NTE7048 データシートの表示（PDF） - NTE Electronics

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NTE7048

Integrated Circuit NTSC Decoder w/Fast RGB Blanking

NTE Electronics 

Electrical Characteristics (Cont’d): (TA = +25°C, VP = 12V, All voltages referenced to Pin19, unless

otherwise specified)

Parameter

Symbol Test Conditions Min Typ Max Unit

RGB Matrix and Amplifiers (Cont’d)

Relative Spread between the R, G, and B

Output Signals (Black–White)

–

–

10 %

Relative Black–Level Variation between the Three

Channels During Variation of Contrast

Note 13

–

–

20 mV

Relative Black–Level Variation between the Three

Channels During Variation of Brightness

Note 14

–

–

20 mV

Blanking Level at the RGB Outputs

Vblk

Differential Drift of the Blanking Levels Over a

∆V

Temperature Range of 40°C

1.95 2.15 2.35 V

–

0

20 mV

Tracking of Output Black Level with Supply

Voltage

Signal–to–Noise Ratio of Output Signals

DVbl x Vf

Vbl DVF

S/N

Note 15

1.0 1.05 1.1

62

–

– dB

Residual 3.58MHz Signal at RGB Outputs

(Peak–to–Peak Value)

VR(p–p)

–

50

75 mV

Residual 7.1MHz Signal at the RGB Outputs

(Peak–to–Peak Value)

–

50

75 mV

Output Impedance

Frequency Response of Total Luminance and

RGB Amplifier Circuits for f = 0 to 5MHz

|Z10|

|Z11|

|Z12|

α

Note 16

–

–

50 Ω

–

–

50 Ω

–

–

50 Ω

–

–

–3 dB

Sandcastle Input

Level at which the RGB Blanking is Activated

V7

Level at which the Burst Gate Clamping Pulses

V7

are Separated

1.0

1.5

2.0 V

6.5

7.0

7.5 V

Delay between Black Level Clamping and

td

Burst Gating Pulse

300 375 450 ns

Input Current

Fast Blanking

–I7

V7 = 0 to 0.8V

–

–

–1 mA

I7

V7 = 1V to 8V

–

–

–40 µA

V7 = 8.5V to 12V

–

–

2 mA

Level at which the Fast Blanking is Activated

V11

(Pin11)

3.5

–

–

V

Allowable Voltage at Blanking Input

V11

Delay between Fast Blanking Input and Output

td

Input Current

I11

V11 = 3.5V

Difference between Normal Black–Level and the

Fast Blanking Black–Level

–

–

5

V

–

40

– ns

–

160

– µA

–

–0.9

–

V

Note13. During variations of contrast (10dB) at nominal saturation.

Note14. During variations of brightness (±1V) at nominal controls.

Note15. The signal–to–noise ratio is specified as peak–to–peak signal with respect to RMS noise.

The effective bandwidth is 5MHz.

Note16. Disconnected peaking capacitor.

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