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