поискавой системы для электроныых деталей
  Russian  ▼
ALLDATASHEETRU.COM

X  

ADC0820CIWM датащи(PDF) 9 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
номер детали ADC0820CIWM
подробное описание детали  8-Bit High Speed 關P Compatible A/D Converter with Track/Hold Function
Download  22 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
производитель  NSC [National Semiconductor (TI)]
домашняя страница  http://www.national.com
Logo NSC - National Semiconductor (TI)

ADC0820CIWM датащи(HTML) 9 Page - National Semiconductor (TI)

Back Button ADC0820CIWM Datasheet HTML 5Page - National Semiconductor (TI) ADC0820CIWM Datasheet HTML 6Page - National Semiconductor (TI) ADC0820CIWM Datasheet HTML 7Page - National Semiconductor (TI) ADC0820CIWM Datasheet HTML 8Page - National Semiconductor (TI) ADC0820CIWM Datasheet HTML 9Page - National Semiconductor (TI) ADC0820CIWM Datasheet HTML 10Page - National Semiconductor (TI) ADC0820CIWM Datasheet HTML 11Page - National Semiconductor (TI) ADC0820CIWM Datasheet HTML 12Page - National Semiconductor (TI) ADC0820CIWM Datasheet HTML 13Page - National Semiconductor (TI) Next Button
Zoom Inzoom in Zoom Outzoom out
 9 / 22 page
background image
Description of Pin Functions
Pin
Name
Function
1V
IN
Analog input; range =GND
≤V
IN≤VCC
2
DB0
TRI-STATE data output — bit 0 (LSB)
3
DB1
TRI-STATE data output — bit 1
4
DB2
TRI-STATE data output — bit 2
5
DB3
TRI-STATE data output — bit 3
6WR
/RDY
WR-RD Mode
WR: With CS low, the conversion is
started on the falling edge of WR.
Approximately 800 ns (the preset internal
time out, t
I) after the WR rising edge, the
result of the conversion will be strobed
into the output latch, provided that RD
does not occur prior to this time out (see
Figures 3, 4 ).
RD Mode
RDY: This is an open drain output (no
internal pull-up device). RDY will go low
after the falling edge of CS; RDY will go
TRI-STATE when the result of the
conversion is strobed into the output
latch. It is used to simplify the interface
to a microprocessor system (see
Figure
2 ).
7
Mode
Mode: Mode selection input — it is
internally tied to GND through a 50 µA
current source.
RD Mode: When mode is low
WR-RD Mode: When mode is high
8RD
WR-RD Mode
With CS low, the TRI-STATE data
outputs (DB0-DB7) will be activated
when RD goes low (see
Figure 5 ). RD
can also be used to increase the speed
of the converter by reading data prior to
the preset internal time out (t
I, z800 ns).
If this is done, the data result transferred
to output latch is latched after the falling
edge of the RD (see
Figures 3, 4 ).
RD Mode
With CS low, the conversion will start
with RD going low, also RD will enable
the TRI-STATE data outputs at the
completion of the conversion. RDY going
TRI-STATE and INT going low indicates
the completion of the conversion (see
Figure 2 ).
Pin
Name
Function
9
INT
WR-RD Mode
INT going low indicates that the
conversion is completed and the data
result is in the output latch. INT will go
low, z800 ns (the preset internal time
out, t
I) after the rising edge of WR (see
Figure 4 ); or INT will go low after the
falling edge of RD , if RD goes low prior
to the 800 ns time out (see
Figure 3).
INT is reset by the rising edge of RD or
CS (see
Figures 3, 4 ).
RD Mode
INT going low indicates that the
conversion is completed and the data
result is in the output latch. INT is reset
by the rising edge of RD or CS (see
Figure 2 ).
10
GND
Ground
11
V
REF(−)
The bottom of resistor ladder, voltage
range: GND
≤V
REF(−)≤VREF(+) (Note 5)
12
V
REF(+)
The top of resistor ladder, voltage range:
V
REF(−)≤VREF(+)≤VCC (Note 5)
13
CS
CS must be low in order for the RD or
WR to be recognized by the converter.
14
DB4
TRI-STATE data output — bit 4
15
DB5
TRI-STATE data output — bit 5
16
DB6
TRI-STATE data output — bit 6
17
DB7
TRI-STATE data output — bit 7 (MSB)
18
OFL
Overflow output — If the analog input is
higher than the V
REF(+), OFL will be low
at the end of conversion. It can be used
to cascade 2 or more devices to have
more resolution (9, 10-bit). This output is
always active and does not go into
TRI-STATE as DB0–DB7 do.
19
NC
No connection
20
V
CC
Power supply voltage
1.0 Functional Description
1.1 GENERAL OPERATION
The ADC0820 uses two 4-bit flash A/D converters to make
an 8-bit measurement (
Figure 1 ). Each flash ADC is made
up of 15 comparators which compare the unknown input to a
reference ladder to get a 4-bit result. To take a full 8-bit read-
ing, one flash conversion is done to provide the 4 most sig-
nificant data bits (via the MS flash ADC). Driven by the 4
MSBs, an internal DAC recreates an analog approximation
of the input voltage. This analog signal is then subtracted
from the input, and the difference voltage is converted by a
second 4-bit flash ADC (the LS ADC), providing the 4 least
significant bits of the output data word.
The internal DAC is actually a subsection of the MS flash
converter. This is accomplished by using the same resistor
www.national.com
9


