TBA560C FAIRCHILD | Alldatasheet
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FAIRCHILD LINEAR INTEGRATED CIRCUIT GENERAL DESCRIPTION — The TBASGOC is 2 monolithic integrated circuit used in the decoding system of color television receivers, It is constructed on a single silicon chip using the Fairchild Planar® CONNECTION DIAGRAM Process. The circuit consists of a luminance and 3 chroma amplifier. The luminance amplifier input is 16-PIN DIP matched to the delay line, OC contrast, brightness, black level clamping, blanking, and beam current (Top view) limiting functions are provided by the luminance amplifier portion of the circuit. The chroma PACKAGE OUTLINE 98 amplifier performs functions such as gain controlled amplification, chroma gain control tracked with contrast contro, seperate saturation control, PAL delay line driver, burst gating and coor bles . . rs | conmaast Fy cmowa wy * DC CONTRAST CONTROL, ‘nace ceva FF nn * OC BRIGHTNESS CONTROL cain saturarion + BLACK LEVEL CLAMPING cuwnanet out E Foe ¢ BEAM CURRENT LIMITING aniowtness DO * COLOR KILLER ‘CONT be dS * PAL DELAY LINE DRIVER eurst our aunst care * CHROMA GAIN/CONTRAST TRACKING planning oe ORDER INFORMATION ABSOLUTE MAXIMUM RATINGS (Cont'd on Page 2) TYPE PART NO. Supply Voltage (Note 1) 13 S60c TBA5GOC Total Power Dissipation (Note 1) 510 mw (soca) (TBAS6oca)t Storage Temperature 85 to +125°C Operating Ambient Temperature Oto 60°C tNot recommended for new designs. Pin Temperature (Soldering, 10 s) 260°C BLOCK DIAGRAM suack Lever Lancing. cuawing capacitor vs URST GATE INPUT eae wrur POTEET Op OB nn Oe | i 1 1 1 1 i sf nour CONTAOL outur i H ' 1 1 1 1 eaalcunaent | | amauratss © co ee wont contaast fonthot eure iG H ' 1 ' 1 ' t 4 Al Tour | as conve sore > I i ' L-~g¥_-_-- ig feb ea eter we Notes on following page. “Planar is @ patented Fairchild process. 4-195
FAIRCHILD ¢ TBA560C ABSOLUTE MAXIMUM RATINGS(Cont'd) Voltages Currents (Positive when flowing into the integrated circuit} Vi-16 Oto 45.0V Vio-16 -5.0V Hy Qt041.0ma Ig ~10t00mA V2-16 Ot HZVINote2)V42~ 4g -5.010 +60 1g -1010430mA 119 43.0mA Ve-16 to 430 Viste —80V 1g “1.010 41.0mA 145 O10 H1.0mA Ve16 -8010+50V Vig—-16 010 #50 17-30 10 42.0 ma ELECTRICAL CHARACTERISTICS: T, = 25°C, V4. 4g = 12V, as shown in Test Circuit, unless otherwise specified, CHARACTERISTICS conortions [win | typ | Max | units Required Input Signals Chrominance Input Signal (Peak-to-Peak Value) Vi-isiep) | OC*dSC 80 B| mv ‘Luminance Input Current (Black to White Volue) 3 tpt es ee mA Contrast Control Voltage Range (for 20 dB of Control) V2 16 ‘See Typical Performance Curves Brightness Control Voltage (Note 3) Ve ~16 ‘See Typical Performance Curves Saturation Control Voltage Range (for 20 dB of Control) Vi3—16 See Typical Performance Curves Burst Keying Pulse (Positive) (Peak-to-Peak Value] Towel |. 00s [10 | ‘ma Fiybock Blanking Pulses (Negative) (Peak-to-Peak Value) for 0 V Blanking Level at Lead 5 Ve-16 0) -08 v for 1.5 V Blanking Level at Lead 6 Ve-isiep) [| TV Color Killer Vig-ie fo ‘Automatic Ghrominaace Control Threshold (Note 4) Via-te | Obtainable Output Signals Luminance Output Voltage at Nominal Contrast V, V (Peak-to-Peak Value) 5-16 (pe) Burst Signal (Peak-to-Peak Value) Vr=16iep) | Nows [oe hrominance Signal at Nominal Contrast & Saturation V, v (Peak-to-Peak Value} 9 16 (poh 3.0.dB Bandwidth of Chrominance wae and Luminance Amplifier Change of Ratio, Luminance to Chrominance Signals e at 1048 Contrast Controt notes 1. Permissiole while tubes are heating UB: V1 — 16 (max) 18 V and Pros (max) 700 mW. 2) V2 ~ 5 and Vyg - 1g mutt always be lower then Vai — 16: 3. When Vg 16 Is increased above 1.7 V the black level of the output signal remains at 2.7 V 4. A negative going potential provider » 26 dB ACC range with negligible signal distortion. Maximum gain reduction is obtained at an input voltage of 800 mV typical 5. Nominal setting: maximum contrast and/or seturetion minus 6.0 8 6. Burst signal is kept constant at 1.0 V peok-to-peak by automatic gain contro! {AGC Circult TYPICAL PERFORMANCE CURVES CONTROL OF BLACK LEVEL CONTRAST CONTROL SATURATION OF AT OUTPUT OF LUMINANCE AMPLIFIER CHROMINANCE AMPLIFIER LUMINANCE AMPLIFIER wo LIA TTT) ew TTT TET (TTT LA : : > ja 7” 5 n f. 2 os 7 2 so] fh Es z
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FAIRCHILD ¢ TBAS60C TEST CIRCUIT | ue = ek wee | 7 | > tT TT H APPLICATION INFORMATION PIN NAMES 1. Balanced Chrome Signal Input 9. Chroma Signal Output 2. Contrast Control 10, Burst Gate and Clamping Pulse Input 3. Luminance Signal Input 11. Supply Voltage (12 V)
4 Black Level Clamp Capecitor 12, BC Feedback for Chroma Channel
& Luminance Signal Output 13, Chroma Sewration Control 6 Brightness Control 14. ACE Input 7. Burst Output 15. Chroma Signal Input 8. Flyback Blanking Input 16. Ground (Negative Supply) wep ee elit Lh lek fe FI Ss PPT i; i coo sea a SEPT Application diagram for operation in combination with the TBASAO. 4-198
