Audio ICs Pre / power amplifier for 1.5V headphone stereos BA3632K The BA3632K is a dual-channel pre / power system IC designed for 1.5V headphone stereos. There is no need for DC / DC conversion, and the system can operate off a single battery. The IC draws low current (ICC = 2.6mA) to allow long set life. Applications 1.5V headphone stereos. Features 1) Dual pre-amplifiers with auto reverse compatibility. 2) Dual power amplifiers. 3) Bass boost circuit (variable bass boost). 4) AMS circuit (on chip comparator). 5) Ripple filter. 6) Low power consumption (ICC = 6.8mA, 0.5W 2ch, RL = 32Ω). Absolute maximum ratings (Ta = 25C) Recommended operating conditions (Ta = 25C) 849 Audio ICs Block diagram 850 BA3632K Audio ICs BA3632K Pin descriptions 851 Audio ICs 852 BA3632K Audio ICs BA3632K 853 Audio ICs 854 BA3632K Audio ICs BA3632K 855 Audio ICs 856 BA3632K Audio ICs BA3632K Electrical characteristics (unless otherwise noted, Ta = 25C, VCC = 1.2V, f= 1kHz, RL = 10kΩ (pre-amplifier), RL = 32Ω (power amplifier), L.BOOST OFF, 0dBm = 0.775Vrms) 857 Audio ICs 858 BA3632K Audio ICs BA3632K Measurement circuit 859 Audio ICs Measurement circuit switching table 860 BA3632K Audio ICs BA3632K 861 Audio ICs Application example 862 BA3632K Audio ICs BA3632K Electrical characteristics curves 863 Audio ICs External dimensions (Unit:s mm) 864 BA3632K