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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：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：Through Hole
- Package / Case：8-DIP (0.300", 7.62mm)
- Supplier Device Package：8-PDIP
- -3db Bandwidth：600 kHz
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Overview
The INA121P is a FET-input, low power instrumentation amplifier manufactured by Texas Instruments. It features a versatile three-op amp design and offers excellent accuracy with a maximum input offset voltage of 500 µV. The device operates on a single supply voltage ranging from 4.5 V to 36 V or dual supplies of ±2.25 V to ±18 V. Key electrical parameters include a gain bandwidth product of 0.6 MHz and a slew rate of 0.7 V/µs. Each channel consumes 450 µA of current. It is housed in an 8-pin DIP package.
Feature Summary
- FET-input architecture for high input impedance
- Low power consumption suitable for battery applications
- Versatile three-op amp topology for flexible gain configuration
Applications
- Precision sensor signal conditioning
- Medical instrumentation
- Industrial process control systems
Procurement Notes
Verify the specific suffix 'P' indicates the through-hole DIP-8 package variant when ordering. Confirm that the manufacturer is Texas Instruments, as previous iterations may have been produced under Burr-Brown. Ensure the component meets the required operating temperature range of -40°C to +85°C for your specific application environment before finalizing procurement.
Selection Notes
Select this component when high input impedance and low power are critical requirements. The fixed gain resistor network allows for easy setup without external precision resistors for gains greater than one. Consider the 500 µV max offset voltage specification if DC accuracy is paramount. Compare against other instrumentation amplifiers if higher bandwidth or lower noise is needed.
Part Context
This part belongs to the INA12x family of instrumentation amplifiers, which are designed for general-purpose use. The 'P' suffix specifically denotes the plastic dual in-line package (DIP) format, distinguishing it from surface-mount variants like the UA or PWR packages within the same functional family.
Replacement Considerations
Public confirmed substitute part numbers include INA121UA and INA121PA. Verify pin compatibility and package dimensions when substituting between DIP and SOIC formats.
