Motor de Búsqueda de Datasheet de Componentes Electrónicos
  Spanish  ▼
ALLDATASHEET.ES

X  

LM1203N Datasheet(PDF) 10 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
No. de pieza LM1203N
Descripción Electrónicos  RGB Video Amplifier System
Download  16 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Fabricante Electrónico  NSC [National Semiconductor (TI)]
Página de inicio  http://www.national.com
Logo NSC - National Semiconductor (TI)

LM1203N Datasheet(HTML) 10 Page - National Semiconductor (TI)

Back Button LM1203N Datasheet HTML 6Page - National Semiconductor (TI) LM1203N Datasheet HTML 7Page - National Semiconductor (TI) LM1203N Datasheet HTML 8Page - National Semiconductor (TI) LM1203N Datasheet HTML 9Page - National Semiconductor (TI) LM1203N Datasheet HTML 10Page - National Semiconductor (TI) LM1203N Datasheet HTML 11Page - National Semiconductor (TI) LM1203N Datasheet HTML 12Page - National Semiconductor (TI) LM1203N Datasheet HTML 13Page - National Semiconductor (TI) LM1203N Datasheet HTML 14Page - National Semiconductor (TI) Next Button
Zoom Inzoom in Zoom Outzoom out
 10 / 16 page
background image
Circuit Description (Continued)
Figure 7 also shows how the contrast control circuit is con-
figured Resistors R23 24 diodes D3 4 and transistor Q13
are used to establish a low impedance zero TC half supply
voltage reference at the base of Q14 The differential ampli-
fier formed by Q15 16 and feedback transistor Q17 along
with resistors R27 28 establish a diferential base voltage
for Q3 and Q4 in
Figure 6 When externally adding or sub-
tracting current from the collector of Q16 a new differential
voltage is generated that reflects the change in the ratio of
currents in Q15 and Q16 To provide voltage control of the
Q16 current resistor R29 is added between the Q16 collec-
tor and pin 12 A capacitor should be added from pin 12 to
ground to prevent noise from the contrast control pot from
entering the IC
Figure 8 is a simplified schematic of the clamp gate and
clamp comparator sections of the LM1203 The clamp gate
circuit consists of a PNP input buffer transistor (Q18) a PNP
emitter coupled pair referenced on one side to 21V (Q19
20) and an output switch (Q21) When the clamp gate input
at pin 14 is high (l15V) the Q21 switch is on and shunts
the I1 850 mA current to ground When pin 14 is low (k13V)
the Q21 switch is off and the I1 850 mA current source is
mirrored or ‘‘turned around’’ by reference diode D5 and Q26
to provide a 850 mA current source for the clamp compara-
tor(s) The inputs to the comparator are similar to the clamp
gate input except that an NPN emitter coupled pair is used
to control the current which will charge or discharge the
clamp capacitors at pins 5 8 or 10 PNP transistors are
used at the inputs because they offer a number of advan-
tages over NPNs PNPs will operate with base voltages at or
near ground and will usually have a greater reverse emitter
base breakdown voltage (BVebo) Because the differential
input voltage to the clamp comparator during the video scan
period could be greater than the BVebo of NPN transistors a
resistor (R34) with a value one half that of R33 or R35 is
connected between the bases of Q23 and Q27 This resis-
tor will limit the maximum differential input to Q24 25 to
approximately 350 mV The clamp comparator common
mode range is from ground to approximately 9V and the
maximum differential input voltage is VCC and ground
TLH9178 – 8
FIGURE 8 Simplified Schematic of LM1203 Clamp Gate and Clamp Comparator Circuits
http
www nationalcom
10


Número de pieza similar - LM1203N

Fabricante ElectrónicoNo. de piezaDatasheetDescripción Electrónicos
logo
Texas Instruments
LM1203-N TI1-LM1203-N Datasheet
810Kb / 18P
[Old version datasheet]   LM1203 RGB Video Amplifier System
logo
National Semiconductor ...
LM1203A NSC-LM1203A Datasheet
305Kb / 18P
   150 MHz RGB Video Amplifier System
logo
Texas Instruments
LM1203A-N TI1-LM1203A-N Datasheet
555Kb / 20P
[Old version datasheet]   LM1203A 150 MHz RGB Video Amplifier System
logo
National Semiconductor ...
LM1203B NSC-LM1203B Datasheet
291Kb / 16P
   100 MHz RGB Video Amplifier System
logo
Texas Instruments
LM1203C TI1-LM1203C Datasheet
509Kb / 7P
[Old version datasheet]   RGB VIDEO-AMPLIFIER SYSTEM
More results

Descripción similar - LM1203N

Fabricante ElectrónicoNo. de piezaDatasheetDescripción Electrónicos
logo
Texas Instruments
LM1203C TI1-LM1203C Datasheet
509Kb / 7P
[Old version datasheet]   RGB VIDEO-AMPLIFIER SYSTEM
LM1203-N TI1-LM1203-N Datasheet
810Kb / 18P
[Old version datasheet]   LM1203 RGB Video Amplifier System
logo
National Semiconductor ...
LM1204 NSC-LM1204 Datasheet
399Kb / 20P
   150 MHz RGB Video Amplifier System
LM1203A NSC-LM1203A Datasheet
305Kb / 18P
   150 MHz RGB Video Amplifier System
logo
NTE Electronics
NTE7081 NTE-NTE7081 Datasheet
25Kb / 3P
   Integrated Circuit RGB Video Amplifier System
logo
TEMIC Semiconductors
U2203B TEMIC-U2203B Datasheet
106Kb / 7P
   RGB Video Amplifier System for Monitors
logo
National Semiconductor ...
LM1203B NSC-LM1203B Datasheet
291Kb / 16P
   100 MHz RGB Video Amplifier System
logo
ADDtek Corp
AMC8213 ADDTEK-AMC8213 Datasheet
206Kb / 9P
   200MHz RGB VIDEO AMPLIFIER SYSTEM WITH OSD
JUNE 2006
logo
Texas Instruments
LM1203A-N TI1-LM1203A-N Datasheet
555Kb / 20P
[Old version datasheet]   LM1203A 150 MHz RGB Video Amplifier System
logo
Mitsumi Electronics, Co...
MM1207 MITSUMI-MM1207 Datasheet
129Kb / 5P
   85MHz RGB Video Amplifier/130MHz RGB Video Amplifier
More results


Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16


Datasheet Descarga

Go To PDF Page


Enlace URL




Política de Privacidad
ALLDATASHEET.ES
¿ALLDATASHEET es útil para Ud.?  [ DONATE ] 

Todo acerca de Alldatasheet   |   Publicidad   |   Contáctenos   |   Política de Privacidad   |   Intercambio de Enlaces   |   Lista de Fabricantes
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com