Electronic Components Datasheet Search
  English  ▼
ALLDATASHEET.COM

X  

596288565013A Datasheet(PDF) 9 Page - Analog Devices

Part # 596288565013A
Description  Very Low Noise Quad Operational Amplifier
Download  16 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

596288565013A Datasheet(HTML) 9 Page - Analog Devices

Back Button 596288565013A Datasheet HTML 5Page - Analog Devices 596288565013A Datasheet HTML 6Page - Analog Devices 596288565013A Datasheet HTML 7Page - Analog Devices 596288565013A Datasheet HTML 8Page - Analog Devices 596288565013A Datasheet HTML 9Page - Analog Devices 596288565013A Datasheet HTML 10Page - Analog Devices 596288565013A Datasheet HTML 11Page - Analog Devices 596288565013A Datasheet HTML 12Page - Analog Devices 596288565013A Datasheet HTML 13Page - Analog Devices Next Button
Zoom Inzoom in Zoom Outzoom out
 9 / 16 page
background image
REV. B
OP470
–9–
500
5k
V1 20V p-p
1/4
OP470
50
50k
CHANNEL SEPARATION = 20 LOG
V1
V2/1000
V2
1/4
OP470
Figure 2. Channel Separation Test Circuit
7
6
5
1
2
3
+1V
+18V
4
–18V
11
A
+1V
B
D
14
13
12
–1V
C
8
9
10
–1V
Figure 3. Burn-In Circuit
APPLICATIONS INFORMATION
Voltage and Current Noise
The OP470 is a very low-noise quad op amp, exhibiting a typi-
cal voltage noise of only 3.2 nV
÷Hz @ 1 kHz. The exceptionally
low-noise characteristics of the OP470 are in part achieved by
operating the input transistors at high collector currents since
the voltage noise is inversely proportional to the square root of
the collector current. Current noise, however, is directly propor-
tional to the square root of the collector current. As a result, the
outstanding voltage noise performance of the OP470 is gained
at the expense of current noise performance, which is typical for
low noise amplifiers.
To obtain the best noise performance in a circuit, it is vital to
understand the relationship between voltage noise (en), current
noise (in), and resistor noise (et).
TOTAL NOISE AND SOURCE RESISTANCE
The total noise of an op amp can be calculated by:
Ee
i R
e
nn
n
S
t
=
() + () + ()
22
2
where:
En = total input referred noise
en = up amp voltage noise
in = op amp current noise
et = source resistance thermal noise
RS = source resistance
The total noise is referred to the input and at the output would
be amplified by the circuit gain. Figure 4 shows the relationship
between total noise at 1 kHz and source resistance. For RS < 1 k
W
the total noise is dominated by the voltage noise of the OP470.
As RS rises above 1 k
W, total noise increases and is dominated
by resistor noise rather than by voltage or current noise of the
OP470. When RS exceeds 20 k
W, current noise of the OP470
becomes the major contributor to total noise.
Figure 5 also shows the relationship between total noise and
source resistance, but at 10 Hz. Total noise increases more
quickly than shown in Figure 4 because current noise is inversely
proportional to the square root of frequency. In Figure 5, current
noise of the OP470 dominates the total noise when RS > 5 k
W.
From Figures 4 and 5 it can be seen that to reduce total noise,
source resistance must be kept to a minimum. In applications
with a high source resistance, the OP400, with lower current
noise than the OP470, will provide lower total noise.
RS – SOURCE RESISTANCE –
100
1
100
100k
10
10k
1k
OP11
OP400
OP471
OP470
RESISTOR
NOISE ONLY
Figure 4. Total Noise vs. Source Resistance (Including
Resistor Noise) at 1 kHz
RS – SOURCE RESISTANCE –
100
1
100
100k
10
10k
1k
OP11
OP400
OP471
OP470
RESISTOR
NOISE ONLY
Figure 5. Total Noise vs. Source Resistance (Including
Resistor Noise) at 10 Hz


Similar Part No. - 596288565013A

ManufacturerPart #DatasheetDescription
logo
Analog Devices
596288565013A AD-596288565013A Datasheet
3Mb / 16P
   Very Low Noise Quad Operational Amplifier
REV. B
596288565013A AD-596288565013A Datasheet
3Mb / 16P
   Very Low Noise Quad Operational Amplifier
REV. B
More results

Similar Description - 596288565013A

ManufacturerPart #DatasheetDescription
logo
Analog Devices
OP470 AD-OP470_15 Datasheet
3Mb / 16P
   Very Low Noise Quad Operational Amplifier
OP470GPZ AD-OP470GPZ Datasheet
3Mb / 16P
   Very Low Noise Quad Operational Amplifier
REV. B
5962-88565012A AD-5962-88565012A Datasheet
3Mb / 16P
   Very Low Noise Quad Operational Amplifier
REV. B
5962R8856501VCA AD-5962R8856501VCA Datasheet
248Kb / 5P
   Very low noise, quad, operational amplifier
REV. B
OP-470 AD-OP-470 Datasheet
587Kb / 15P
   VERY LOW NOISE QUAD OPERATIONAL AMPLIFIER
OP470AY AD-OP470AY Datasheet
771Kb / 16P
   Very Low Noise Quad Operational Amplifier
REV. B
logo
Intersil Corporation
HS-OP470ARH INTERSIL-HS-OP470ARH Datasheet
27Kb / 2P
   Radiation Hardened, Very Low Noise Quad Operational Amplifier
logo
STMicroelectronics
MC33079 STMICROELECTRONICS-MC33079_08 Datasheet
142Kb / 12P
   Low noise quad operational amplifier
logo
National Semiconductor ...
LM837 NSC-LM837 Datasheet
414Kb / 8P
   Low Noise Quad Operational Amplifier
logo
STMicroelectronics
TL074 STMICROELECTRONICS-TL074_V01 Datasheet
1Mb / 18P
   Low-noise JFET quad operational amplifier
November 2013
More results


Html Pages

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


Datasheet Download

Go To PDF Page


Link URL




Privacy Policy
ALLDATASHEET.COM
Does ALLDATASHEET help your business so far?  [ DONATE ] 

About Alldatasheet   |   Advertisement   |   Datasheet Upload   |   Contact us   |   Privacy Policy   |   Link Exchange   |   Manufacturer List
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