FAIRCHILD ¢ TBA560C APPLICATION INFORMATION (Cont'd) The function is quoted against the corresponding pin number. 1, Balanced Chroma Signal Input {in conjunction with lead 15) This is derived from the chroma signal bandpass filter, designed to provide the balanced input. A differential input signal amplitude of at least 4 mV pesk-to-peak is required on leads 1 and 15. Both leads require a de potential of approximately 43.0 V. This fe devioed axa common-mode signal from a network connected to lead 7 (burst output), In this way, de feedback is provided over the burst channel to stabilize is operation, All figures for the chominance signals are based on a color bar signal with 75% saturation: ie, burst to chroma ratio of input signal is 1:2. 2. DC Contrast Control With 43.7 V on this lead, the gain in the luminance channel is such that @ 1.5 mA peak-to-peak input signal to lead 3 gives @ luminance output signal amplitude on lead 5 of 3V black to white. A variation of voltage on lead 2 between #6 V and +2 V gives a corresponding gain variation of +6 to > 14 dB. A similar variation in gain in the chroma channel occurs in order to provide the correct tracking between the two signals 3. Luminance Signal Input This terminal has @ very low input Impedance and acts as a current sink. The luminence signal from the delay line is fed via a series terminating resistor and must have about 1,5 mA black to white amplitude, 4. Charge Storage Capacitor for Black Level Clamp. Brightness control can also be achieved on this lead by inserting a negative going line flyback pulse, clipped by a diode to be rectangular, across a resistor of approximately 47 £2 in series with the storage capacitor (5.0 uF). Variation of the amplitude of this pulse shitte the black level of the clamped luminance signal and thus controls the picture brightness, 8. Luminance Signal Output An emitter follower provides a low impedance output signal of 3 V black to white amplitude at nominal contrast setting heving a black level in the range 0 to +3 V. An external emitter load resistor is required, greater than 1 k@2, Black level shift at contrast control is typically in the range of +10 mV if the luminance input current during black level is about 0.75 mA. When this current has a different value a larger black level shift has to be taken into account. If the input current during black level differs 1 mA from the nominal value of 0.75 mA, the black level shift will be sbout 100 mV over the complete contrast control range. For smaller differences of the input current, the black level shift will be correspondingly smaller. Black level shift with video signal content occurs only when the input signal is ac coupled. The value depends on the drive current amplitude end can be calculated from the figures given above (for maximum contrast: for a lower contrast setting the variation is correspondingly smal), Black level shift over an ambient temperature variation of 30°C is typically —140 mV. 6. The DC Leval of the Luminance Output Signal May be Controlled by the OC Potential Applied to this Lead. Over the range of potential +0.9 to +1.7 V, the black level of the luminance output signal {lead 8) is increased from 0 to 42.7 V, The | cutoutsigna! lack feel vmains at 12.7 V when the potential on ad'6 kite aoe a 7. Burst Output A 1V peak-to-peak burst (kept constant by the ACC system) is produced here, Also, to achieve good de stability by negative feedback in the burst channel, the de potential at this lead is fed back to leads 1 and 15 via the chroma input transformer, Whow limiting occurs, the burst amplitude is typically 3.0 V. 8. Flyback Blanking Input Waveform Negative going horizontal and vertical blanking pulses may be applied here. If rectangular blanking pulses of less than —1 V negative excursion are applied, the signal level at the luminance output (lead §) during blanking will be 0 V. However, if the blanking pulses applied to lead 8 have an amplitude of —2 to —3 V, the signal level at the luminance output during blanking will be +1.5 V.. 9. Chroma Signal Output With @ 1 V peak-to-peak burst output signal (lead 7) and at nominal contrast and saturation setting (leads 2 ond 13), the chroma signal ‘output amplitude is 1 V peak-to-peak. An external dc network is required which Provides negative feedback in the chroma channel via lead 12, 10. Burst Gating and Clamping Pulse Input A positive pulse of minimum 50 A is required on this lead to provide gating in the burst channel and luminance channel black jevel clamp Circuit, The timing and width of this current pulse should be such that no appreciable encroachment occurs into the syne pulse or pietore line periods during normal operation of the receiver. 11, +12 V Power Supply Correct operation occurs within the range 10 to 13 V. All signal and control levels hat a linear dependency on supply voltage but, in any siven receiver design, this range may be restricted due to considerations of tracking between the power supply variations and ‘pietore ‘contrast and chroma levels, The power dissipation must not exceed 510 mW at 60°C ambient temperature. 12, DC Feedback for Chroma Channel (See lead 9) 13. Chroma Saturation Control A control range of +6 to > —14 dB is provided over a range of de potential on lead 13 from +2,7 to +6.2 V. Color killing is also done at this terminal by reducing the de potential to less than +1 V, e.g. from the TBASAO color killer output terminal. The kill factor is min 40 dB. 14. ACC Input A negative going potential gives a 26 dB range of ACC starting at 1.2 V and giving maximum gain reduction at an input voltage of typically 500 mV. 15. Chroma Signal Input (See lead 1) 16. Negative Supply (Ground) 4-199