Motor de Búsqueda de Datasheet de Componentes Electrónicos
  Spanish  ▼
ALLDATASHEET.ES

X  

ADS1100A0IDBVR Datasheet(PDF) 7 Page - Texas Instruments

Click here to check the latest version.
No. de pieza ADS1100A0IDBVR
Descripción Electrónicos  Self-Calibrating, 16-Bit ANALOG-TO-DIGITAL CONVERTER
Download  23 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Fabricante Electrónico  TI1 [Texas Instruments]
Página de inicio  http://www.ti.com
Logo TI1 - Texas Instruments

ADS1100A0IDBVR Datasheet(HTML) 7 Page - Texas Instruments

Back Button ADS1100A0IDBVR Datasheet HTML 3Page - Texas Instruments ADS1100A0IDBVR Datasheet HTML 4Page - Texas Instruments ADS1100A0IDBVR Datasheet HTML 5Page - Texas Instruments ADS1100A0IDBVR Datasheet HTML 6Page - Texas Instruments ADS1100A0IDBVR Datasheet HTML 7Page - Texas Instruments ADS1100A0IDBVR Datasheet HTML 8Page - Texas Instruments ADS1100A0IDBVR Datasheet HTML 9Page - Texas Instruments ADS1100A0IDBVR Datasheet HTML 10Page - Texas Instruments ADS1100A0IDBVR Datasheet HTML 11Page - Texas Instruments Next Button
Zoom Inzoom in Zoom Outzoom out
 7 / 23 page
background image
ADS1100
7
SBAS239B
www.ti.com
CLOCK GENERATOR
The ADS1100 features an onboard clock generator, which
drives the operation of the modulator and digital filter. The
Typical Characteristics show varieties in data rate over
supply voltage and temperature.
It is not possible to operate the ADS1100 with an external
modulator clock.
INPUT IMPEDANCE
The ADS1100 uses a switched-capacitor input stage. To
external circuitry, it looks roughly like a resistance. The
resistance value depends on the capacitor values and the
rate at which they are switched. The switching frequency is
the same as the modulator frequency; the capacitor values
depend on the PGA setting. The switching clock is generated
by the onboard clock generator, so its frequency, nominally
275kHz, is dependent on supply voltage and temperature.
The common-mode and differential input impedances are
different. For a gain setting of PGA, the differential input
impedance is typically:
2.4M
Ω/PGA
The common-mode impedance is typically 8M
Ω.
The typical value of the input impedance often cannot be
neglected. Unless the input source has a low impedance, the
ADS1100’s input impedance may affect the measurement accu-
racy. For sources with high output impedance, buffering may be
necessary. Bear in mind, however, that active buffers introduce
noise, and also introduce offset and gain errors. All of these
factors should be considered in high-accuracy applications.
Because the clock generator frequency drifts slightly with
temperature, the input impedances will also drift. For many
applications, this input impedance drift can be neglected, and
the typical impedance values above can be used.
ALIASING
If frequencies are input to the ADS1100 that exceed half the
data rate, aliasing will occur. To prevent aliasing, the input
signal must be bandlimited. Some signals are inherently
bandlimited. For example, a thermocouple’s output, which
has a limited rate of change, may nevertheless contain noise
and interference components. These can fold back into the
sampling band just as any other signal can.
The ADS1100’s digital filter provides some attenuation of
high-frequency noise, but the filter’s sinc1 frequency re-
sponse cannot completely replace an anti-aliasing filter;
some external filtering may still be needed. For many appli-
cations, a simple RC filter will suffice.
DATA RATE
NEGATIVE FULL-SCALE
–1LSB
ZERO
+1LSB
POSITIVE FULL-SCALE
8SPS
8000H
FFFFH
0000H
0001H
7FFFH
16SPS
C000H
FFFFH
0000H
0001H
3FFFH
32SPS
E000H
FFFFH
0000H
0001H
1FFFH
128SPS
F800H
FFFFH
0000H
0001H
07FFH
TABLE II. Output Codes for Different Input Signals.
INPUT SIGNAL
When designing an input filter circuit, remember to take into
account the interaction between the filter network and the
input impedance of the ADS1100.
USING THE ADS1100
OPERATING MODES
The ADS1100 operates in one of two modes: continuous
conversion and single conversion.
In continuous conversion mode, the ADS1100 continuously
performs conversions. Once a conversion has been com-
pleted, the ADS1100 places the result in the output register,
and immediately begins another conversion. When the
ADS1100 is in continuous conversion mode, the ST/BSY bit
in the configuration register always reads 1.
In single conversion mode, the ADS1100 waits until the
ST/BSY bit in the conversion register is set to 1. When this
happens, the ADS1100 powers up and performs a single
conversion. After the conversion completes, the ADS1100
places the result in the output register, resets the ST/BSY bit
to 0 and powers down. Writing a 1 to ST/BSY while a
conversion is in progress has no effect.
When switching from continuous conversion mode to single
conversion mode, the ADS1100 will complete the current
conversion, reset the ST/BSY bit to 0 and power down.
RESET AND POWER-UP
When the ADS1100 powers up, it automatically performs a
reset. As part of the reset, the ADS1100 sets all of the bits
in the configuration register to their default setting.
The ADS1100 responds to the I2C General Call Reset
command. When the ADS1100 receives a General Call
Reset, it performs an internal reset, exactly as though it had
just been powered on.
I2C INTERFACE
The ADS1100 communicates through an I2C (Inter-Inte-
grated Circuit) interface. The I2C interface is a 2-wire open-
drain interface supporting multiple devices and masters on a
single bus. Devices on the I2C bus only drive the bus lines
LOW, by connecting them to ground; they never drive the
bus lines HIGH. Instead, the bus wires are pulled HIGH by
pull-up resistors, so the bus wires are HIGH when no device
is driving them LOW. This way, two devices cannot conflict;
if two devices drive the bus simultaneously, there is no driver
contention.


