TDA3504 Description
TDA3504 The TDA3504 is an integrated circuit which performs video control functions in a PAL/SECAM decoder for negative colour difference signals −(R−Y) and −(B−Y). The required input signals are luminance and colour difference and a 3-level sandcastle pulse for control purposes. Linear RGB signals can be inserted from an external source.
TDA3504 Key Features
- Capacitive coupling of the colour difference and luminance input signals with black level clamping in the input stages
- Linear saturation control acting on the colour difference signals
- (G-Y) and RGB matrix
- Linear transmission of inserted signals
- Equal black levels for inserted and matrixed signals
- 3 identical channels for the RGB signals
- Linear contrast and brightness controls, operating on both the inserted and matrixed RGB signals
- Clamping, horizontal and vertical blanking of the three input signals controlled by a 3-level sandcastle pulse
- Emitter-follower outputs for driving the RGB output stages. GENERAL DESCRIPTION
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