TDA4671

INTEGRATED CIRCUITS DATA SHEET TDA4671 Picture Signal Improvement (PSI) circuit Product specification Supersedes data of June 1993 File under Integrated Circuits, IC02 1996 Dec 11 Philips Semiconductors Product specification Picture Signal Improvement (PSI) circuit FEATURES Luminance signal delay from 20 to 1100 ns (minimum step 45 ns) Luminance signal peaking with symmetrical overshoots selectable Selectable 2.6 or 5 MHz peaking centre frequency and degree of peaking (−3, 0, +3 and +6 dB) Selectable noise reduction by coring Handles negative as well as positive colour-difference signals Selectable Colour Transient Improvement (CTI) to decrease the colour-difference signal transient times to those of the high frequency luminance signals Selectable 5 or 12 V sandcastle input voltage All controls selected via the I2C-bus Timing pulse generation for clamping and delay time control synchronized by sandcastle pulse Automatic luminance signal delay correction using a control loop Luminance and colour-difference input signal clamping with coupling capacitor 4.5 to 8.8 V supply voltage range Minimum of external components. QUICK REFERENCE DATA SYMBOL VP IP(tot) td(Y) Vi(VBS)(p-p) Vi(CD)(p-p) PARAMETER supply voltage (pins 1 and 5) total supply current Y signal delay time composite Y input signal (peak-to-peak value, pin 16) colour-difference input signal (peak-to-peak value) ±(R − Y) on pin 3 ±(R − Y) on pin 7 GY GCD Tamb gain of Y channel gain of colour-...