Número de pieza similar - ADS1100A0IDBVR

Fabricante ElectrónicoNo. de piezaDatasheetDescripción Electrónicos
logo
Burr-Brown (TI)
ADS1100A0IDBVR BURR-BROWN-ADS1100A0IDBVR Datasheet
282Kb / 18P
   Self-Calibrating, 16-Bit ANALOG-TO-DIGITAL CONVERTER
logo
Texas Instruments
ADS1100A0IDBVR TI1-ADS1100A0IDBVR Datasheet
486Kb / 22P
[Old version datasheet]   Self-Calibrating, 16-Bit ANALOG-TO-DIGITAL CONVERTER
NOVEMBER 2003
ADS1100A0IDBVR TI1-ADS1100A0IDBVR Datasheet
882Kb / 24P
[Old version datasheet]   Self-Calibrating, 16-Bit ANALOG-TO-DIGITAL CONVERTER
ADS1100A0IDBVRG4 TI1-ADS1100A0IDBVRG4 Datasheet
486Kb / 22P
[Old version datasheet]   Self-Calibrating, 16-Bit ANALOG-TO-DIGITAL CONVERTER
NOVEMBER 2003
More results

Descripción similar - ADS1100A0IDBVR

Fabricante ElectrónicoNo. de piezaDatasheetDescripción Electrónicos
logo
Texas Instruments
ADS1100 TI1-ADS1100_10 Datasheet
486Kb / 22P
[Old version datasheet]   Self-Calibrating, 16-Bit ANALOG-TO-DIGITAL CONVERTER
NOVEMBER 2003
logo
Burr-Brown (TI)
ADS1100 BURR-BROWN-ADS1100 Datasheet
282Kb / 18P
   Self-Calibrating, 16-Bit ANALOG-TO-DIGITAL CONVERTER
logo
Texas Instruments
ADS1100 TI1-ADS1100_14 Datasheet
882Kb / 24P
[Old version datasheet]   Self-Calibrating, 16-Bit ANALOG-TO-DIGITAL CONVERTER
ADS850 TI-ADS850 Datasheet
304Kb / 15P
[Old version datasheet]   14-Bit, 10MSPS Self-Calibrating ANALOG-TO-DIGITAL CONVERTER
logo
List of Unclassifed Man...
MN6400 ETC1-MN6400 Datasheet
1Mb / 8P
   50kHz, 16-bit Self-Calibrating Sampling A/D Converter
logo
National Semiconductor ...
ADC16061 NSC-ADC16061_06 Datasheet
905Kb / 21P
   Self-Calibrating 16-Bit, 2.5MSPS, 390mW A/D Converter
logo
List of Unclassifed Man...
MN6450 ETC1-MN6450 Datasheet
1Mb / 8P
   47KHZ 16-BIT SELF-CALIBRATING SAMPLING A/D CONVERTER
logo
API Technologies Corp
MN6400 APITECH-MN6400 Datasheet
1Mb / 8P
   50kHz, 16-bit Self-Calibrating Sampling A/D Converter
MN6450 APITECH-MN6450 Datasheet
1Mb / 8P
   47kHz, 16-bit Self-calibrating Sampling A/D Converter
logo
Micro Analog systems
MAS6501 MAS-MAS6501 Datasheet
205Kb / 16P
   16-Bit Analog-to-Digital 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


Datasheet Descarga

Go To PDF Page


Enlace URL




Política de Privacidad
ALLDATASHEET.ES
¿ALLDATASHEET es útil para Ud.?  [ DONATE ] 

Todo acerca de Alldatasheet   |   Publicidad   |   Contáctenos   |   Política de Privacidad   |   Intercambio de Enlaces   |   Lista de Fabricantes
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