KA2211

The KA2211 is a kind of dual audio power amplifier for consumer applications. It is designed for high power, low dissipation and low noise. It also includes various protectors. It is suitable for ca-audio power amplifier with high performance.

There are some features of KA2211 as follows: (1)operating supply voltage range: VCC=10 to 18 V; (2)high power (dual): PO=5.8 W typ at VCC=13.2 V, RL=4, THD=10%; (3)low distortion (dual): THD=0.065 typ at VCC=13.2 V, RL=4, PO=1 W, AV=52 dB; (4)low noise dual: VNO=0.7 mV typ at VCC=13.2 V, RL=4, Rg=10 k, AV=52 dB, BW(-3 Db)=20 Hz to 20 kHz; (5)protector, thermal shutdown: overvoltage protection and DC short protection.

What comes next is about the absolute maximum ratings of KA2211 (Ta=25): (1) supply voltage, VCC(surge): 45 V when t=0.2 sec; (2)maximum supply voltage, VCC(max 1): 25 V at VI=0; (3)maximum supply voltage, VCC(max 2): 18 V when with signal; (4)maximum output current, IO(peak): 3.5 A; (5)power dissipation, PD: 15 W; (6)operating temperature, Topr: -20 to +75; (7)storage temperature, Tstg: -40 to +150.

What comes next is about the electrical characteristics of KA2211 (Ta=25, VCC=13.2 V, RL=4, Rg=600, f=1 kHz, unless otherwise specified): (1)quiescent circuit current, ICC: 80 mA typ and 145 mA max at VI=0; (2)output power, PD: 5 W min and 5.8 W typ at THD=10%; (3)total harmonic distortion, THD: 0.06% typ and 0.3% max at PD=1 W; (4)voltage gain, AV: 50 dB min, 52 dB typ and 54 dB max at VO=0 dBm; (5)channel balance, CB: -1 dB min, 0 dB typ and 1 dB max at VO=0 dBm; (6)output noise voltage, VNO: 0.7 mV typ and 1.5 mV max at Rg=10 k, BW(-3 Db)=20 Hz to 20 kHz; (7)cross talk, CT: 57 dB typ at VO=0 dBm; (8)input resistance, RI: 33 k at f=1 kHz.