Moteur de recherche de fiches techniques de composants électroniques
  French  ▼
ALLDATASHEET.FR

X  

AD8293G160BRJZ-R7 Fiches technique(PDF) 10 Page - Analog Devices

No de pièce AD8293G160BRJZ-R7
Description  Low Cost, Zero-Drift In-Amp with Filter and Fixed Gain
Download  16 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Fabricant  AD [Analog Devices]
Site Internet  http://www.analog.com
Logo AD - Analog Devices

AD8293G160BRJZ-R7 Fiches technique(HTML) 10 Page - Analog Devices

Back Button AD8293G160BRJZ-R7 Datasheet HTML 6Page - Analog Devices AD8293G160BRJZ-R7 Datasheet HTML 7Page - Analog Devices AD8293G160BRJZ-R7 Datasheet HTML 8Page - Analog Devices AD8293G160BRJZ-R7 Datasheet HTML 9Page - Analog Devices AD8293G160BRJZ-R7 Datasheet HTML 10Page - Analog Devices AD8293G160BRJZ-R7 Datasheet HTML 11Page - Analog Devices AD8293G160BRJZ-R7 Datasheet HTML 12Page - Analog Devices AD8293G160BRJZ-R7 Datasheet HTML 13Page - Analog Devices AD8293G160BRJZ-R7 Datasheet HTML 14Page - Analog Devices Next Button
Zoom Inzoom in Zoom Outzoom out
 10 / 16 page
background image
AD8293G80/AD8293G160
Rev. 0 | Page 10 of 16
THEORY OF OPERATION
The AD8293G80/AD8293G160 are precision current-mode
correction instrumentation amplifiers capable of single-supply
operation. The current-mode correction topology results in
excellent accuracy. Figure 18 shows a simplified diagram
illustrating the basic operation of the AD8293G80/AD8293G160
(without correction). The circuit consists of a voltage-to-current
amplifier (M1 to M6), followed by a current-to-voltage amplifier
(R2 and A1). Application of a differential input voltage forces a
current through External Resistor R1, resulting in conversion of
the input voltage to a signal current. Transistor M3 to Transistor
M6 transfer twice this signal current to the inverting input of
the op amp A1. Amplifier A1 and External Resistor R2 form
a current-to-voltage converter to produce a rail-to-rail output
voltage at VOUT.
Op amp A1 is a high precision auto-zero amplifier. This amplifier
preserves the performance of the autocorrecting, current-mode
amplifier topology while offering the user a true voltage-in,
voltage-out instrumentation amplifier. Offset errors are corrected
internally.
An external reference voltage is applied to the noninverting
input of A1 to set the output reference level. External Capacitor
C2 is used to filter out correction noise.
HIGH PSR AND CMR
Common-mode rejection and power supply rejection indicate
the amount that the offset voltage of an amplifier changes when
its common-mode input voltage or power supply voltage changes.
The autocorrection architecture of the AD8293G80/AD8293G160
continuously corrects for offset errors, including those induced
by changes in input or supply voltage, resulting in exceptional
rejection performance. The continuous autocorrection provides
great CMR and PSR performances over the entire operating
temperature range (−40°C to +85°C).
The parasitic resistance in series with R2 does not degrade CMR,
but causes a small gain error and a very small offset error.
Therefore, an external buffer amplifier is not required to drive
VREF to maintain excellent CMR performance. This helps reduce
system costs over conventional instrumentation amplifiers.
1/f NOISE CORRECTION
Flicker noise, also known as 1/f noise, is noise inherent in the
physics of semiconductor devices and decreases 10 dB per decade.
The 1/f corner frequency of an amplifier is the frequency at which
the flicker noise is equal to the broadband noise of the amplifier. At
lower frequencies, flicker noise dominates, causing large errors
in low frequency or dc applications.
Flicker noise is seen effectively as a slowly varying offset
error, which is reduced by the autocorrection topology of the
AD8293G80/AD8293G160. This allows the AD8293G80/
AD8293G160 to have lower noise near dc than standard low
noise instrumentation amplifiers.
II
I – IR1
M2
VINP
M3
M4
M1
R1
(VINP – VINN)
IR1 =
R1
2I
2I
VINN
VBIAS
M5
M6
I – IR1
I + IR1
2IR1
C2
R2
R3
A1
VINP – VINN
R1
2R2
VOUT = VREF
VREF
EXTERNAL
+
VCC
C3
Figure 18. Simplified Schematic


