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VT4T5UF2021
RF Data Sheet
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 * Sending Channels: - USA Channel 3 and 4 - CH 3: OPEN - CH 4: GND * Receiving and Sending 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 , Unbalanced - Video: 1 k, Unbalanced - Audio: 4.7 MIN., Unbalanced - Control: 30 k MIN., Unbalanced * Output Load Impedance: - RF: 75 - Video: 1 k - Audio: 4.7 k * Intermediate Frequency: - Picture: 45.75 MHz - Sound: 41.25 MHz * Weight: 72 g 10 g * Applicable Standards: - EIA Standard Number 544 - EIA Standard Number 16A - FCC Standards - UL Standard
COMB4-1
Combination Tuner/Demodulator/Modulator
FUNCTIONAL DESCRIPTION
The VT4T5UF2021 is a combination tuner, demodulator and modulator in one package. This unit is compatible with North American NTSC television broadcast signals. An internal Phase-Locked Loop circuit performs all of the required tuning functions. Digital control information is provided to the unit on I2C serial data bus. The tuner and demodulator blocks are internally connected, providing an IF sample point for test purposes. The modulator has separate video and audio inputs and control connections. This single package configuration is useful when there is no need to manipulate the AGC or IF signals prior to demodulation, and provides for a simplified system design. The RF connectors are mounted on the end of the housing so thatthe smallest possible area is used on the rear panel of the end product. The RF pass-through feature is electrically controlled via an external interface pin. Output channel 3 or 4 is also electrically selected by asserting 5 V or ground on an external pin. The internal tuner sample point is always active, allowing the tuner and demodulator functions to be used at all times, regardless of the condition of the RF pass-through and the modulator output. Demodulated audio, video AGC and AFT outputs are also provided. The AGC control line from the demodulator to the tuner is not accessible to the system designer.
RF Data Sheet
1
VT4T5UF2021
Combination Tuner/Demodulator/Modulator
ANT IN DISTRIBUTOR
RF SW RF SW
HPF
TV OUT
VIDEO IN
VIDEO CLAMPER
WHITE CLIPPER CH. SW
MODULATOR
BPF
SAW RESONATOR
RF CARRIER OSC FM MODULATOR
AMP AUDIO IN PRE-EMPHASIS
4.5 MHz TANK
UHF INPUT TUNING CIRCUIT U/V SEPARATE FILTER VHF INPUT TUNING CIRCUIT
RF AMP
U/V ONE CHIP AND IC INTERSTAGE TUNING CIRCUIT MIX OSC IF AMP
~ ~
RESONANCE CIRCUIT
IF TUNING CIRCUIT RESONANCE CIRCUIT
RF AMP
INTERSTAGE TUNING CIRCUIT
OSC
PLL CIRCUIT
SIF TRAP SIF FILTER
VIDEO AMP VIDEO OUT
PRE-AMP
DET SAW OUT FILTER DEMODULATOR IC
SF IN AUDIO OUT AFT OUT AFT MUTE
RF AGC
COMB3-6
Figure 1. VT4T5UF2021 Block Diagram
2
RF Data Sheet
Combination Tuner/Demodulator/Modulator
VT4T5UF2021
