My Inquiry
My Account
Texas Instruments LM4040QBIM3-2.5/NOPB
- Part No.:
- LM4040QBIM3-2.5/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
LM4040QBIM3-2.5/NOPB.pdf
- Description:
- IC VREF SHUNT 0.2% SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:3,528
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LM4040QBIM3-2.5/NOPB from Texas Instruments is an AEC-Q100 Grade 3 qualified precision micropower shunt voltage reference in SOT-23 package, delivering a stable 2.5 V reverse breakdown voltage with ±0.2% initial tolerance (B grade), 35 μVRMS wideband noise (10 Hz–10 kHz), 100 ppm/°C max temperature coefficient, and operation from −40°C to +85°C. It serves as a compact, capacitor-free reference for analog signal conditioning in automotive sensor modules.
For engineers reviewing the LM4040QBIM3-2.5/NOPB datasheet, LM4040QBIM3-2.5/NOPB pinout, LM4040QBIM3-2.5/NOPB application, or LM4040QBIM3-2.5/NOPB equivalent, this device supports high-accuracy ADC/DAC biasing, field transmitter calibration, and automotive-grade power monitoring where low quiescent current (60 μA min), no external capacitor requirement, and AEC-Q100 qualification are critical selection criteria.
Technical Context
The LM4040QBIM3-2.5/NOPB uses Zener-zap trimming and bandgap-derived curvature correction to achieve tight initial accuracy and low thermal drift across its industrial temperature range. Its shunt topology requires only an external current-limiting resistor and tolerates any capacitive load without oscillation.
It operates as a two-terminal device: cathode supplies output voltage under reverse bias while anode is grounded; the third pin (NC) must float or connect to anode per EMI mitigation guidance. Dynamic impedance remains ≤0.8 Ω at 1 mA, enabling stable regulation even with varying load currents from 60 μA to 15 mA.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.5 V nominal reverse breakdown voltage - provides precise DC bias point for 12-bit+ data acquisition systems. |
| Initial Tolerance | ±0.2% at 25°C (B grade) - ensures ≤±5 mV absolute error before temperature or aging effects. |
| Temp Coefficient | ≤100 ppm/°C - contributes ≤±19 mV total drift over −40°C to +85°C operating range. |
| Output Noise | 35 μVRMS (10 Hz–10 kHz) - minimizes added uncertainty in high-resolution analog front-ends. |
| Operating Current | 60 μA to 15 mA - enables ultra-low-power sensor nodes and robust performance across wide load variations. |
| Thermal Hysteresis | 0.08% - limits voltage shift after thermal cycling, critical for repeatable calibration in automotive ECUs. |
| AEC-Q100 Grade | Grade 3 (−40°C to +85°C) - certified for non-critical automotive applications including body electronics and infotainment power rails. |
Pinout & Package
SOT-23 (DBZ) package: 3-pin surface-mount, 2.92 mm × 1.30 mm body size, JEDEC MO-178 compatible. Thermal resistance RθJA = 291.9°C/W (board-mounted).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (Pin 1) | Shunt current input / output node | Reverse-biased terminal delivering regulated 2.5 V; connects to system load and current-setting resistor. |
| Anode (Pin 2) | Reference ground | Must be connected to system ground; defines 0 V reference for output voltage measurement. |
| NC (Pin 3) | No-connect terminal | Internally unconnected; TI recommends floating or tying to Pin 2 in high-EMI environments to reduce noise coupling. |
Key Features
| Feature | Design Value |
|---|---|
| No external capacitor required | Stable operation with any capacitive load eliminates BOM cost and layout area for decoupling caps. |
| Zener-zap voltage trim | Ensures ±0.2% initial accuracy at wafer sort, reducing post-package calibration effort in production test. |
| Low dynamic impedance | ≤0.8 Ω at 1 mA enables fast transient response and minimal load-regulation error (<6 mV from 1–15 mA). |
| Wide operating current range | 60 μA minimum supports battery-powered sensors; 15 mA maximum allows driving moderate loads directly. |
