NTE1784 查看數據表（PDF） - NTE Electronics

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NTE1784

Integrated Circuit TV Horizontal Processor

NTE Electronics 

Electrical Characteristics (Cont’d): (TA = +25°C, VS = 12V unless otherwise specified)

Parameter

Symbol

Test Conditions

Min Typ Max

Composite Blanking and Key Pulse (Cont’d)

Phase Relation between Trailing Edge

tSK

of Key Pulse and Middle of Sync

Input Pulse

– 2.7 –

Key Pulse Duration

Delay between Flyback Pulse and

Blanking Pulse

tK

ttb V6 = 1.7V

3.5 3.8 –

–

– 0.2

Internal Gating Pulse

Gating Pulse Duration

tq

Phase Relation between Middle of Sync

t

Pulse and Trailing and Leading Edge

of Gating Pulse

– 7.5 –

– 3.75 –

Coincidence Detector

Output Voltage

V11 With coincidence

Without coincidence

– 6.8 –

–

–

4

Peak Output Current

I11

VCR Switch

– 0.5 –

Input Voltage

V11

Output Current

–I11

I11

Time Constant Switch

0 to 4 or 8.5 to 12

35

–

–

0.4 –

–

Output Voltage

Output Resistance

Oscillator

V12

R12 4.5V < V11 < 8V

V11 > 8.5V or V11 < 4V

–

3

–

– 100 –

–

40

–

Low Level Threshold Voltage

V14

High Level Threshold Voltage

V14

Charge Current

I14

Discharge Current

I14

Current Source Supply Voltage

V15

Current Source Supply Current

I15

Free–Running Frequency

fo

Adjustment Range

– 5.4 –

– 8.2 –

– 0.6 –

– 0.3 –

–

3

–

– 0.3 –

– 15625 –

– ±10 –

Frequency Control Sensitivity

–

52

–

Frequency Change when VS Drops to 4V

Oscillator–Flyback Pulse Phase Comparator

–

– ±10

Control Voltage Range

V5

Peak Control Current

I5

Input Current (Blocked Phase Detector)

I5

Permissible Delay between Output Pulse

td

Leading Edge and Flyback Pulse

Leading Edge

9.4 to 8.2

–

– ±0.5

–

–

5

– tp – tf –

Static Control Error

–

– 0.2

Unit

µs

µs

µs

µs

µs

V

V

mA

V

µA

mA

V

Ω

kΩ

V

V

mA

mA

V

mA

Hz

%

Hz/µA

%

V

mA

µA

µs

%

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