Numéro de pièce similaire - AD8293G160BRJZ-R7

FabricantNo de pièceFiches techniqueDescription
logo
Analog Devices
AD8293 AD-AD8293 Datasheet
284Kb / 20P
   Wide Supply Range, Rail-to-Rail Output Instrumentation Amplifier
Rev. PrD
AD8293 AD-AD8293 Datasheet
378Kb / 20P
   Low Noise, Low Gain Drift, G = 2000 Instrumentation Amplifier
REV. 0
AD8293 AD-AD8293 Datasheet
529Kb / 28P
   Wide Supply Range, Micropower,
REV. 0
AD8293 AD-AD8293 Datasheet
805Kb / 28P
   Wide Supply Range, Rail-to-Rail
REV. 0
AD8293 AD-AD8293 Datasheet
361Kb / 20P
   Low Noise, Low Gain Drift, G = 2000
REV. A
More results

Description similaire - AD8293G160BRJZ-R7

FabricantNo de pièceFiches techniqueDescription
logo
Texas Instruments
PGA112_0809 TI-PGA112_0809 Datasheet
1Mb / 47P
[Old version datasheet]   Zero-Drift,PROGRAMMABLE GAIN AMPLIFIER with MUX
logo
Analog Devices
ADA4523-1 AD-ADA4523-1 Datasheet
923Kb / 29P
   36 V, Low Noise, Zero Drift Op Amp
Rev. 0
logo
Linear Technology
LTC6915 LINER-LTC6915 Datasheet
289Kb / 16P
   Zero Drift, Precision Instrumentation Amplifier with Digitally Programmable Gain
LTC6915 LINER-LTC6915_15 Datasheet
295Kb / 18P
   Zero Drift, Precision Instrumentation Amplifier with Digitally Programmable Gain
logo
Analog Devices
ADA4254 AD-ADA4254 Datasheet
1Mb / 59P
   Zero Drift, High Voltage, Low Power, Programmable Gain Instrumentation Amplifier
Rev. B
logo
Texas Instruments
PGA280 TI-PGA280 Datasheet
900Kb / 45P
[Old version datasheet]   Zero-Drift High-Voltage Programmable Gain INSTRUMENTATION AMPLIFIER
logo
AiT Semiconductor Inc.
AO1317 AITSEMI-AO1317 Datasheet
982Kb / 13P
   350kHz, ZERO-DRIFT, LOW NOISE, SINGLE RRIO, CMOS OPAMP WITH RF FILTER
REV1.0
logo
Microchip Technology
MCP6V51 MICROCHIP-MCP6V51 Datasheet
3Mb / 43P
   45V, 2 MHz Zero-Drift Op Amp with EMI Filtering
08/15/18
logo
Analog Devices
ADA4255 AD-ADA4255 Datasheet
4Mb / 64P
   Zero Drift, High Voltage, Programmable Gain Instrumentation Amplifier with Charge Pump
logo
Microchip Technology
MCP6V51 MICROCHIP-MCP6V51_V01 Datasheet
5Mb / 50P
   45V, 2 MHz Zero-Drift Op Amp with EMI Filtering
Revision B (May 2022)
More results


Html Pages

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


Fiches technique Télécharger

Go To PDF Page


Lien URL




Politique de confidentialité
ALLDATASHEET.FR
ALLDATASHEET vous a-t-il été utile ?  [ DONATE ] 

À propos de Alldatasheet   |   Publicité   |   Contactez-nous   |   Politique de confidentialité   |   Echange de liens   |   Fabricants
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