TDA1373H View Datasheet(PDF) - Philips Electronics

Part Name

Description

Manufacturer

TDA1373H

General Digital Input (GDIN)

Philips Electronics 

Philips Semiconductors

General Digital Input (GDIN)

Product specification

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.

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).

Table 1 Input sample rates

OUTPUT SAMPLE RATE

(kHz)

48

44.1

32

I2S INPUT (kHz)

0.3 to 1.7fso

13 to 83

12 to 76

9 to 55

IEC 958 INPUT (kHz)

0.35 to 1.45fso

16 to 68

15 to 62

12 to 45

60

handbook, full pagewidth

THD N

(dB)

80

MLB956

100

120

140

160

10

10 2

10 3

10 4

f (Hz)

10 5

Measurement done with ‘Audio Precision’.

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

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

1996 Jul 17

8

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