TDA1373H datasheet(8/40 Pages) PHILIPS

Il numero della parte	TDA1373H

Spiegazioni elettronici	General Digital Input GDIN

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Produttore elettronici	PHILIPS [NXP Semiconductors]

Homepage	http://www.nxp.com

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8 / 40 page

1996 Jul 17

8

Philips Semiconductors

Product speciﬁcation

General Digital Input (GDIN)

TDA1373H

FUNCTIONAL DESCRIPTION

Operating modes

SAMPLE RATE CONVERSION (SRC) MODE

The output sample rate is determined by a crystal and can

be chosen up to 49 kHz. The range of input sample rates

for a given output sample rate is given in Table 1. A pitch

variation (‘Varispeed’) of

±12% around the nominal input

sample rate can be tracked.

Table 1

Input sample rates

OUTPUT SAMPLE RATE

(kHz)

I2S INPUT (kHz)

0.3 to 1.7fso

IEC 958 INPUT (kHz)

0.35 to 1.45fso

48

13 to 83

16 to 68

44.1

12 to 76

15 to 62

32

9to55

12to45

Data path (see Fig.4)

The input signal at sample frequency fsi comes in via one

of the DI1 inputs (IEC 958) or via the serial input DI2X.

The signal passes through the FIFO/GAIN part and is

interpolated in the up-sampling filters. The actual sample

rate conversion takes place in the variable hold block. The

down-sampling filters decimate the sample frequency to

fso and after in-band noise shaping, the output signal is

present at serial output DO1. Additionally the converted

signal is available at the ‘analog’ Bitstream outputs AOL,

AOR and at the serial digital output DO2 (4fso).

handbook, full pagewidth

160

60

10 5

MLB956

10 4

10 3

10 2

10

140

120

100

80

THD N

(dB)

f (Hz)

Fig.3 Total harmonic distortion plus noise as a function of frequency.

Measurement done with ‘Audio Precision’.

SRC mode; 48 to 44.1 kHz; 20-bit output.

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