поискавой системы для электроныых деталей
  Russian  ▼
ALLDATASHEETRU.COM

X  

OP1177AR датащи(PDF) 11 Page - Analog Devices

номер детали OP1177AR
подробное описание детали  Precision Low Noise, Low Input Bias Current Operational Amplifiers
Download  20 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
производитель  AD [Analog Devices]
домашняя страница  http://www.analog.com
Logo AD - Analog Devices

OP1177AR датащи(HTML) 11 Page - Analog Devices

Back Button OP1177AR Datasheet HTML 7Page - Analog Devices OP1177AR Datasheet HTML 8Page - Analog Devices OP1177AR Datasheet HTML 9Page - Analog Devices OP1177AR Datasheet HTML 10Page - Analog Devices OP1177AR Datasheet HTML 11Page - Analog Devices OP1177AR Datasheet HTML 12Page - Analog Devices OP1177AR Datasheet HTML 13Page - Analog Devices OP1177AR Datasheet HTML 14Page - Analog Devices OP1177AR Datasheet HTML 15Page - Analog Devices Next Button
Zoom Inzoom in Zoom Outzoom out
 11 / 20 page
background image
REV. B
OP1177/OP2177/OP4177
–11–
Use an additional resistor in series with the inputs if the voltage
will exceed the supplies by more than 2.5 V. The value of the
resistor can be determined from the formula:
VV
R
mA
IN
S
S
()
+
500
5
With the OP1177’s low input offset current of <1 nA max, placing
a 5 k
Ω resistor in series with both inputs adds less than 5 µV to
input offset voltage and has a negligible impact on the overall
noise performance of the circuit.
5 k
Ω will protect the inputs to more than 27 V beyond either supply.
Refer to the THD + N section for additional information on
noise versus source resistance.
Output Phase Reversal
Phase reversal is defined as a change of polarity in the amplifier
transfer function. Many operational amplifiers exhibit phase reversal
when the voltage applied to the input is greater than the maxi-
mum common-mode voltage. In some instances this can cause
permanent damage to the amplifier. In feedback loops, it can
result in system lockups or equipment damage. The OP1177 is
immune to phase reversal problems even at input voltages beyond
the supplies.
VOUT
VIN
VSY =
10V
AV = 1
TIME – 400 s/DIV
Figure 3. No Phase Reversal
Settling Time
Settling time is defined as the time it takes an amplifier output
to reach and remain within a percentage of its final value after
application of an input pulse. It is especially important in mea-
surement and control circuits where amplifiers buffer A/D inputs
or DAC outputs.
To minimize settling time in amplifier circuits, use proper bypassing
of power supplies and an appropriate choice of circuit components.
Resistors should be metal film types as these have less stray
capacitance and inductance than their wire-wound counterparts.
Capacitors should be polystyrene or polycarbonate types to
minimize dielectric absorption.
The leads from the power supply should be kept as short as
possible to minimize capacitance and inductance. The OP1177
has a settling time of about 45
µs to 0.01% (1 mV) with a 10 V
step applied to the input in a noninverting unity gain.
Overload Recovery Time
Overload recovery is defined as the time it takes the output voltage
of an amplifier to recover from a saturated condition to its linear
response region. A common example is where the output voltage
demanded by the circuit’s transfer function lies beyond the maxi-
mum output voltage capability of the amplifier. A 10 V input
applied to an amplifier in a closed-loop gain of 2 will demand an
output voltage of 20 V. This is beyond the output voltage range of
the OP1177 when operating at
±15 V supplies and will force the
output into saturation.
Recovery time is important in many applications, particularly where
the op amp must amplify small signals in the presence of large
transient voltages.
10k
100k
R2
1k
R1
V+
1
4
2
3
7
OP1177
+
V
VOUT
200mV
Figure 4. Test Circuit for Overload Recovery Time
TPC 12 shows the positive overload recovery time of the OP1177.
The output recovers in less than 4
µs after being overdriven by
more than 100%.
The negative overload recovery of the OP1177 is 1.4
µs as seen
in TPC 13.
THD + Noise
The OP1177 has very low total harmonic distortion. This indicates
excellent gain linearity and makes the OP1177 a great choice for
high closed-loop gain precision circuits.
Figure 5 shows that the OP1177 has approximately 0.00025%
distortion in unity gain, the worst-case configuration for distortion.
FREQUENCY – Hz
0.1
0.01
0.0001
20
100
1k
0.001
6k
VSY =
15V
RL = 10k
BW = 22kHz
Figure 5. THD + N vs. Frequency
Capacitive Load Drive
OP1177 is inherently stable at all gains and capable of driving
large capacitive loads without oscillation. With no external com-
pensation, the OP1177 will safely drive capacitive loads up to
1000 pF in any configuration. As with virtually any amplifier,
driving larger capacitive loads in unity gain requires additional
circuitry to assure stability.
In this case, a “snubber network” is used to prevent oscillation
and reduce the amount of overshoot. A significant advantage of
this method is that it does not reduce the output swing because
the resistor RS is not inside the feedback loop.


