| Model | Input voltage | Standby current | Maximum frequency (Hz) | Function | Typical applications | Encapsulation |
|---|---|---|---|---|---|---|
| SP31101 | 1.8－9 | 2.7 | 200－3.5 K | Speech companding chip | Cordless telephone | SOP16/DIP16 |
| SP571 | 6－18 | 3.2 | 15－20 K | Speech companding chip | Wireless microphone | SOP16W/DIP16 |
| SP572 | 1.8－9 | 1.7 | 200－3.5 K | Speech companding chip | Cordless telephone | SOP16W/DIP16 |
| SP5754.2 | 3－7 | 4.2 | 15－20 K | Speech companding chip | Wireless microphone | SOP20/SSOP20 |
| SP1235 | 10 －14 | 22 | 10.7 M | Intermediate frequency amplifier chip | FMRadio | SOP16/DIP16 |
| SP1140 | 7.5－16 | 21 | 10.7 M | Intermediate frequency amplifier chip | FMRadio | SOP16/ZIP16 |
