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Page 13 of 19

Issue A

LANSDALE Semiconductor, Inc.

ML3371, ML3372

455 Khz ceramic filter

Volume

Squelch

SPI

C23

1uF

+V

V2

5V

C22

.001uF

D1

1N914

C21

.1uF

C14

.001uF

C13

.022uF

C12

.22uF

R15

1k

R14

510k

R13

4.7k

R12

3.3kk

R11

4.7k

R5

100k

P1

C9

.1uF

C8

.1uF

C7

.1uF

R1

20k

C6

150pF

L2

1uH

+V

V1

10V

C5

33pF

C4

33pF

L1

1uH

C3

47pF

C2

1nF

C1

15pF

U1

cerfil

U2

C10

1nF

L3

1uH

D2

MV209

J2

U3

C20

.1uF

C19

.1uF

C18

1nF

XTAL2

1.000MHZ

C17

27pF

C16

27pF

+V

V3

5V

C15

.1uF

R10

10k

R9

3.3k

R8

10k

R7

2.7k

R6

1Meg

R2

10k 40%

C 11

.1uF

R3

51k

R4

10k 40%

Figure 11b. Typical Application using PLL ML145170 Device Allowing Multiple Channel Operation.