TDA7212 Datasheet, PDF (3/4 Pages) STMicroelectronics – LOW VOLTAGE FM XTAL CONTROLLED FRONT-END

TDA7212
FRONT-END CORDLESS APPLICATION
22nF
49MHz
IN
3.3pF
18pF
22nF
1
L2
2
3
39pF
38.3
MHz
L3
47pF
2
3
6
78
15pF
L1
1
390pF
TDA7212
+V _S
22nF
FM2
15kΩ
5
4
SFE ^OUT
10.7
300Ω
L1 = L3 = TOKO E521LN 110033
7212-04
NB. : In this application it is advisable to decrease the gain of the front-end through a tapping on the L2 coil (3 turns of 12). So it can be ob-
tained: better selectivity, improve d intermodulation performance, better match ing with the following block that are IC’s design ed for double
conversion radio receivers.
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