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OPA129U

Description
ultra-low bias current difet operational amplifier
CategoryAnalog mixed-signal IC    Amplifier circuit   
File Size639KB,7 Pages
ManufacturerBurr-Brown
Websitehttp://www.burr-brown.com/
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OPA129U Overview

ultra-low bias current difet operational amplifier

OPA129U Parametric

Parameter NameAttribute value
Is it Rohs certified?incompatible
MakerBurr-Brown
package instructionSO-8
Reach Compliance Codeunknown
Amplifier typeOPERATIONAL AMPLIFIER
ArchitectureVOLTAGE-FEEDBACK
Maximum average bias current (IIB)2.5e-7 µA
Minimum Common Mode Rejection Ratio80 dB
Nominal Common Mode Rejection Ratio118 dB
frequency compensationYES
Maximum input offset voltage5000 µV
JESD-30 codeR-PDSO-G8
JESD-609 codee0
low-biasYES
low-dissonanceNO
micropowerNO
Negative supply voltage upper limit-18 V
Nominal Negative Supply Voltage (Vsup)-15 V
Number of functions1
Number of terminals8
Maximum operating temperature85 °C
Minimum operating temperature-40 °C
Package body materialPLASTIC/EPOXY
encapsulated codeSOP
Encapsulate equivalent codeSOP8,.25
Package shapeRECTANGULAR
Package formSMALL OUTLINE
powerNO
power supply+-15 V
Programmable powerNO
Certification statusNot Qualified
minimum slew rate1 V/us
Nominal slew rate2.5 V/us
Supply voltage upper limit18 V
Nominal supply voltage (Vsup)15 V
surface mountYES
technologyBIPOLAR
Temperature levelINDUSTRIAL
Terminal surfaceTin/Lead (Sn/Pb)
Terminal formGULL WING
Terminal pitch1.27 mm
Terminal locationDUAL
Nominal Uniform Gain Bandwidth1000 kHz
Minimum voltage gain50118.7
broadbandNO
®
OPA129
Ultra-Low Bias Current
Difet
®
OPERATIONAL AMPLIFIER
FEATURES
q
ULTRA-LOW BIAS CURRENT: 100fA max
q
q
q
q
q
LOW OFFSET: 2mV max
LOW DRIFT: 10
µ
V/
°
C max
HIGH OPEN-LOOP GAIN: 94dB min
LOW NOISE: 15nV/
Hz at 10kHz
PLASTIC DIP and SOIC PACKAGE
APPLICATIONS
q
PHOTODETECTOR PREAMP
q
q
q
q
q
CHROMATOGRAPHY
ELECTROMETER AMPLIFIERS
MASS SPECTROMETER
pH PROBE AMPLIFIER
ION GAGE MEASUREMENT
DESCRIPTION
The OPA129 is an ultra-low bias current mono-
lithic operational amplifier offered in an 8-pin PDIP
and SO-8 package. Using advanced geometry
dielectrically-isolated FET (
Difet
®
) inputs, this mono-
lithic amplifier achieves a high performance level.
Substrate
8
7
V+
Difet
fabrication eliminates isolation-junction leakage
current—the main contributor to input bias current
with conventional monolithic FETs. This reduces
input bias current by a factor of 10 to 100. Very low
input bias current can be achieved without resorting to
small-geometry FETs or CMOS designs which can
suffer from much larger offset voltage, voltage noise,
drift, and poor power supply rejection.
The OPA129's special pinout eliminates leakage cur-
rent that occurs with other op amps. Pins 1 and 4 have
no internal connection, allowing circuit board guard
traces—even with the surface-mount package version.
OPA129 is available in 8-pin DIP and SO-8 packages,
specified for operation from –40°C to +85°C.
–In
2
3
+In
Noise-Free
Cascode
6
Output
30kΩ
30kΩ
5
V–
Simplified Circuit
Difet
®
Burr-Brown Corp.
International Airport Industrial Park • Mailing Address: PO Box 11400
Tel: (520) 746-1111 • Twx: 910-952-1111 • Cable: BBRCORP •
• Tucson, AZ 85734 • Street Address: 6730 S. Tucson Blvd. • Tucson, AZ 85706
Telex: 066-6491 • FAX: (520) 889-1510 • Immediate Product Info: (800) 548-6132
©
1994 Burr-Brown Corporation
PDS-1195A
Printed in U.S.A. July, 1994

