VT4T5UF2021 [SHARP]

Combination Tuner/Demodulator/Modulator; 组合调谐器/解调器/调制器


型号：	VT4T5UF2021
厂家：	SHARP ELECTRIONIC COMPONENTS
描述：	Combination Tuner/Demodulator/Modulator 组合调谐器/解调器/调制器
文件：	总8页 (文件大小：107K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

VT4T5UF2021

Combination Tuner/Demodulator/Modulator

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

COMB4-1

• Detection System: Dummy Synchronization Detec-

tion System, Intercarrier Sound Receiving System

• Nominal Input Impedance:

– RF: 75 Ω, Unbalanced

FUNCTIONAL DESCRIPTION

The VT4T5UF2021 is a combination tuner, demodu-

lator and modulator in one package. This unit is compat-

ible with North American NTSC television broadcast

signals. An internal Phase-Locked Loop circuit per-

forms 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 pur-

poses. The modulator has separate video and audio

inputs and control connections. This single package

configuration is useful when there is no need to manip-

ulate the AGC or IF signals prior to demodulation, and

provides for a simplified system design. The RF con-

nectors are mounted on the end of the housing so that-

the smallest possible area is used on the rear panel of

the end product.

– 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

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 func-

tions 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 demodula-

tor to the tuner is not accessible to the system designer.

– UL Standard

RF Data Sheet

VT4T5UF2021

Combination Tuner/Demodulator/Modulator

ANT

TV OUT

RF SW

HPF

DISTRIBUTOR

RF SW

BPF

WHITE

CLIPPER

VIDEO

CLAMPER

MODULATOR

CH.

CARRIER

OSC

SAW

RESONATOR

AMP

AUDIO

PRE-EMPHASIS

MODULATOR

4.5 MHz

TANK

U/V ONE CHIP AND IC

UHF

INPUT

TUNING

CIRCUIT

AMP

INTERSTAGE

TUNING

CIRCUIT

MIX

OSC

RESONANCE

CIRCUIT

AMP

U/V SEPARATE

FILTER

IF TUNING

CIRCUIT

VHF

AMP

INPUT

TUNING

CIRCUIT

INTERSTAGE

TUNING

CIRCUIT

OSC

RESONANCE

CIRCUIT

PLL CIRCUIT

VIDEO AMP

SIF

TRAP

VIDEO OUT

SIF

FILTER

PRE-AMP

DET

OUT

SAW

FILTER

SF IN

AUDIO OUT

DEMODULATOR

AFT OUT

AFT MUTE

RF AGC

COMB3-6

Figure 1. VT4T5UF2021 Block Diagram

RF Data Sheet

Combination Tuner/Demodulator/Modulator

VT4T5UF2021

• RF Output (Output System). Measured sync level at

whilte 100% signal, input 1 Vp-p.

ELECTRICAL CHARACTERISTICS

• Nominal Supply Voltage (TYP.)

– BM: 5 V

– 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

– 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

• 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)

– Control: 5 V ±0.2 V

• Breakdown Voltage (MIN.)

– BM: 5.5 V

• RF Switch

– BT: 34 V

– BP: 5.5 V

– B: 5.5 V

– 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.)

• 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%

• RF Switch Operation (dBµ)

– Terminal Number 4: RF OUT ← RF IN (TYP.)

– +5 V: OFF

– Open: ON

• Current Consumption (MAX.)

– BM: 1.0 mA

• Antenna Terminal Voltage

– Modulator OSC Leakage 9.5 dBµ (MAX.)

– Tuner OSC Leakage

– BT: 5 mA

– BP: 70 mA

– B: 40 mA

– Fundamental Wave 60 dBµ (MAX.)

– Higher Harmonic 60 dBµ (MAX.)

• Temperature (TYP.)

• Noise Figure (UHF AIR)

– Storage -20°C to +70°C

– Operating -10°C to +60°C

– Maximum 11 dB (TYP.), 16 dB (MAX.)

–

X = Σxi ⁄ n

• RF Output (Video System). Measured by standard

demodulator input 1 Vp-p.

S = Σ (Xi – x)²⁄ (n – 2), n = 10*

– 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.)

(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.)

–

• 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

X = Σxi ⁄ n

S = Σ (Xi – x)²⁄ (n – 2), n = 10*

(Tested channels including worst)

– Distortion Rate 0.3% (TYP.), 1% (MAX.)

– S/N Ratio 56 dB (TYP.), 48 dB (MIN.)

– Frequency Characteristics 0 dB (TYP.), 0 ±3 dB

– Noise figure measurement shall be based on

FCC OST 50 (effective January, 1980)

NOTE: *A representative tuner test shall be conducted on the follow-

ing 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

VT4T5UF2021

Combination Tuner/Demodulator/Modulator

• Image Rejection

• Picture Output.

– At -47 dBM Input

– 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 fil-

ter, 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%

– 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.)

– fp 70 dBµ, SMPTE color bar

• CB Rejection

• Sound Output (CH 10)

– 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.)

– Output Level 480 mVrms (TYP.), 360 mVrms to

580 mVrms

– fp 70 dBµ, SMPTE color bar 87.5% modula-

tion, P/S 6 dB, fs 1 kHz, sin-curve 60% modu-

lation, 75 µs pre-emphasis

• Specific Channel Rejection

– 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.)

– 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.)

• AFT Output

– Output Voltage 2.5 V (TYP.), 1.75 V to 3.25 V

– Frequency Accuracy 25 kHz (TYP.), 100 kHz (MAX.)

• 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.)

54 dBµ

46 dBµ

43.5 dBµ

• 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.)

88 216

960

5000

FREQUENCY (MHz)

COMB3-4

Figure 2. Radiation (3m Method)

RF Data Sheet

Combination Tuner/Demodulator/Modulator

VT4T5UF2021

105

100

110

UNDESIRED INPUT LEVEL (dBµ)

NOTE: Input levels causing 1% cross modulation are shown in shaded area.

COMB3-2

Figure 3. Cross Modulation Between Next and Adjacent Channels

105

UNDESIRED INPUT LEVEL (dBµ)

NOTE: Input levels causing 1% cross modulation are shown in shaded area.

100

110

COMB3-3

Figure 4. Cross Modulation Between Adjacent Channels

t_RISEt_SUEN

t_FALL

90%

10%

ENABLE

t_SUDAt_HDDA

t_HDEN

90%

10%

DATA

t_HIEL

90%

10%

CLOCK

t_LOEL

t_RATE

COMB3-5

Figure 5. PLL AC Characteristics

RF Data Sheet

VT4T5UF2021

Combination Tuner/Demodulator/Modulator

OUTLINE DIMENSIONS

RF Data Sheet

Combination Tuner/Demodulator/Modulator

VT4T5UF2021

RF Data Sheet

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 Corporation

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

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

VT4T5UF2021 [SHARP]

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