|
Details, datasheet, quote on part number:LM1202
| |
| Part: | LM1202 |
| Category: | Multimedia => Video => Amplifiers => Preamp/Amp |
| Description: | 230 MHZ Video Amplifier System (discontinued) |
| Company: | National Semiconductor Corporation |
| Datasheet: | Download LM1202 datasheet File size : 298 kB |
| Request For quote: | Find where to buy LM1202
|
| |
Datasheet text preview:
LM1202 230 MHz Video Amplifier System
December 1995
LM1202 230 MHz Video Amplifier System
General Description
The LM1202 is a very high frequency video amplifier system intended for use in high resolution monochrome or RGB color monitor applications In addition to the wideband video amplifier the LM1202 contains a gated differential input black level clamp comparator for brightness control a DC controlled attenuator for contrast control and a DC controlled sub contrast attenuator for drive control The DC control for the contrast attenuator is pinned out separately to provide a more accurate control system for RGB color monitor applications All DC controls offer a high input impedance and operate over a 0V to 4V range for easy interface to bus controlled alignment systems The LM1202 operates from a nominal 12V supply but can be operated with supply voltages down to 8V for applications that require reF duced IC package power dissipation characteristics
Y Y
Y
Y
Y
Y
Externally gated comparator for brightness control 0V to 4V high input impedance DC contrast control (l40 dB range) 0V to 4V high input impedance DC drive control ( g 3 dB range) Easy to parallel three LM1202s for optimum color tracking in RGB systems Output stage clamps to 0 65V and provides up to 9V output voltage swing Output stage directly drives most hybrid or discrete CRT amplifier stages
Applications
High resolution CRT monitors Video switches Video AGC amplifier Wideband amplifier with gain and DC offset control
eatures
Y Y
Wideband video amplifier (fb3dB e 230 MHz at VO e 4 VPP) tr tf e 1 5 ns at VO e 4 VPP
Block and Connection Diagram
TL H 11440 1
Order Number LM1202N or LM1202M See NS Package Number N20A or M20B
C1996 National Semiconductor Corporation
TL H 11440
RRD-B30M66 Printed in U S A
Absolute Maximum Ratings (Note 1)
p If Military Aerospace specified devices are required lease contact the National Semiconductor Sales S Office Distributors for availability and specifications upply Voltage VCC Pins 4 7 16 to Ground Pins 5 13 15 Voltage at Any Input Pin (VIN) Video Output Current (I17) Package Power Dissipation at TA e 25 C (Above 25 C Derate Based iJA and TJ) Package Thermal Resistance (iJA) N20A M20B 13 5V VCC t VIN t GND 28 mA 1 56W Junction Temperature (TJ) Storage Temperature Range (Tstg) Lead Temperature N Package (Soldering 10 sec ) ESD Susceptibility Human Body Model 100 pF Discharged through a 1 5k Resistor
b 65
150 C C to a 150 C 265 C 1 5 kV
Operating Ratings (Note 2)
Temperature Range
b 20
C to a 80 C
68 C W 90 C W
Supply Voltage (VCC)
8V s VCC s 13 2V
V C Electrical Characteristics See Test Circuit (Figure 1) TA e 25 C V4 e V7 e V16 e 12V S1 Open D 1 S9 e 4V V8 e 4V V9 e 4V V14 e 0V unless otherwise noted ymbol IS 4 7 16 V6 V14L V14H I14L I14H I12 a I12b V17L V17H VOS Parameter Total Supply Current Video Input Bias Voltage 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 Discharge Current Video Output Low Voltage Video Output High Voltage Comparator Input Offset Voltage Clamp Comparator On Clamp Comparator Off V14 e 0V V14 e 12V V12 e 0V V12 e 5V V12 e 0V V12 e 6V V18 b V19
b0 5
Conditions RLoad e % (Note 5)
Typical (Note 3) 48 24
Limit (Note 4) 60 2 08 2
Units mA (max) V (min) V (max) V (min) mA mA
0 005 800
b 800
500
b 500
mA (min) mA (min) V (max) V (min) mV (max)
02 10 15
0 65 9
g 50
V C Electrical Characteristics See Test Circuit (Figure 1) TA e 25 C V4 e V7 e V16 e 12V S1 Closed A 1 S 9 e 4V V8 e 4V V9 e 4V V14 e 0V unless otherwise noted ymbol RIN AV max DAV 2V DAV 0 5V D Drive THD fb3 dB tr tf Parameter Video Amplifier Input Resistance Video Amplifier Gain Attenuation at 2V Attenuation at 0 5V D Gain Range Video Amplifier Distortion Video Amplifier Bandwidth (Note 6) Output Rise Time (Note 6) Output Fall Time (Note 6) Conditions fIN e 12 kHz V8 e 4V V9 e 4V Ref AV max V8 e 2V Ref AV max V8 e 0 5V V9 e 0V to 4V VO e 4 VPP fIN e 12 kHz VO e 4 VPP VO e 4 VPP VO e 4 VPP Typical (Note 3) 20 20
b6 b 38 b 23
Limit (Note 4)
Units kX
16
V V (min) dB dB (min) dB (min) % (max) MHz
6 05 230 15 15
5 1
2 2
ns (max) ns (max)
http
www national com
2
Electrical Characteristics (Continued)
Note 1 Absolute Maximum Ratings indicate limits beyond which damage to the device may occur ote 2 Operating Ratings indicate conditions for which the device is functional but do not guarantee specific performance limits For guaranteed specifications and test conditions see the Electrical Characteristics The guaranteed specifications apply only for the test conditions listed Some performance characteristics may N degrade when the device is not operated under the listed test conditions Note 3 Typical specifications are specified at a 25 C and represent the most likely parametric norm Note 4 Tested limits are guaranteed to National's AOQL (Average Outgoing Quality Level) ote 5 The supply current specified is the quiescent current for VCC1 VCC2 and VCC3 with RLoad e % see Figure 1's test circuit The total supply current also depends on the output load RLoad The increase in device power dissipation due to RLoad must be taken into account when operating the device at the maximum N ambient temperature ote 6 When measuring video amplifier bandwidth or pulse rise and fall times a double sided full ground plane printed circuit board is recommended The T asured rise and fall times are effective rise and fall times taking into account the rise and fall times of the generator and the oscilloscope me
est Circuit
TL H 11440 2
FIGURE 1 LM1202 Test Circuit
3
http
www national com
|
|
