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Product Detailed Parameters
- Description：IC INST AMP 1 CIRCUIT 8DIP
- Series：-
- Mfr：Texas Instruments
- Package：Tube
- Amplifier Type：Instrumentation
- Number of Circuits：1
- Output Type：-
- Slew Rate：4V/µs
- Gain Bandwidth Product：-
- Current - Input Bias：2 nA
- Voltage - Input Offset：25 µV
- Current - Supply：700µA
- Current - Output / Channel：15 mA
- Voltage - Supply Span (Min)：4.5 V
- Voltage - Supply Span (Max)：36 V
- Operating Temperature：-40°C ~ 85°C
- Grade：-
- Qualification：-
- Mounting Type：Through Hole
- Package / Case：8-DIP (0.300", 7.62mm)
- Supplier Device Package：8-PDIP
- -3db Bandwidth：1.3 MHz
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Overview
The INA129PA is a precision, low-power instrumentation amplifier manufactured by Texas Instruments. It features a single channel with a 3dB bandwidth of 1.3 MHz and a slew rate of 4 V/us. Key electrical specifications include a common-mode rejection ratio of 113 dB, input bias current of 50 nA, and input offset voltage of 25 uV. It operates on supply voltages ranging from 4.5 V to 36 V with a typical operating current of 2 mA. The device supports gains from 1 V/V to 10,000 V/V and is housed in an 8-pin CDIP package.
Feature Summary
- Designed for harsh environment applications requiring high precision
- Low power consumption suitable for battery-operated systems
- High common-mode rejection ratio for accurate signal conditioning
Applications
- Industrial process control sensor interfaces
- Medical equipment signal amplification
- Strain gauge and bridge circuit measurements
- Photodiode preamplifier circuits
- Data acquisition system front-ends
Procurement Notes
Verify the specific suffix 'PA' against the official manufacturer datasheet to confirm package type and temperature range. Ensure compatibility with existing PCB footprints for the CDIP-8 package. Check for obsolescence status as some variants may be nearing end-of-life.
Selection Notes
Select this component when high accuracy and low power are required simultaneously. Compare input offset voltage and drift requirements against other instrumentation amplifiers. Verify that the gain range meets the application needs without external resistor trimming if possible.
Part Context
The INA129 belongs to the INA129 series of instrumentation amplifiers from Texas Instruments. This series is known for providing excellent DC performance and ease of use in precision measurement applications. The PA suffix typically denotes a plastic DIP package variant within this product family.
Replacement Considerations
Official substitutes within the same family include INA128 and INA129UA. Verify pin compatibility and electrical parameter equivalence before substitution. Consult the manufacturer's replacement guide for qualified alternatives.
FAQ
What is the maximum gain achievable with the INA129PA?
The INA129PA supports a gain range from 1 V/V to 10,000 V/V, determined by a single external resistor.
What is the input bias current specification for this device?
The input bias current is specified at 50 nA, which helps minimize errors in high-impedance source applications.