OPA129U Related Products

OPA129U OPA129UB OPA129P OPA129PB
Description ultra-low bias current difet operational amplifier ultra-low bias current difet operational amplifier ultra-low bias current difet operational amplifier ultra-low bias current difet operational amplifier
Is it Rohs certified? incompatible incompatible incompatible incompatible
Maker Burr-Brown Burr-Brown Burr-Brown Burr-Brown
package instruction SO-8 SO-8 PLASTIC, DIP-8 PLASTIC, DIP-8
Reach Compliance Code unknown unknown unknown unknown
Amplifier type OPERATIONAL AMPLIFIER OPERATIONAL AMPLIFIER OPERATIONAL AMPLIFIER OPERATIONAL AMPLIFIER
Architecture VOLTAGE-FEEDBACK VOLTAGE-FEEDBACK VOLTAGE-FEEDBACK VOLTAGE-FEEDBACK
Maximum average bias current (IIB) 2.5e-7 µA 1e-7 µA 2.5e-7 µA 1e-7 µA
Minimum Common Mode Rejection Ratio 80 dB 80 dB 80 dB 80 dB
Nominal Common Mode Rejection Ratio 118 dB 118 dB 118 dB 118 dB
frequency compensation YES YES YES YES
Maximum input offset voltage 5000 µV 2000 µV 5000 µV 2000 µV
JESD-30 code R-PDSO-G8 R-PDSO-G8 R-PDIP-T8 R-PDIP-T8
JESD-609 code e0 e0 e0 e0
low-bias YES YES YES YES
low-dissonance NO NO NO NO
micropower NO NO NO NO
Negative supply voltage upper limit -18 V -18 V -18 V -18 V
Nominal Negative Supply Voltage (Vsup) -15 V -15 V -15 V -15 V
Number of functions 1 1 1 1
Number of terminals 8 8 8 8
Maximum operating temperature 85 °C 85 °C 85 °C 85 °C
Minimum operating temperature -40 °C -40 °C -40 °C -40 °C
Package body material PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY
encapsulated code SOP SOP DIP DIP
Encapsulate equivalent code SOP8,.25 SOP8,.25 DIP8,.3 DIP8,.3
Package shape RECTANGULAR RECTANGULAR RECTANGULAR RECTANGULAR
Package form SMALL OUTLINE SMALL OUTLINE IN-LINE IN-LINE
power NO NO NO NO
power supply +-15 V +-15 V +-15 V +-15 V
Programmable power NO NO NO NO
Certification status Not Qualified Not Qualified Not Qualified Not Qualified
minimum slew rate 1 V/us 1 V/us 1 V/us 1 V/us
Nominal slew rate 2.5 V/us 2.5 V/us 2.5 V/us 2.5 V/us
Supply voltage upper limit 18 V 18 V 18 V 18 V
Nominal supply voltage (Vsup) 15 V 15 V 15 V 15 V
surface mount YES YES NO NO
technology BIPOLAR BIPOLAR BIPOLAR BIPOLAR
Temperature level INDUSTRIAL INDUSTRIAL INDUSTRIAL INDUSTRIAL
Terminal surface Tin/Lead (Sn/Pb) Tin/Lead (Sn/Pb) Tin/Lead (Sn/Pb) Tin/Lead (Sn/Pb)
Terminal form GULL WING GULL WING THROUGH-HOLE THROUGH-HOLE
Terminal pitch 1.27 mm 1.27 mm 2.54 mm 2.54 mm
Terminal location DUAL DUAL DUAL DUAL
Nominal Uniform Gain Bandwidth 1000 kHz 1000 kHz 1000 kHz 1000 kHz
Minimum voltage gain 50118.7 50118.7 50118.7 50118.7
broadband NO NO NO NO

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Index Files: 22  1075  859  848  1566  1  22  18  32  45 
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