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Product Detailed Parameters
- Description：IC OPAMP 1 CIRCUIT SOT-23-5
- Series：LM321A
- Mfr：3PEAK
- Package：Tape & Reel (TR),Cut Tape (CT)
- Amplifier Type：Standard
- Number of Circuits：1
- Output Type：Single Ended, Rail-to-Rail
- Slew Rate：0.5V/µs
- Gain Bandwidth Product：900 kHz
- Current - Input Bias：60 pA
- Voltage - Input Offset：100 µV
- Current - Supply：150µA
- Current - Output / Channel：30 mA
- Voltage - Supply Span (Min)：2.5 V
- Voltage - Supply Span (Max)：6 V
- Operating Temperature：-40°C ~ 125°C
- Grade：-
- Qualification：-
- Mounting Type：Surface Mount
- Package / Case：SC-74A, SOT-753
- Supplier Device Package：SOT-23-5
- -3db Bandwidth：-
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Overview
The LM321A-TR is a single-channel, general-purpose operational amplifier manufactured by 3PEAK. It features a wide supply voltage range of 3V to 36V for single-supply or ±1.5V to ±18V for dual-supply operation. The device offers a gain-bandwidth product of 1.2MHz and a typical quiescent current of 240µA. Key electrical specifications include a maximum input offset voltage of 5mV and a slew rate of 0.7V/µs. It operates within a temperature range of -40°C to +125°C and is housed in an SOT-23-5 surface-mount package.
Feature Summary
- Supports wide single and dual power supply voltages up to 36V
- Micro-power consumption with low quiescent current
- Rail-to-rail output capability for maximum dynamic range
- Internal frequency compensation ensures stability
Applications
- Battery-powered portable devices
- Industrial sensor signal conditioning
- Active filtering circuits
- General-purpose analog signal processing
Procurement Notes
Verify the specific suffix 'TR' indicates tape-and-reel packaging when sourcing. Confirm the manufacturer is 3PEAK, as 'LM321' is a legacy designation used by multiple vendors. Ensure the operating temperature grade matches the application requirements, as industrial grades differ from commercial variants. Cross-reference pinouts if replacing components from other manufacturers.
Selection Notes
Select this component for applications requiring high voltage tolerance with low power consumption. The rail-to-rail output allows for better utilization of low-voltage supplies compared to standard op-amps. Consider the 1.2MHz bandwidth for moderate-speed signal processing tasks. Verify that the SOT-23-5 thermal performance meets the system's dissipation needs.
Part Context
This part belongs to the LM321 family of micro-power operational amplifiers produced by 3PEAK. It serves as a modern replacement for legacy single-op-amp designs, offering improved efficiency and wider voltage compatibility. The series is designed for cost-sensitive consumer and industrial electronics where space and power are constrained.
Replacement Considerations
- LM321ZN5G/TR
- LM321B-TR
FAQ
What is the maximum supply voltage for the LM321A-TR?
The device supports a maximum single supply voltage of 36V or a dual supply of ±18V.
Does the LM321A-TR have rail-to-rail output?
Yes, the LM321A-TR features rail-to-rail output capability, allowing the output swing to reach close to both supply rails.
