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PT2579 v1.3

- 3 -

April. 2004

RDS Demodulator IC

PT2579

APPLICATION CIRCUIT

QUAL

RDCL

RDDA

T57

VREF

OSC2

MUXL

OSC1

AVDD

DVDD

AVSS

DVSS

CIN

TEST

SCOUT

MODE

560pF

+5V

0.1uF

2.2uF

330pF

MUX

SIGNAL

2.2k

Ω

4.332/8.664MHz

47pF

82pF

0.1uF

+5V

+

1

2

3

4

5

6

7

8

16

15

14

13

12

11

10

9

PT2579

Notes:

1. Two crystal frequencies may be used via the MODE pin. Please refer to the table below.

2. For the 4.332MHz Crystal, it is recommended to use TXC 6A04300098 or a component with the

same specifications.

MODE Pin State

Crystal Clock Frequency (MHz)

LOW

4.332

HIGH

8.664