HA1392 is a dual 6-8W audio power amplifier integrated circuit, which is a product produced by Hitachi, Japan. When Vcc = 25V RL = 8Ω, 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: [1]. Dual audio power amplification: 7-8.2W / per channel. [2]. Few external components (11 capacitors, 6 resistors). [3]. Wide working power supply voltage, 18-35V. [4]. Low noise and low distortion. [5]. There is an overheat protection circuit. |
| [5]. The output power is large. When the load is 4Ω, the 12V power supply can output 4.3W power per channel, and the 15V power supply can output 6.8W power (THD = 10%). [6]. 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 | - | kΩ | |||
| Voltage gain | Gv (dB) | f = 1kHz | - | 40 | - | dB | |||
| Voltage gain difference | ΔGv (dB) | f = 1kHz | - | - | 1.5 | dB | |||
| Mono output power | Pout | RL = 8Ω, THD = 5% | 7.0 | 8.2 | - | W | |||
| Total harmonic distortion | THD | Pout = 1W, f = 1kHz | 0.04 | 0.8 | - | (%) | |||
| Noise output | NO | Rg = 10kΩ, BW = 20Hz-20kHz | - | 0.22 | 1.0 | mV | |||
| Crosstalk | CT | f = 1kHz, Rg = 600Ω | 50 | 62 | - | dB | |||
| Voltage gain ratio | SVR | f = 100Hz, Rg = 600Ω | 45 | 57 | - | dB | |||
| Frequency response | fL fH | ΔGv = -3dB low f = 1kHz high | - - | 40 80 | - - | Hz kHz | |||
| HA1394 limit parameters | |||||||||
| parameter name | symbol | Limit value | unit | ||||||
| voltage | Vcc | 35 | V | ||||||
| Mono output current | To (peak) | 4.5 | A | ||||||
| Power dissipation | PT | 15 | W | ||||||
| Junction temperature | Tj | 150 | ℃ | ||||||
| Topr | Operating temperature | -20- + 70 | ℃ | ||||||
| Storage temperature | Tstg | -55- + 125 | ℃ | ||||||
| Note: After the power is turned on, when connecting the speaker, two 220Ω resistors can be added as the charging circuit of the output capacitor to protect the integrated circuit |
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