Overview
The LM4041D12QDBZR is a precision micropower shunt voltage reference from Texas Instruments. This component is part of the LM4041 series, known for its versatility and ease of use across a wide array of applications. The LM4041D12QDBZR offers a fixed output voltage of 1.225V with tight output tolerances and a low temperature coefficient, making it suitable for applications requiring stable voltage references.
The device is available in various packages, including SC-70, SOT-23-3, and TO-92, catering to different design needs. It operates over an extended temperature range of –40°C to 125°C, making it suitable for harsh environments. The LM4041D12QDBZR does not require external capacitors for operation and is stable with all capacitive loads, enhancing its reliability and simplicity in design.
Key Specifications
| Parameter | Test Conditions | Unit | Min | Max | |
|---|---|---|---|---|---|
| Reverse Breakdown Voltage (VZ) | IZ = 100μA, 25°C | V | 1.225 | 1.225 | 1.225 |
| Reverse Breakdown Voltage Tolerance | IZ = 100μA, 25°C | mV | -12 | - | 12 |
| Minimum Cathode Current (IZ,min) | 25°C | μA | 45 | 75 | 80 |
| Average Temperature Coefficient of Reverse Breakdown Voltage (αVZ) | IZ = 10mA, 25°C | ppm/°C | ±20 | - | ±150 |
| Operating Temperature Range (TA) | - | °C | -40 | - | 125 |
| Continuous Cathode Voltage (VZ) | - | V | - | - | 15 |
| Continuous Cathode Current (IZ) | - | mA | -10 | - | 25 |
Key Features
- Fixed and Adjustable Outputs: The LM4041D12QDBZR offers a fixed output voltage of 1.225V, and an adjustable version allows the output to be set between 1.225V and 10V using an external resistor divider.
- Tight Output Tolerances: The device features tight output tolerances, with a maximum tolerance of 1.0% for the D grade.
- Low Temperature Coefficient: It has a low temperature coefficient, ensuring stable output voltage over a wide range of operating temperatures.
- Low Output Noise: The LM4041D12QDBZR has a low output noise of 20μVRMS (typical).
- Wide Operating Current Range: The device operates with a wide cathode current range from 45μA (typical) to 12mA.
- No External Capacitor Required: It is stable with all capacitive loads and does not require an external capacitor for operation.
- Extended Temperature Range: The LM4041D12QDBZR is characterized for operation over an ambient temperature range of –40°C to 125°C.
Applications
- Data-Acquisition Systems: Used for precise voltage referencing in data acquisition systems.
- Power Supplies and Power-Supply Monitors: Employed in power supply designs to ensure stable voltage outputs.
- Instrumentation and Test Equipment: Utilized in various instrumentation and test equipment for accurate voltage referencing.
- Process Control: Used in process control systems to maintain precise voltage levels.
- Precision Audio: Applied in precision audio equipment for stable voltage references.
- Automotive Electronics: Suitable for automotive applications due to its extended temperature range.
- Energy Management/Metering: Used in energy management and metering systems for accurate voltage measurements.
- Battery-Powered Equipment: Ideal for battery-powered devices due to its low power consumption.
Q & A
- What is the fixed output voltage of the LM4041D12QDBZR?
The fixed output voltage of the LM4041D12QDBZR is 1.225V.
- Can the output voltage of the LM4041D12QDBZR be adjusted?
- What is the temperature coefficient of the LM4041D12QDBZR?
The average temperature coefficient of the reverse breakdown voltage is ±20 ppm/°C for the D grade.
- What is the minimum cathode current required for the LM4041D12QDBZR?
The minimum cathode current (IZ,min) is 45μA (typical).
- Does the LM4041D12QDBZR require an external capacitor for operation?
No, the LM4041D12QDBZR is stable with all capacitive loads and does not require an external capacitor for operation.
- What is the operating temperature range of the LM4041D12QDBZR?
The operating temperature range is –40°C to 125°C.
- What are the typical applications of the LM4041D12QDBZR?
The LM4041D12QDBZR is used in data-acquisition systems, power supplies, instrumentation and test equipment, process control, precision audio, automotive electronics, energy management/metering, and battery-powered equipment.
- What is the maximum continuous cathode voltage for the LM4041D12QDBZR?
The maximum continuous cathode voltage is 15V.
- What is the maximum continuous cathode current for the LM4041D12QDBZR?
The maximum continuous cathode current is 25mA.
- What is the output noise of the LM4041D12QDBZR?
The output noise is 20μVRMS (typical).
