TSH103ID

Overview

The TSH103ID is a low-cost triple video buffer and filter designed for standard definition video applications. It operates on a single 5 V supply (4.5 to 5.5 V) within an SO-8 plastic package. Each channel features an internal 6 MHz fourth-order reconstruction filter and provides a 6 dB gain buffer optimized for driving 75 Ω video lines. The device ensures the bottom of the video signal remains close to 0 V, with a typical output DC shift of 310 mV at RL = 150 Ω. Key electrical characteristics include a -1 dB bandwidth of 5.1 to 7.4 MHz, a group delay of 10 ns, and a supply current of 5.5 to 7.1 mA per channel.

Feature Summary

• Triple-channel architecture dedicated to driving video signals from DAC outputs on 75 Ω lines
• Integrated 6 MHz fourth-order reconstruction filter for attenuation of sampling frequencies
• Provides 6 dB voltage gain buffer suitable for standard definition video formats
• Operates on a single 5 V power supply with rail-to-rail-like output capability near ground

Applications

• Standard definition televisions
• Set-top boxes
• DVD players and recorders

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm the correct packaging configuration. The 'ID' suffix indicates tube packing, while 'IDT' denotes tape and reel. Ensure the selected variant matches the required assembly method for the target production line. Confirm that the operating temperature range aligns with the environmental specifications of the final application.

Selection Notes

Select this component when replacing discrete transistor, coil, and capacitor solutions for buffering and filtering in standard definition video paths. It is suitable for driving CVBS/Y-C, RGB, YPbPr, or YUV formats. Consider the 6 dB gain requirement and the need for a single 5 V supply. Verify that the input DC coupling and output DC shift characteristics meet the interface requirements of the connected video DAC and display equipment.

Part Context

The TSH103 belongs to STMicroelectronics' portfolio of video buffer amplifiers. It is part of the TSH series, which includes similar devices like the TSH122 and TSH344. These components are engineered to provide integrated filtering and buffering functions, reducing the bill of materials and board space compared to discrete implementations. The TSH103 specifically targets cost-sensitive standard definition video applications.

Replacement Considerations

The datasheet lists the TSH103IDT as a compatible alternative with identical electrical characteristics but different packaging (tape and reel instead of tube). No other cross-model replacements are explicitly confirmed in the provided documentation.