TDA1541A Просмотр технического описания (PDF) - Philips Electronics

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TDA1541A

Stereo high performance 16-bit DAC / 28PIN DIP Type

Philips Electronics 

Philips Semiconductors

Stereo high performance 16-bit DAC

Product specification

TDA1541A

PINNING

SYMBOL

LE/WS(1)

BCK(1)

DATA L

/DATA(1)

DATA R(1)

GND(A)

AOR

DECOU

GND (D)

VDD2

COSC

DECOU

AOL

VDD1

OB/TWC(1)

VDD

PIN

DESCRIPTION

1

latch enable input/ word select

input

2 bit clock input

3

data left channel input/ data

input (selected format)

4 data right channel input

5 analog ground

6 right channel output

7 to 13 decoupling

14 digital ground

15 −15 V supply voltage

16,17 oscillator

18 to 24 decoupling

25 left channel output

26 −5 V supply voltage

27 mode select input

28 +5 V supply voltage

Note

1. See Table 1 data selection input.

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.

With OB/TWC connected to VDD the mode is the same but the data format must be in the two’s complement.

When input OB/TWC input is connected to VDD1 the two channels of data (L/R) are input simultaneously via DATA L and

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.

February 1991

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