 English |
|
|
|
|
|
|
|
| U2730B-B Datasheet, PDF (8/12 Pages) TEMIC Semiconductors – L-Band Down-Converter for DAB Receivers | |||
| |||
| ◁ |
U2730B-B
Equivalent Circuits
Gainâ
controlled
mixer
Gainâ
controlled
amplifier
VRef1
8 (12)
IF
output
550MHz
60MHz
VRef2
TH
Rth
Figure 4. AGC contol circuit
AGC
15001
VTune
47k
BBY51
VCC
10p
6.8p
Resonator
10p
1.5p
TANK
REF
100p
15002
Resonator: Siemens Matsushita (λ/4âResonator)
Ceramic Coaxial Resonator 1.6 GHz
B69640âG 1607âB412
Notice: The VCO needs a DCâpath between TANK and VREF-Pin
Figure 5. VCO circuit
Preliminary Information
Rev. A1, 22-Jul-98
|
▷ |
German
Russian
Spanish
Italian
Polish
Chinese
Japanese
Korean
French
Portuguese