поискавой системы для электроныых деталей
  Russian  ▼
ALLDATASHEETRU.COM

X  

ADC0808 датащи(PDF) 9 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
номер детали ADC0808
подробное описание детали  8-Bit uP Compatible A/D Converters with 8-Channel Multiplexer
Download  14 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
производитель  NSC [National Semiconductor (TI)]
домашняя страница  http://www.national.com
Logo NSC - National Semiconductor (TI)

ADC0808 датащи(HTML) 9 Page - National Semiconductor (TI)

Back Button ADC0808 Datasheet HTML 5Page - National Semiconductor (TI) ADC0808 Datasheet HTML 6Page - National Semiconductor (TI) ADC0808 Datasheet HTML 7Page - National Semiconductor (TI) ADC0808 Datasheet HTML 8Page - National Semiconductor (TI) ADC0808 Datasheet HTML 9Page - National Semiconductor (TI) ADC0808 Datasheet HTML 10Page - National Semiconductor (TI) ADC0808 Datasheet HTML 11Page - National Semiconductor (TI) ADC0808 Datasheet HTML 12Page - National Semiconductor (TI) ADC0808 Datasheet HTML 13Page - National Semiconductor (TI) Next Button
Zoom Inzoom in Zoom Outzoom out
 9 / 14 page
background image
Applications Information (Continued)
tem reference must be used which relates the full-scale volt-
age to the standard volt. For example, if V
CC=VREF=5.12V,
then the full-scale range is divided into 256 standard steps.
The smallest standard step is 1 LSB which is then 20 mV.
2.0 RESISTOR LADDER LIMITATIONS
The voltages from the resistor ladder are compared to the
selected into 8 times in a conversion. These voltages are
coupled to the comparator via an analog switch tree which is
referenced to the supply. The voltages at the top, center and
bottom of the ladder must be controlled to maintain proper
operation.
The top of the ladder, Ref(+), should not be more positive
than the supply, and the bottom of the ladder, Ref(−), should
not be more negative than ground. The center of the ladder
voltage must also be near the center of the supply because
the analog switch tree changes from N-channel switches to
P-channel switches. These limitations are automatically sat-
isfied in ratiometric systems and can be easily met in ground
referenced systems.
Figure 10 shows a ground referenced system with a sepa-
rate supply and reference. In this system, the supply must be
trimmed to match the reference voltage. For instance, if a
5.12V is used, the supply should be adjusted to the same
voltage within 0.1V.
The ADC0808 needs less than a milliamp of supply current
so developing the supply from the reference is readily ac-
complished. In
Figure 11 a ground referenced system is
shown which generates the supply from the reference. The
buffer shown can be an op amp of sufficient drive to supply
the milliamp of supply current and the desired bus drive, or if
a capacitive bus is driven by the outputs a large capacitor will
supply the transient supply current as seen in
Figure 12. The
LM301 is overcompensated to insure stability when loaded
by the 10 µF output capacitor.
The top and bottom ladder voltages cannot exceed V
CC and
ground, respectively, but they can be symmetrically less than
V
CC and greater than ground. The center of the ladder volt-
age should always be near the center of the supply. The sen-
sitivity of the converter can be increased, (i.e., size of the
LSB steps decreased) by using a symmetrical reference sys-
tem. In
Figure 13, a 2.5V reference is symmetrically cen-
tered about V
CC/2 since the same current flows in identical
resistors. This system with a 2.5V reference allows the LSB
bit to be half the size of a 5V reference system.
DS005672-7
FIGURE 9. Ratiometric Conversion System
www.national.com
9


Аналогичный номер детали - ADC0808

производительномер деталидатащиподробное описание детали
logo
Texas Instruments
ADC0808 TI-ADC0808 Datasheet
345Kb / 6P
[Old version datasheet]   CMOS ANALOG-TO-DIGITAL CONVERTERS WITH 8-CHANNEL MULTIPLEXERS
logo
National Semiconductor ...
ADC0808 NSC-ADC0808 Datasheet
394Kb / 16P
   8-Bit uP Compatible A/D Converters with 8-Channel Multiplexer
ADC0808 NSC-ADC0808 Datasheet
348Kb / 14P
   8-Bit uP Compatible A/D Converters with 8-Channel Multiplexer
logo
Texas Instruments
ADC0808 TI1-ADC0808 Datasheet
533Kb / 19P
[Old version datasheet]   8-Bit Compatible A/D Converters with 8-Channel Multiplexer
ADC0808-N TI1-ADC0808-N Datasheet
353Kb / 18P
[Old version datasheet]   ADC0808/ADC0809 8-Bit P Compatible A/D Converters with 8-Channel
More results

Аналогичное описание - ADC0808

производительномер деталидатащиподробное описание детали
logo
National Semiconductor ...
ADC0808 NSC-ADC0808_07 Datasheet
394Kb / 16P
   8-Bit uP Compatible A/D Converters with 8-Channel Multiplexer
ADC0808 NSC-ADC0808_95 Datasheet
348Kb / 14P
   8-Bit uP Compatible A/D Converters with 8-Channel Multiplexer
logo
Texas Instruments
ADC0808-N TI1-ADC0808-N_17 Datasheet
533Kb / 19P
[Old version datasheet]   8-Bit Compatible A/D Converters with 8-Channel Multiplexer
logo
National Semiconductor ...
ADC0816 NSC-ADC0816 Datasheet
245Kb / 13P
   8-Bit uP Compatible A/D Converters with 16-Channel Multiplexer
ADC0844 NSC-ADC0844 Datasheet
467Kb / 20P
   8-Bit uP Compatible A/D Converters with Multiplexer Options
logo
Texas Instruments
ADC0816 TI1-ADC0816_17 Datasheet
539Kb / 18P
[Old version datasheet]   8-Bit Compatible A/D Converters with16-Channel Multiplexer
logo
National Semiconductor ...
ADC080X NSC-ADC080X Datasheet
2Mb / 3P
   8 BIT UP COMPATIBLE A/D CONVERTERS
ADC0801 NSC-ADC0801 Datasheet
1Mb / 41P
   8-Bit uP Compatible A/D Converters
logo
Texas Instruments
ADC0809CCN TI1-ADC0809CCN Datasheet
494Kb / 19P
[Old version datasheet]   ADC0808/ADC0809 8-Bit 關P Compatible A/D Converters with 8-Channel Multiplexer
logo
Micro Linear Corporatio...
ML2252 MICRO-LINEAR-ML2252 Datasheet
202Kb / 13P
   關P Compatible 8-Bit A/D Converters with 2- or 8-Channel Multiplexer
More results


Html Pages

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


датащи скачать

Go To PDF Page


ссылки URL




Конфиденциальность
ALLDATASHEETRU.COM
Вашему бизинису помогли Аллдатащит?  [ DONATE ] 

Что такое Аллдатащит   |   реклама   |   контакт   |   Конфиденциальность   |   обмен ссыками   |   поиск по производителю
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