Fig.4 test circuit – Philips TDA1597 User Manual

Page 10

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1997 Feb 27

10

Philips Semiconductors

Product specification

IF amplifier/demodulator for FM radio receivers

TDA1597

Fig.4 Test circuit.

The pin numbers given in parenthesis refer to the TDA1597.

switch S4 (MODE):

(1) FM-MUTE-OFF.

(2) FM-MUTE-ON.

(3) FM-OFF.

handbook, full pagewidth

MED832

(1)

1

(2)

2

(3)

3

20

(18)

(4)

4

(5)

5

(6)

6

(7)

7

S4

100

nF

(1)

(3)

(2)

(8)

8

(9)

10

11

(10)

12

+

5 V

STOP-1

STOP-0

Vmute

13

(11)

14

(12)

15

(13)

16

(14)

17

(15)

9

n.c.

n.c.

level (weighted)

level (unweighted)

VoAF (unweighted)

VoAF (weighted)

Vref (3.7 V)

10

220 k

3.9 k

10 k

S3

S2

4.7

nF

100 nF

(

+

8.5 V)

VP

S1

3.3

k

100

pF

220

nF

47
nF

22 nF

IF = 10.7 MHz

22 nF

R1

150

R2

50

27

k

18

(16)

19

(17)

27

k

IF

QL = 19

TDA1597T

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