| AEC-Q100 qualification | Grade 3 certification validates reliability for automotive body control modules and ADAS sub-systems. |
Applications
| Field Transmitters | Automotive Sensor Modules |
|---|---|
Use Scenario: 4–20 mA loop-powered industrial pressure/temperature transmitters requiring stable excitation and ADC reference. IC Role / Device Role / Timing Role: Shunt voltage reference providing 2.5 V precision bias for instrumentation amplifier and SAR ADC. Use Value: Eliminates need for external filter capacitor and maintains <±0.05% total error over temperature, meeting IEC 61000-4 immunity requirements. |
Use Scenario: Tire pressure monitoring systems (TPMS) and cabin air quality sensors operating in vehicle interior environments. IC Role / Device Role / Timing Role: Primary voltage reference for microcontroller ADC measuring analog sensor outputs. Use Value: AEC-Q100 Grade 3 rating and 35 μVRMS noise ensure accurate gas concentration readings across −40°C to +85°C ambient range. |
| Data Acquisition Systems | Analog Input Modules |
Use Scenario: Portable multichannel data loggers capturing thermocouple or strain gauge signals with 16-bit resolution. IC Role / Device Role / Timing Role: Reference source for multiplexed delta-sigma ADC front-end with programmable gain amplifier. Use Value: 100 ppm/°C tempco and 0.08% thermal hysteresis limit full-scale error drift to <0.1% over repeated thermal cycles. |
Use Scenario: PLC analog input cards accepting 0–10 V or 4–20 mA field signals in factory automation cabinets. IC Role / Device Role / Timing Role: Isolated reference for signal conditioning circuitry feeding isolated ADCs. Use Value: Stable 2.5 V output enables ±0.1% measurement accuracy across 8-channel simultaneous sampling without per-channel calibration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM4040CIM3-2.5/NOPB | ±0.5% initial tolerance (C grade), same 2.5 V output and SOT-23 package | Lower accuracy acceptable in cost-sensitive industrial controls where ±12 mV error is permissible | Select when AEC-Q100 qualification is not required and tighter tolerance is unnecessary for system-level accuracy. |
| MAX6002EUR+T | 2.5 V output, ±0.2% tolerance, SC70-3 package, 50 μVRMS noise, no AEC-Q100 rating | Higher noise and non-automotive qualification limit use to commercial-grade portable instruments | Choose for space-constrained designs needing identical electrical specs but without automotive compliance requirements. |
Compared with LM4040CIM3-2.5/NOPB and MAX6002EUR+T, the LM4040QBIM3-2.5/NOPB uniquely combines AEC-Q100 Grade 3 qualification, 35 μVRMS noise, and ±0.2% tolerance in SOT-23-making it the only option qualified for automotive sensor reference duties without sacrificing precision or board area.
Availability
LM4040QBIM3-2.5/NOPB is available at Aetrix Electronics and suitable for automotive sensor modules, industrial field transmitters, and portable data acquisition systems requiring stable component supply with guaranteed long-term continuity.
Supply support for LM4040QBIM3-2.5/NOPB includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor leader specializing in analog and embedded processing technologies, with decades of expertise in precision voltage references and automotive-qualified components.
The LM4040-N series was designed specifically for space-constrained, high-accuracy analog systems requiring micropower operation and robust thermal performance-targeting automotive, industrial, and energy infrastructure applications.
FAQ
What is the AEC-Q100 qualification status of LM4040QBIM3-2.5/NOPB?
The LM4040QBIM3-2.5/NOPB is AEC-Q100 qualified to Grade 3 (−40°C to +85°C ambient), confirming its suitability for non-safety-critical automotive applications such as body electronics, climate control, and infotainment power monitoring. It is not rated for Grade 1 (−40°C to +125°C) operation.
