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NTE1437 Integrated Circuit VIR Signal Processor
Description: The NTE1437 is an integrated circuit designed for color TV VIR (Vertical Interval Reference) signal processing circuits (with auto tint compensation circuit).
Features: D Incorporating VIR signal discriminator color control, tint control and Y signal amplifier on a single chip, easier for compact set design. D Reduction in external components D No adjustment required
Absolute Maximum Ratings: (TA = +25C unless otherwise specified) Supply Voltage, V8-21 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14.4V Supply Voltage, V17-21 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.1V Circuit Voltage, V5-21 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0 to 14.4V Circuit Voltage, V6-21, V7-21 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -3 to +6V Circuit Voltage, V10-21, V12-21, V18-21 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0 to V8-21V Circuit Voltage, V24-21 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0V Circuit Current, I5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0 to 20mA Circuit Current, I9 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -1 to +3mA Circuit Current, I20 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -3 to +1mA Circuit Current, I23 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -3 to 0mA Power Dissipation, PD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 630mW Operating Ambient Temperature Range, Topr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -20 to +70C Storage Temperatuere Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -20 to +150C Note *. + and - are flow-in and flow-out currents to/from the circuit, respectively.
Electrical Characteristics: (TA = +25C unless otherwise specified)
Parameter Circuit Current Output Voltage "H" Level (Tint Manual) "L" Level Output Voltage "H" Level (Color Manual) "L" Level Output Voltage "H" Level (Tint Auto) "L" Level Output Voltage "H" Level (Color Auto) "L" Level Voltage Amplification (Y Amp.) VIR Directional Level Pulse Width (19H) Sensitivity Tint Manual Control Color Manual Control Tint Auto Control Color Auto Control Tint Pre-Emphasis Control Symbol I8 I17 V9-21(H) V9-21(L) V20-21(H) V20-21(L) V11-21(H) V11-21(L) V19-21(H) V19-21(L) AV V(VIR) tw S(1) S(2) S(3) S(4) S(5) Pin 4 output (SW 1:1) for Pin 1 video signal input (1Vp-p) Pin 2 VIR signal level (SW 1:1) at the start of LED ON 19H pulse width of Pins 14 & 16 (SW 1:2) Differential voltage ratio between Pins 9 & 12 Differential voltage ratio between Pins 20 & 18 (SW 1:2) Differential voltage ratio between Pins 9 & 13 (SW 1:1) Differential voltage ratio between Pins 20 & 15 (SW 1:2) Differential voltage ratio between Pins 9 & 10 (SW 1:1) Test Conditions V8-21 = 12V V17-21 = 5 1V 5.1V Min 20 5 10.3 0.6 9.5 0 9.5 0.4 10.1 0.4 1.75 0.23 7 0.83 0.86 40 41.5 -1.5 Typ 25.5 12 11 1.3 10.2 - 10.2 1.7 10.9 1.8 1.95 0.28 12 0.94 0.97 43 44.5 -1.3 Max 31 19 11.7 2.0 10.9 0.3 10.9 2.7 11.7 3.1 2.15 0.33 17 1.05 1.08 46 47.5 -1.1 Unit mA mA V V V V V V V V times V s times times dB dB times
Pin Connection Diagram (Front View)
Y Signal Input Variable Y Signal Input Fixed Ripple Filter To Color Prefer Control VIR Signal Presence Indicator Horiz Blank Pulse In Vert Blank Pulse In VCC Tint Control Output
1 2 3 4 5 6 7 8 9
24 Sync Input 23 RC Coupling Network 22 RC Coupling Network 21 GND 20 Color Control Output 19 Ripple Filter 18 Manual Color Control 17 VCC 16 Ripple Filter 15 B - Y Signal Input 14 Ripple Filter 13 R - Y Signal Input
To Tint Prefer 10 Control Ripple Filter 11 Manual Tint Control 12
24
13
1
12
1.300 (33.02) Max
.520 (13.2)
.225 (5.73) Max
.100 (2.54) 1.100 (27.94) .126 (3.22) Min .600 (15.24)

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