Electronic Components Datasheet Search
  English  ▼
ALLDATASHEET.NET

X  

OP481GS Datasheet(PDF) 11 Page - Analog Devices

Part # OP481GS
Description  Ultralow Power, Rail-to-Rail Output Operational Amplifiers
Download  16 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

OP481GS Datasheet(HTML) 11 Page - Analog Devices

Back Button OP481GS Datasheet HTML 7Page - Analog Devices OP481GS Datasheet HTML 8Page - Analog Devices OP481GS Datasheet HTML 9Page - Analog Devices OP481GS Datasheet HTML 10Page - Analog Devices OP481GS Datasheet HTML 11Page - Analog Devices OP481GS Datasheet HTML 12Page - Analog Devices OP481GS Datasheet HTML 13Page - Analog Devices OP481GS Datasheet HTML 14Page - Analog Devices OP481GS Datasheet HTML 15Page - Analog Devices Next Button
Zoom Inzoom in Zoom Outzoom out
 11 / 16 page
background image
OP181/OP281/OP481
–11–
REV. 0
10
0%
100
90
0.2ms
0.1V
0V
VIN
VOUT
Figure 35. Input and Output Signals with VCM < 0 V
Overdrive Recovery Time
The amount of time it takes for an amplifier to recover from
saturation can be an important consideration when using an
amplifier as a comparator or when outputs can be driven to the
supplies. The overdrive recovery time for the OP181 is 50
µs
with the amplifier running from a 3 volt supply and increases
to 100
µs with a 10 volt supply. Figure 36 shows the result of
the OP181 running from a 3 V supply with its output being
overdriven.
10
0%
100
90
0.2ms
0.1V
VS = +3V
AV = +100
VIN
SCALE 0.1V
0V
VOUT
SCALE 1V
0V
Figure 36. Output of the Op Amp Recovering from
Saturation
Capacitive Loading
Most low supply current amplifiers have difficulty driving
capacitive loads due to the higher currents required from the
output stage for such loads. Higher capacitance at the output
will increase the amount of overshoot and ringing in the
amplifier’s step response and could even affect the stability of
the device. However, through careful design of the output stage
and its high phase margin, the OPx81 family can tolerate some
degree of capacitive loading. Figure 37 shows the step response
of an OP181 with a 10 nF capacitor connected at the output.
Notice that the overshoot of the output does not exceed more
than 10% with such a load, even with a supply voltage of only
+3 V.
10
0%
100
90
Figure 37. Ringing and Overshoot of the Output of the
Amplifier
A Micropower Reference Voltage Generator
Many single supply circuits are configured with the circuit
biased to 1/2 of the supply voltage. In these cases, a false-
ground reference can be created by using a voltage divider
buffered by an amplifier. Figure 38 shows the schematic for
such a circuit.
The two 1 M
Ω resistors generate the reference voltage while
drawing only 1.5
µA of current from a 3 V supply. A capacitor
connected from the inverting terminal to the output of the op
amp provides compensation to allow for a bypass capacitor to be
connected at the reference output. This bypass capacitor helps
establish an ac ground for the reference output. The entire
reference generator draws less than 5
µA from a 3 V supply
source.
6
7
4
2
3
OP181
10k
0.022µF
VREF
+1.5V TO +6V
1µF
1µF
1M
+3V TO +12V
100
1M
Figure 38. A Micropower Bias Voltage Generator
A Window Comparator
The extremely low power supply current demands of the OPx81
family make it ideal for use in long life battery powered applica-
tions such as a monitoring system. Figure 39 shows a circuit
that uses the OP281 as a window comparator.


Similar Part No. - OP481GS

ManufacturerPart #DatasheetDescription
logo
Analog Devices
OP481GS AD-OP481GS Datasheet
963Kb / 16P
   Ultralow Power, Rail-to-Rail Output Operational Amplifiers
REV. B
OP481GS AD-OP481GS Datasheet
446Kb / 20P
   Ultralow Power, Rail-to-Rail Output Operational Amplifiers
REV. C
OP481GS-REEL AD-OP481GS-REEL Datasheet
446Kb / 20P
   Ultralow Power, Rail-to-Rail Output Operational Amplifiers
REV. C
OP481GS-REEL7 AD-OP481GS-REEL7 Datasheet
446Kb / 20P
   Ultralow Power, Rail-to-Rail Output Operational Amplifiers
REV. C
OP481GSZ AD-OP481GSZ Datasheet
446Kb / 20P
   Ultralow Power, Rail-to-Rail Output Operational Amplifiers
REV. C
More results

Similar Description - OP481GS

ManufacturerPart #DatasheetDescription
logo
Analog Devices
OP281 AD-OP281_07 Datasheet
446Kb / 20P
   Ultralow Power, Rail-to-Rail Output Operational Amplifiers
REV. C
OP281 AD-OP281 Datasheet
963Kb / 16P
   Ultralow Power, Rail-to-Rail Output Operational Amplifiers
REV. B
OP281 AD-OP281_15 Datasheet
396Kb / 20P
   Ultralow Power, Rail-to-Rail Output Operational Amplifiers
OP481 AD-OP481_15 Datasheet
396Kb / 20P
   Ultralow Power, Rail-to-Rail Output Operational Amplifiers
OP181 AD-OP181_15 Datasheet
311Kb / 16P
   Ultralow Power, Rail-to-Rail Output Operational Amplifiers
REV. 0
logo
Unisonic Technologies
LV358 UTC-LV358_17 Datasheet
408Kb / 12P
   RAIL-TO-RAIL OUTPUT OPERATIONAL AMPLIFIERS
logo
STMicroelectronics
TS461 STMICROELECTRONICS-TS461_05 Datasheet
192Kb / 12P
   Output Rail-to-Rail Operational Amplifiers
logo
SG Micro Corp
SGM8931 SGMICRO-SGM8931 Datasheet
365Kb / 16P
   Rail-to-Rail Output Operational Amplifiers
logo
STMicroelectronics
TS464CDT STMICROELECTRONICS-TS464CDT Datasheet
280Kb / 13P
   Output rail-to-rail operational amplifiers
logo
Texas Instruments
LPV321 TI1-LPV321_13 Datasheet
1Mb / 30P
[Old version datasheet]   Rail-to-Rail Output Operational Amplifiers
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.NET
Does ALLDATASHEET help your business so far?  [ DONATE ] 

About Alldatasheet   |   Advertisement   |   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