LM1203BN National Semiconductor, LM1203BN Datasheet
LM1203BN
Specifications of LM1203BN
Available stocks
Related parts for LM1203BN
LM1203BN Summary of contents
Page 1
... Low impedance output driver Y Stable on a single sided board Y Improvements over LM1203 100 MHz vs 70 MHz bandwidth Y V low Y OUT Built in power down spot killer Y 28-Lead Molded DIP Order Number LM1203BN See NS Package Number N28B RRD-B30M66 Printed January 1996 3 dB 15V 11489– 1 ...
Page 2
... Absolute Maximum Ratings If Military Aerospace specified devices are required please contact the National Semiconductor Sales Office Distributors for availability and specifications Supply Voltage ( Pins (Note 3) Peak Video Output Source Current (Any 1A) Pins Voltage at Any Input Pin ( Power Dissipation ( (Above 25 C Derate ...
Page 3
AC Electrical Characteristics Closed V14 0V V15 4V unless otherwise stated e e Symbol Parameter A Video Amplifier Gain V max V Attenuation Attenuation Absolute Gain Match A V match V A ...
Page 4
Typical Performance Characteristics Contrast vs Frequency http www national com FIGURE 2 LM1203B Test Circuit V 12V unless otherwise specified 11489 – 11489 – 3 ...
Page 5
Typical Performance Characteristics Crosstalk vs Frequency Frequency Response Using Various Peaking Caps Attenuation vs Contrast Voltage V 12V unless otherwise specified (Continued 11489– 11489 – ...
Page 6
FIGURE 3 LM1203B Typical Application 11489 – 7 ...
Page 7
Applications Information Figure 4 shows the block diagram of a typical analog RGB color monitor The RGB monitor is used with CAD CAM work stations PC’s arcade games and in a wide range of other applications that benefit from the ...
Page 8
Circuit Description (Continued) VIDEO AMPLIFIER SECTION Figure simplified schematic of one of the three video amplifiers along with the recommended external compo- nents The IC pin numbers are circled and all external com- ponents are shown outside ...
Page 9
Circuit Description (Continued) collector of Q12 is buffered and level shifted down by Q13 Q14 and Q15 to the base of the output emitter follower Q16 A 50 decoupling resistor is included in series with the emit- ter of Q16 ...
Page 10
Circuit Description (Continued) CLAMP GATE AND CLAMP COMPARATOR SECTION Figures 8 and 9 show simplified schematics of the clamp gate and clamp comparator circuits The clamp gate circuit (Figure 8) consists of a PNP input buffer transistor (Q46) a PNP ...
Page 11
Circuit Description (Continued) FIGURE 9 Simplified Schematic of LM1203B Clamp Comparator Circuits 11489– 13 http www national com ...
Page 12
Additional Applications of the LM1203B Figure 10 shows the configuration for a three channel high frequency amplifier with non gated DC feedback Pin 14 is tied low to turn on the clamp comparators (feedback amplifi- ers) The inverting inputs (Pins ...
Page 13
Additional Applications of the LM1203B Figure 11 shows a complete RGB video preamplifier circuit using the LM1203B A quad Exclusive-OR (MM74HC86) is used to generate the back porch clamp sig- nal from the composite sync input signal The composite H ...
Page 14
LM1203B versus LM1203 LM1203B is an improved version of the LM1203 RGB video amplifier system and is pin and function compatible with the LM1203 LM1203B’s output voltage can swing as low as 0 15V as opposed for ...
Page 15
15 http www national com ...
Page 16
... Italiano National does not assume any responsibility for use of any circuitry described no circuit patent licenses are implied and National reserves the right at any time without notice to change said circuitry and specifications Order Number LM1203BN NS Package Number N28B 2 A critical component is any component of a life ...