參數(shù)資料
型號(hào)： 935241860112
廠商： NXP SEMICONDUCTORS
元件分類： 調(diào)諧器
英文描述： 2-BAND, VIDEO TUNER, PDSO24
封裝： PLASTIC, SOT-137, SO-24
文件頁(yè)數(shù)： 3/31頁(yè)
文件大?。?/td> 328K
代理商： 935241860112
1997 Feb 24
11
Philips Semiconductors
Product specication
5 V VHF, hyperband and UHF mixers/oscillators
for TV and VCR 3-band tuners
TDA5736; TDA5737
Fig.5 Input circuit for optimum noise figure in band A.
(b) For fRF = 150 MHz:
mixer A frequency response measured = 150.3 MHz, loss = 1.3 dB
image suppression = 13 dB.
C3 = 5 pF
C4 =25pF
I2 = semi rigid cable (RIM): 30 cm long
I3 = semi rigid cable (RIM): 5 cm long (semi rigid cable (RIM);
33 dB/100 m; 50
; 96 pF/m).
(a) For fRF = 50 MHz:
mixer A frequency response measured = 57 MHz, loss = 0 dB
image suppression = 16 dB.
C1 = 9 pF
C2 =15pF
L1 = 7 turns (diam. = 5.5 mm, wire diam. = 0.5 mm)
I1 = semi rigid cable (RIM): 5 cm long (semi rigid cable (RIM);
33 dB/100 m; 50
; 96 pF/m).
handbook, full pagewidth
MBE286 - 1
L1
C2
C1
PCB
plug
BNC
RIM-RIM
I1
C4
C3
PCB
RIM-RIM
I3
I2
(a)
(b)
Fig.6 Noise figure measurement in band A.
NF = NFmeas loss (input circuit) dB.
handbook, full pagewidth
MBH046
D.U.T.
INPUT
CIRCUIT
(see Fig. 5)
AIN
GND
IFOUT1
IFOUT2
BNC
RIM
NOISE
METER
NOISE
SOURCE
2 x 5
turns
2
turns
TR
N1/N2 = 5
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