仕様
| 属性 | 値 |
| Package / Case | Tape & Reel (TR),Cut Tape (CT) |
| Part Status | Active |
| Reference Type | Shunt |
| Output Type | Fixed |
| Voltage - Output (Min/Fixed) | 1.225V |
| Current - Output | 12 mA |
| Tolerance | ±1% |
| Temperature Coefficient | 150ppm/°C |
| Noise - 10 Hzto10k Hz | 20µVrms |
| Current - Cathode | 73 µA |
| Operating Temperature | -40°C ~ 125°C (TA) |
| Mounting Type | Surface Mount |
概要
Description
LM4041DFTA is a TI LM4041 family precision shunt voltage reference in the DFTA package. It provides a stable, low-noise reference voltage for analog circuits and microcontrollers.
What it is and how it works:
- A three-terminal shunt regulator that holds its reference node at a fixed voltage by shunting excess current to ground.
- Typically used as a voltage reference for ADCs/DACs, and as a simple, low-power reference in regulators and sensor front ends.
- Some variants are fixed-voltage; others can be configured with external components to set the voltage.
Key features (typical):
- Tight initial accuracy and low temperature drift
- Low noise and low dynamic impedance
- Low quiescent current and small footprint
- Simple external decoupling for best stability
How to use:
- Connect cathode to the supply, anode to ground, and take the reference from the device’s reference pin.
- Ensure the operating current is maintained (per datasheet) and place a bypass capacitor close to the device.
Applications:
- ADC/DAC references, precision regulation, portable instrumentation.
Note: check the exact nominal voltage, current ranges, and pinout for your LM4041DFTA variant in the datasheet.
What it is and how it works:
- A three-terminal shunt regulator that holds its reference node at a fixed voltage by shunting excess current to ground.
- Typically used as a voltage reference for ADCs/DACs, and as a simple, low-power reference in regulators and sensor front ends.
- Some variants are fixed-voltage; others can be configured with external components to set the voltage.
Key features (typical):
- Tight initial accuracy and low temperature drift
- Low noise and low dynamic impedance
- Low quiescent current and small footprint
- Simple external decoupling for best stability
How to use:
- Connect cathode to the supply, anode to ground, and take the reference from the device’s reference pin.
- Ensure the operating current is maintained (per datasheet) and place a bypass capacitor close to the device.
Applications:
- ADC/DAC references, precision regulation, portable instrumentation.
Note: check the exact nominal voltage, current ranges, and pinout for your LM4041DFTA variant in the datasheet.
Features
Here are the key features of the LM4041DFTA (TI) shunt voltage reference:
- Precision shunt voltage reference with fixed output options
- Tight initial accuracy and low temperature coefficient
- Very low dynamic impedance with excellent line and load regulation
- Micropower operation with a wide operating current range (Imin to Imax) for flexibility
- Wide supply and ambient temperature ranges suitable for automotive/industrial use
- Stable with capacitive loads and good startup behavior
- Small surface-mount packaging (SOT-23/SOT-23-like), with Tape & Reel options (DFTA variant) for easy PCB assembly
Note: For exact output voltages, current ranges, and electrical characteristics, please consult the LM4041DFTA datasheet.
- Precision shunt voltage reference with fixed output options
- Tight initial accuracy and low temperature coefficient
- Very low dynamic impedance with excellent line and load regulation
- Micropower operation with a wide operating current range (Imin to Imax) for flexibility
- Wide supply and ambient temperature ranges suitable for automotive/industrial use
- Stable with capacitive loads and good startup behavior
- Small surface-mount packaging (SOT-23/SOT-23-like), with Tape & Reel options (DFTA variant) for easy PCB assembly
Note: For exact output voltages, current ranges, and electrical characteristics, please consult the LM4041DFTA datasheet.
Pinout
- Pin count: 3 pins (3-terminal device, e.g., A, K, REF).
- Function: Precision shunt voltage reference. It maintains a fixed reference voltage between its cathode and anode by shunting current to ground; the REF pin is used to set/adjust the output in adjustable variants.
- Function: Precision shunt voltage reference. It maintains a fixed reference voltage between its cathode and anode by shunting current to ground; the REF pin is used to set/adjust the output in adjustable variants.
Manufacturer
- Manufacturer: Texas Instruments (TI).
- What kind of company: TI is a global American semiconductor company that designs and manufactures analog and embedded processing integrated circuits.
- What kind of company: TI is a global American semiconductor company that designs and manufactures analog and embedded processing integrated circuits.
Application
LM4041DFTA is a low-power shunt voltage reference. Common application areas:
- Precision voltage reference for ADC/DACs, comparators, and instrumentation amplifiers in analog front-ends
- Sensor biasing and conditioning (bridges, RTDs, thermistors) requiring a stable reference
- Battery-powered/portable devices needing a stable reference with low quiescent current
- Zener-replacement in simple regulators and bias networks for low-voltage supply regulation
- Temperature-stable reference for calibration/offset compensation in measurement chains
- References for op-amps and voltage regulators in precision analog circuits
(Uses: low-power, compact, and accurate reference in mixed-signal designs.)
- Precision voltage reference for ADC/DACs, comparators, and instrumentation amplifiers in analog front-ends
- Sensor biasing and conditioning (bridges, RTDs, thermistors) requiring a stable reference
- Battery-powered/portable devices needing a stable reference with low quiescent current
- Zener-replacement in simple regulators and bias networks for low-voltage supply regulation
- Temperature-stable reference for calibration/offset compensation in measurement chains
- References for op-amps and voltage regulators in precision analog circuits
(Uses: low-power, compact, and accurate reference in mixed-signal designs.)
Package
LM4041DFTA comes in a 3-pin SOT-23 (SC-70-3) package.
