Overview
The LM4041C12QDBZR from Texas Instruments is a precision micropower shunt voltage reference designed to provide a stable and accurate voltage output. This device is part of the LM4041 series, which is known for its tight output tolerances and low temperature coefficient. The LM4041C12QDBZR is particularly suited for applications requiring high precision and stability over a wide range of operating temperatures and currents.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Reverse Breakdown Voltage (VZ) | IZ = 100μA, 25°C | 1.2197 | 1.225 | 1.2303 | V |
| Reverse Breakdown Voltage Tolerance | IZ = 100μA, 25°C | -6 | - | 6 | mV |
| Minimum Cathode Current (IZ,min) | 25°C | 45 | 75 | - | μA |
| Average Temperature Coefficient of Reverse Breakdown Voltage | IZ = 10mA, 25°C | - | ±20 | - | ppm/°C |
| Wideband Noise (eN) | IZ = 100μA, VZ = VREF, 10Hz ≤ f ≤ 10kHz, 25°C | - | 20 | - | μVRMS |
| Operating Temperature Range (TA) | - | -40 | - | 125 | °C |
| Maximum Cathode Current (IZ,max) | - | - | - | 12 | mA |
Key Features
- Precision Voltage Reference: Offers a fixed output voltage of 1.225V with tight tolerances (±0.5% for the C grade) and a low temperature coefficient (100ppm/°C).
- Wide Operating Current Range: Operates with a wide range of cathode currents from 45μA to 12mA.
- Low Noise: Features low output noise of 20μVRMS (typical) over the frequency range of 10Hz to 10kHz.
- Stability with Capacitive Loads: No external capacitor is required for stability, and the device is stable with all capacitive loads.
- Compact Packaging: Available in space-saving SC-70, SOT-23-3, and TO-92 packages.
- Temperature Range: Characterized for operation over an ambient temperature range of –40°C to 125°C for the Q grade).
Applications
- Portable and Battery-Powered Equipment: Ideal for use in portable devices such as notebook computers and cell phones due to its low power consumption and compact size).
- Industrial Process Controls: Suitable for industrial applications requiring stable voltage references over a wide temperature range).
- High-Voltage Power Supplies: Can be used to provide a stable reference voltage from high-voltage power supplies).
Q & A
- What is the nominal output voltage of the LM4041C12QDBZR?
The nominal output voltage is 1.225V).
- What is the temperature coefficient of the LM4041C12QDBZR?
The temperature coefficient is ±100ppm/°C for the C grade).
- What is the minimum cathode current required for the LM4041C12QDBZR?
The minimum cathode current is 45μA (typical)).
- Does the LM4041C12QDBZR require an external capacitor for stability?
No, the device is stable with all capacitive loads and does not require an external capacitor).
- What are the available package options for the LM4041C12QDBZR?
The device is available in SC-70, SOT-23-3, and TO-92 packages).
- What is the operating temperature range for the LM4041C12QDBZR?
The operating temperature range is –40°C to 125°C for the Q grade).
- What is the maximum cathode current for the LM4041C12QDBZR?
The maximum cathode current is 12mA).
- How much noise does the LM4041C12QDBZR produce?
The device produces a typical output noise of 20μVRMS over the frequency range of 10Hz to 10kHz).
- Can the LM4041C12QDBZR be used in industrial applications?
- Is the LM4041C12QDBZR suitable for portable and battery-powered devices?
