LM1205N 판매점 - 130 MHz/85 MHz RGB Video Amplifier System with Blanking

LM1205N 반도체 회로 부품 판매점

130 MHz/85 MHz RGB Video Amplifier System with Blanking

National Semiconductor

January 1996

LM1205 LM1207

130 MHz 85 MHz RGB Video Amplifier System with

Blanking

General Description

The LM1205 LM1207 is a very high frequency video amplifi-

er system intended for use in high resolution RGB monitor

applications In addition to the three matched video amplifi-

ers the LM1205 LM1207 contains three gated single end-

ed input black level clamp comparators for brightness con-

trol three matched DC controlled attenuators for contrast

control and three DC controlled sub-contrast attenuators

providing gain trim capability for white balance All DC con-

trol inputs offer high input impedance and an operation

range from 0V to 4V for easy interface to bus controlled

alignment systems The LM1205 LM1207 also contains a

blanking circuit which clamps the video output voltage dur-

ing blanking to within 0 1V above ground This feature pro-

vides blanking capability at the cathodes of the CRT A spot

killer is provided for CRT phosphor protection during power-

down

Features

Y Three wideband video amplifiers 130 MHz (LM1205)

b3 dB (4 VPP output)

Y Matched (g0 1 dB or 1 2%) attenuators for contrast

control

Y Three externally gated single ended input comparators

for cutoff and brightness control

Y 0V to 4V high input impedance DC contrast control

(l40 dB range)

Y 0V to 4V high input impedance DC drive control for

each video amplifier (b6 dB to 0 dB range)

Y Spot killer blanks output when VCC k 10 6V

Y Capable of 7 VPP output swing (slight reduction in

bandwidth)

Y Output stage blanking

Y Output stage directly drives most hybrid or discrete

CRT drivers

Applications

Y High resolution RGB CRT monitors

Y Video AGC amplifiers

Y Wideband amplifiers with gain and DC offset controls

Y Interface amplifiers for LCD or CCD systems

Block and Connection Diagram

C1996 National Semiconductor Corporation TL H 11881

FIGURE 1

Order Number LM1205N or LM1207N

See NS Package Number N28B

RRD-B30M66 Printed in U S A

TL H 11881 – 1

Absolute Maximum Ratings (Note 1)

If Military Aerospace specified devices are required

please contact the National Semiconductor Sales

Office Distributors for availability and specifications

Supply Voltage (VCC)

Pins 3 11 22 23 25 (Note 3)

15V

Peak Video Output Source Current

(Any One Amp) Pins 17 20 or 26

28 mA

Voltage at Any Input Pin (VIN)

VCC t VIN t GND

Power Dissipation (PD)

(Above 25 C Derate Based on iJA and TJ)

2 5W

Thermal Resistance (iJA)

50 C W

Junction Temperature (TJ)

150 C

ESD Susceptibility (Note 4)

2 kV

Pins 12 13 and 14

1 9 kV

Storage Temperature

b65 C to 150 C

Lead Temperature (Soldering 10 sec )

265 C

Operating Ratings (Note 2)

Temperature Range

b20 C to 80 C

Supply Voltage (VCC)

10 8V s VCC s 13 2V

DC Electrical Characteristics See DC Test Circuit (Figure 2 ) TA e 25 C VCC1 e VCC2 e 12V V12 e 4V

V14 e 0V Vcut-off e 1 0V V13 e 4V Vdrive e 4V unless otherwise stated

Symbol

Parameter

Conditions

Typical Limit

(Note 5) (Note 6)

Units

V4 6 9

RIN

V14l

V14h

I14l

I14h

Iclamp

Ibias

V13l

V13h

I13l

I13h

VOL

VOH

VO(1V)

DVO(1V)

VOL(blanked)

I12 15 18 or 28

I16 19 and 27

Vspot

Supply Current

Video Amplifier Input Bias Voltage

Video Input Resistance

Clamp Gate Low Input Voltage

Clamp Gate High Input Voltage

Clamp Gate Low Input Current

Clamp Gate High Input Current

Clamp Cap Charge Current

Clamp Cap Bias Discharge Current

Blank Gate Low Input Voltage

Blank Gate High Input Voltage

Blank Gate Low Input Current

Blank Gate High Input Current

Video Output Low Voltage

Video Output High Voltage

Video Black Level Output Voltage

Video D Black Level Output Voltage

Video Output Blanked Voltage

Contrast Drive Control Input Current

Cut-Off Control Input Current (All Inputs)

Spot Killer Voltage

VCC1 a VCC2 RL e % (Note 7)

Any One Amplifier

Clamp Comparators On

Clamp Comparators Off

V14 e 0V

V14 e 12V

Clamp Comparators On

Clamp Comparators Off

Blank Gate On

Blank Gate Off

V13 e 0V

V13 e 12V

Vcut-off e 0V

Vcut-off e 9V

Vcut-off e 1V

Between Any Two Amplifiers

Vcut-off e 1V

V13 e 0V

Vcontrast e Vdrive e 0V to 4V

Vcut-off e 0V to 4V

VCC Adjusted to Activate

0 01

g750

500

b8 5

0 01

0 15

g100

b250

b500

10 4

105

g500

b11 0

mA (max)

V (max)

V (min)

mA (max)

mA (min)

V (max)

V (min)

mA (max)

V (max)

V (min)

V (Note 8)

mV (max)

70 mV (max)

10 8 V (max)

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LM1205N amplifier

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LM1205N 반도체 회로 부품 판매점

130 MHz/85 MHz RGB Video Amplifier System with Blanking

국내 전력반도체 판매점

일반적인 전자부품 판매점

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