поискавой системы для электроныых деталей
  Russian  ▼
ALLDATASHEETRU.COM

X  

AD7322BRU датащи(PDF) 10 Page - ATMEL Corporation

номер детали AD7322BRU
подробное описание детали  Software Selectable True Bipolar Input, 2-Channel, 12-Bit Plus Sign ADC
Download  18 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
производитель  ATMEL [ATMEL Corporation]
домашняя страница  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

AD7322BRU датащи(HTML) 10 Page - ATMEL Corporation

Back Button AD7322BRU Datasheet HTML 6Page - ATMEL Corporation AD7322BRU Datasheet HTML 7Page - ATMEL Corporation AD7322BRU Datasheet HTML 8Page - ATMEL Corporation AD7322BRU Datasheet HTML 9Page - ATMEL Corporation AD7322BRU Datasheet HTML 10Page - ATMEL Corporation AD7322BRU Datasheet HTML 11Page - ATMEL Corporation AD7322BRU Datasheet HTML 12Page - ATMEL Corporation AD7322BRU Datasheet HTML 13Page - ATMEL Corporation AD7322BRU Datasheet HTML 14Page - ATMEL Corporation Next Button
Zoom Inzoom in Zoom Outzoom out
 10 / 18 page
background image
AD7322
Preliminary Technical Data
When the ADC starts a conversion (
), SW2 will open
and SW1 will move to position B, causing the comparator to
become unbalanced. The control logic and the charge
redistribution DAC is used to add and subtract fixed amounts
of charge from the sampling capacitor arrays to bring the
comparator back into a balanced condition. When the
comparator is rebalanced, the conversion is complete. The
Control Logic generates the ADC output code.
Figure 5
Figure 5. ADC Conversion Phase(Single Ended)
Vin0
AGND
CONTROL
LOGIC
CAPACITIVE
DAC
SW2
SW1
CS
A
B
COMPARATOR
Figure 6
Figure 6. ADC Differential Configuration during Acquisition Phase
Vin+
VREF
CONTROL
LOGIC
CAPACITIVE
DAC
SW3
SW1
CS
A
B
COMPARATOR
CAPACITIVE
DAC
SW2
CS
A
B
Vin-
shows the differential configuration during the
Acquisition phase. For the Conversion Phase, SW3 will open,
SW1 and SW2 will move to position B, see
. The output
impedances of the source driving the Vin+ and Vin- pins must
be matched; otherwise the two inputs will have different settling
times, resulting in errors.
Figure 7
Figure 7. ADC Differential Configuration during Conversion Phase
Vin+
VREF
CONTROL
LOGIC
CAPACITIVE
DAC
SW3
SW1
CS
A
B
COMPARATOR
CAPACITIVE
DAC
SW2
CS
A
B
Vin-
Output Coding
The AD7322 default output coding is set to two’s complement.
The output coding is controlled by the Coding bit in the
Control Register. To change the output coding to Straight
Binary Coding the Coding bit in the Control Register must be
set. When operating in Sequence mode the output coding for
each channel in the sequence will be the value written to the
coding bit during the last write to the Control Register.
Transfer Functions
The designed code transitions occur at successive integer LSB
values (i.e., 1 LSB, 2 LSB, and so on). The LSB size is dependant
on the Analog input Range selected.
Table 6. LSB sizes for each Analog Input Range
Input Range
Full Scale Range/4096
LSB Size
±10V
20V/4096
4.882 mV
±5V
10V/4096
2.441 mV
±2.5V
5V/4096
1.22 mV
0 to 10V
10V/4096
2.441 mV
The ideal transfer characteristic for the AD7322 when Twos
Complement coding is selected is shown in
, and the
ideal transfer characteristic for the AD7322 when Straight
Binary coding is selected is shown in
.
Figure 8
Figure 8. Twos Complement Transfer Characteristic (Bipolar Ranges)
Figure 9
Figure 9. Straight Binary Transfer Characteristic (Bipolar Ranges)
000...000
-FSR/2 + 1LSB
ANALOG INPUT
011...111
100...001
100...010
011...110
000...001
111...111
+FSR/2 - 1LSB
100...000
VREF - 1LSB
000...000
-FSR/2
ANALOG INPUT
111...111
000...001
000...010
111...110
111...000
011...111
1LSB
FSR/2 -1LSB
ANALOG INPUT
The analog inputs of the AD7322 may be configured as Single-
Ended, True differential or Pseudo Differential via the Control
Register Mode Bits as shown in
of the Register Section.
The AD7322 can accept True bipolar input signals. On power
up the Analog inputs will operate as 2 Single-Ended Analog
Input Channels. If True Differential or Pseudo Differential is
required, a write to the Control register is necessary to change
this configuration after power up.
Table 9
Figure 10 shows the equivalent Analog input circuit of the
AD7322 in Single-Ended Mode.
shows the equivalent
Analog input structure in Differential mode. The Two Diodes
provide ESD protection for the Analog Inputs.
Figure 11
Rev. PrE | Page 10 of 18


