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Product Detailed Parameters
- Description：IC VREF SHUNT 0.5% SOT23-3
- Series：-
- Mfr：Texas Instruments
- Package：Tape & Reel (TR),Cut Tape (CT)
- Output Type：Fixed
- Voltage - Output (Min/Fixed)：4.096V
- Current - Output：15 mA
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Package / Case：TO-236-3, SC-59, SOT-23-3
- Supplier Device Package：SOT-23-3
- Grade：-
- Qualification：-
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Overview
The LM4040CIM3-4.1 is a precision micropower shunt voltage reference with a nominal reverse breakdown voltage of 4.096 V, housed in a 3-pin SOT-23 package. It features an initial output voltage tolerance of ±1% at 25°C and operates within an industrial temperature range of -40°C to +85°C. The device requires a minimum operating current of 68 μA and supports a maximum current of 15 mA. Key electrical characteristics include a maximum temperature coefficient of 150 ppm/°C and a typical wideband noise of 35 μVrms over the 10 Hz to 10 kHz frequency band.
Feature Summary
- Eliminates the need for external stabilizing capacitors while ensuring stability with any capacitive load
- Utilizes fuse and Zener-zap reverse breakdown voltage trim during wafer sort to ensure high accuracy
- Incorporates bandgap reference temperature drift curvature correction for stable performance across temperatures
Applications
- Portable, battery-powered equipment
- Data acquisition systems
- Instrumentation
- Process controls
- Precision audio components
Procurement Notes
Verify the specific suffix 'CIM3' corresponds to the C-grade tolerance (±1%) and industrial temperature range (-40°C to +85°C) in the SOT-23 package. Confirm that the 4.1 designation aligns with the 4.096 V nominal voltage specification. Ensure compatibility with the required shunt current limits of 68 μA minimum and 15 mA maximum for the intended circuit design.
Selection Notes
Select this component when space-constrained designs require a precise shunt reference without external compensation capacitors. The C-grade offers a balance of cost and accuracy for general instrumentation. Verify that the application's thermal environment remains within the specified industrial range to maintain the guaranteed 150 ppm/°C temperature coefficient performance.
Part Context
This part belongs to the LM4040-N family of precision micropower shunt voltage references from Texas Instruments. The family provides fixed reverse breakdown voltages including 2.048 V, 2.5 V, 3 V, 4.096 V, 5 V, 8.192 V, and 10 V. The LM4040-N-Q1 variant offers automotive qualification, while standard versions serve industrial and commercial applications in compact surface-mount packages like SOT-23 and SC70.
Replacement Considerations
LM4040AIM3-4.1: Higher A-grade tolerance (±0.1%).
FAQ
Does the LM4040CIM3-4.1 require an output capacitor for stability?
No, the advanced design eliminates the need for an external stabilizing capacitor while ensuring stability with any capacitive load.
What is the minimum operating current for the 4.096 V version?
The minimum operating current is 68 μA at 25°C.
