LM4040D50IDBZR

LM4040D50IDBZR is a fixed-output shunt voltage reference from TI’s LM4040 family. The D50 variant provides a nominal 2.50 V reference. It is a 3-pin device used to generate a precise, stable reference for analog circuits (e.g., ADCs, voltage references, calibration loops).
Key points:
- Fixed, low-noise reference with low dynamic impedance and good temperature stability
- Sits as a shunt regulator: bias from V+ through a resistor; cathode to the reference node, anode to ground
- Simple, low-component reference solution for microcontrollers, ADCs, and precision regulators
Package/ordering:
- IDBZR indicates Pb-free, RoHS-compliant package (D-3 pin, SOT-23 style) with standard TI packaging
Note:
- Check the TI datasheet for exact operating current range, temperature coefficient, tolerance, and recommended bias resistor values.

LM4040D50IDBZR is a 2.5 V shunt voltage reference (TI). Cross equivalents (2.5 V fixed shunt refs) include: TI LM4040-2.5 in other package versions; Analog Devices ADR4525-2.5; On Semiconductor NCP431A-2.5. Note: exact tolerance, knee current and packaging differ—use a cross-reference tool or distributor datasheets to verify suitable substitutes.

- Pin count: 3 pins (SOT-23/ podob package)
- Function: Fixed shunt voltage reference diode (LM4040D50), provides a precise reference voltage (nominal 50 mV) by shunting current.

- Manufacturer: Texas Instruments (TI)
- What kind of company: An American multinational semiconductor company that designs and manufactures analog and mixed-signal integrated circuits and other electronic components.

LM4040D50IDBZR is a precision shunt voltage reference. Common application areas:
- Generate a stable reference voltage for ADC/DAC in instrumentation and microcontrollers
- Reference input for voltage regulators and power-management circuits
- Biasing/offset references for op-amps and comparators
- Sensor interfaces and measurement front-ends in portable or battery-powered devices
- LED-driver and current-sensing circuits requiring a stable reference
- Data acquisition systems and test equipment for improved accuracy

Package: SOT‑23‑3 (3‑pin) surface‑mount package. Pb‑free/RoHS compliant; suffix DBZR indicates tape‑and‑reel packaging with Pb‑free finish.