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TDA4671

Part Number	TDA4671
Manufacturer	NXP
Description	Picture Signal Improvement PSI
Published	Apr 23, 2005
Detailed Description	INTEGRATED CIRCUITS DATA SHEET TDA4671 Picture Signal Improvement (PSI) circuit Product speciﬁcation Supersedes data o...
Datasheet	TDA4671 PDF File

Overview

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-difference channel operating ambient temperature − − − − 0 1.
05 1.
33 −1 0 − 1.
48 1.
88 − − 70 4.
5 31 20 − MIN.
5 41 − 450 TYP.
8.
8 52 1130 640 MAX.
GENERAL DESCRIPTION TDA4671 The TDA4671 delays the luminance signal and improves colour-difference signal transients.
The luminance signal can also be improved by peaking and noise reduction (coring).
UNIT V mA ns mV V V dB dB °C ORDERING INFORMATION TYPE NUMBER TDA4671 1996 Dec 11 PACKAGE NAME DIP18 DESCRIPTION plastic dual in-line package; 18 l...

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