Moteur de recherche de fiches techniques de composants électroniques
Selected language     French  ▼

Delete All


Preview PDF Download HTML

LM1973 Datasheet(Fiches technique) 5 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
Numéro de pièce LM1973
Description  μPot™3-Channel 76dB Audio Attenuator with Mute
Télécharger  11 Pages
Scroll/Zoom Zoom In 100% Zoom Out
Fabricant  NSC [National Semiconductor (TI)]
Site Internet

LM1973 Datasheet(HTML) 5 Page - National Semiconductor (TI)

Zoom Inzoom in Zoom Outzoom out
 5 / 11 page
background image
Typical Performance Characteristics (Continued)
Application Information
The fundamental attenuation step scheme for the LM1973
µPot is shown in
Figure 3. This attenuation step scheme,
however, can be changed through programming techniques
to fit different application requirements. One such example
would be a constant logarithmic attenuation scheme of 2dB
steps for a panning function as shown in
Figure 5. The only
restriction to the customization of attenuation schemes are
the given attenuation levels and their corresponding data
bits shown in
Table 1. The device will change attenuation
levels only when a channel address is recognized. When
recognized, the attenuation level will be changed corre-
sponding to the data bits shown in
Table 1. As shown in Fig-
ure 6, an LM1973 can be configured with a mono audio sig-
nal level control and with a panning control which separates
the mono signal into left and right channels. This circuit may
utilize the fundamental attenuation scheme of the LM1973
for the level control, but also possess a constant 2dB pan-
ning control for the left and right channels as stated earlier.
THD+Nvs Amplitude
f = 20 Hz, V
DD = ±6V
IN into CH1 @ 0dB
THD+Nvs Amplitude
f = 1 kHz, V
DD = ±6V
IN into CH1 @ 0dB
THD+Nvs Amplitude
f = 20 kHz, V
DD = ±6V
IN into CH1 @ 0dB
LM1973 Channel Attenuation
vs Digital Step Value
FIGURE 3. LM1973 Attenuation Step Scheme
LM1973 Channel Attenuation
vs Digital Step Value
(Programmed 1.0dB Steps)
FIGURE 4. LM1973 1.0dB and 2.0dB
Attenuation Step Scheme

Html Pages

1  2  3  4  5  6  7  8  9  10  11 

Datasheet Download

Lien URL

Privacy Policy
AllDATASHEET vous a-t-il été utile ?   [ DONATE ]  

À propos de Alldatasheet   |   Publicit   |   Contactez-nous   |   Politique de confidentialit   |   Echange de liens   |   Manufacturer List
All Rights Reserved©

Mirror Sites
English :  |   English :  |   Chinese :  |   German :  |   Japanese :
Russian :  |   Korean :  |   Spanish :  |   French :  |   Italian :
Portuguese :  |   Polish :  |   Vietnamese :