NTE7047 查看數據表（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 (Cont’d) (Flyback Input and Sandcastle Output, Note 22)

Vertical Blanking Pulse

50Hz divider in search window –

21

– lines

60Hz divider in search window –

17

– lines

50Hz divider in narrow window –

25

– lines

60Hz divider in narrow window –

21

– lines

Delay Between Start of Sync Pulse at

the Video Output and the Burst Key

Pulse

Trailing edge, 60Hz

Rising edge

–

– 9.3 µs

4.7 5.4 6.1 µs

Horizontal Synchronization Circuit (Coincidence Detector)

Voltage for Synchronized Condition

V22

Voltage for No Signal Condition

V22

Switching Level to Switch the Phase

V22

Detector from Fast to Slow

– 9.8 –

V

– 1.5 –

V

6.2 6.7 7.2 V

Hysteresis Slow to Fast

V22

Switching Level to Activate the Mute

V22

Function (Transmitter Identification)

– 0.6 –

V

2.5 2.8 3.1 V

Hysteresis Mute Function

V22

Delay Time of Mute Release after

Transmitter Insertion

–

2

–

V

–

– 300 µs

Allowable Load on Pin22

–

–

10 µA

External Video Mode

V22

Current at Pin22

I22 V22 = 0V

Vertical Circuit (Vertical Ramp Generator, Note 24)

–

– 0.7 V

–

– 0.8 mA

Input Current During Scan

Discharge Current During Retrace

Sawtooth Amplitude (peak–to–peak value)

Interlace Timing of the Internal Pulses

I2

I2

V2(p–p)

–

–

2

µA

– 0.8 – mA

– 1.9 –

V

30 32 34 µs

Vertical Circuit (Vertical Output, Note 24)

Available Output Current

I3 V3 = 4V

Maximum Output Voltage

V3 I3 = 0.1mA

Vertical Circuit (Vertical Feedback Input, Note 24)

–

–

3 mA

4.4 5.0 –

V

Input Voltage, DC Component

Input Voltage, AC Component

(peak–to–peak value)

V4

V4(p–p)

2.9 3.3 3.7 V

–

1

–

V

Input Current

Internal Precorrection to Sawtooth

Deviation Amplitude

I4

∆tp

50Hz/60Hz

–

–

12 µA

–

3

–

%

–

–

2

%

Temperature Dependence of the

Amplitude

TA = +20°C to +65°C

–

–

2

%

Vertical Circuit (Vertical Guard, Note 24, Note 25)

Active Switching Level at a Deviation

with Respect to the DC Feedback

Level: Guard Level LOW

∆V4 V27 = 2.5V

– 2.1 –

V

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