Аналогичный номер детали - OP1177AR

производительномер деталидатащиподробное описание детали
logo
Analog Devices
OP1177AR AD-OP1177AR Datasheet
493Kb / 24P
   Precision Low Noise, Low Input Bias Current Operational Amplifiers
REV. E
OP1177AR AD-OP1177AR Datasheet
479Kb / 24P
   Precision Low Noise, Low Input Bias Current Operational Amplifiers
Rev. G
OP1177AR-REEL AD-OP1177AR-REEL Datasheet
493Kb / 24P
   Precision Low Noise, Low Input Bias Current Operational Amplifiers
REV. E
OP1177AR-REEL7 AD-OP1177AR-REEL7 Datasheet
493Kb / 24P
   Precision Low Noise, Low Input Bias Current Operational Amplifiers
REV. E
OP1177ARM-R2 AD-OP1177ARM-R2 Datasheet
493Kb / 24P
   Precision Low Noise, Low Input Bias Current Operational Amplifiers
REV. E
More results

Аналогичное описание - OP1177AR

производительномер деталидатащиподробное описание детали
logo
Analog Devices
OP1177 AD-OP1177_15 Datasheet
479Kb / 24P
   Precision Low Noise, Low Input Bias Current Operational Amplifiers
OP2177 AD-OP2177_15 Datasheet
479Kb / 24P
   Precision Low Noise, Low Input Bias Current Operational Amplifiers
OP1177 AD-OP1177_07 Datasheet
493Kb / 24P
   Precision Low Noise, Low Input Bias Current Operational Amplifiers
REV. E
OP4177 AD-OP4177_15 Datasheet
479Kb / 24P
   Precision Low Noise, Low Input Bias Current Operational Amplifiers
OP1177 AD-OP1177_09 Datasheet
479Kb / 24P
   Precision Low Noise, Low Input Bias Current Operational Amplifiers
Rev. G
AD8671 AD-AD8671_05 Datasheet
465Kb / 16P
   Precision, Very Low Noise, Low Input Bias Current Operational Amplifiers
REV. C
AD8671 AD-AD8671 Datasheet
92Kb / 4P
   Precision Very Low Noise Low Input Bias Current Operational Amplifiers
Rev 0.2 2/21/02
AD8672ARMZ AD-AD8672ARMZ Datasheet
439Kb / 20P
   Precision, Very Low Noise, Low Input Bias Current Operational Amplifiers
Rev. F
ADA4610-2 AD-ADA4610-2 Datasheet
149Kb / 4P
   Precision, Low Noise, Low Input Bias Current, Wide Bandwidth JFET Operational Amplifiers
Rev. PrA
AD8510 AD-AD8510_07 Datasheet
465Kb / 20P
   Precision, Very Low Noise, Low Input Bias Current, Wide Bandwidth JFET Operational Amplifiers
Rev. H
More results


Html Pages

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


датащи скачать

Go To PDF Page


ссылки URL




Конфиденциальность
ALLDATASHEETRU.COM
Вашему бизинису помогли Аллдатащит?  [ DONATE ] 

Что такое Аллдатащит   |   реклама   |   контакт   |   Конфиденциальность   |   обмен ссыками   |   поиск по производителю
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