This document is about the preliminary specification of TDA1302T data amplifier and laser supply circuit for CD player and read only optical systems. The device contains 6 amplifiers which amplify and filter the focus and radial diode signals and provides an equalized RF signal suitable for single or double speed mode; the mode can be switched by means of the speed control pin. The device can accommodate astigmatic, single foucault and double foucault detectors and can be applied to all N-sub laser/monitor diode units even though the circuit has been optimized for the Philips CDM1.
The TDA1302T is a data amplifier and laser supply circuit designed for three-beam pick-up detectors in Compact Disc and read-only optical systems. It contains six amplifiers that amplify and filter focus and radial diode signals, providing an equalized RF signal suitable for single or double-speed modes. The device also includes a fully automatic laser control circuit with stabilization, an ON/OFF switch, and a separate supply for power reduction.
| Supply voltage (Vop) | 3.4 - 5.5 V |
|---|---|
| Laser supply voltage (VopL) | 2.5 - 5.5 V |
| Operating ambient temperature | -40 +85 °C |
| Storage temperature | -65 +150 °C |
| Total power dissipation | 300 mW |
| Laser output current | -100 mA |
| Equalization delay (single speed) | 320 ns |
| Flatness delay (double speed) | 10.5 ns |
It is a data amplifier and laser supply circuit for three-beam pick-up detectors applied in CD player and read only optical systems.
Yes, it has two built-in equalizers for single or double-speed mode, and the mode can be switched by means of the speed control pin.
The device is available in a plastic small outline package with 24 leads and a body width of 7.5 mm.