TDA2050

LINEAR INTEGRATED CIRCUIT

UNISONICTECHNOLOGIESCO.,LTD

4

www.unisonic.com.tw

QW-R107-036,A

TYPICAL APPLICATION CIRCUIT

FOR SPLIT SUPPLY APPLICATION SUGGESTIONS

+

-

R4

2.2Ω

C7

0.47μF

C3

100nF

C5

220μF

R3

22kΩ

3

4

2

C4

100nF

C6

220μF

C2

22μF

R2

680Ω

1

C1

22μF

R1

22kΩ

5

UTC

TDA2050

Figure.1 Split Supply Typical Application Circuit

The following table demonstrates the recommended values of the external components are those shown

on above circuit. Different values can be used.

RECOMMENDED VALUE

COMPONENT

PURPOSE

TYPICAL

LARGER

SMALLER

R1

Input Impedance

22kΩ

Increase of Input Impedance Decrease of Input

Impedance

R2

Feedback Resistor

680Ω

Decrease of Gain*

Increase of Gain

R3

22kΩ

Increase of Gain

Decrease of Gain*

R4

Frequency Stability

2.2Ω

Danger of Oscillations

C1

Input Decoupling DC

1µF

Higher Low-frequency cut-off

C2

Inverting Input DC

Decoupling

22µF

Increase of Switch ON/OFF

Noise

Higher Low-frequency cut-off

C3, C4

Supply Voltage Bypass

100nF

Danger of Oscillations

C5, C6

Supply Voltage Bypass

220µF

Danger of Oscillations

C7

Frequency Stability

0.47µF

Danger of Oscillations

* The gain must be higher than 24dB