Testing

MSB

LSB

FUNCTION

D7

D6

D5

D4

D3

D2

D1

D0

0

1

Main Testmode Switch

1)

off

on

0

0

0

0

1

1

1

1

0

0

1

1

0

0

1

1

0

1

0

1

0

1

0

1

Test Multiplexer

Compander Log-Amp. Output

Compander Low-Pass Output

Compander DAC Output

internal 200kHz Clock

not allowed

not allowed

internal Bandgap Voltage

not allowed

0

1

Compander Testmode

off

on

0

1

Clock

external

internal

1

1

must be "1"

1) To avoid inadvertently programming of the Main-Testmode as well the Compander testmode it is mandatory to set the Bit 5 in the

subaddress-byte to high at the same time.

=

9V

SE1L

SE1R

100nF

100nF

MD+

MD-

100nF

100nF

CDL+

100nF

CDL-

100nF

TAPEL

TAPER

PHONE+

PHONE-

CDL+

CDL-

CDR-

100nF

CDR-

SUBOUT+

100nF

SUBOUT+

SUBOUT-

100nF

SUBOUT-

OUTRR

OUTLR

OUTLR

OUTRF

OUTRF

OUTLF

OUTLF

22

D98AU867

MUTE

SCL

SDA

SM

SCL

SDA

100nF

PDR

PAUSE

23

9

SE3L

SE3R

100nF

100nF

GND

21

20

19

18

17

25

24

26

OUTRR

CDR+

100nF

CDR+

8

7

6

5

4

3

2

1

47nF

28

27

CREF

10

µF

14

10

µF

+

-

15

16

AMMONO

PAUSE

22

µF

PDGND

10

100nF

PDL

11

100nF

100nF

13

12

SE2R

SE2L

STDL

STDR

EXTR

EXTGND

EXTL

Figure 18. Application Circuit.

TDA7462

23/25