công cụ tìm kiếm bảng dữ liệu linh kiện điện tử
  Vietnamese  ▼
ALLDATASHEET.VN

X  

ADS7822EB/250 bảng dữ liệu(PDF) 11 Page - Texas Instruments

Click here to check the latest version.
tên linh kiện ADS7822EB/250
Giải thích chi tiết về linh kiện  ANALOG-TO-DIGITAL CONVERTER
Download  28 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
nhà sản xuất  TI1 [Texas Instruments]
Trang chủ  http://www.ti.com
Logo TI1 - Texas Instruments

ADS7822EB/250 bảng dữ liệu(HTML) 11 Page - Texas Instruments

Back Button ADS7822EB/250 Datasheet HTML 7Page - Texas Instruments ADS7822EB/250 Datasheet HTML 8Page - Texas Instruments ADS7822EB/250 Datasheet HTML 9Page - Texas Instruments ADS7822EB/250 Datasheet HTML 10Page - Texas Instruments ADS7822EB/250 Datasheet HTML 11Page - Texas Instruments ADS7822EB/250 Datasheet HTML 12Page - Texas Instruments ADS7822EB/250 Datasheet HTML 13Page - Texas Instruments ADS7822EB/250 Datasheet HTML 14Page - Texas Instruments ADS7822EB/250 Datasheet HTML 15Page - Texas Instruments Next Button
Zoom Inzoom in Zoom Outzoom out
 11 / 28 page
background image
www.ti.com
DIGITAL INTERFACE
Signal Levels
Serial Interface
CS/SHDN
D
OUT
DCLOCK
t
DATA
t
SUCS
t
CYC
t
CONV
Power
Down
t
SMPL
Note:(1)Aftercompletingthedatatransfer,iffurtherclocksareappliedwith CS LOW,
theA/DwilloutputLSB-Firstdatathenfollowedwithzeroesindefinitely.
B11
(MSB)
B10 B9
B8
B7
B6
B5
B4
B3
B2
B1 B0
(1)
Null
Bit
Hi-Z
Hi-Z
B11 B10
B9
B8
Null
Bit
CS/SHDN
D
OUT
DCLOCK
t
CONV
t
DATA
t
SUCS
t
CSD
t
CYC
PowerDown
t
SMPL
Note:(1)Aftercompletingthedatatransfer,iffurtherclocksareappliedwith CS LOW,
theA/Dwilloutputzeroesindefinitely.
t
enceinput
:Duringthistime,thebiascurrentandthecomparatorpowerdownandtherefer
DATA
becomesahighimpedancenode,leavingtheCLKrunningtoclockoutLSB-firstdataorzeroes.
B11
(MSB)
B10 B9
B8
B7
B6
B5
B4
B4
B3
B3
B2
B2
B1
B1
B0
Null
Bit
Hi-Z
Hi-Z
B5
B6
B7
B8
B9
B10 B11
(1)
t
CSD
ADS7822
SBAS062C – JANUARY 1996 – REVISED AUGUST 2007
The noise inherent in the converter will also appear to
increase with lower LSB size. With a 2.5V reference,
the internal noise of the converter typically contributes
only 0.32 LSB peak-to-peak of potential error to the
The digital inputs of the ADS7822 can accommodate
output code. When the external reference is 50mV,
logic levels up to 6V regardless of the value of VCC.
the potential error contribution from the internal noise
Thus, the ADS7822 can be powered at 3V and still
will be 50 times larger—16 LSBs. The errors due to
accept inputs from logic powered at 5V.
the internal noise are gaussian in nature and can be
reduced by averaging consecutive conversion results.
The CMOS digital output (DOUT) will swing 0V to VCC.
If VCC is 3V and this output is connected to a 5V
For more information regarding noise, consult the
CMOS logic input, then that IC may require more
typical characteristic curves Effective Number of Bits
supply current than normal and may have a slightly
vs Reference Voltage and Peak-to-Peak Noise vs
longer propagation delay.
Reference Voltage. Note that the effective number of
bits (ENOB) figure is calculated based on the
converter signal-to-(noise + distortion) ratio with a
1kHz, 0dB input signal. SINAD is related to ENOB as
The ADS7822 communicates with microprocessors
follows:
and other digital systems via a synchronous 3-wire
serial interface, as shown in Figure 22 and Table 1.
SINAD = 6.02 • ENOB + 1.76
The DCLOCK signal synchronizes the data transfer
With lower reference voltages, extra care should be
with each bit being transmitted on the falling edge of
taken to provide a clean layout including adequate
DCLOCK. Most receiving systems will capture the
bypassing,
a
clean
power
supply,
a
low-noise
bitstream on the rising edge of DCLOCK. However, if
reference, and a low-noise input signal. Because the
the minimum hold time for DOUT is acceptable, the
LSB size is lower, the converter will also be more
system can use the falling edge of DCLOCK to
sensitive to external sources of error such as nearby
capture each bit.
digital signals and electromagnetic interference.
Figure 22. Basic Timing Diagrams
Copyright © 1996–2007, Texas Instruments Incorporated
Submit Documentation Feedback
11
Product Folder Link(s): ADS7822


