Stereo power amplifier - a complete stereo power amplifier on one chip

7-82 — elektor july/august 1982 National Semiconductor"s, LM 2896 contains not one, but, two high performance power amplifiers able to handle supply voltages up to 15 V. With a 12 V supply the IC can deliver 2.5 W per channel into 8 S2. With the same supply and load, it is capable of delivering 9 W in "bridge mode". These are certainly good performance figures, especially when you consider the low number of external components needed. Figure 1 shows the circuit diagram of the complete amplifier. As you will note, the components for each channel are identical. Resistors R1 and R2 together with capacitor C2 form the negative feed- back loop. The band-width of the amplifier is determined by R2 and C3. R3 and C4 ensure maximum gain, specifications stereo supply voltage 3 .. . 15 V quiescent current max. 40 mA output see figure 3 distortion bridge mode stereo power amplifier ■11._ a complete stereo power amplifier on one chip 7 C 100n R3 2200 _____ RI_ 812 DUAL Lc II 16 V 97202 16 ...