MM5322 NSC | Alldatasheet
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7A National Television/Radio z MM5322 color bar generator chip general description features . The MM5322 Color Bar Generator Chip is a complete ® Battery operation dot-bar and color hug-geperation system in a single © Oscilloscope trigger monolithic P-channe{“MOS ‘integrated circuit. The chip . divides an internal Ostiator (crystal controlled) fre- = Composite video output signal quency to provide the various timing, synchronization, ® Crystal controlled oscillator and video information required in the alignment of color Multiple screen patterns television receivers. A composite video output is pro- vided for complete black and white dot-bar operation. © Variable dot size It consists of all synchronization, blanking, and video information required for a fairly standard set of dot, licati bar, and cross hatch screen patterns. In addition a applications separate output for precise gating of 3.56 MHz color = Batt bench od . test a bursts is provided. For servicing ease an oscilloscope artery oF 1eh powered test [nstruments trigger is provided on either the horizontal blanking or © Manufacturing test sets vertical synchronization time slots. ® Built in test capability typical application Typical Color Bar Generator Circuit 1B Toner moraTon o—t—or once To >> wvearrenes = + bd wore) . 4 = oe L ov ‘2 Tr wont ae if “ an fun E i = nyt cuoge oj, _ EE mane co —— on 4 ae ° og ww ore wo Creek eee Oe Se he on d colon ever XX YQ eto carrera N dA ARP mation
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: = se “a ! fesouanion lal | i Pitt: Lota wR ame) mea roan nnesarsenat ne on wed \\. ‘ainaianwonen | ZTS gz Note 1: SW 1 should be “ON” only for color patterns. ae ae Note 2: Do not substitute Q2. ~ “ Note 3: Variable cap may be used to trim color erystal to exact frequency, Note 4: SW 2 and 10k resistor on pins 16 and 1 are needed only if scope trigger pulse is desired. Note 5: SW 2 selects "Hor “V" trigger output pulses. Note 6: A 27k resistor in series with a 100k trimpot may be used in place of 82k resistor for variable vertical line width Note 7: Modulation level adjusted for best patterns as viewed on TV screen. 5-97
Note 3: The color gate outputs are push-pull buffers. with their associated voltage and current levels. Note 6: The video output requiras a resistor to Vgc for operation. This resistor must be trimmed externally to achieve the desired output levels. FIGURE 1. White Dot Video Information Pulse Width FIGURE 2. Composite Video Voltage Percentages
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15 Horizontal Lines 21 Vertical Lines 18 21 Gross Hatch
0000 001 ‘oro - Dnwan a 0011 0100 Purity 101 Dots 7x11 Single Dot Gated Reinbow 10 ont 1000 SSRSURERSEED EEE SSSHGBEnnuas| Poche Coe Ha | ; Cee ree ‘Single Vertical Line ‘7x 11 Cross Hatch ‘Single Crosshair 1001 oro ‘ort po Single Horizontal Line 7 Horizontal Lines 11 Vertical Lines Ungated Rainbow 100 01 +110 11 5-100
connection diagram " = Dust-in-Line Package THIGGER 16 TaIGGER ‘our SELECT Ves u uJ zouT sco ves coz 4 2 osc 2 ecoa— 2 osc ecos— coc ove 2 ae comP OFF uJ u VIDEO our Tor view Note. Zour is an internal counter test point Order Number MME322N ‘See Pockage 19 5-101