Moteur de recherche de fiches techniques de composants électroniques
  French  ▼
ALLDATASHEET.FR

X  

LM1818 Fiches technique(PDF) 7 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
No de pièce LM1818
Description  Electronically Switched Audio Tape System
Download  14 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Fabricant  NSC [National Semiconductor (TI)]
Site Internet  http://www.national.com
Logo NSC - National Semiconductor (TI)

LM1818 Fiches technique(HTML) 7 Page - National Semiconductor (TI)

Back Button LM1818 Datasheet HTML 3Page - National Semiconductor (TI) LM1818 Datasheet HTML 4Page - National Semiconductor (TI) LM1818 Datasheet HTML 5Page - National Semiconductor (TI) LM1818 Datasheet HTML 6Page - National Semiconductor (TI) LM1818 Datasheet HTML 7Page - National Semiconductor (TI) LM1818 Datasheet HTML 8Page - National Semiconductor (TI) LM1818 Datasheet HTML 9Page - National Semiconductor (TI) LM1818 Datasheet HTML 10Page - National Semiconductor (TI) LM1818 Datasheet HTML 11Page - National Semiconductor (TI) Next Button
Zoom Inzoom in Zoom Outzoom out
 7 / 14 page
background image
Application Hints (Continued)
MONITOR AND RECORD AMPLIFIERS
(Figure 6)
The monitor and record amplifiers share common input and
feedback connections but have separate outputs During
playback the input signal is amplified and appears only at
the playback monitor output Because the outputs are sepa-
rate different feedback components can be used and as a
result totally different responses can be set The amplifiers
are stable for all closed loop gains above 3 and have an
open loop gain of typically 80 dB The outputs are capable
of supplying a minimum of 400 mA into a load and swing
within 500 mV of either VCC or ground If more than 400 mA
is needed to drive a load an external pull-up resistor on the
output of these amplifiers can increase the load driving ca-
pability
AUTOMATIC LEVEL CONTROLALC
(Figure 7)
The automatic level control provides a constant output level
for a wide range of record source input levels The ALC
works on the varying impedance characteristic of a saturat-
ed transistor The impedance of the saturated transistor
forms a voltage divider with the source impedance of a se-
ries resistor (R1 in
Figure 9 ) The input signal is decreased
as the ALC transistor is increasingly forward biased The
ALC transistor will be forward biased when the preampli-
fiers’s AC output (pin 14) coupled to the combination ALC-
meter drive input (pin 4) reaches 40 mV peak (25 mVrms)
The gain of the ALC loop is such that a preamp input signal
increase of 10 dB will result ina2dB increase on the AC
output of the preamplifier If greater than 25 mVrms is de-
sired at the output of the preamp a series resistor can be
added between the preamp output coupling capacitor and
the ALC input (pin 4) The input impedance of the ALC cir-
cuit is 2 kX therefore ifa2kX series resistor is added
ALC action will begin at 50 mVrms
The ALC memory capacitor connected to pin 6 has the addi-
tional function of amplifier anti-pop control for this reason it
is necessary that a capacitor be connected to pin 6 even if
ALC is not used
Record gain e 1 a
R15
R14
Playback gain e 1 a
R16
R14
TLH7894 – 8
FIGURE 6 Monitor Amplifier
7


Numéro de pièce similaire - LM1818

FabricantNo de pièceFiches techniqueDescription
logo
Seoul Semiconductor
LM181 SEOUL-LM181 Datasheet
376Kb / 14P
   INFRARED LAMP LED
LM181 SEOUL-LM181 Datasheet
360Kb / 13P
   CYAN LAMP LED
LM181 SEOUL-LM181 Datasheet
392Kb / 14P
   RED OVAL LAMP LED
LM181 SEOUL-LM181 Datasheet
392Kb / 14P
   RED OVAL LAMP LED
LM181 SEOUL-LM181 Datasheet
378Kb / 14P
   RED LAMP LED
More results

Description similaire - LM1818

FabricantNo de pièceFiches techniqueDescription
logo
Sanyo Semicon Device
LA4160 SANYO-LA4160 Datasheet
320Kb / 11P
   Single-Chip Tape Recorder Audio System
logo
National Semiconductor ...
LM1863 NSC-LM1863 Datasheet
268Kb / 14P
   AM Radio System for Electronically Tuned Radios
logo
Mechatronics, Inc.
LPH80B99 MECHATRONICS-LPH80B99 Datasheet
608Kb / 1P
   electronically commutated
LPH12A99 MECHATRONICS-LPH12A99 Datasheet
862Kb / 1P
   electronically commutated
LPH80A99 MECHATRONICS-LPH80A99 Datasheet
489Kb / 1P
   electronically commutated
LPH15P99 MECHATRONICS-LPH15P99 Datasheet
531Kb / 1P
   electronically commutated
LPH12A99-5 MECHATRONICS-LPH12A99-5 Datasheet
230Kb / 1P
   electronically commutated
LPH12B99 MECHATRONICS-LPH12B99 Datasheet
506Kb / 1P
   electronically commutated
LPH60B99 MECHATRONICS-LPH60B99 Datasheet
486Kb / 1P
   electronically commutated
logo
IET Labs Inc.
SOURCE IET-SOURCE Datasheet
227Kb / 1P
   Electronically Controlled Resistance Box
More results


Html Pages

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


Fiches technique Télécharger

Go To PDF Page


Lien URL




Politique de confidentialité
ALLDATASHEET.FR
ALLDATASHEET vous a-t-il été utile ?  [ DONATE ] 

À propos de Alldatasheet   |   Publicité   |   Contactez-nous   |   Politique de confidentialité   |   Echange de liens   |   Fabricants
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