NTE7047 データシートの表示（PDF） - NTE Electronics

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NTE7047

Integrated Circuit TV Color Small Signal Sub System

NTE Electronics 

Electrical Characteristics (Cont’d): (TA = +25°C, VP = V7–6 = 12V, carrier 38.9MHz, negative

modulation unless otherwise specified)

Parameter

Symbol

Test Conditions

Min Typ Max Unit

Horizontal Synchronization Circuit (Sync Separator)

Required Sync Pulse Amplitude

V25 Note 19

Input Current, Pin25

I25 V25 > 5V

V25 = 0V

Horizontal Synchronization Circuit (First Control Loop)

200 750 – mV

–

8

–

µA

– –10 – mA

Holding Range PLL

±∆f

– 1500 2000 Hz

Catching Range PLL

±∆f

600 1500 – Hz

IF Input Signal at which the Time Constant V8–9 Strong to weak

is Switched (RMS Value)

– 2.2 – mV

Horizontal Synchronization Circuit (Second Control Loop)

Control Sensitivity

Control Range

Controlled Edge

∆td/∆to Note 21

td

– 100 –

–

25

–

µs

positive

Horizontal Synchronization Circuit (Phase Adjustment, via Second Control Loop)

Control Sensitivity

Maximum Allowed Phase Shift

α

–

25

– µA/µs

–

±2

–

µs

Horizontal Synchronization Circuit (Horizontal Oscillator, Pin23)

Free Running Frequency

Spread with Fixed External Components

Frequency Variation

Frequency Variation with Temperature

ffr R = 34.3kΩ, C = 2.7nF

∆f

∆ffr ∆VP = 9.5 to 13.2V

TC Note 26

– 15625 – Hz

–

–

4

%

–

–

2

%

– –1.6 – Hz/°C

Maximum Frequency Deviation at Start

∆ffr

of Horizontal Output

–

–

10 %

Frequency Variation when Only Noise

is Received

∆ffr Note 26

–

– 500 Hz

Horizontal Synchronization Circuit (Horizontal Output)

Output Limiting Voltage

Output Voltage LOW

Maximum Sink Current

Duty Cycle Output Signal

V26

V26 Isink = 10mA

I26

–

– 16.5 V

– 0.2 0.5 V

10

–

– mA

–

46

–

%

Rise Time of Output Pulse

tr

– 260 –

ns

Fall Time of Output pulse

tf

– 100 –

ns

Horizontal Synchronization Circuit (Flyback Input and Sandcastle Output, Note 22)

Input Current Required During

I27

Flyback Pulse

0.1 – 2.0 mA

Output Voltage During Burst Key Pulse

Output Voltage During Horizontal Blanking

Output Voltage During Vertical Blanking

Pulse Width, Burst Key Pulse

V27

V27

V27

tW 60Hz

50Hz

8

–

–

V

4.0 4.4 5.0 V

2.1 2.5 2.9 V

2.9 3.3 3.7 µs

3.2 3.6 4.0 µs

Pulse Width, Horizontal Blanking Pulse

Flyback Pulse Width

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