Overview
The LM4041DIDBZR is a precision micropower shunt voltage reference IC produced by Texas Instruments. This device is designed to provide a stable and accurate voltage reference with minimal power consumption. It is available in various packages, including the SOT-23-3 package, making it suitable for a wide range of applications where space is limited.
The LM4041 series includes fixed and adjustable reverse breakdown voltage options, ensuring flexibility in design. The device features a bandgap reference with temperature drift curvature correction, which ensures stable operation over a wide temperature range.
Key Specifications
| Parameter | Conditions | Typical | Minimum | Maximum | Unit |
|---|---|---|---|---|---|
| Reverse Breakdown Voltage (VZ) | IZ = 100 μA, 25°C | 1.225 | 1.219 | 1.231 | V |
| Reverse Breakdown Voltage Tolerance | IZ = 100 μA, 25°C | - | -6 | 6 | mV |
| Minimum Cathode Current (IZ,min) | 25°C | 60 | 45 | 80 | μA |
| Maximum Cathode Current (IZ,max) | - | - | - | 12 | mA |
| Average Temperature Coefficient of Reverse Breakdown Voltage | IZ = 10 mA, 25°C | - | -20 | 20 | ppm/°C |
| Reverse Dynamic Impedance (ZR) | IR = 1 mA, f = 120 Hz, IAC = 0.1 IR | - | - | 2 | Ω |
| Wideband Noise Voltage (eN) | 10 Hz ≤ f ≤ 10 kHz, IR = 100 μA | 20 | - | - | μVrms |
| Long-term Stability (ΔVR) | t = 1000 hrs, IR = 100 μA, T = 25°C ± 0.1°C | - | - | 120 | ppm |
| Thermal Hysteresis (VHYST) | ΔT = -40°C to +125°C | - | - | 0.08% | - |
Key Features
- Precision Voltage Reference: The LM4041DIDBZR offers a precise voltage reference with an output voltage tolerance of ±0.1% (A grade) at 25°C.
- Low Power Consumption: The device operates with a minimum current of 60 μA and a maximum current of 12 mA, making it suitable for low-power applications.
- Stable Over Temperature: It features bandgap reference temperature drift curvature correction, ensuring stable operation over a wide temperature range (-40°C to +125°C).
- No Output Capacitor Required: The LM4041DIDBZR does not require an external output capacitor, simplifying the circuit design.
- Adjustable Output Voltage: The adjustable version allows the output voltage to be set between 1.24V and 10V.
- Low Dynamic Impedance: The device has low dynamic impedance, ensuring stable reverse breakdown voltage accuracy over a range of operating temperatures and currents).
- Low Noise: It features low wideband noise voltage of 20 μVrms (10 Hz to 10 kHz)).
- Compact Packages: Available in small packages such as SOT-23, TO-92, and SC70, making it ideal for space-constrained designs).
Applications
- Power Supply Regulation: The LM4041DIDBZR can be used as a reference voltage in power supply circuits to ensure stable output voltages).
- Instrumentation and Measurement: Its high precision and stability make it suitable for use in measurement and instrumentation applications).
- Industrial Control Systems: It can be used in industrial control systems where accurate voltage references are critical).
- Automotive Systems: The device is qualified for automotive use, making it suitable for various automotive applications).
- Consumer Electronics: Its low power consumption and compact size make it a good fit for consumer electronics where space and power efficiency are important).
Q & A
- What is the typical reverse breakdown voltage of the LM4041DIDBZR?
The typical reverse breakdown voltage is 1.225V).
- What is the minimum operating current for the LM4041DIDBZR?
The minimum operating current is 60 μA).
- Does the LM4041DIDBZR require an external output capacitor?
No, it does not require an external output capacitor).
- What is the maximum cathode current for the LM4041DIDBZR?
The maximum cathode current is 12 mA).
- What is the temperature range for the LM4041DIDBZR?
The operating temperature range is -40°C to +125°C).
- How does the LM4041DIDBZR ensure stable operation over temperature?
It features bandgap reference temperature drift curvature correction, ensuring stable operation over a wide temperature range).
- What is the wideband noise voltage of the LM4041DIDBZR?
The wideband noise voltage is 20 μVrms (10 Hz to 10 kHz)).
- Can the LM4041DIDBZR be used in automotive applications?
Yes, it is qualified for automotive use).
- What are the available packages for the LM4041DIDBZR?
It is available in SOT-23, TO-92, and SC70 packages).
- How does the adjustable version of the LM4041DIDBZR set the output voltage?
The adjustable version allows the output voltage to be set between 1.24V and 10V using external resistors).
