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2963 |
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| A power-amp designed for use in low voltage, especially battery-operated, applications, such as AM-FM radios, portable tape cassettes, intercoms, power inverters etc. For minimum parts count, C1 and C2 can be omitted. With pins 1 and 8 open circuit the gain is internally set to 20dB. With a 10╡F capacitor between pins 1 and 8 the gain is increased to 200dB and the gain can be set to anything between these limits by placing a resistor in series with this capacitor. For example, a 1k2 resistor here sets the gain to 50dB. The capacitor on pin 7 sets the power supply rejection ratio from 6dB with no connection to 50dB at 1kHz with 10╡F. The inputs are referenced to ground, while the output is automatically biased to half the supply voltage. |
| Maximum supply voltage: |
15V DC |
Output power with 8 load: |
325mW (6V supply) |
| THD at 125mW with 8 load: |
0.2% (6V supply) |
| Input resistance: |
50k |
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