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| NTE855 Integrated Circuit Color TV Video Monitor Description: The NTE855 is an integrated circuit in a 14-Lead DIP type package used to generate an RF TV signal from baseband color-difference and luminance signals. This device contains a chroma subcarrier oscillator, a lead and lag network, a quasi-quadrature suppressed carrier DSB chroma modulator, an RF oscillator and modulator, and an LSTTL compatible clock driver with adjustable duty cycle. The NTE855 may be used as a general-purpose modulator with a variety of video signal generating devices such as video games, test equipment, video tape recorders, etc. Features: D Single 5V Supply Operation for NMOS and TTL Compatibility D Minimal External Components D Sound Carrier Addition Capability D Modulates Channel 3 or 4 Carrier with Encoded Video Signal D Low Power Dissipation D Linear Chroma Modulators for High Versatility D Composite Video Signal Generation Capability D GND-Referenced Video Prevents Overmodulation Absolute Maximum Ratings: (TA = +25C unless otherwise specified) Supply Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8V Power Dissipation, PD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.25W Derate Above 25C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13mW/C Operating Junction Temperature, TJ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +150C Operating Ambient Temperature Range, Topr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0 to +70C Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -65 to +150C Recommended Operating Conditions: Supply Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5V Luma Input Voltage, Sync Tip . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1V Luma Input Voltage, Peak White . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 350mV Color Reference Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.5V Color A, B Input Voltage range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1V to 2V Electrical Characteristics: (VCC = 5V, TA = +25C unless otherwise specified) Parameter Operating Supply Voltage Supply Current Output Voltage, LOW Output Voltage, HIGH Rise Time Fall Time Duty Cycle Adjustment Range Inherent Duty Cycle Input Common-Mode Voltage Range Oscillator Feedthrough Modulation Angle Conversion Gain Input Current Input Resistance Input Capacitance Chroma Modulator Linearity RF Modulator Luma Input Dynamic Range RF Output Voltage Luma Conversion Gain Chroma Conversion Gain Chroma Linearity Luma Linearity Input Current Input Resistance Input Capacitance Residual 920kHz Output Current Chroma Oscillator Deviation RF Oscillator Deviation Clock Drive Duty Stability Pin9 f = 67.25MHz, V9 = 1V V9 = 0.1V to 1.oV V10 = 1.5Vp-p, V9 = 1V Pin12, V10 = 1.5Vp-p Pin12, V9 = 0 to 1.5Vp-p Pin9 Pin9 Pin10 Pin9, Pin10 Measured at Pin12, Note 1 Pin12, V9 = 0 fo = 3.579545MHz fo = 67.25MHz 0 - - - - - - - 100 - - - - - 5 - 15 0.8 0.95 1 2 - 800 - - 50 1 50 250 - 1.5 - - - - - -20 - - 5 - - - - - V mVrms V/V V/V % % A k pF dB mA Hz kHz % V1 = 0.4V to 2.4V V1 = 2.4V to 0.4V V3 = 5V, Measured at V1 = 1.4V No connection to Pin3 Pin5, Pin6, Pin7 Measured at Pin8 (V7 =2V) - (V5 = 2V) V8/(V7 - V6); V8/(V5 - V6) Pin5, Pin6, Pin7 Pin5, Pin6, Pin7 Pin5, Pin6, Pin7 V5 = 1V to 2V, V7 = 1V to 2V Test Conditions Min 4.75 - - 2.4 - - 70 - 0.8 - 85 - - 100 - - Typ 5.00 25 - - - - - 50 - 15 100 0.6 - - - 40 Max 5.25 - 0.4 - 50 50 30 - 2.3 31 115 - -20 - 5 - Unit V mA V V ns ns % % V mV(p-p) deg V(p-p)/V A k pF % Chroma Oscillator/Clock Driver (Measured at Pin1 unless otherwise specified) Chroma Modulator (V5 = V6 = V7 = 1.5V unless otherwise specified) Temperature Characteristics (VCC = 5V, TA = 0 to +70C, IC only) Note 1. V9 = 1V, VC = 300mVp-p @ 3.58MHz, VS = 250mVp-p @ 4.5MHz, Source Impedance = 75. Pin Connection Diagram Clock Output OSC Input Duty Cycle (Adjust) GND Color B Input Color Ref Input Color A Input 1 2 3 4 5 6 7 14 RF Tank 13 RF Tank 12 RF Modulator Output 11 VCC 10 Chrominance Input 9 8 Luminance Input Chrom Modulator Output 14 8 1 7 .785 (19.95) Max .200 (5.08) Max .300 (7.62) .100 (2.45) .600 (15.24) .099 (2.5) Min |
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