Overview
The LM4041DQDBZRG4 is a precision micropower shunt voltage reference produced by Texas Instruments. This component is part of the LM4041 series, which is known for its versatility and ease of use. The LM4041DQDBZRG4 offers a fixed output voltage of 1.225V and is also available in an adjustable version that can be set between 1.225V and 10V using an external resistor divider. It is designed to operate over a wide range of temperatures and currents, making it suitable for various applications.
Key Specifications
| Parameter | Test Conditions | Unit | MIN | TYP | MAX |
|---|---|---|---|---|---|
| Reverse Breakdown Voltage (VZ) | IZ = 100 μA, 25°C | V | 1.225 | 1.225 | 1.225 |
| Reverse Breakdown Voltage Tolerance | IZ = 100 μA, 25°C | mV | -12 | 0 | 12 |
| Minimum Cathode Current (IZ,min) | 25°C | μA | 45 | 75 | 80 |
| Average Temperature Coefficient of Reverse Breakdown Voltage (αVZ) | IZ = 10 mA, 25°C | ppm/°C | ±20 | ±20 | ±150 |
| Operating Temperature Range | °C | -40 | 125 | ||
| Continuous Cathode Voltage (VZ) | V | 15 | |||
| Continuous Cathode Current (IZ) | mA | -10 | 25 |
Key Features
- Tight Output Tolerances and Low Temperature Coefficient: Maximum 1.0% tolerance and 150 ppm/°C temperature coefficient for the D grade.
- Low Output Noise: Typical output noise of 20 μVRMS.
- Wide Operating Current Range: From 45 μA to 12 mA.
- Stable with All Capacitive Loads: No external capacitor required for operation.
- Adjustable Output Voltage: Adjustable version can be set between 1.225 V and 10 V using an external resistor divider.
- Low Dynamic Impedance: Ensures stable output voltage over a wide range of operating currents and temperatures.
Applications
- Data-Acquisition Systems
- Power Supplies and Power-Supply Monitors
- Instrumentation and Test Equipment
- Process Control
- Precision Audio
- Automotive Electronics
- Energy Management/Metering
- Battery-Powered Equipment
Q & A
- What is the nominal output voltage of the LM4041DQDBZRG4?
The nominal output voltage is 1.225 V.
- What is the temperature coefficient of the LM4041DQDBZRG4?
The temperature coefficient is ±150 ppm/°C for the D grade.
- Does the LM4041DQDBZRG4 require an external capacitor for operation?
No, it is stable with all capacitive loads and does not require an external capacitor.
- What is the operating current range of the LM4041DQDBZRG4?
The operating current range is from 45 μA to 12 mA.
- Can the output voltage of the LM4041DQDBZRG4 be adjusted?
Yes, the adjustable version can be set between 1.225 V and 10 V using an external resistor divider.
- What are the typical applications of the LM4041DQDBZRG4?
It is used in data-acquisition systems, power supplies, instrumentation, process control, precision audio, automotive electronics, energy management, and battery-powered equipment.
- What is the maximum continuous cathode voltage for the LM4041DQDBZRG4?
The maximum continuous cathode voltage is 15 V).
- What is the maximum continuous cathode current for the LM4041DQDBZRG4?
The maximum continuous cathode current is 25 mA).
- What is the operating temperature range of the LM4041DQDBZRG4?
The operating temperature range is from -40°C to 125°C).
- What is the typical output noise of the LM4041DQDBZRG4?
The typical output noise is 20 μVRMS).
