Overview
The LM4040D20IDBZR is a precision micropower shunt voltage reference produced by Texas Instruments. This component is part of the LM4040 series, known for its high accuracy and stability. It is available in several fixed output voltages, including 2.048V, 2.5V, 3V, 4.096V, 5V, 8.192V, and 10V. The LM4040D20IDBZR specifically offers a 2.048V output voltage with a maximum initial accuracy of 1.0% and a temperature coefficient of 150 ppm/°C, making it suitable for a wide range of applications requiring precise voltage referencing.
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 | -20 | 0 | 20 |
| Minimum Cathode Current (IZ,min) | 25°C | μA | 45 | 75 | 80 |
| Average Temperature Coefficient (αVZ) | IZ = 10mA, 25°C | ppm/°C | ±20 | ±20 | ±150 |
| Operating Temperature Range | °C | -40 | 85 | ||
| Package | SOT-23 |
Key Features
- Fixed output voltages of 2.048V, 2.5V, 3V, 4.096V, 5V, 8.192V, and 10V.
- Tight output tolerances and low temperature coefficient.
- No external capacitors required for operation; stable with all capacitive loads.
- Low dynamic impedance and low noise.
- Minimum cathode current of 45μA (typical).
- Available in space-saving SOT-23 and SC-70 packages.
- Characterized for operation over an ambient temperature range of –40°C to 85°C (or –40°C to 125°C for the Q grade).
Applications
The LM4040D20IDBZR is ideal for various applications requiring precise voltage referencing, including:
- Portable and battery-powered devices due to its low power consumption.
- Analog-to-digital converters (ADCs) and digital-to-analog converters (DACs) as a reference voltage.
- Power supply systems and voltage regulators.
- Industrial and automotive systems where stable voltage references are critical.
Q & A
- What is the output voltage of the LM4040D20IDBZR? The output voltage of the LM4040D20IDBZR is 2.048V.
- What is the maximum initial accuracy of the LM4040D20IDBZR? The maximum initial accuracy is 1.0%.
- What is the temperature coefficient of the LM4040D20IDBZR? The temperature coefficient is 150 ppm/°C.
- Does the LM4040D20IDBZR require external capacitors for operation? No, it does not require external capacitors for operation.
- What is the minimum cathode current of the LM4040D20IDBZR? The minimum cathode current is 45μA (typical).
- In what packages is the LM4040D20IDBZR available? It is available in SOT-23 and SC-70 packages.
- What is the operating temperature range of the LM4040D20IDBZR? The operating temperature range is –40°C to 85°C.
- Is the LM4040D20IDBZR suitable for portable applications? Yes, it is suitable due to its low power consumption and small package size.
- Can the LM4040D20IDBZR be used in industrial and automotive systems? Yes, it can be used in these systems due to its stable voltage reference and wide operating temperature range.
- What are some common applications of the LM4040D20IDBZR? Common applications include ADCs, DACs, power supply systems, and voltage regulators.
