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TDA1547 Dataheets PDF



Part Number TDA1547
Manufacturers NXP
Logo NXP
Description Dual top-performance bitstream DAC
Datasheet TDA1547 DatasheetTDA1547 Datasheet (PDF)

INTEGRATED CIRCUITS DATA SHEET TDA1547 Dual top-performance bitstream DAC Product specification File under Integrated Circuits, IC01 September 1991 Philips Semiconductors Product specification Dual top-performance bitstream DAC 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 modulat.

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INTEGRATED CIRCUITS DATA SHEET TDA1547 Dual top-performance bitstream DAC Product specification File under Integrated Circuits, IC01 September 1991 Philips Semiconductors Product specification Dual top-performance bitstream DAC 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 ORDERING INFORMATION EXTENDED TYPE NUMBER TDA1547(1) Note 1. SOT-232-1; 1996 August 23. PACKAGE PINS 32 PIN POSITION SDIL MATERIAL plastic TDA1547 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. CODE SOT232A September 1991 2 Philips Semiconductors Product specification Dual top-performance bitstream DAC TDA1547 handbook, halfpage DGND VDDD IN R n.c. CLK R VDDD R VSSD R Vref R AGND DAC R 1 2 3 4 5 6 7 8 32 31 VSUB VSSD 30 IN L 29 n.c. 28 CLK L 27 26 25 V DDD L V SSD L V ref L AGND DAC L – DAC L + DAC L AGND L TDA1547 9 24 23 22 21 – DAC R 10 + DAC R 11 AGND R 12 n.c. 13 + OUT R 14 – OUT R 15 V SSA 16 MCD294 20 n.c. 19 + OUT L 18 17 – OUT L V DDA Fig.1 Pinning diagram. September 1991 3 Philips Semiconductors Product specification Dual top-performance bitstream DAC PINNING SYMBOL DGND VDDD IN R n.c. CLK R VDDD R VSSD R Vref R AGND DAC R −DAC R +DAC R AGND R n.c. +OUT R −OUT R VSSA VDDA −OUT L +OUT L n.c. AGND L +DAC L −DAC L AGND DAC L Vref L VSSD L VDDD L 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 PIN 0 V digital supply 5 V digital supply for both channels serial one-bit data input for the right channel pin not connected; should preferably be connected to digital ground clock input for the right channel DESCRIPTION TDA1547 5 V digital supply for the right channel; this voltage determines the internal logic HIGH level in the right channel −3.5 V digital supply for the right channel; this voltage determines the internal logic LOW level in the right channel −4 V reference voltage for the right channel switched capacitor DAC 0 V reference voltage for the right channel switched capacitor DAC; this pin should be connected to analog ground output from the right negative switched capacitor DAC; feedback connection for the right negative operational amplifier output from the right positive switched capacitor DAC; feedback connection for the right positive operational amplifier 0 V reference voltage for both right channel operational amplifiers pin not connected; should preferably be connected to analog ground + output of the switched capacitor operational amplifier − output of the switched capacitor operational amplifier −5 V analog supply 5 V analog supply − output of the switched capacitor operational amplifier + output of the switched capacitor operational amplifier pin not connected; should preferably be connected to analog ground 0 V reference voltage for both left channel operational amplifiers output from the left positive switched capacitor DAC; feedback connection for the left positive operational amplifier output from the left negative switched capacitor DAC; feedback connection for left negative operational amplifier 0 V reference voltage for the left channel switched capacitor DAC; this pin should be connected to analog ground −4 V reference voltage for the left channel switched capacitor DAC −3.5 V digital supply for the left channel; this voltage determines the internal logic LOW level in the left channel 5 V digital supply for the left channel; this voltage determines the internal logic HIGH level in the left channel September 1991 4 Philips Semiconductors Product specification Dual top-performance bitstream DAC TDA1547 SYMBOL CLK L n.c. IN L VSSD VSUB PIN 28 29 30 31 32 clock input for.


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