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

X  

INA128 Fiches technique(PDF) 9 Page - Texas Instruments

Click here to check the latest version.
No de pièce INA128
Description  Precision, Low Power INSTRUMENTATION AMPLIFIERS
Download  20 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Fabricant  TI1 [Texas Instruments]
Site Internet  http://www.ti.com
Logo TI1 - Texas Instruments

INA128 Fiches technique(HTML) 9 Page - Texas Instruments

Back Button INA128 Datasheet HTML 5Page - Texas Instruments INA128 Datasheet HTML 6Page - Texas Instruments INA128 Datasheet HTML 7Page - Texas Instruments INA128 Datasheet HTML 8Page - Texas Instruments INA128 Datasheet HTML 9Page - Texas Instruments INA128 Datasheet HTML 10Page - Texas Instruments INA128 Datasheet HTML 11Page - Texas Instruments INA128 Datasheet HTML 12Page - Texas Instruments INA128 Datasheet HTML 13Page - Texas Instruments Next Button
Zoom Inzoom in Zoom Outzoom out
 9 / 20 page
background image
INA128
INA129
SBOS051B − OCTOBER 1995 − REVISED FEBRUARY 2005
www.ti.com
9
APPLICATIONS INFORMATION
Figure 1 shows the basic connections required for
operation of the INA128/INA129. Applications with noisy
or
high
impedance
power
supplies
may
require
decoupling capacitors close to the device pins as shown.
The output is referred to the output reference (Ref)
terminal which is normally grounded. This must be a
low-impedance
connection
to
assure
good
common-mode rejection. A resistance of 8
Ω in series
with the Ref pin will cause a typical device to degrade
to approximately 80dB CMR (G = 1).
SETTING THE GAIN
Gain is set by connecting a single external resistor, RG,
connected between pins 1 and 8:
INA128:
G
+ 1) 50kW
R
G
INA129:
G
+ 1) 49.4kW
R
G
Commonly used gains and resistor values are shown in
Figure 1.
The 50k
Ω term in Equation 1 (49.4kΩ in Equation 2)
comes from the sum of the two internal feedback
resistors of A1 and A2. These on-chip metal film
resistors are laser trimmed to accurate absolute values.
The accuracy and temperature coefficient of these
internal resistors are included in the gain accuracy and
drift specifications of the INA128/INA129.
The stability and temperature drift of the external gain
setting resistor, RG, also affects gain. RG’s contribution
to gain accuracy and drift can be directly inferred from
the gain equation (1). Low resistor values required for
high gain can make wiring resistance important.
Sockets add to the wiring resistance which will
contribute additional gain error (possibly an unstable
gain error) in gains of approximately 100 or greater.
DYNAMIC PERFORMANCE
The typical performance curve Gain vs Frequency
shows that, despite its low quiescent current, the
INA128/INA129 achieves wide bandwidth, even at high
gain. This is due to the current-feedback topology of the
input stage circuitry. Settling time also remains
excellent at high gain.
NOISE PERFORMANCE
The INA128/INA129 provides very low noise in most
applications. Low frequency noise is approximately
0.2
µVPP measured from 0.1 to 10Hz (G ≥ 100). This
provides dramatically improved noise when compared
to state-of-the-art chopper-stabilized amplifiers.
RG
Also drawn in simplified form:
INA128
Ref
VO
VIN
VIN
+
G
+ 1)
50k
W
R
G
G
+ 1)
49.4k
W
R
G
INA128:
INA129:
DESIRED
RG
NEAREST
RG
NEAREST
GAIN (V/V)
(
Ω)
1% RG (Ω)(Ω)
1% RG (Ω)
1
NCNC
NCNC
2
50.00k
49.9k
49.4k
49.9k
5
12.50k
12.4k
12.35k
12.4k
10
5.556k
5.62k
5489
5.49k
20
2.632k
2.61k
2600
2.61k
50
1.02k
1.02k
1008
1k
100
505.1
511
499
499
200
251.3
249
248
249
500
100.2
100
99
100
1000
50.05
49.9
49.5
49.9
2000
25.01
24.9
24.7
24.9
5000
10.00
10
9.88
9.76
10000
5.001
4.99
4.94
4.87
INA128
INA129
NC: No Connection
A
1
A2
A3
6
7
4
3
8
1
2
V
IN
VIN
RG
V+
INA128, INA129
+
5
Over−Voltage
Protection
Over−Voltage
Protection
Load
+
V
O
Ref
NOTE: (1) INA129: 24.7k
0.1
µF
0.1
µF
V−
25k
Ω(1)
25k
Ω(1)
40k
40k
40k
40k
V
O =G
(V
IN − VIN
+
)
Figure 1. Basic Connections
(1)
(2)


Numéro de pièce similaire - INA128

FabricantNo de pièceFiches techniqueDescription
logo
Burr-Brown (TI)
INA128 BURR-BROWN-INA128 Datasheet
245Kb / 10P
   Precision, Low Power INSTRUMENTATION AMPLIFIERS
logo
Texas Instruments
INA128 TI-INA128 Datasheet
1Mb / 20P
[Old version datasheet]   Precision, Low Power INSTRUMENTATION AMPLIFIERS
INA128 TI1-INA128 Datasheet
1Mb / 29P
[Old version datasheet]   INA12x Precision, Low Power Instrumentation Amplifiers
INA128-HT TI1-INA128-HT Datasheet
1Mb / 29P
[Old version datasheet]   PRECISION, LOW POWER INSTRUMENTATION AMPLIFIERS
INA128-HT TI-INA128-HT_15 Datasheet
750Kb / 30P
[Old version datasheet]   INA12x-HT Precision, Low-Power Instrumentation Amplifiers
More results

Description similaire - INA128

FabricantNo de pièceFiches techniqueDescription
logo
Texas Instruments
INA128 TI-INA128 Datasheet
1Mb / 20P
[Old version datasheet]   Precision, Low Power INSTRUMENTATION AMPLIFIERS
INA128-HT TI1-INA128-HT_15 Datasheet
834Kb / 30P
[Old version datasheet]   Precision, Low-Power Instrumentation Amplifiers
logo
Burr-Brown (TI)
INA128 BURR-BROWN-INA128 Datasheet
245Kb / 10P
   Precision, Low Power INSTRUMENTATION AMPLIFIERS
logo
Texas Instruments
INA129-EP TI1-INA129-EP_15 Datasheet
1Mb / 26P
[Old version datasheet]   Precision, Low Power Instrumentation Amplifiers
INA128-HT TI1-INA128-HT Datasheet
1Mb / 29P
[Old version datasheet]   PRECISION, LOW POWER INSTRUMENTATION AMPLIFIERS
INA129-EP TI1-INA129-EP Datasheet
1Mb / 22P
[Old version datasheet]   PRECISION, LOW POWER INSTRUMENTATION AMPLIFIERS
INA128 TI1-INA128_15 Datasheet
1Mb / 29P
[Old version datasheet]   INA12x Precision, Low Power Instrumentation Amplifiers
INA128-HT TI-INA128-HT_15 Datasheet
750Kb / 30P
[Old version datasheet]   INA12x-HT Precision, Low-Power Instrumentation Amplifiers
logo
API Technologies Corp
MN2310 APITECH-MN2310 Datasheet
1Mb / 7P
   Precision, Low-Noise JFET Instrumentation Amplifiers
logo
Burr-Brown (TI)
INA118 BURR-BROWN-INA118 Datasheet
242Kb / 11P
   Precision, Low Power INSTRUMENTATION AMPLIFIER
More results


Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20


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