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Product Detailed Parameters
- Description：IC INST AMP 1 CIRCUIT 8SOIC
- Series：-
- Mfr：Texas Instruments
- Package：Tape & Reel (TR)
- Amplifier Type：Instrumentation
- Number of Circuits：1
- Output Type：-
- Slew Rate：0.7V/µs
- Gain Bandwidth Product：-
- Current - Input Bias：4 pA
- Voltage - Input Offset：200 µV
- Current - Supply：450µA
- Current - Output / Channel：14 mA
- Voltage - Supply Span (Min)：4.5 V
- Voltage - Supply Span (Max)：36 V
- Operating Temperature：-40°C ~ 85°C
- Grade：-
- Qualification：-
- Mounting Type：Surface Mount
- Package / Case：8-SOIC (0.154", 3.90mm Width)
- Supplier Device Package：8-SOIC
- -3db Bandwidth：5 kHz
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Overview
The INA121U/2K5G4 is a FET-input, low-power instrumentation amplifier from Texas Instruments. It features a versatile three-op amp design for excellent accuracy in small packages. Key electrical parameters include an input bias current of 4pA, input offset voltage of 200µV, and a bandwidth of 600kHz. The device operates with a slew rate of 0.7 V/µs and supports single ±18V supplies. It is housed in an 8-pin SOIC package.
Feature Summary
- FET-input architecture providing extremely low input bias current
- Low power consumption suitable for battery-operated applications
- Versatile three-op amp design ensuring high accuracy
Applications
- Precision sensor signal conditioning
- Medical instrumentation
- Industrial process control systems
Procurement Notes
Verify component status as the INA121U/2K5G4 is listed as obsolete and no longer manufactured by Texas Instruments. Confirm availability of substitute parts or alternative package types through authorized distributors before procurement planning. Ensure compatibility with existing designs if considering replacement components.
Selection Notes
Select this component for applications requiring low bias current and precision amplification. Consider the obsolete status when designing new products; evaluate modern equivalents with similar FET-input characteristics. Verify supply voltage ranges and package dimensions against PCB layout constraints to ensure mechanical fit.
Part Context
Part of the INA121 series of instrumentation amplifiers. Designed for high-accuracy applications where low power and small size are critical. The U suffix indicates an SOIC-8 package, while /2K5G4 denotes tape and reel packaging with lead-free composition.
Replacement Considerations
- INA121UA/2K5G4
- INA121U
FAQ
Is the INA121U/2K5G4 currently in production?
No, the INA121U/2K5G4 is classified as obsolete and is no longer manufactured by Texas Instruments.
What is the input bias current specification?
The input bias current is specified at 4pA, characteristic of its FET-input design.