Số phần tương tự - ADS7822EB/250

nhà sản xuấttên linh kiệnbảng dữ liệuGiải thích chi tiết về linh kiện
logo
Texas Instruments
ADS7822EB/250 TI-ADS7822EB/250 Datasheet
431Kb / 20P
[Old version datasheet]   12-Bit, High-Speed, 2.7V microPower Sampling ANALOG-TO-DIGITAL CONVERTER
ADS7822EB/250G4 TI-ADS7822EB/250G4 Datasheet
431Kb / 20P
[Old version datasheet]   12-Bit, High-Speed, 2.7V microPower Sampling ANALOG-TO-DIGITAL CONVERTER
More results

Mô tả tương tự - ADS7822EB/250

nhà sản xuấttên linh kiệnbảng dữ liệuGiải thích chi tiết về linh kiện
logo
Texas Instruments
TL505C TI-TL505C Datasheet
316Kb / 7P
[Old version datasheet]   ANALOG-TO-DIGITAL CONVERTER
ADS820 TI1-ADS820_13 Datasheet
409Kb / 20P
[Old version datasheet]   ANALOG-TO-DIGITAL CONVERTER
PCM2702 TI1-PCM2702_09 Datasheet
427Kb / 17P
[Old version datasheet]   DIGITAL-TO-ANALOG CONVERTER
PCM4201 TI1-PCM4201_16 Datasheet
847Kb / 26P
[Old version datasheet]   Analog-to-Digital Converter
PCM4204 TI1-PCM4204_16 Datasheet
1Mb / 38P
[Old version datasheet]   Analog-to-Digital Converter
ADS7821 TI1-ADS7821 Datasheet
201Kb / 11P
[Old version datasheet]   ANALOG-to-DIGITAL CONVERTER
ADS7805 TI1-ADS7805 Datasheet
949Kb / 20P
[Old version datasheet]   ANALOG-to-DIGITAL CONVERTER
ADS7809 TI1-ADS7809 Datasheet
1Mb / 20P
[Old version datasheet]   ANALOG-TO-DIGITAL CONVERTER
PCM1741 TI1-PCM1741_08 Datasheet
496Kb / 24P
[Old version datasheet]   DIGITAL-TO-ANALOG CONVERTER
PCM1718E TI1-PCM1718E_15 Datasheet
347Kb / 14P
[Old version datasheet]   DIGITAL-TO-ANALOG CONVERTER
PCM1728 TI1-PCM1728_15 Datasheet
328Kb / 16P
[Old version datasheet]   DIGITAL-TO-ANALOG CONVERTER
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 23 24 25 26 27 28


bảng dữ liệu tải về

Go To PDF Page


Link URL




Chính sách bảo mật
ALLDATASHEET.VN
Cho đến nay ALLDATASHEET có giúp ích cho doanh nghiệp của bạn hay không?  [ DONATE ] 

Alldatasheet là   |   Quảng cáo   |   Liên lạc với chúng tôi   |   Chính sách bảo mật   |   Trao đổi link   |   Tìm kiếm theo nhà sản xuất
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