U4285BM-AFS datasheet(8/10 Pages) TEMIC

Part #	U4285BM-AFS

Description	AM / FM - PLL

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Manufacturer	TEMIC [TEMIC Semiconductors]

Direct Link	http://www.temic.de

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8 / 10 page

U4285BM

TELEFUNKEN Semiconductors

Rev. A3, 14-May-97

8 (10)

Recommendations for Applications

D C3 = 100 nF should be very close to Pin 1 (VDD) and

Pin 20 (GND 1)

D GND 2 (Pin 10 – analogue ground) and GND 1

(Pin 20 – digital ground) must be connected according

to figure 8

D 4 MHz crystal must be very close to Pin 18 and Pin 19

D Components of the charge pump (C1/R1 for AM and

C2/R2 for FM) should be very close to Pin 14 with

respect to Pin 13.

PCB-Layout

16

15

14

13

12

11

10

9

13

4

25

7

8

6

GND

DD

V

C1

C2

C4

C3

17

18

19

20

95 10124

Figure 8.

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U4285BM-AFS Datasheet(PDF) 8 Page - TEMIC Semiconductors

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