PHILIPS HSH8927 is a new company to two-channel audio circuits, with the importation of their internal mute function, on / off no impact on current sound, and has set a short-circuit protection, suitable for home theater Hi-Fi amplifier matching.
The IC is 9 feet separate package, the main electrical parameters:
the typical voltage ± 16V, the limit for ± 20V,
output power in VCC = ± 18V, in 4 Ω load on each channel to 30 W, BTL up to law 80W; total distortion of 0.15 percent;
stereo separation to 65 dB;
quiescent current of 70 mA;
closed-loop voltage gain of 31 dB.
Pin function:
① R-channel input of the same;
② R RP-input;
③ internal mid-point potential;
④ R-channel output;
⑤ power anode;
⑥ L-channel output;
⑦ power cathode;
⑧ L RP-input;
⑨ L-phase Inputs.
Figure 1 is HSH8927 simple two-channel amplifier circuit, a dual power supply, if the audio signal to VCD, must drive additional pre-amplifier. If you need more power output, the choice of the BTL Figure 2 circuit, the output power of up to 80 W. IC1 is an integrated 5-point equalizer, the potential for regulation in 70 Hz, 330Hz, 1kHz, 3.3kHz, 10kHz audio of the band increase or decrease.
Note:
1. Prior to the IC power must be fitted with heat sink,
2. Metal heat sink Do not touch the power cord of cathode or negative, that is otherwise inconsistent with the destruction of the device,
3. Have sufficient power output, power transformer power is greater than the power amplifier output power and adopt the bridge rectifier filter.
