This is a simple circuit for correct using of TDA1543, designed by me.
Schematic shows on the picture.
First stage – transistor with common base connecting. Second stage – current mirror using the superior Analog Devices SSM2210 dual transistors. Load of SSM2210 is second current mirror based on BC860C transistors.
Current mirrors established the best excellent sound perfomance among all transistor circuits. It has “soft” limitation of signal, similar as vacuum tube amplifier.
Last stage is D.C. servo drive system. The system provides D.C. stability of circuit and reduces D.C. output voltage. In the system used quality components (BC Components, WIMA, Panasonic) – resistors with 0,1% tolerance and manually matched capacitors with 2% original tolerance. It needs for right working of D.C. servo drive system.
Load of circuit is output resistor. It has function of I-V conversion , also it provides output resistance.
Output resistor – carbon film.
No any filters in sound.
No any feedbacks in sound.
The filters and feedback used in D.C. servo drive system only.
You can connect any transformers (very recommended for galvanic isolation and filtering by transformer, especially if you use non-oversampling mode) to output of the circuit, because D.C. output voltage is zero.
The circuit’s technical data:
Input resistance – approx. 13 Ohm.
Input voltage (this voltage provides for supporting of TDA1543 output) - approx. 2,5 Volts.
Frequency range - 0…2 MHz min.
Slew rate – 50 V/uS (min.value).
Output A.C. voltage with 820 Ohm resistor – approx. 1,6 Volts peak-to-peak with 0 dB level from test CD (1 kHz).
Output resistance – 820 Ohm.
Output D.C. voltage – less than 1 milliVolt.
Power supply:
Operating range – +/- 5…6 Volts.
Recommended power supply to TDA1543 – 5 Volts.
Current consumption – approx. 40 mA per side for both channels.
The circuit assembled with golden plated PCB, tested and ready to use.
Guarented technical support in English and Russian languages.
Also you can see the assembled and checked device in the photos.
If you need to get this board. Location of board is Saint-Petersburg, Russia. Cost of ready to use board is 69 euros (both channels), shipping is not included. Worldwide shipping.
Schematic shows on the picture.
First stage – transistor with common base connecting. Second stage – current mirror using the superior Analog Devices SSM2210 dual transistors. Load of SSM2210 is second current mirror based on BC860C transistors.
Current mirrors established the best excellent sound perfomance among all transistor circuits. It has “soft” limitation of signal, similar as vacuum tube amplifier.
Last stage is D.C. servo drive system. The system provides D.C. stability of circuit and reduces D.C. output voltage. In the system used quality components (BC Components, WIMA, Panasonic) – resistors with 0,1% tolerance and manually matched capacitors with 2% original tolerance. It needs for right working of D.C. servo drive system.
Load of circuit is output resistor. It has function of I-V conversion , also it provides output resistance.
Output resistor – carbon film.
No any filters in sound.
No any feedbacks in sound.
The filters and feedback used in D.C. servo drive system only.
You can connect any transformers (very recommended for galvanic isolation and filtering by transformer, especially if you use non-oversampling mode) to output of the circuit, because D.C. output voltage is zero.
The circuit’s technical data:
Input resistance – approx. 13 Ohm.
Input voltage (this voltage provides for supporting of TDA1543 output) - approx. 2,5 Volts.
Frequency range - 0…2 MHz min.
Slew rate – 50 V/uS (min.value).
Output A.C. voltage with 820 Ohm resistor – approx. 1,6 Volts peak-to-peak with 0 dB level from test CD (1 kHz).
Output resistance – 820 Ohm.
Output D.C. voltage – less than 1 milliVolt.
Power supply:
Operating range – +/- 5…6 Volts.
Recommended power supply to TDA1543 – 5 Volts.
Current consumption – approx. 40 mA per side for both channels.
The circuit assembled with golden plated PCB, tested and ready to use.
Guarented technical support in English and Russian languages.
Also you can see the assembled and checked device in the photos.
If you need to get this board. Location of board is Saint-Petersburg, Russia. Cost of ready to use board is 69 euros (both channels), shipping is not included. Worldwide shipping.
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