|HA1392 is a dual 6-8W audio power amplifier integrated circuit, which is a product produced by Hitachi, Japan. When Vcc = 25V RL = 8Î©, the output power is 8.2W per channel, THD = 15%. Suitable for combined stereo sound system and TV audio amplification, HA1394 is a 12-lead single in-line plastic package structure, the shape is shown in Figure 1.|
| Circuit characteristics: |
. Dual audio power amplification: 7-8.2W / per channel.
. Few external components (11 capacitors, 6 resistors).
. Wide working power supply voltage, 18-35V.
. Low noise and low distortion.
. There is an overheat protection circuit.
| . The output power is large. When the load is 4Î©, the 12V power supply can output 4.3W power per channel, and the 15V power supply can output 6.8W power (THD = 10%). |
. There is a thermal protection circuit inside.
Typical application circuit and electrical parameters:
HA1394 consists of two independent power amplifiers, and its typical application circuit is shown in Figures 2 and 3.
|HA1394 electrical parameters|
|parameter name||symbol||Test Conditions||Minimum value||Typical value||Maximum||unit|
|Quiescent Current||IQ||Vin = 0V (two-way)||-||80||150||mA|
|Input resistance||Rin||f = 1kHz||-||100||-||kÎ©|
|Voltage gain||Gv (dB)||f = 1kHz||-||40||-||dB|
|Voltage gain difference||Î”Gv (dB)||f = 1kHz||-||-||1.5||dB|
|Mono output power||Pout||RL = 8Î©, THD = 5%||7.0||8.2||-||W|
|Total harmonic distortion||THD||Pout = 1W, f = 1kHz||0.04||0.8||-||(%)|
|Noise output||NO||Rg = 10kÎ©, BW = 20Hz-20kHz||-||0.22||1.0||mV|
|Crosstalk||CT||f = 1kHz, Rg = 600Î©||50||62||-||dB|
|Voltage gain ratio||SVR||f = 100Hz, Rg = 600Î©||45||57||-||dB|
|Frequency response|| fL |
| Î”Gv = -3dB low |
f = 1kHz high
| - |
| 40 |
| - |
| Hz |
|HA1394 limit parameters|
|parameter name||symbol||Limit value||unit|
|Mono output current||To (peak)||4.5||A|
|Topr||Operating temperature||-20- + 70||â„ƒ|
|Storage temperature||Tstg||-55- + 125||â„ƒ|
| Note: After the power is turned on, when connecting the speaker, two 220Î© resistors can be added as the charging circuit of the output capacitor to protect the integrated circuit. |
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