Overview
The LM4041BIDBZR is a precision micropower shunt voltage reference produced by Texas Instruments. This component is designed to provide a stable and accurate voltage reference, making it suitable for a wide range of applications. The LM4041 series is known for its low dynamic impedance, low noise, and low temperature coefficient, ensuring a stable output voltage over various operating currents and temperatures.
The device is available in both fixed (1.225V nominal) and adjustable versions, with the adjustable version allowing the output to be set between 1.225V and 10V using an external resistor divider. It is packaged in space-saving SC-70 and SOT-23-3 packages, as well as a TO-92 package for through-hole applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Output Voltage Tolerance (A grade, 25°C) | ±0.1% | % |
| Low Output Noise (10 Hz to 10kHz) | 20 μVrms | μVrms |
| Minimum Operating Current | 60 μA | μA |
| Maximum Operating Current | 12 mA | mA |
| Industrial Temperature Range (LM4041xI) | −40°C to +85°C | °C |
| Extended Temperature Range (LM4041xQ) | −40°C to +125°C | °C |
| Low Temperature Coefficient | 100 ppm/°C (max) | ppm/°C |
| Continuous Cathode Voltage | 15 V | V |
| Package Thermal Impedance (DBZ package) | 206 °C/W | °C/W |
Key Features
- Low dynamic impedance and low noise to ensure stable output voltage.
- Low temperature coefficient of 100 ppm/°C (max) for stable operation over a wide temperature range.
- No external capacitors required for operation; stable with all capacitive loads.
- Available in fixed (1.225V nominal) and adjustable versions (1.225V to 10V).
- Space-saving SC-70 and SOT-23-3 packages, and TO-92 package for through-hole applications.
- Minimum operating current of 60 μA and maximum operating current of 12 mA.
- Four output voltage tolerances ranging from 0.1% (A grade) to 1% (D grade).
Applications
- Portable, battery-powered equipment.
- Data acquisition systems.
- Instrumentation.
- Process control.
- Energy management.
- Automotive applications.
- Precision audio components.
Q & A
- What is the nominal output voltage of the fixed version of the LM4041?
The nominal output voltage of the fixed version is 1.225V.
- What is the range of output voltage for the adjustable version of the LM4041?
The adjustable version can be set to an output voltage between 1.225V and 10V using an external resistor divider.
- What is the minimum operating current of the LM4041?
The minimum operating current is 60 μA.
- What is the maximum operating current of the LM4041?
The maximum operating current is 12 mA.
- What are the available temperature ranges for the LM4041?
The LM4041xI is characterized for operation over an ambient temperature range of –40°C to 85°C, and the LM4041xQ is characterized for operation over an ambient temperature range of –40°C to 125°C.
- Does the LM4041 require external capacitors for operation?
No, the LM4041 does not require external capacitors for operation and is stable with all capacitive loads.
- What are the typical packages available for the LM4041?
The LM4041 is available in SC-70, SOT-23-3, and TO-92 packages.
- What is the low temperature coefficient of the LM4041?
The low temperature coefficient is 100 ppm/°C (max).
- What are some common applications of the LM4041?
Common applications include portable, battery-powered equipment, data acquisition systems, instrumentation, process control, energy management, automotive applications, and precision audio components.
- How does the LM4041 ensure stable output voltage accuracy?
The LM4041 uses fuse and Zener-zap reverse breakdown voltage trim during wafer sort, and it features bandgap reference temperature drift curvature correction and low dynamic impedance to ensure stable output voltage accuracy over a wide range of operating temperatures and currents.
