Electronic Components Datasheet Search
  English  ▼
ALLDATASHEET.NET

X  

OP275GP Datasheet(PDF) 9 Page - Analog Devices

Part # OP275GP
Description  Dual Bipolar/JFET, Audio Operational Amplifier
Download  12 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

OP275GP Datasheet(HTML) 9 Page - Analog Devices

Back Button OP275GP Datasheet HTML 4Page - Analog Devices OP275GP Datasheet HTML 5Page - Analog Devices OP275GP Datasheet HTML 6Page - Analog Devices OP275GP Datasheet HTML 7Page - Analog Devices OP275GP Datasheet HTML 8Page - Analog Devices OP275GP Datasheet HTML 9Page - Analog Devices OP275GP Datasheet HTML 10Page - Analog Devices OP275GP Datasheet HTML 11Page - Analog Devices OP275GP Datasheet HTML 12Page - Analog Devices  
Zoom Inzoom in Zoom Outzoom out
 9 / 12 page
background image
OP275
REV. A
–9–
+15V
+
0.1µF
2
3
8
1
4
VIN
VOUT
RL
2k
–15V
10µF
0.1µF
1/2
OP275
10µF
+
Figure 12. Unity Gain Follower
0.1µF
+15V
+
10µF
2
3
8
1
4
VIN
VOUT
2k
–15V
10µF
0.1µF
10pF
4.99k
2.49k
4.99k
+
1/2
OP275
Figure 13. Unity Gain Inverter
In inverting and noninverting applications, the feedback resis-
tance forms a pole with the source resistance and capacitance
(RS and CS) and the OP275’s input capacitance (CIN), as shown
in Figure 14. With RS and RF in the kilohm range, this pole can
create excess phase shift and even oscillation. A small capacitor,
CFB, in parallel and RFB eliminates this problem. By setting RS
(CS + CIN) = RFBCFB, the effect of the feedback pole is com-
pletely removed.
RFB
CIN
RS
CS
CFB
VOUT
Figure 14. Compensating the Feedback Pole
Attention to Source Impedances Minimizes Distortion
Since the OP275 is a very low distortion amplifier, careful atten-
tion should be given to source impedances seen by both inputs.
As with many FET-type amplifiers, the p-channel JFETs in the
OP275’s input stage exhibit a gate-to-source capacitance that
varies with the applied input voltage. In an inverting configura-
tion, the inverting input is held at a virtual ground and, as such,
does not vary with input voltage. Thus, since the gate-to-source
voltage is constant, there is no distortion due to input capaci-
tance modulation. In noninverting applications, however, the
gate-to-source voltage is not constant. The resulting capacitance
modulation can cause distortion above 1 kHz if the input im-
pedance is > 2 k
Ω and unbalanced.
Figure 15 shows some guidelines for maximizing the distortion
performance of the OP275 in noninverting applications. The
best way to prevent unwanted distortion is to ensure that the
parallel combination of the feedback and gain setting resistors
(RF and RG) is less than 2 k
Ω. Keeping the values of these resis-
tors small has the added benefits of reducing the thermal noise
0P275
VIN
VOUT
RF
RG
RS*
* RS = RG//RF IF RG//RF > 2kΩ
FOR MINIMUM DISTORTION
Figure 15. Balanced Input Impedance to Minimize
Distortion in Noninverting Amplifier Circuits
16–20V
0.1µF
V+
±5V
RL
1k
D1
D2
+15V
2N4416
1k
D3
D4
OUTPUT
(TO SCOPE)
1µF
10k
IC2
RF
2k
750
2N2222A
15k
–15V
1N4148
DUT
1/2 OP260AJ
16–20V
0.1µF
10k
–+
+
SCHOTTKY DIODES D1–D4 ARE
HEWLETT-PACKARD HP5082-2835
IC1 IS 1/2 OP260AJ
IC2 IS PMI OP41EJ
V–
RG
222
Figure 11. OP275’s Settling Time Test Fixture


Similar Part No. - OP275GP

ManufacturerPart #DatasheetDescription
logo
Analog Devices
OP275GP AD-OP275GP Datasheet
393Kb / 12P
   Dual Bipolar/JFET, Audio Operational Amplifier
REV. C
OP275GPZ AD-OP275GPZ Datasheet
289Kb / 12P
   Dual Bipolar/JFET, Audio Operational Amplifier
More results

Similar Description - OP275GP

ManufacturerPart #DatasheetDescription
logo
Analog Devices
OP275 AD-OP275_15 Datasheet
289Kb / 12P
   Dual Bipolar/JFET, Audio Operational Amplifier
OP275 AD-OP275_04 Datasheet
393Kb / 12P
   Dual Bipolar/JFET, Audio Operational Amplifier
REV. C
OP176 AD-OP176_15 Datasheet
683Kb / 21P
   Bipolar/JFET, Audio Operational Amplifier
OP176 AD-OP176 Datasheet
681Kb / 21P
   Bipolar/JFET, Audio Operational Amplifier
REV. 0
logo
National Semiconductor ...
LME49880 NSC-LME49880 Datasheet
502Kb / 14P
   Dual JFET Input Audio Operational Amplifier
logo
Texas Instruments
LME49880 TI1-LME49880 Datasheet
1Mb / 18P
[Old version datasheet]   E-Series Dual JFET Input Audio Operational Amplifier
logo
Fairchild Semiconductor
LF353 FAIRCHILD-LF353 Datasheet
40Kb / 6P
   Dual Operational Amplifier (JFET)
LM353 FAIRCHILD-LM353 Datasheet
52Kb / 3P
   DUAL OPERATIONAL AMPLIFIER (JFET)
Rev. B
KF353 FAIRCHILD-KF353 Datasheet
34Kb / 6P
   Dual Operational Amplifier (JFET)
logo
New Japan Radio
NJM4585 NJRC-NJM4585 Datasheet
847Kb / 6P
   Low Noise, Bipolar Input Dual, Audio Operational amplifier
Ver.00
More results


Html Pages

1 2 3 4 5 6 7 8 9 10 11 12


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