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TDA6800T Dataheets PDF



Part Number TDA6800T
Manufacturers NXP
Logo NXP
Description Video modulator circuit
Datasheet TDA6800T DatasheetTDA6800T Datasheet (PDF)

INTEGRATED CIRCUITS DATA SHEET TDA6800 TDA6800T Video modulator circuit Product specification File under Integrated Circuits, IC02 March 1986 Philips Semiconductors Product specification Video modulator circuit GENERAL DESCRIPTION TDA6800 TDA6800T The TDA6800 is a modulator circuit for modulation of video signals on a VHF/UHF carrier. The circuit requires a 5 V power supply and few external components for the negative modulation mode. For positive modulation an external clamp circuit is req.

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INTEGRATED CIRCUITS DATA SHEET TDA6800 TDA6800T Video modulator circuit Product specification File under Integrated Circuits, IC02 March 1986 Philips Semiconductors Product specification Video modulator circuit GENERAL DESCRIPTION TDA6800 TDA6800T The TDA6800 is a modulator circuit for modulation of video signals on a VHF/UHF carrier. The circuit requires a 5 V power supply and few external components for the negative modulation mode. For positive modulation an external clamp circuit is required. This circuit can be used as a general purpose modulator without additional external components. Features • Balanced modulator • Symmetrical oscillator • Video clamp circuit for negative modulation • Frequency range 50 to 800 MHz QUICK REFERENCE DATA MIN. Supply voltage range Supply current consumption Video input voltage Input impedance Output voltage (50 MHz) Output voltage (600 MHz) Differential gain Differential phase Intermodulation distortion PACKAGE OUTLINE TDA6800 : 8-lead dual in-line; plastic (SOT97A); SOT 97-1; 1996 november 29. TDA6800T: 8-lead mini-pack; plastic (SO8; SOT96A); SOT 96-1; 1996 november 29. V5−4 I5 V8(p−p) R8 V6-7 V6-7 ∆G ∆φ dint 4,5 − − 30 − − − − − TYP. − 9 1 − 13 10 − − −80 MAX. 5,5 − − − − − 10 10 − V mA V kΩ mV mV % deg. dB March 1986 2 Philips Semiconductors Product specification Video modulator circuit RATINGS Limiting values in accordance with the Absolute Maximum System (IEC 134) Supply voltage Input voltage Output voltage Storage temperature Junction temperature Operating ambient temperature range THERMAL RESISTANCE From junction to ambient in free air TDA6800T TDA6800 Rth j−a Rth j−a V5−4 V8−4 V6, 7−4 Tstg Tj Tamb max. max. max. max. max. TDA6800 TDA6800T 7 V 4 V 9 V 125 °C 125 °C −25 to + 85 °C 260 K/W 120 K/W Fig.1 Block diagram TDA6800 and TDA6800T. March 1986 3 Philips Semiconductors Product specification Video modulator circuit CHARACTERISTICS VP = 5 V; Tamb = 25 °C; measured in Fig.1; unless otherwise specified PARAMETER Supply voltage range Supply current consumption Video input voltage Input impedance Voltage (d.c.) at video input (clamp voltage) Voltage (d.c.) at sound input Output voltage f = 50 MHz; RL = 75 Ω Output voltage f = 600 MHz; RL = 75 Ω Differential gain Differential phase Intermodulation (1,1 MHz) (note 1) Frequency shift Vb = 5%, f = 600 MHz Frequency shift Vb = 5%, f = 800 MHz Frequency drift 25 to 40 °C Frequency drift 15 to 55 °C Positive modulation (see Fig.3) Residual carrier voltage Cross modulation (note 2) Notes 1. Input signal: d.c. 0,45 V (V8-4 = 1,85 V) 4,4 MHz; input voltage (p-p) = 0,6 V 5,5 MHz; input voltage (p-p) = 1,26 V d.c. 1 V (V8-4 = 3,5 V) 5,5 MHz AM modulated, fm = 100 kHz m = 0,8; input voltage (p-p) = 2,27 V (including modulation) Vr α − − − 0,1 2,5 0,25 ∆f − − 300 ∆f − − 100 ∆f − tbf − ∆f − − 100 − −80 −60 V1 V6-7 V6-7 ∆G ∆φ − − − − − 2,5 13 10 − − − − − 10 10 V8 − 1,4 − I5 V8(p-p) R8 SYMBOL V5-4 4,5 − − 30 MIN. − 9 1 − TYP. 13 − − TDA6800 TDA6800T MA.


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