TBA820L, TBA820M, TBA820MS low-frequency B power amplifier integrated circuit

Published:2011/5/3 2:09:00 Author:TaoXi | Keyword: low-frequency, B, power amplifier | From:SeekIC

The TBA820L, TBA820M, TBA820MS always use as the low-frequency B power amplifier. It can be used in the cassette tape recorders, compact stereo cassette players, computer sound systems.etc. 1. TBA820L, TBA820M, TBA820MS Pin functions and In-circuit Electrical parameters and the internal equivalent circuits of the TBA820L, TBA820M, TBA820MS are the same, the internal circuit is as shown in figure 1. They are in the 0 pin double row package, the pin functions and data is shown as the table 1. Table 1. The pin functions and data of the TBA820L/M/MS 2.TBA820L/M/MS main electrical parameters (1)Limit conditions: power voltage Vcc=16V, Allowed power PD=1W; Output peak current Io=1.5A (2)Main electrical parameters: In RL = 8Ω, f = lkHz condition, the main electrical parameters are as shown: * Static current I (OQ) Maximum value: l2mA, Typical value: 4mA.* Power supply voltage Vcc Maximum value: l6V, Minimum value: 3V, Typical value: 6V, 9V, 12V.* open-loop voltage gain G (VO) G(VO)=75dB; when the closed-loop voltage gain is Ri=33Ω, G(VO)=34dB.* Output power Po cc=9V，THD=l0%: maximum Po=1.2W, minimum Po=0.9W.* Harmonic Distortion THD Po=5OOmW，Ri=33Ω: THD=0.8%(Typical)* Input Resistance Ri pin-3's input resistance is 5MΩ. 3.TBA82OL/M/MS Typical Application Circuit The two kinds of typical application circuit are as shown in figure 2 and figure 3. The former's load is connected to the power. The latter's load is connected to the ground. Figure2 The typical application circuit of the TBA82OL/M/MS manifold



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