RF Data Sheet
VTBT5UF201
Combination Tuner/Demodulator
FEATURES
•Receiving Standard: USA
•Receiving Channels:
–VHF Section
–Low Band – Air: 2 to 6 CATV: (A-8) A-5 to B
–High Band – Air: 7 to 13 CATV: C to W + 11
–UHF Section
–Air: 14 to 69
–CATV: W + 12 to W + 84
•Receiving System: USA Standard M-System (NTSC)
•Channel Selection System: PLL Tuning
•Detection System: Dummy Synchronization Detection System, Intercarrier Sound Receiving System
•Nominal Input Impedance: RF 75 Ω
•Output Load Impedance:
–Video: 1 kΩ
–Audio: 4.7 kΩ
•Intermediate Frequency:
–Picture: 45.75 MHz
–Sound: 41.25 MHz
•Weight: 42 g ±10 g
•Applicable Standards:
–EIA Standard Number 544
–EIA Standard Number 16A
–FCC Standards
–UL Standard
COMB4-1 |
FUNCTIONAL DESCRIPTION
The VTBT5UF201 is a combination tuner and demodulator in one package. It is compatible with North American NTSC television broadcast signals. An internal Phase-Locked Loop circuit performs all of the required tuning functions. The tuner and demodulator blocks are internally connected. An IF sample port is provided for monitoring the signal level or frequency characteristics of the recovered IF signal. The RF connector is mounted on the end of the housing so that the smallest possible area is used on the rear panel of a final installation. Demodulated audio, video, and AFT outputs are provided. The AFT Mute function is available as well. The AGC control line from the demodulator to the tuner is not accessible to the system designer.
RF Data Sheet |
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VTBT5UF201 |
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Combination Tuner/Demodulator |
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UHF |
RF |
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U/V ONE CHIP AND IC |
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INPUT |
AMP |
INTERSTAGE |
MIX |
OSC |
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RESONANCE |
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TUNING |
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TUNING |
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CIRCUIT |
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CIRCUIT |
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CIRCUIT |
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IF |
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UHF/VHF |
U/V SEPARATE |
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AMP |
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IF TUNING |
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IN |
FILTER |
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CIRCUIT |
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VHF |
RF |
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INPUT |
AMP |
INTERSTAGE |
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OSC |
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RESONANCE |
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TUNING |
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TUNING |
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CIRCUIT |
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CIRCUIT |
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CIRCUIT |
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PLL CIRCUIT |
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SIF |
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VIDEO AMP |
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TRAP |
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VIDEO OUT |
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SIF |
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FILTER |
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PRE-AMP |
DET |
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SAW |
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OUT |
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SF IN |
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FILTER |
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AUDIO OUT |
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DEMODULATOR |
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IC |
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AFT OUT |
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AFT MUTE |
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RF AGC |
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COMB4-6 |
Figure 1. VTBT5UF201 Block Diagram
ELECTRICAL CHARACTERISTICS |
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Test Conditions (TYP.) |
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• Nominal Supply Voltage (TYP.) |
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BT: 31 V |
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BP: 5 V |
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BT: 31 V |
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– BM: 5 V |
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BP: 5 V |
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– Ambient Temperature 25°C ±5°C |
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– BM: 5 V |
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Relative Humidity 65% ±10% |
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Operating Voltage (TYP.) |
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Current Consumption (MAX.) |
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BT: 31 V ±2.0 V |
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– BT: 5 mA |
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BP: 5 V ±0.5 V |
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– BP: 16 mA |
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BM: 5 V ±0.5 V |
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– BM: 150 mA |
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Control: 5 V ±0.2 V |
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Breakdown Voltage (MIN.) |
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Temperature (TYP.) |
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Storage -20°C to +70°C |
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BT: 34 V |
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Operating -10°C to +60°C |
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BP: 5.5 V |
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BM: 5.5 V |
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2 |
RF Data Sheet |
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