The Electronic Component —— TEA2037A

Features Summary of TEA2037A

1.Direct line darlington drive

2.Direct frame-yoke drive (± 1a)

3.Composite video signal input capability

4.Frame output protection against short circuits

5.Pll

6.Horizontal oscillator frequency

7.Range from 15khz to 100khz

8.Vertical oscillator frequency

9.Range from 30hz to 120hz

10.Very few external components

11.Very low cost power package

The TEA2037A is an horizontal and vertical deflection circuit. It uses the same concept as TEA2117 but optimized for small screens, for a very low cost solution.

The TEA2037A performs all the video and power functions required to provide signals for the direct drive of the line darlington and frame yoke. It contains:

1.       Shunt regulator

2.       Synchronization separator

3.      An integrated frame separator without external components

4.      A saw-tooth generator for the frame

5.      A power amplifier for direct drive of frame yoke (short circuit protected)

6.      An open collector output for the line darlington drive

7．A line phase detector and a voltage control oscillator.

The slice level of sync-separation is fixed by value of the external resistors R₁ and R₂ . V_R is an internally fixed voltage. The sync-pulse allows the discharge of the capacitor by a 2 x 1 current. A line sync-pulse is not able to discharge the capacitor under VZ/2. A frame sync pulse permits the complete discharge of the capacitor, so during the frame sync-pulse Q3 andQ4 provide current for the other parts of the circuit.

More details about the electronic components please visit http://www.hqew.net.