SHARP VT4T5UF2021

VT4T5UF2021
RF Data Sheet
Combination Tuner/Demodulator/Modulator
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 Ω, Unbalanced
– Video: 1 kΩ, Unbalanced
– Audio: 4.7 Ω MIN., Unbalanced
– Control: 30 kΩ MIN., Unbalanced
• Output Load Impedance:
– RF: 75 Ω
– Video: 1 kΩ
– Audio: 4.7 kΩ
• 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
RF Data Sheet
COMB4-1
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.
1
VT4T5UF2021
Combination Tuner/Demodulator/Modulator
ANT
IN
RF SW
HPF
TV OUT
DISTRIBUTOR
RF SW
VIDEO
IN
WHITE
CLIPPER
VIDEO
CLAMPER
CH.
SW
SAW
RESONATOR
BPF
MODULATOR
RF
CARRIER
OSC
AMP
AUDIO
IN
FM
MODULATOR
PRE-EMPHASIS
4.5 MHz
TANK
UHF
INPUT
TUNING
CIRCUIT
RF
AMP
U/V ONE CHIP AND IC
INTERSTAGE
TUNING
CIRCUIT
MIX
OSC
~
IF
AMP
U/V SEPARATE
FILTER
VHF
INPUT
TUNING
CIRCUIT
RF
AMP
INTERSTAGE
TUNING
CIRCUIT
OSC
RESONANCE
CIRCUIT
IF TUNING
CIRCUIT
~
RESONANCE
CIRCUIT
PLL CIRCUIT
SIF
TRAP
VIDEO AMP
VIDEO OUT
SIF
FILTER
PRE-AMP
DET
SAW
OUT
FILTER
SF IN
AUDIO OUT
DEMODULATOR
IC
AFT OUT
AFT MUTE
RF AGC
COMB3-6
Figure 1. VT4T5UF2021 Block Diagram
2
RF Data Sheet
Combination Tuner/Demodulator/Modulator
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 25°C ±5°C
– Relative Humidity 65% ±10%
• Current Consumption (MAX.)
– BM: 1.0 mA
– BT: 5 mA
– BP: 70 mA
– B: 40 mA
• Temperature (TYP.)
– Storage -20°C to +70°C
– Operating -10°C to +60°C
• 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
VT4T5UF2021
• 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 dBµ (TYP.),
66 ±3 dBµ
– 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 (dBµ)
– Terminal Number 4: RF OUT ← RF IN (TYP.)
– +5 V: OFF
– Open: ON
• Antenna Terminal Voltage
– Modulator OSC Leakage 9.5 dBµ (MAX.)
– Tuner OSC Leakage
– Fundamental Wave 60 dBµ (MAX.)
– Higher Harmonic 60 dBµ (MAX.)
• Noise Figure (UHF AIR)
– Maximum 11 dB (TYP.), 16 dB (MAX.)
–
X = Σxi ⁄ n
2
S = Σ ( Xi – x ) ⁄ ( n – 2 ) , n = 10*
(Tested channels including worst)
– 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 = Σxi ⁄ n
2
S = Σ ( Xi – x ) ⁄ ( n – 2 ) , n = 10*
(Tested channels including worst)
– 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
• 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 dBµ input; Undesireable 49 dbµ 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 µs (MIN.)
– Holding Enable: Thden 1 µs (MIN.)
– Setting Up Data: Tsuda 1 µs (MIN.)
– Holding Data: Thdda 1 µs (MIN.)
– Clock Level High: Thicl 1 µs (MIN.)
– Clock Level Low: Tlocl 1 µs (MIN.)
– Clock Rate: Trate 10 µs (MIN.)
– Signal Rising: Trise 1 µs (MIN.)
– Signal Falling: Tfall 1 µs (MIN.)
4
• Picture Output.
– Output Level (CH 10) 1 Vp-p (TYP.), 1 ±2 Vp-p
– At 1 kΩ termination, fp 70 dBµ, white 100%
– Differential Gain (CH 10) 5° (TYP.), 10° (MAX.)
– fp 90 dBµ, Sterstep 80 IRE
– Differential Phase (CH 10) 1° (TYP.), 10° (MAX.)
– fp 90 dBµ, Sterstep 80 IRE
– S/N ratio 47 dB (TYP.), 43 dB (MIN.)
– fp 70 dBµ, White 100%, 100 kHz to 4.2 MHz filter, Sctrap On
– Frequency Characteristics (CH 10), fp 70 dBµ,
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 dBµ, SMPTE color bar
• Sound Output (CH 10)
– Output Level 480 mVrms (TYP.), 360 mVrms to
580 mVrms
– fp 70 dBµ, SMPTE color bar 87.5% modulation, P/S 6 dB, fs 1 kHz, sin-curve 60% modulation, 75 µs 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 (dBµ)
• 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.)
Combination Tuner/Demodulator/Modulator
50
54 dBµ
43.5 dBµ
46 dBµ
40
30
20
88
216
960
5000
FREQUENCY (MHz)
COMB3-4
Figure 2. Radiation (3m Method)
RF Data Sheet
DESIRED INPUT LEVEL (dBµ)
Combination Tuner/Demodulator/Modulator
VT4T5UF2021
105
95
85
75
65
50
60
70
80
90
100
110
UNDESIRED INPUT LEVEL (dBµ)
NOTE: Input levels causing 1% cross modulation are shown in shaded area.
COMB3-2
DESIRED INPUT LEVEL (dBµ)
Figure 3. Cross Modulation Between Next and Adjacent Channels
105
95
85
75
65
50
60
70
80
90
100
110
UNDESIRED INPUT LEVEL (dBµ)
NOTE: Input levels causing 1% cross modulation are shown in shaded area.
COMB3-3
Figure 4. Cross Modulation Between Adjacent Channels
tRISE tSUEN
tFALL
90%
10%
ENABLE
tSUDA tHDDA
tHDEN
90%
10%
DATA
tHIEL
90%
10%
CLOCK
tLOEL
tRATE
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
RF Data Sheet
VT4T5UF2021
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
SHARP Electronics (Europe) GmbH
Microelectronics Division
Sonninstraße 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
©1999 by SHARP Corporation
Reference Code SMA99024