February 1991

4

Philips Semiconductors

Product specification

Stereo high performance 16-bit DAC

TDA1541A

PINNING

Note

1. See Table 1 data selection input.

SYMBOL

PIN

DESCRIPTION

1

latch enable input/ word select

input

2

bit clock input

DATA L

3

data left channel input/ data

input (selected format)

4

data right channel input

GND(A)

5

analog ground

AOR

6

right channel output

DECOU

7 to 13

decoupling

GND (D)

14

digital ground

15

−15 V supply voltage

COSC

16,17

oscillator

DECOU

18 to 24 decoupling

AOL

25

left channel output

26

−5 V supply voltage

27

mode select input

28

+5 V supply voltage

Fig.2 Pin configuration

FUNCTIONAL DESCRIPTION

The TDA1541A accepts input sample formats in time multiplexed mode or simultaneous mode up to 16-bit word length.

The most significant bit (MSB) must always be first. The flexible input data format allows easy interfacing with signal

processing chips such as interpolation filters, error correction circuits, pulse code modulation adaptors and audio signal

processors (ASP).

The high maximum input bit-rate and fast setting facilitates application in 8

× oversampling systems

(44.1 kHz to 352.8 kHz or 48 kHz to 384 kHz) with the associated simple analog filtering function (low order, linear phase

filter).

Input data selection (see also Table 1)

With the input OB/TWC connected to ground, data input (offset binary format) must be in time multiplexed mode. It is

accompanied with a word select (WS) and a bit clock input (BCK) signal. The converted samples appear at the output,

at the first positive going transition of the bit clock signal after a negative going transition of the word select signal.

DATA R, accompanied with BCK and a latch-enable input (LE). With this mode selected the data must be in offset binary.

The converted samples appear at the output at the positive going transition of the latch enable signal.

The format of the data input signals is shown in Fig.5 and 6.