Does LM4040QBIM3-2.5/NOPB require an external output capacitor?
No, the LM4040QBIM3-2.5/NOPB does not require an external output capacitor. Its internal design ensures stability with any capacitive load, eliminating the need for additional filtering components and simplifying PCB layout for compact sensor interfaces.
What is the minimum operating current for LM4040QBIM3-2.5/NOPB?
The LM4040QBIM3-2.5/NOPB has a minimum operating current of 60 μA at 25°C, enabling ultra-low-power operation in battery-backed field transmitters and wireless sensor nodes while maintaining 2.5 V regulation within specification.
How does the NC pin (Pin 3) function in LM4040QBIM3-2.5/NOPB?
Pin 3 of the LM4040QBIM3-2.5/NOPB is a no-connect terminal. TI recommends leaving it floating or connecting it to the anode (Pin 2) in high-EMI environments-such as near switching regulators or motors-to reduce noise coupling into the reference node.
What is the typical wideband noise performance of LM4040QBIM3-2.5/NOPB?
The LM4040QBIM3-2.5/NOPB delivers 35 μVRMS wideband noise over the 10 Hz to 10 kHz bandwidth, measured at 100 μA operating current. This low-noise characteristic supports high-resolution (≥16-bit) analog-to-digital conversion without degrading effective number of bits (ENOB).
LM4040QBIM3-2.5/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Reference Type:
- Shunt
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 2.5V
- Voltage - Output (Max):
- -
- Current - Output:
- 15 mA
- Tolerance:
- ±0.2%
- Temperature Coefficient:
- 100ppm/°C
- Noise - 0.1Hz to 10Hz:
- -
- Noise - 10Hz to 10kHz:
- 35µVrms
- Voltage - Input:
- -
- Current - Supply:
- -
- Current - Cathode:
- 65 µA
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
LM4040QBIM3-2.5/NOPB FAQ
1.How can I place an order for LM4040QBIM3-2.5/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4040QBIM3-2.5/NOPB on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for LM4040QBIM3-2.5/NOPB reliable?
The price and inventory of LM4040QBIM3-2.5/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4040QBIM3-2.5/NOPB is usually 5 days.
3.What payment methods are accepted for LM4040QBIM3-2.5/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4040QBIM3-2.5/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4040QBIM3-2.5/NOPB?
LM4040QBIM3-2.5/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4040QBIM3-2.5/NOPB order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for LM4040QBIM3-2.5/NOPB?
For technical support, including LM4040QBIM3-2.5/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4040QBIM3-2.5/NOPB requirements.
6.How does Aetrix verify that LM4040QBIM3-2.5/NOPB is sourced from the original manufacturer or authorized distributors?
All LM4040QBIM3-2.5/NOPB products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that LM4040QBIM3-2.5/NOPB meets industry standards.
7.What is the process for return or replacement of LM4040QBIM3-2.5/NOPB?
All LM4040QBIM3-2.5/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM4040QBIM3-2.5/NOPB, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The LM4040QBIM3-2.5/NOPB part is unused and in its original packaging.
Return procedure for LM4040QBIM3-2.5/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM4040QBIM3-2.5/NOPB Tags
-
TL431AIDBZR
Texas Instruments
-
TL431BQDBZR
Texas Instruments
-
AN431AN-ATRG1
Diodes Incorporated
-
LM4040CYM3-2.5-TR
Microchip Technology
-
LM4040CYM3-4.1-TR
Microchip Technology
-
LM4040EIM3-2.5/NOPB
Texas Instruments
-
AZ431LBNTR-G1
Diodes Incorporated
-
LM4040D20IDBZR
Texas Instruments
-
LM4041DIM3-ADJ/NOPB
Texas Instruments
-
LM4040DIM3X-2.5/NOPB
Texas Instruments
-
LM4040DIM3-2.5/NOPB
Texas Instruments
-
AZ431LANTR-G1
Diodes Incorporated
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
