TDA1547 データシートの表示（PDF） - Philips Electronics

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TDA1547

Dual top-performance bitstream DAC

Philips Electronics 

Philips Semiconductors

Dual top-performance bitstream DAC

Product specification

TDA1547

FEATURES

• Top-grade audio performance

– very low harmonic distortion

– high signal-to-noise ratio

– wide dynamic range of approximately 108 dB

(not A-weighted)

• High crosstalk immunity

• Bitstream concept

– high over-sampling rate up to 192 fs

– pulse-density modulation

– inherently monotonic

– no zero-crossing distortion

GENERAL DESCRIPTION

The TDA1547 is a dedicated one-bit digital-to-analog

converter to facilitate a high fidelity sound reproduction of

digital audio. The TDA1547 is extremely suitable for use in

high quality audio systems such as Compact Disc and

DAT players, or in digital amplifiers and digital signal

processing systems. The TDA1547 is used in combination

with the SAA7350 bitstream circuit, which includes the

third-order noise shaper. The excellent performance of the

SAA7350 and TDA1547 bitstream conversion system is

obtained by separating the noise shaping circuit and the

one-bit conversion circuit over two IC's, thereby reducing

the crosstalk between the digital and analog parts. The

TDA1547 one-bit converter is processed in BIMOS. In the

digital logic and drivers bipolar transistors are used to

optimize speed and to reduce digital noise generation. In

the analog part the bipolar transistors are used to obtain

high performance of the operational amplifiers. Special

layout precautions have been taken to achieve a high

crosstalk immunity. The layout of the TDA1547 has fully

separated left and right channels and supply voltage lines

between the digital and analog sections.

ORDERING INFORMATION

EXTENDED TYPE

NUMBER

TDA1547(1)

PINS

32

Note

1. SOT-232-1; 1996 August 23.

PIN POSITION

SDIL

PACKAGE

MATERIAL

plastic

CODE

SOT232A

September 1991

2

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