ELECTRICAL CHARACTERISTICS
* Nominal Supply Voltage (TYP.) - BM: 5 V - BT: 33 V - BP: 5 V - B: 5 V * Operating Voltage (TYP.) - BM: 5V 0.2 V - BT: 33 V 2.0 V - BP: 5 V 0.5 V - B: 5 V 0.5 V - Control: 5 V 0.2 V * Breakdown Voltage (MIN.) - BM: 5.5 V - BT: 34 V - BP: 5.5 V - B: 5.5 V * Test Conditions (TYP.) - BM: 5 V - BT: 33 V - BP: 5 V - B: 5 V - Ambient Temperature 25C 5C - Relative Humidity 65% 10% * Current Consumption (MAX.) - BM: 1.0 mA - BT: 5 mA - BP: 70 mA - B: 40 mA * Temperature (TYP.) - Storage -20C to +70C - Operating -10C to +60C * RF Output (Video System). Measured by standard demodulator input 1 Vp-p. - Modulation Factor 80% (TYP.), 80 5% - Differential Gain 2% (TYP.), 7% (MAX.) - Differential Phase 1.5 (TYP.), 8 (MAX.) - S/N Ratio 55 dB (TYP.), 48 dB (MIN.) - Frequency Characteristics 0 dB (TYP.), 0 3 dB - Change in Modulation Factor to APL 1% (TYP.), 5% (MAX.) * RF Output (Audio System). Measured by standard demodulator input 1 kHz, 1.24 Vp-p sincurve. - Modulation Factor 22.5 kHz (TYP.), 22.5 kHz - 5.5 kHz - Distortion Rate 0.3% (TYP.), 1% (MAX.) - S/N Ratio 56 dB (TYP.), 48 dB (MIN.) - Frequency Characteristics 0 dB (TYP.), 0 3 dB
* RF Output (Output System). Measured sync level at whilte 100% signal, input 1 Vp-p. - Video Carrier Center Frequency Accuracy 10 kHz (TYP.), 100 kHz (MAX.) - Sound Carrier Center Frequency Accuracy 4.5 MHz (TYP.), 4.5 MHz 7 kHz - Video Carrier Output Level 66 dB (TYP.), 66 3 dB - P/S Ratio 16 dB (TYP.), 16 3 dB * RF Output Spurious. - Specific Frequency 70 dB (TYP.), 60 dB (MIN.) - fp to fp + 4.5 MHz - Other Frequencies 50 dB (TYP.), 30 dB (MIN.) - 0 to 1 GHz (except fp 4.6 MHz) * RF Switch - Insertion Loss: 55 to 806 MHz - 4.0 dB (TYP.), 8.0 dB (MAX.) - Isolation: 61 to 72 MHz - 70 dB (TYP.), 60 dB (MIN.) - Return Loss: 61 to 72 MHz - 8.0 dB (TYP.), 4.0 dB (MIN.) * RF Switch Operation (dB) - Terminal Number 4: RF OUT RF IN (TYP.) - +5 V: OFF - Open: ON * Antenna Terminal Voltage - Modulator OSC Leakage 9.5 dB (MAX.) - Tuner OSC Leakage - Fundamental Wave 60 dB (MAX.) - Higher Harmonic 60 dB (MAX.) * Noise Figure (UHF AIR) - Maximum 11 dB (TYP.), 16 dB (MAX.) -
X = xi n S = ( Xi - x ) ( n - 2 ) , n = 10* (Tested channels including worst)
2
- Shall satisfy the requirements stated in FCC NF Sampling Plan C (effective January, 1980) - Noise figure measurement shall be based on FCC OST 50 (effective January, 1980) - XIRS 11 dB (TYP.), 16 dB (MAX.) -
X = xi n S = ( Xi - x ) ( n - 2 ) , n = 10* (Tested channels including worst)
2
- Noise figure measurement shall be based on FCC OST 50 (effective January, 1980)
NOTE: *A representative tuner test shall be conducted on the following channels and on the worst channel found CH 14 through CH69: Ch14, 20, 26, 32, 38, 44, 50, 56, 62, and 69.
