Os motores de busca de Datasheet de Componentes eletrônicos
  Portuguese  ▼
ALLDATASHEETPT.COM

X  

TLA2024 Folha de dados(PDF) 10 Page - Texas Instruments

Click here to check the latest version.
Nome de Peças TLA2024
Descrição Electrónicos  Cost-Optimized, Ultra-Small, 12-Bit, System-Monitoring ADCs
Download  33 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Fabricante Electrônico  TI1 [Texas Instruments]
Página de início  http://www.ti.com
Logo TI1 - Texas Instruments

TLA2024 Folha de dados(HTML) 10 Page - Texas Instruments

Back Button TLA2024 Datasheet HTML 6Page - Texas Instruments TLA2024 Datasheet HTML 7Page - Texas Instruments TLA2024 Datasheet HTML 8Page - Texas Instruments TLA2024 Datasheet HTML 9Page - Texas Instruments TLA2024 Datasheet HTML 10Page - Texas Instruments TLA2024 Datasheet HTML 11Page - Texas Instruments TLA2024 Datasheet HTML 12Page - Texas Instruments TLA2024 Datasheet HTML 13Page - Texas Instruments TLA2024 Datasheet HTML 14Page - Texas Instruments Next Button
Zoom Inzoom in Zoom Outzoom out
 10 / 33 page
background image
t
SAMPLE
ON
OFF
S
1
S
2
OFF
ON
Equivalent
Circuit
fMOD = 250 kHz
ZCM
ZDIFF
ZCM
AINN
AINP
0.7 V
0.7 V
S1
S1
CA1
CB
CA2
S2
S2
0.7 V
0.7 V
AINN
AINP
10
TLA2021, TLA2022, TLA2024
SBAS846 – NOVEMBER 2017
www.ti.com
Product Folder Links: TLA2021 TLA2022 TLA2024
Submit Documentation Feedback
Copyright © 2017, Texas Instruments Incorporated
Feature Description (continued)
8.3.2 Analog Inputs
The TLA202x use a switched-capacitor input stage where capacitors are continuously charged and then
discharged to measure the voltage between AINP and AINN. The frequency at which the input signal is sampled
is referred to as the sampling frequency or the modulator frequency (fMOD). The TLA202x have a 1-MHz internal
oscillator that is further divided by a factor of 4 to generate fMOD at 250 kHz. The capacitors used in this input
stage are small, and to external circuitry, the average loading appears resistive. Figure 9 shows this structure.
The capacitor values set the resistance and switching rate. Figure 10 shows the timing for the switches in
Figure 9. During the sampling phase, switches S1 are closed. This event charges CA1 to VAINP, CA2 to VAINN, and
CB to (VAINP – VAINN). During the discharge phase, S1 is first opened and then S2 is closed. CA1 and CA2 then
discharge to approximately 0.7 V and CB discharges to 0 V. This charging draws a very small transient current
from the source driving the TLA202x analog inputs. The average value of this current can be used to calculate
the effective impedance (Zeff), where Zeff = VIN / IAVERAGE.
Figure 9. Simplified Analog Input Circuit
Figure 10. S1 and S2 Switch Timing
The common-mode input impedance is measured by applying a common-mode signal to the shorted AINP and
AINN inputs and measuring the average current consumed by each pin. The common-mode input impedance
changes depending on the full-scale range, but is approximately 6 M
Ω for the default full-scale range. In
Figure 9, the common-mode input impedance is ZCM.
The differential input impedance is measured by applying a differential signal to the AINP and AINN inputs where
one input is held at 0.7 V. The current that flows through the pin connected to 0.7 V is the differential current and
scales with the full-scale range. In Figure 9, the differential input impedance is ZDIFF.
Consider the typical value of the input impedance. Unless the input source has a low impedance, the TLA202x
input impedance may affect the measurement accuracy. For sources with high-output impedance, buffering may
be necessary. Active buffers introduce noise, offset, and gain errors. Consider all of these factors in high-
accuracy applications.
The clock oscillator frequency drifts slightly with temperature; therefore, the input impedances also drift. For most
applications, this input impedance drift is negligible and can be ignored.


Nº de peça semelhante - TLA2024

Fabricante ElectrônicoNome de PeçasFolha de dadosDescrição Electrónicos
logo
Filtran LTD
TLA2276 FILTRAN-TLA2276 Datasheet
51Kb / 1P
   Audio Hybrid Transformer
logo
Texas Instruments
TLA2518 TI1-TLA2518 Datasheet
416Kb / 32P
[Old version datasheet]   TLA2518 Small, 8-Channel, 12-Bit ADC With SPI Interface and GPIOs
TLA2518IRTER TI1-TLA2518IRTER Datasheet
416Kb / 32P
[Old version datasheet]   TLA2518 Small, 8-Channel, 12-Bit ADC With SPI Interface and GPIOs
TLA2518IRTET TI1-TLA2518IRTET Datasheet
416Kb / 32P
[Old version datasheet]   TLA2518 Small, 8-Channel, 12-Bit ADC With SPI Interface and GPIOs
TLA2528 TI1-TLA2528 Datasheet
459Kb / 36P
[Old version datasheet]   TLA2528 Small, 8-Channel, 12-Bit ADC With I2C Interface and GPIOs
More results

Descrição semelhante - TLA2024

Fabricante ElectrônicoNome de PeçasFolha de dadosDescrição Electrónicos
logo
Maxim Integrated Produc...
MAX11612 MAXIM-MAX11612_11 Datasheet
310Kb / 22P
   Low-Power, 4-/8-/12-Channel, I2C, 12-Bit ADCs in Ultra-Small Packages
Rev 3; 2/11
logo
Analog Devices
AD7475ARZ AD-AD7475ARZ Datasheet
453Kb / 24P
   1MSPS,12-Bit ADCs
REV. B
logo
Maxim Integrated Produc...
MAX11606 MAXIM-MAX11606_11 Datasheet
387Kb / 22P
   Low-Power, 4-/8-/12-Channel, I2C, 10-Bit ADCs in Ultra-Small Packages
Rev 3; 2/11
MAX11606 MAXIM-MAX11606_V01 Datasheet
964Kb / 22P
   Low-Power, 4-/8-/12-Channel, I2C, 10-Bit ADCs in Ultra-Small Packages
2019
logo
Analog Devices
AD7475 AD-AD7475 Datasheet
218Kb / 16P
   1 MSPS, 12-Bit ADCs
REV. A
logo
Linear Technology
LTC2220 LINER-LTC2220_15 Datasheet
802Kb / 32P
   12-Bit,170Msps/ 135Msps ADCs
LTC2223 LINER-LTC2223_15 Datasheet
929Kb / 28P
   12-Bit,105Msps/ 80Msps ADCs
LTC2222 LINER-LTC2222_15 Datasheet
929Kb / 28P
   12-Bit,105Msps/ 80Msps ADCs
logo
API Technologies Corp
HS5210 APITECH-HS5210 Datasheet
2Mb / 3P
   12-Bit Adjustment Free ADCs
logo
Linear Technology
LTC2220 LINER-LTC2220 Datasheet
802Kb / 32P
   12-Bit,170Msps/ 135Msps ADCs
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 29 30 31 32 33


Folha de dados Download

Go To PDF Page


Ligação URL




Privacy Policy
ALLDATASHEETPT.COM
ALLDATASHEET é útil para você?  [ DONATE ] 

Sobre Alldatasheet   |   Publicidade   |   Contato conosco   |   Privacy Policy   |   roca de Link   |   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