TDA1548T データシートの表示（PDF） - Philips Electronics

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TDA1548T

Bitstream continuous calibration filter-DAC with headphone driver and DSP

Philips Electronics 

Philips Semiconductors

Bitstream continuous calibration filter-DAC

with headphone driver and DSP

BLOCK DIAGRAM

Product specification

TDA1548T

handbook, full pagewidth

12

SYSCLK

17

CLSEL

MODE0 5

6

MODE1

IF1

IF2

DATA

WS

BCK

TIMING

13

14

9

8

7

SERIAL DATA INPUT

VOLUME CONTROL

SOFT MUTE CONTROL

SOUND CONTROL

FILTER STAGE 1

FILTER STAGE 2

LINEAR INTERPOLATOR

16

15

VOLUME 22

AND

SOUND 21

CONTROL 20

19

1 fs VDDA

2 fs

−

18

OP4

+

4 fs

8 fs

VSSA

8 x OVERSAMPLING

(SAMPLE-AND-HOLD)

8 x OVERSAMPLING

(SAMPLE-AND-HOLD)

MUTE

DEEM

AD3S

ADVC

ADBB

ADTR

ADref

2nd ORDER

NOISE SHAPER

DATA

ENCODER

2nd ORDER

NOISE SHAPER

DATA

ENCODER

11

VSSD

10

VDDD

FILTCL 4

1.8 nF

CEXT1

3

VOL

RCONV1

1.2 kΩ

OP1

VDDA

Vref 25

10

µF

6 kΩ

6 kΩ

VSSA

VSSA

1

VSSO

16 (4-bit)

CALIBRATED

CURRENT

SOURCES

LEFT

OUTPUT

SWITCHES

16 (4-bit)

CALIBRATED

CURRENT

SINKS

28

VDDO

REFERENCE

SOURCE

−

OP3

2

VCOM

16 (4-bit)

CALIBRATED

CURRENT

SOURCES

RIGHT

OUTPUT

SWITCHES

16 (4-bit)

CALIBRATED

CURRENT

SINKS

26 FILTCR

RCONV2

1.2 kΩ

−

OP2

+

1.8 nF

CEXT2

27

VOR

TDA1548T

23

24

VDDA VSSA

MGC668

1995 Nov 15

Fig.1 Block diagram.

4

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