OPA129 Datasheet PDF - Burr-Brown
| Part Number | OPA129 | |
| Description | Ultra-Low Bias Current Difet OPERATIONAL AMPLIFIER | |
| Manufacturers | Burr-Brown | |
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There is a preview and OPA129 download ( pdf file ) link at the bottom of this page. Total 7 Pages | ||
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® OPA129
Ultra-Low Bias Current Difet®
OPERATIONAL AMPLIFIER
FEATURES
q ULTRA-LOW BIAS CURRENT: 100fA max
q LOW OFFSET: 2mV max
q LOW DRIFT: 10µV/°C max
q HIGH OPEN-LOOP GAIN: 94dB min
q LOW NOISE: 15nV/√Hz at 10kHz
q PLASTIC DIP and SOIC PACKAGE
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.
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.
Difet® Burr-Brown Corp.
APPLICATIONS
q PHOTODETECTOR PREAMP
q CHROMATOGRAPHY
q ELECTROMETER AMPLIFIERS
q MASS SPECTROMETER
q pH PROBE AMPLIFIER
q ION GAGE MEASUREMENT
Substrate
8
7
V+
–In
2
3
+In Noise-Free
Cascode
30kΩ
30kΩ
6
Output
Simplified Circuit
5
V–
International Airport Industrial Park • Mailing Address: PO Box 11400 • Tucson, AZ 85734 • Street Address: 6730 S. Tucson Blvd. • Tucson, AZ 85706
Tel: (520) 746-1111 • Twx: 910-952-1111 • Cable: BBRCORP • 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
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TYPICAL PERFORMANCE CURVES (CONT)
TA = +25°C, +15VDC, unless otherwise noted.
GAIN BANDWIDTH AND SLEW RATE
vs TEMPERATURE
44
33
22
11
0
–75 –50 –25 0 25 50 75
Ambient Temperature (°C)
0
100 125
GAIN BANDWIDTH AND SLEW RATE
vs SUPPLY VOLTAGE
3
2
+Slew
–Slew
1 GBW
0
0 5 10 15
Supply Voltage (±VCC)
6
4
2
0
20
SUPPLY CURRENT vs TEMPERATURE
2
1.5
1
0.5
0
–75 –50 –25 0 25 50 75
Ambient Temperature (°C)
100 125
OPEN-LOOP GAIN, PSR AND CMR vs TEMPERATURE
130
120 AOL
CMR
110
100
PSR
90
–75
–50 –25 0 25 50 75
Ambient Temperature (°C)
100 125
LARGE SIGNAL TRANSIENT RESPONSE
10
0
–10
0 25 50
Time (µs)
SMALL SIGNAL TRANSIENT RESPONSE
80
40
0
–40
–80
0 2 4 6 8 10
Time (µs)
®
5 OPA129
Preview 5 Page |
Part DetailsOn this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for OPA129 electronic component. |
| Information | Total 7 Pages | |
| Link URL | [ Copy URL to Clipboard ] | |
| Download | [ OPA129.PDF Datasheet ] | |
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