TDA8145

Video Processing Overview

The TDA8145 is a monolithic integrated circuit designed for TV and monitor applications to perform east-west pin-cushion correction on square cathode-ray tubes. It operates with a supply voltage range of 17 V to 30 V and draws a typical supply current of 7 mA. The internal reference voltage is typically 8.0 V, while the output voltage at pin 7 ranges from 15.3 V to 16.7 V under zero frame sawtooth current conditions. The device features a class D push-pull final stage capable of driving an external diode modulator via an inductor.

Video Processing Feature Summary

• Square generator specifically designed for parabolic current generation required for square CRT correction
• Final stage utilizes Class D architecture with energy redelivery capabilities
• Includes parasitic parabola suppression functionality during the vertical flyback period
• Supports dynamic field correction inputs and static picture width adjustment

Video Processing Applications

• East-west pin-cushion correction circuits for television sets
• Pin-cushion correction systems for computer monitors
• Driving diode modulators in CRT display applications

Video Processing Procurement Notes

Verify the specific package type against the order code table to ensure compatibility with the intended PCB footprint. Confirm that the operating temperature range aligns with the system's thermal environment requirements. Cross-reference the datasheet revision history to ensure the latest electrical characteristics are applied during the design phase.

Video Processing Selection Notes

Select this component when designing correction circuits for square tube displays requiring low dissipation and high efficiency. Ensure the external components support the specified current limits and voltage drops. Verify that the application circuit accommodates the necessary input signals for keystone and picture width adjustments.

Video Processing Part Context

This part belongs to STMicroelectronics' lineup of specialized analog integrated circuits for consumer electronics. It serves as a dedicated solution for geometric distortion correction in legacy display technologies. The device integrates multiple functional blocks into a single POWERDIP8 package to simplify the design process for manufacturers.

Video Processing Replacement Considerations

The TDA8146 is documented as a similar part offering east-west correction for rectangular TV tubes. Designers should verify pinout compatibility and electrical specifications before substituting parts within the same product family.