LM4040AIM3X-2.5
| Parameters | |
|---|---|
| Series | - |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
| RoHS Status | ROHS3 Compliant |
| Package / Case | TO-236-3, SC-59, SOT-23-3 |
| Mfr | Texas Instruments |
| Mounting Type | Surface Mount |
| Operating Temperature | -40°C ~ 85°C (TA) |
| Current - Supply | - |
| Output Type | Fixed |
| Voltage - Input | - |
| Tolerance | ±0.1% |
| Temperature Coefficient | 100ppm/°C |
| Current - Output | 15 mA |
| Supplier Device Package | SOT-23-3 |
| Reference Type | Shunt |
| Current - Cathode | 65 µA |
| Voltage - Output (Min/Fixed) | 2.5V |
| Noise - 0.1Hz to 10Hz | - |
| Noise - 10Hz to 10kHz | 35µVrms |
| Package | Tape & Reel (TR) |
| Product Status | Last Time Buy |
| Base Product Number | LM4040 |
| REACH Status | REACH Unaffected |
| Standard Package | 3,000 |
| ECCN | EAR99 |
| HTSUS | 8542.39.0001 |
LM4040AIM3X-2.5 micropower shunt voltage reference ic Fixed 2.5V V ±0.1% 15 mA SOT-23-3
The LM4040AIM3X-2.5 is a precision micropower shunt voltage reference manufactured by Texas Instruments, delivering a fixed 2.5V output with exceptional accuracy and stability for low-power, space-constrained applications. Built using advanced fuse and Zener-zap trim technology, it achieves an initial tolerance of ±0.1% at 25°C (A-grade), a low temperature coefficient of 100ppm/°C maximum, and low output noise of 80µVrms typical (10Hz to 10kHz), ensuring reliable performance across varying conditions. Operating with a wide current range from 60µA to 15mA, it requires no external stabilizing capacitor and remains stable with any capacitive load, simplifying design and reducing BOM cost. Housed in a compact SOT-23-3 surface-mount package, it supports an industrial temperature range of -40°C to +85°C, making it ideal for portable and industrial systems.
The LM4040AIM3X-2.5 serves as a stable voltage reference for data acquisition systems, providing precise comparison levels for ADCs and DACs in industrial measurement and sensor interfaces. It is widely used in portable battery-powered devices such as multimeters, medical monitors, and IoT sensors, where low power consumption and small form factor are critical. It supports precision power supplies and voltage regulators, offering accurate voltage calibration for linear and switching power converters. It also applies to automotive electronics, PLCs, and instrumentation systems, leveraging its industrial temperature range and high stability for reliable operation in harsh environments.
Alternative voltage references
● Maxim MAX6032-2.5: Precision shunt reference with ±0.05% accuracy, 70ppm/°C drift, and SOT-23 package, ideal for high-precision instrumentation.
● Diodes Inc ZR40401F25: 2.5V shunt reference with ±0.1% tolerance, 100ppm/°C, and SOT-23, pin-compatible replacement for cost-sensitive designs.
● Microchip LM285-2.5: Micropower 2.5V reference with ±0.2% accuracy, 120ppm/°C, and TO-92/SOT-23 options, suited for general-purpose analog circuits.
● onsemi TL431: Adjustable shunt reference (2.5V–36V) with ±0.5% tolerance, wide current range, and multiple packages, offering flexible voltage programmability.
