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OPA128UM, OPA129, OPA129AP

Table of contents:
Info of OPA128UM
Info of OPA129
Info of OPA129AP

OPA128UM, OPA129, OPA129AP Selling Leads, Datasheet

MFG:BB Package Cooled:CAN8 D/C:04+

OPA128UM, OPA129, OPA129AP Datasheet download

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Part Number: OPA128UM

MFG: BB

Package Cooled: CAN8

D/C: 04+

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OPA129 General Description

The OPA129 is an ultra-low bias current monolithic operational amplifier offered in an 8-pin PDIP and SO-8 package. Using advanced geometry dielectrically-isolated FET (Difet^®) inputs, this monolithic 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 current 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 to +85.

OPA129 Maximum Ratings

Power Supply Voltage ........................±18V
Differential Input Voltage.....................V to V+
Input Voltage Range .......................V to V+
Storage Temperature Range ...............40 to +125
Operating Temperature Range ..............40 to +125
Lead Temperature (soldering, 10s; SOIC 3s) ............+300
Output Short Circuit Duration⁽¹⁾ ................ Continuous
Junction Temperature (T_J) ..................... +150

NOTE: (1) Short circuit may be to power supply common at +25 ambient.

OPA129 Features

`ULTRA-LOW BIAS CURRENT: 100fA max
`LOW OFFSET: 2mV max
`LOW DRIFT: 10V/ max
`HIGH OPEN-LOOP GAIN: 94dB min
`LOW NOISE: 15nV/Hz at 10kHz
`PLASTIC DIP and SOIC PACKAGE

OPA129 Typical Application

· PHOTODETECTOR PREAMP
· CHROMATOGRAPHY
· ELECTROMETER AMPLIFIERS
· MASS SPECTROMETER
· pH PROBE AMPLIFIER
· ION GAGE MEASUREMENT

OPA129 Connection Diagram

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