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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：0.7V/µs
- Gain Bandwidth Product：-
- Current - Input Bias：500 pA
- Voltage - Input Offset：10 µV
- Current - Supply：2.2mA
- Current - Output / Channel：20 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：70 kHz
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Overview
The INA131BPG4 is a precision instrumentation amplifier manufactured by Texas Instruments, featuring a fixed gain of 100 V/V. It utilizes a three-op-amp architecture to deliver high accuracy and low cost for general-purpose applications. The device operates within a supply voltage range of ±2.25V to ±18V (or 4.5V to 36V single supply). Key electrical specifications include a maximum input offset voltage of 125µV for the B-grade variant, a slew rate of 0.7V/µs, and a bandwidth of approximately 70kHz. It is housed in an 8-pin PDIP package.
Feature Summary
- Fixed unity-gain resistor network provides a precise gain of 100 without external components
- Three-op-amp topology ensures high common-mode rejection ratio and excellent DC accuracy
- Low-cost design suitable for general-purpose signal conditioning tasks
Applications
- Industrial process control sensor interfaces
- Medical equipment signal amplification
- Data acquisition systems requiring fixed gain stages
Procurement Notes
Verify the specific grade suffix (e.g., 'B' for 125µV offset) against application requirements. Confirm the package type is PDIP-8 as indicated by the PG4 suffix. Check for end-of-life notifications or discontinuation status via official Texas Instruments channels before finalizing procurement plans.
Selection Notes
Select this component when a fixed gain of 100 is required without external resistors. Compare offset voltage specifications between INA131A and INA131B grades based on precision needs. Ensure the operating bandwidth of ~70kHz meets signal frequency requirements. Verify that the bipolar supply capability aligns with system power constraints.
Part Context
The INA131BPG4 belongs to the INA131 family of precision instrumentation amplifiers from Texas Instruments. It is part of a series designed for cost-sensitive applications where fixed gain performance is sufficient. The PG4 suffix denotes the lead-free and RoHS-compliant PDIP-8 packaging variant.
Replacement Considerations
The INA131AP serves as a lower-offset alternative within the same family. For adjustable gain requirements, consider the INA141 series. Verify pin compatibility and gain stability when substituting with other instrumentation amplifiers.
