Overview
The LM4040A20IDBZTG4 is a precision micropower shunt voltage reference produced by Texas Instruments. This component is part of the LM4040 series, known for its high precision, low noise, and low temperature coefficient. The LM4040A20IDBZTG4 specifically provides a fixed output voltage of 2.048V, making it suitable for a wide range of applications requiring stable voltage references.
Key Specifications
| Parameter | Value | Unit | Conditions |
|---|---|---|---|
| Output Voltage | 2.048 | V | - |
| Output Voltage Tolerance (A Grade) | ±0.1% | - | - |
| Temperature Coefficient (A Grade) | ±100 ppm/°C | - | - |
| Minimum Cathode Current | 45 | μA | 25°C |
| Maximum Operating Current | 15 | mA | - |
| Operating Temperature Range | -40°C to 125°C | - | - |
| Output Noise | 35 μVRMS (typical) | - | - |
| Package Type | TO-236-3, SC-59, SOT-23-3 | - | - |
Key Features
- Fixed output voltage of 2.048V with tight output tolerances and low temperature coefficient.
- Low output noise: 35 μVRMS typical.
- Wide operating current range: 45 μA typical to 15 mA.
- Stable with all capacitive loads; no output capacitor required.
- Available in extended temperature range: –40°C to 125°C.
- Space-saving packages: SC-70 and SOT-23-3.
- Low dynamic impedance and low temperature coefficient for stable output voltage over a wide range of operating currents and temperatures.
Applications
- Portable applications due to low power consumption and small form factor.
- Automotive and industrial applications requiring high precision and stability over a wide temperature range.
- Medical devices, such as blood glucose monitors and other battery-operated medical equipment.
- Test and measurement equipment, including automated test equipment and analytic instrumentation.
- Hybrid Electric Vehicles (HEVs) and Electric Vehicles (EVs) for precise system diagnostics.
Q & A
- What is the output voltage of the LM4040A20IDBZTG4?
The output voltage of the LM4040A20IDBZTG4 is 2.048V.
- What is the temperature coefficient of the LM4040A20IDBZTG4?
The temperature coefficient of the LM4040A20IDBZTG4 is ±100 ppm/°C for the A grade.
- What is the minimum cathode current required for the LM4040A20IDBZTG4?
The minimum cathode current required is 45 μA at 25°C.
- Does the LM4040A20IDBZTG4 require an external capacitor for operation?
No, the LM4040A20IDBZTG4 is stable with all capacitive loads and does not require an external capacitor.
- What are the available package types for the LM4040A20IDBZTG4?
The LM4040A20IDBZTG4 is available in TO-236-3, SC-59, and SOT-23-3 packages.
- What is the operating temperature range of the LM4040A20IDBZTG4?
The operating temperature range is –40°C to 125°C.
- What are some typical applications of the LM4040A20IDBZTG4?
Typical applications include portable devices, automotive and industrial systems, medical devices, and test and measurement equipment.
- How does the LM4040A20IDBZTG4 achieve its high precision?
The LM4040A20IDBZTG4 uses fuse and Zener-zap reverse breakdown voltage trim during wafer sort to achieve high precision.
- What is the maximum operating current of the LM4040A20IDBZTG4?
The maximum operating current is 15 mA.
- What is the output noise of the LM4040A20IDBZTG4?
The output noise is 35 μVRMS typical.
