TDA9556 View Datasheet(PDF) - STMicroelectronics

Part Name

Description

MFG CO.

TDA9556

7.5 NS TRIPLE-CHANNEL HIGH VOLTAGE VIDEO AMPLIFIER

STMicroelectronics 

TDA9556

6.2 Output voltage

A very simplified schematic of each TDA9556 channel is shown in Figure 3.

The feedback network of each channel is integrated with a typical built-in voltage gain of G=20 (40k/2k).

The output voltage VOUT is given by the following formula:

VOUT = (G+1) x VREF - (G x VIN)

for G = 20 and VREF = 5.6V, we have

VOUT = 117.6 - 20 x VIN

Figure 3. Simplified schematic of one channel

VDD

40k

2k

IN

-

+

VREF

OUT

GNDA

GNDP

8/22

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