RF Data Sheet
3
VT4T5UF2021
Combination Tuner/Demodulator/Modulator
* Image Rejection - At -47 dBM Input - VHF Air: 65 dB (TYP.), 60 dB (MIN.) - VHF CATV: 60 dB (TYP.), 50 dB (MIN.) - UHF: 55 dB (TYP.), 45 dB (MIN.) - At -17 dBM: Input - VHF Air: 60 dB (TYP.), 50 dB (MIN.) - VHF CATV: 50 dB (TYP.), 40 dB (MIN.) - UHF: 50 dB (TYP.), 35 dB (MIN.) * IF Rejection - At -47 dBM: Input - VHF Low: 60 dB (TYP.), 50 dB (MIN.) - VHF High: 100 dB (TYP.), 60 dB (MIN.) - UHF 100: dB (TYP.), 60 dB (MIN.) - At -17 dBM Input - VHF Low: 60 dB (TYP.), 45 dB (MIN.) - VHF High: 70 dB (TYP.), 50 dB (MIN.) - UHF: 70 dB (TYP.), 40 dB (MIN.) * CB Rejection - SI: 50 dB (TYP.), 40 dB (MIN.) - Undesirable: 0.535 MHz to 30 MHz - -7 Input (MIN.) - Desirable: 55.25 MHz to 83.25 MHz (CH 2 to Ch 6) - -66 Input (MIN.) * Specific Channel Rejection - Desirable 54 dB input; Undesireable 49 db input - CH A-3 CH A-5: 60 dB (TYP.); 55 dB (MIN.) - CH 6 CH A-5: 55 dB (TYP.); 50 dB (MIN.) - CH A-5 CH A-5: 60 dB (TYP.); 50 dB (MIN.) - CHP 5 CHS 6: 55 dB (TYP.); 52 dB (MIN.) - CHP 5 CHP 6: 60 dB (TYP.); 45 dB (MIN.) * Band Edge Tuning Margin - CH 2: -4.0 MHz (TYP.), -3.25 MHz (MIN.) - CH B: 3.0 MHz (TYP.), 2.0 MHZ (MIN.) - CH C: -4.0 MHz (TYP.), -3.25 MHz (MIN.) - CH W + 11: 3.0 MHz (TYP.), 2.0 MHz (MIN.) - CH W + 12: -5.0 MHz (TYP.), -3.25 MHz (MIN.) - CH 69: 5.0 MHz (TYP.), 2.0 MHz (MIN.) * PLL AC Characteristics - Setting Up Enable: Tsuen 1 s (MIN.) - Holding Enable: Thden 1 s (MIN.) - Setting Up Data: Tsuda 1 s (MIN.) - Holding Data: Thdda 1 s (MIN.) - Clock Level High: Thicl 1 s (MIN.) - Clock Level Low: Tlocl 1 s (MIN.) - Clock Rate: Trate 10 s (MIN.) - Signal Rising: Trise 1 s (MIN.) - Signal Falling: Tfall 1 s (MIN.)
* Picture Output. - Output Level (CH 10) 1 Vp-p (TYP.), 1 2 Vp-p - At 1 k termination, fp 70 dB, white 100% - Differential Gain (CH 10) 5 (TYP.), 10 (MAX.) - fp 90 dB, Sterstep 80 IRE - Differential Phase (CH 10) 1 (TYP.), 10 (MAX.) - fp 90 dB, Sterstep 80 IRE - S/N ratio 47 dB (TYP.), 43 dB (MIN.) - fp 70 dB, White 100%, 100 kHz to 4.2 MHz filter, Sctrap On - Frequency Characteristics (CH 10), fp 70 dB, multi-burst - 1.0 MHz: 0 dB (TYP.), -3 to +3 dB - 2.0 MHz: 0 dB (TYP.), -3 to +3 dB - 3.0 MHz: -1.0 dB (TYP.), -4.5 dB to +2.5 dB - 3.58 MHz: -1.0 dB (TYP.), 0 dB to 6 dB - Synchronized Ratio (CH 10) 28.5% (TYP.), 23.6% to 33.6% - fp 70 dB, SMPTE color bar * Sound Output (CH 10) - Output Level 480 mVrms (TYP.), 360 mVrms to 580 mVrms - fp 70 dB, SMPTE color bar 87.5% modulation, P/S 6 dB, fs 1 kHz, sin-curve 60% modulation, 75 s pre-emphasis - Distortion Rate 0.5% (TYP.), 3.0% (MAX.) - S/N Ratio 52 dB (TYP.), 42 dB (MAX.) - Frequency Characteristics 0 dB (TYP.), 0 3 dB - AM Removal Level 45 dB (TYP.), 35 dB (MAX.) * AFT Output - Output Voltage 2.5 V (TYP.), 1.75 V to 3.25 V - Frequency Accuracy 25 kHz (TYP.), 100 kHz (MAX.)