Аналогичный номер детали - ADC0820CIWM

производительномер деталидатащиподробное описание детали
logo
Maxim Integrated Produc...
ADC0820CC/D MAXIM-ADC0820CC/D Datasheet
261Kb / 6P
   CMOS High Speed 8-Bit A/D Converter with Track/Hold Function
19-0889; Rev 1; 7/96
ADC0820CCJ MAXIM-ADC0820CCJ Datasheet
261Kb / 6P
   CMOS High Speed 8-Bit A/D Converter with Track/Hold Function
19-0889; Rev 1; 7/96
ADC0820CCM MAXIM-ADC0820CCM Datasheet
261Kb / 6P
   CMOS High Speed 8-Bit A/D Converter with Track/Hold Function
19-0889; Rev 1; 7/96
ADC0820CCN MAXIM-ADC0820CCN Datasheet
261Kb / 6P
   CMOS High Speed 8-Bit A/D Converter with Track/Hold Function
19-0889; Rev 1; 7/96
logo
Texas Instruments
ADC0820CCN/NOPB TI1-ADC0820CCN/NOPB Datasheet
1Mb / 29P
[Old version datasheet]    8-Bit High Speed 關P Compatible A/D Converter with Track/Hold Function
More results

Аналогичное описание - ADC0820CIWM

производительномер деталидатащиподробное описание детали
logo
Texas Instruments
ADC0820-N TI1-ADC0820-N_14 Datasheet
1Mb / 29P
[Old version datasheet]    8-Bit High Speed 關P Compatible A/D Converter with Track/Hold Function
ADC0820-N TI1-ADC0820-N Datasheet
604Kb / 25P
[Old version datasheet]   ADC0820 8-Bit High Speed 關P Compatible A/D Converter with Track/Hold Function
logo
National Semiconductor ...
ADC1061 NSC-ADC1061 Datasheet
320Kb / 11P
   10-Bit High-Speed 關P-Compatible A/D Converter with Track/Hold Function
logo
NXP Semiconductors
ADC0820 PHILIPS-ADC0820 Datasheet
107Kb / 14P
   8-Bit, high-speed, mP-compatible A/D converter with track/hold function
August 31, 1994
logo
Maxim Integrated Produc...
ADC0820 MAXIM-ADC0820 Datasheet
261Kb / 6P
   CMOS High Speed 8-Bit A/D Converter with Track/Hold Function
19-0889; Rev 1; 7/96
logo
Analog Devices
AD7821KPZ AD-AD7821KPZ Datasheet
816Kb / 16P
   LC2MOS High Speed, P Compatible 8-Bit ADC with Track/Hold Function
REV. B
AD7821 AD-AD7821_15 Datasheet
816Kb / 16P
   LC MOS High Speed, P Compatible 8-Bit ADC with Track/Hold Function
REV. B
AD7820 AD-AD7820_15 Datasheet
612Kb / 12P
   LC MOS High Speed P Compatible 8 Bit ADC with Track Hold Function
REV. A
AD7820KNZ AD-AD7820KNZ Datasheet
475Kb / 12P
   LC2MOS High Speed UP-Compatible 8-Bit ADC with Track/Hold Function
REV. A
AD7820 AD-AD7820 Datasheet
609Kb / 12P
   LC2MOS HIGH-SPEED uP-COMPATIBLE 8-BIT ADC WITH TRACK/HOLD FUNCTION
REV. A
More results


Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22


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