TDA1521

The TDA1521 audio power amplifier falls under the category of Integrated Circuits in the file system.

The TDA1521/TDA1521Q is a dual hi-fi audio power amplifier encapsulated in a 9-lead plastic power package. The device is designed for mains fed applications such as stereo TV sound and stereo radio. It requires very few external components, has input muted during power-on and off to prevent switch-on or switch-off clicks, low offset voltage between output and ground, excellent gain balance between channels, and is hi-fi according to IEC 268 and DIN 45500 standards. It is short-circuit-proof and thermally protected. The supply voltage range is ±7.5 to ±21.0 V, with an output power of 12 W at THD = 0.5% and a voltage gain of 30 dB. The package outlines include TDA1521 with 9 leads in-line in a plastic power package (SOT131) and TDA1521Q with 9 leads SIL-bent-to-DIL in a plastic power package (SOT157). The characteristics of the amplifier include a supply voltage range in operating mode of ±7.5 to ±21.0 V, repetitive peak output current of 2.2 A, total quiescent current without load of 18-70 mA, output power at various THD levels, total harmonic distortion, power bandwidth, voltage gain, gain balance, noise output voltage, input impedance, ripple rejection, channel separation, and input bias current.

The power output of the TDA1521 audio power amplifier is 2 x 12 watts into an 8 Ω load with a symmetrical power supply of ± 16 V.