60 RADIATION (dB) 50 40 30 20 88 216 FREQUENCY (MHz) 46 dB
54 dB 43.5 dB
960
5000
COMB3-4
Figure 2. Radiation (3m Method)
4
RF Data Sheet
Combination Tuner/Demodulator/Modulator
VT4T5UF2021
DESIRED INPUT LEVEL (dB)
105
95
85
75
65 50 60 70 80 90 100 110 UNDESIRED INPUT LEVEL (dB)
NOTE: Input levels causing 1% cross modulation are shown in shaded area.
COMB3-2
Figure 3. Cross Modulation Between Next and Adjacent Channels
DESIRED INPUT LEVEL (dB)
105
95
85
75
65 50 60 70 80 90 100 110
UNDESIRED INPUT LEVEL (dB) NOTE: Input levels causing 1% cross modulation are shown in shaded area.
COMB3-3
Figure 4. Cross Modulation Between Adjacent Channels
tRISE tSUEN
tFALL
ENABLE tSUDA tHDDA tHDEN
90% 10%
DATA tHIEL
90% 10%
CLOCK tLOEL tRATE
90% 10%
COMB3-5
Figure 5. PLL AC Characteristics
RF Data Sheet
5
VT4T5UF2021
Combination Tuner/Demodulator/Modulator
OUTLINE DIMENSIONS
6
RF Data Sheet
Combination Tuner/Demodulator/Modulator
VT4T5UF2021
RF Data Sheet
7
VT4T5UF2021
Combination Tuner/Demodulator/Modulator
LIFE SUPPORT POLICY
SHARP components should not be used in medical devices with life support functions or in safety equipment (or similiar applications where component failure would result in loss of life or physical harm) without the written approval of an officer of the SHARP Corporation.
LIMITED WARRANTY
SHARP warrants to its Customer that the Products will be free from defects in material and workmanship under normal use and service for a period of one year from the date of invoice. Customer's exclusive remedy for breach of this warranty is that SHARP will either (i) repair or replace, at its option, any Product which fails during the warranty period because of such defect (if Customer promptly reported the failure to SHARP in writing) or, (ii) if SHARP is unable to repair or replace, refund the purchase price of the Product upon its return to SHARP. This warranty does not apply to any Product which has been subjected to misuse, abnormal service or handling, or which has been altered or modified in design or construction, or which has been serviced or repaired by anyone other than Sharp. The warranties set forth herein are in lieu of, and exclusive of, all other warranties, express or implied. ALL EXPRESS AND IMPLIED WARRANTIES, INCLUDING THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR USE AND FITNESS FOR A PARTICULAR PURPOSE, ARE SPECIFICALLY EXCLUDED. In no event will Sharp be liable, or in any way responsible, for any incidental or consequential economic or property damage. The above warranty is also extended to Customers of Sharp authorized distributors with the following exception: reports of failures of Products during the warranty period and return of Products that were purchased from an authorized distributor must be made through the distributor. In case Sharp is unable to repair or replace such Products, refunds will be issued to the distributor in the amount of distributor cost. SHARP reserves the right to make changes in specifications at any time and without notice. SHARP does not assume any responsibility for the use of any circuitry described; no circuit patent licenses are implied.
NORTH AMERICA
EUROPE
ASIA
SHARP Microelectronics of the Americas 5700 NW Pacific Rim Blvd., M/S 20 Camas, WA 98607, U.S.A. Phone: (360) 834-2500 Telex: 49608472 (SHARPCAM) Facsimile: (360) 834-8903 http://www.sharpsma.com
(c)1999 by SHARP Corporation
SHARP Electronics (Europe) GmbH Microelectronics Division Sonninstrae 3 20097 Hamburg, Germany Phone: (49) 40 2376-2286 Facsimile: (49) 40 2376-2232 http://www.sharpmed.com
SHARP Corporation Integrated Circuits Group 2613-1 Ichinomoto-Cho Tenri-City, Nara, 632, Japan Phone: (07436) 5-1321 Telex: LABOMETA-B J63428 Facsimile: (07436) 5-1532
Reference Code SMA99024

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