Low-Noise Amplifier Type Tda7232

The TDA7232 was developed by SGS-Ates in co-operation with American car audio specialists Bose for use in car hi-fi installations, but it can also be used in domestic hi-fi sys- tems. In car hi-fi units, the IC is used as a pre-amplifier in conjunc- tion with SGS-Ates" digital amplifier IC Type TDA7260. The on-board limiter then has the task of preventing the out- put amplifier being overdriven. The three internal opamps are used mainly to form an equal- izer to flatten the frequency response of the output signal. When the chip is used in gen- eral-purpose amplifiers, mixer units, or active cross-over filters, its symmetrical input is a par- ticularly valuable asset. Further- more, it requires only a simple, unregulated power supply. The on-board opamps enable the TDA7232 to take care of the complete signal processing (filtering and power limiting) in an active subwoofer system. The block schematic of the IC together with the external com- ponents required in its primary applicati...