Аналогичный номер детали - AD7322BRU

производительномер деталидатащиподробное описание детали
logo
Analog Devices
AD7322BRUZ AD-AD7322BRUZ Datasheet
592Kb / 36P
   2-Channel, Software-Selectable, True Bipolar Input, 1 MSPS, 12-Bit Plus Sign ADC
REV. A
AD7322BRUZ AD-AD7322BRUZ Datasheet
725Kb / 37P
   2-Channel, Software-Selectable, True Bipolar Input, 1 MSPS, 12-Bit Plus Sign ADC
AD7322BRUZ-REEL AD-AD7322BRUZ-REEL Datasheet
592Kb / 36P
   2-Channel, Software-Selectable, True Bipolar Input, 1 MSPS, 12-Bit Plus Sign ADC
REV. A
AD7322BRUZ-REEL AD-AD7322BRUZ-REEL Datasheet
725Kb / 37P
   2-Channel, Software-Selectable, True Bipolar Input, 1 MSPS, 12-Bit Plus Sign ADC
AD7322BRUZ-REEL7 AD-AD7322BRUZ-REEL7 Datasheet
592Kb / 36P
   2-Channel, Software-Selectable, True Bipolar Input, 1 MSPS, 12-Bit Plus Sign ADC
REV. A
More results

Аналогичное описание - AD7322BRU

производительномер деталидатащиподробное описание детали
logo
Analog Devices
AD7321 AD-AD7321_17 Datasheet
697Kb / 37P
   2-Channel, Software-Selectable, True Bipolar Input, 12-Bit Plus Sign ADC
AD7328 AD-AD7328_17 Datasheet
761Kb / 37P
   8-Channel, Software-Selectable, True Bipolar Input, 12-Bit Plus Sign ADC
AD7324 AD-AD7324 Datasheet
591Kb / 36P
   4-Channel, Software-Selectable, True Bipolar Input, 12-Bit Plus Sign ADC
REV. 0
AD7324 AD-AD7324_15 Datasheet
920Kb / 37P
   4-Channel, Software-Selectable, True Bipolar Input, 12-Bit Plus Sign ADC
REV. B
AD7324 AD-AD7324_17 Datasheet
734Kb / 37P
   4-Channel, Software-Selectable, True Bipolar Input, 12-Bit Plus Sign ADC
AD7327 AD-AD7327_17 Datasheet
764Kb / 37P
   8-Channel, Software-Selectable, True Bipolar Input, 12-Bit Plus Sign ADC
AD7328 AD-AD7328 Datasheet
880Kb / 36P
   8-Channel, Software-Selectable True Bipolar Input, 12-Bit Plus Sign ADC
REV. A
AD7328 AD-AD7328_15 Datasheet
953Kb / 37P
   8-Channel, Software-Selectable, True Bipolar Input, 12-Bit Plus Sign ADC
REV. C
AD7323 AD-AD7323_17 Datasheet
686Kb / 37P
   4-Channel, Software-Selectable, True Bipolar Input, 12-Bit Plus Sign ADC
AD7321 AD-AD7321_15 Datasheet
886Kb / 37P
   500 kSPS, 2-Channel, Software-Selectable, True Bipolar Input, 12-Bit Plus Sign ADC
REV. B
More results


Html Pages

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


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