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NTE1835 Dataheets PDF



Part Number NTE1835
Manufacturers NTE
Logo NTE
Description Integrated Circuit Interface
Datasheet NTE1835 DatasheetNTE1835 Datasheet (PDF)

NTE1835 Integrated Circuit Interface for Character and Pattern Description: The NTE1835 is an integrated circuit designed for interface of decoder outputs or of external analog input signal in teletext system with the color output. Features: D Provides Analog Signal Processing for Character Signal Input D High Speed Switching: Rise and Fall Time: 35ns Delay time: 20ns D Including DC Controller of Brightness, Contrast, R–Adjustment and B–Adjustment for Character Signal Input D Y Amplifier Linear .

  NTE1835   NTE1835


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NTE1835 Integrated Circuit Interface for Character and Pattern Description: The NTE1835 is an integrated circuit designed for interface of decoder outputs or of external analog input signal in teletext system with the color output. Features: D Provides Analog Signal Processing for Character Signal Input D High Speed Switching: Rise and Fall Time: 35ns Delay time: 20ns D Including DC Controller of Brightness, Contrast, R–Adjustment and B–Adjustment for Character Signal Input D Y Amplifier Linear Area’s Bottom: 2.0V Absolute Maximum Ratings: (TA = +25°C unless otherwise specified) Supply Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14.4V Circuit Voltage V1–13 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0/14.4V V3,6,7,8,9–13 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0/V1–13–1V V11–13 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2/(V1–13)–1 V15,18,21–13 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0/(V1–13)V Circuit Current I10, 14, 17, 20 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –30/10mA I16,19,22 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –1/3mA Power Dissipation (TA = +70°C), PD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1040mW Ambient Temperature Range, Topr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –20° to +70°C Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –55° to +150°C Electrical Characteristics: (TA = +25°C, VCC = 12V unless otherwise specified) Parameter Total Circuit Current Circuit Voltage Symbol Itot V10,14, 17,20–13 V16,19, 22–13 Test Conditions VCC = 12V VCC = 12V Min 32 7.7 3.0 Typ 47 8.0 3.5 Max 62 8.3 4.0 Unit mA V V Electrical Characteristics (Cont’d): (TA = +25°C, VCC = 12V unless otherwise specified) Parameter TV Signal Voltage Amp. Relative Voltage Amp AV1 TV Signal Frequency Characteristics Symbol AV1 ∆AV1 fV Test Conditions f = 500kHz, Sine Wave signal 1Vp–p f = 500kHz, Sine Wave signal 1Vp–p Sine wave signal 1Vp–p, Frequency in which AV1 becomes –3dB Character Input 1Vp–p, Contrast max. Character Input 1Vp–p, Relative output voltage Contrast max./min. V3 = V9 = 6V V3 = V9 = 6V V3 = V9 = 6V V3 = V9 = 6V Min 0.95 0.95 20 Typ 0.98 1.00 – Max 1.00 1.05 – Unit times times MHz Character Signal Voltage Amp AV2 Relative Voltage Amp. Character Signal Contrast Ratio Character Signal Rise/Fall Time Character Signal Rise Delay Time Character Signal Fall Delay Time Character Signal tdr, tdf 3–channel Mutual Difference TX–TV Changeover Rise Delay Time TX–TV Changeover Fall Delay Time TX–TV Changeover tdr, tdf Mutal Difference TX–TV Discrimination Level Crosstalk between TV Signal Channels Crosstalk between Character Signal Channels TV–to–Character Changeover Crosstalk Pedestal Deflection of Character Signal Contrast Change TV Signal Input DC Level Standard TX–TV Signal Input Level Standard AV2 ∆AV2 ∆eo tr(TX), tf(TX) td–r(TX) td–f(TX) ∆td(TX) 3.0 0.85 3.0 – – – – – – – 0.50 40 40 40 3.4 1.00 3.5 35 25 30 – 60 50 – 0.65 45 45 45 0 – – 3.8 1.15 4.0 60 60 60 20 80 70 20 0.70 – – – ±150 10.5 6.0 times times times ns ns ns ns ns ns ns V dB dB dB mV V V td–r(TX/TV) V3 = V9 = 6V td–f(TX/TV) V3 = V9 = 6V ∆td(TX/TV) Vt(TX/TV) CTTV CTTX CTTX/TV ∆ETP–C TV1 TX/TV1 Brightness typ., Contrast Min to Max TV input signal level (R–Y) TV, (G–Y) TV, (B–Y) TV, YTV V3 = V9 = 6V – 2.0 0 Pin Connection Diagram VCC 1 Pedestal Clamp Filter 2 Contrast Control 3 Blanking Pulse Input 4 Shadow Input 5 Clamp Pulse Input 6 RTX Adjust 7 RTX Adjust 8 Brightness Control 9 Y Output 10 YTV Input 11 22 RTX Input 21 (R – Y)TV Input 20 R Output 19 GTX Input 18 (G – Y)TV Input 17 G Output 16 BTX Input 15 (B – Y)TV Input 14 B Output 13 GND 12 TX/TV Change Input 22 12 .410 (11.41) 1 11 1.300 (33.0) .400 (10.16) .216 (5.5) .100 (2.54) 1.000 (25.4) .110 (2.79) .


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