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Product Detailed Parameters
- Description：IC OPAMP JFET 4 CIRCUIT DIE
- Series：-
- Mfr：Texas Instruments
- Package：Bulk
- Amplifier Type：J-FET
- Number of Circuits：4
- Output Type：-
- Slew Rate：-
- Gain Bandwidth Product：-
- Current - Input Bias：-
- Voltage - Input Offset：-
- Current - Supply：-
- Current - Output / Channel：-
- Voltage - Supply Span (Min)：-
- Voltage - Supply Span (Max)：-
- Operating Temperature：-
- Grade：-
- Qualification：-
- Mounting Type：Surface Mount
- Package / Case：Die
- Supplier Device Package：Die
- -3db Bandwidth：-
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Overview
The LF444TDA2 is a quad low-power JFET input operational amplifier manufactured by Texas Instruments. It provides four independent amplifiers in a die configuration, offering AC characteristics comparable to industry-standard LM148 devices while significantly improving input bias current performance. The device features a maximum input bias current of 50 pA and is designed for applications requiring high input impedance and low power consumption.
Feature Summary
- Quad JFET input operational amplifier architecture
- Low input bias current specification
- Die package format for custom integration
Applications
- High-impedance signal conditioning circuits
- Precision analog signal processing
- Low-power instrumentation systems
Procurement Notes
Verify the specific die revision and handling requirements before procurement. As a bare die component, specialized assembly processes are required. Confirm availability status directly with authorized distributors or Texas Instruments, as supply chain conditions may vary. Ensure compatibility with your PCB design and manufacturing capabilities for die attachment.
Selection Notes
Select this component when a quad op-amp solution with JFET inputs is required in a minimal footprint. The die form factor allows for direct integration into custom substrates or hybrid circuits. Consider thermal management and mechanical stability during design, as the absence of a standard package requires careful handling and mounting strategies compared to leaded alternatives.
Part Context
This part belongs to the LF444 series of low-power JFET input operational amplifiers. It serves as the die version of packaged variants like the LF444N or LF444CN. The series is known for providing high input impedance and low noise, making it suitable for precision analog applications where power consumption must be minimized without sacrificing performance.
Replacement Considerations
Direct pin-compatible replacements include other LF444 die variants if available. Packaged equivalents such as the LF444N offer identical electrical characteristics but require different mounting methods. Verify that any substitute maintains the same JFET input stage and low bias current specifications to ensure circuit compatibility.
