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Audio signal-processing circuits
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Audio signal-processing circuits
| Model | Description | Key parameters | Package |
|---|---|---|---|
| SD2038 | SD2038 is a highly integrated six-channel electronic volume-control circuit with few external components. It controls volume before six power-amplifier channels, and one potentiometer adjusts all six channels simultaneously. | ~ | DIP18 and SOP18 |
| SD3703 | Silence-detection circuit for audio systems. It detects silence during playback or fast-forward/rewind and outputs a control signal. | 2.5V~16V | SOP8 |
| SD2258 | Six-channel electronic volume-control IC using an I²C interface. Volume attenuation ranges from 0 to −79dB in 1dB steps, with low noise and high channel separation. | 5V~9V | SOP20/DIP20 |
| SD8199 | SD8199 is a stereo amplifier and DC volume-control circuit. It is widely used for remote control of audio amplifiers, video-game consoles, and CATV audio. | ~ | DIP8 and SOP8 |
| SD8189 | SD8189 is a dual-channel preamplifier IC for dual-cassette recorders. | ~ | SDIP24、SOP24 |
| SD668 | SD668 integrates dual-channel head amplification, DC-level control, electronic volume control, headphone power amplification, and motor-speed control. It is suitable for portable recorders and headphone cassette recorders. | 2.1V ～ 5V | SOP28 |
| SD7312 | SD7312 is a bipolar integrated circuit that can be used as a preamplifier in compact recorders. | 5.0V ～ 12V | DIP14 |
| SD2538 | SD2538A is a single-channel preamplifier with ALC. It is suitable for stereo recorders and cassette recorders. | 4.5V ～ 14V | SOP8 |
| SD3308 | SD3308 is a dual-channel preamplifier with ALC. It is suitable for stereo recorders and cassette recorders. | 4.5V ～ 14V | SOP14 |
| SD2068 | SD2068 is a preamplifier circuit for single-cassette recorders. It includes a cassette 0K hybrid amplifier circuit and an integrated source-selection switch. Package: SOP24. | 4V ～ 9V | SOP24 |
| SD1237 | Stereo audio power-amplifier protection circuit | 25V ～ 60V | SIP8 |