The DSIC2 is a digital servo processor from Philips Semiconductors. It features diode signal preprocessing, focus servo loop, radial servo loop, sledge motor servo loop, and a three-line serial interface via the microcontroller. Other features include full digital signal processing, low power consumption, low voltage supply, integrated analog-to-digital converters and digital servo loop filters, and double speed capability. It offers easy application, high robustness/shock insensitivity, and various automatic procedures for radial servo, focus start-up, and radial jump or access.
The TDA1301T is a fully digital servo processor developed by Philips Semiconductors to provide all servo functions, except spindle motor control, in two-stage three-spot compact disc systems. It features full digital signal processing with integrated analog-to-digital converters and digital servo loop filters, optimized for low-power and low-voltage applications.
| Digital supply voltage | 3.0 to 5.5 V |
|---|---|
| Analog supply voltage | 3.0 to 5.5 V |
| Digital quiescent supply current | 410 uA max |
| Total power dissipation | 50 mW max |
| Operating ambient temperature | -40 to +85 °C |
| Package type | 28-pin SO package |
The maximum total power dissipation is 50 mW.
The fast restart procedure takes between 200 and 300 ms.
The device assumes the focus point is lost if FOK is false for longer than approximately 3 ms.