Overview
The LM4040A20IDBZRG4 is a precision micropower shunt voltage reference from Texas Instruments. This device is part of the LM4040 series, known for its versatility and ease of use across a wide range of applications. The LM4040A20IDBZRG4 offers a fixed output voltage of 2.048V and is characterized by its tight output tolerances and low temperature coefficient, making it an ideal choice for applications requiring stable and accurate voltage references.
Key Specifications
| Parameter | Test Conditions | Unit | Min | Typ | Max |
|---|---|---|---|---|---|
| Reverse Breakdown Voltage (VZ) | IZ = 100μA, 25°C | V | 2.048 | 2.048 | 2.048 |
| Reverse Breakdown Voltage Tolerance (ΔVZ) | IZ = 100μA, 25°C | mV | -2 | 2 | 2 |
| Minimum Cathode Current (IZ,min) | 25°C | μA | 45 | 75 | 80 |
| Average Temperature Coefficient (αVZ) | IZ = 10mA, 25°C | ppm/°C | ±20 | ±20 | ±100 |
| Operating Temperature Range | °C | -40 | 85 | ||
| Package | SOT-23-3 | ||||
| Body Size (Nominal) | mm | 2.92 × 1.30 |
Key Features
- Fixed output voltages of 2.048V, with tight output tolerances and low temperature coefficient (maximum 0.1% for A grade, 100ppm/°C).
- Low output noise: 35μVRMS typical.
- Wide operating current range: 45μA typical to 15mA.
- Stable with all capacitive loads; no output capacitor required.
- Available in extended temperature range: –40°C to 125°C.
- Space-saving SC-70 and SOT-23-3 packages.
Applications
- Data-Acquisition Systems.
- Energy Infrastructure.
- Analog Input Module.
- Field Transmitters.
- Precision Audio.
- Automotive Electronics.
Q & A
- What is the output voltage of the LM4040A20IDBZRG4? The output voltage is 2.048V.
- What is the temperature coefficient of the LM4040A20IDBZRG4? The temperature coefficient is ±100ppm/°C for the A grade.
- What is the minimum cathode current required for the LM4040A20IDBZRG4? The minimum cathode current is 45μA.
- Does the LM4040A20IDBZRG4 require an output capacitor? No, it is stable with all capacitive loads and does not require an output capacitor.
- What are the available package options for the LM4040A20IDBZRG4? The device is available in SOT-23-3 and SC-70 packages.
- What is the operating temperature range for the LM4040A20IDBZRG4? The operating temperature range is –40°C to 85°C.
- What are some typical applications of the LM4040A20IDBZRG4? Typical applications include data-acquisition systems, energy infrastructure, analog input modules, field transmitters, precision audio, and automotive electronics.
- How much noise does the LM4040A20IDBZRG4 produce? The device produces low output noise, typically 35μVRMS.
- What is the maximum operating current for the LM4040A20IDBZRG4? The maximum operating current is 15mA.
- Is the LM4040A20IDBZRG4 suitable for portable applications? Yes, it is suitable for portable applications due to its low current requirements and space-saving packages).
