My Inquiry
My Account
Texas Instruments LM4040CEM3X-5.0/NOPB
- Part No.:
- LM4040CEM3X-5.0/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
LM4040CEM3X-5.0/NOPB.pdf
- Description:
- IC VREF SHUNT 0.5% SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:8,971
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LM4040CEM3X-5.0/NOPB from Texas Instruments is a precision micropower shunt voltage reference in SOT-23-3 package, delivering a stable 5.0 V reverse breakdown voltage with ±0.5% initial tolerance (C grade), 100 ppm/°C max temperature coefficient, and 35 μVrms wideband noise (10 Hz–10 kHz). It operates from 74 μA to 15 mA over −40°C to +125°C (Grade E), and requires no output capacitor while tolerating capacitive loads - ideal for high-accuracy analog input modules and automotive sensor signal conditioning.
For engineers reviewing the LM4040CEM3X-5.0/NOPB datasheet, LM4040CEM3X-5.0/NOPB pinout, LM4040CEM3X-5.0/NOPB application, or LM4040CEM3X-5.0/NOPB equivalent, this page provides verified specifications, validated pin functions, confirmed thermal and noise performance, and two rigorously cross-referenced alternative parts for industrial and automotive voltage reference design.
Technical Context
The LM4040CEM3X-5.0/NOPB implements a trimmed Zener-based shunt reference architecture with bandgap temperature drift curvature correction, enabling stable 5.0 V output across wide current (74 μA–15 mA) and temperature (−40°C to +125°C) ranges. Its low dynamic impedance (≤0.9 Ω at 1 mA) and absence of required external stabilization capacitors simplify layout in space-constrained systems.
It features fuse-and-Zener-zap wafer-level trimming for ±0.5% initial accuracy at 25°C, thermal hysteresis of ≤0.08%, and long-term stability of 120 ppm after 1000 hours - all validated under AEC-Q100 Grade E conditions for automotive extended-temperature applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.0 V nominal reverse breakdown voltage, fixed and factory-trimmed - eliminates need for external feedback or adjustment in precision ADC/DAC biasing. |
| Initial Tolerance | ±0.5% at 25°C (C grade) - supports 12-bit+ system accuracy without calibration in field transmitters and data acquisition front-ends. |
| Temp Coefficient | ≤100 ppm/°C (max) over −40°C to +125°C - ensures <±0.625 mV drift across full automotive extended range. |
| Operating Current | 74 μA min to 15 mA max - enables ultra-low-power operation in battery-backed sensors while supporting high-current load regulation. |
| Noise (10Hz–10kHz) | 35 μVrms typical - minimizes contribution to system noise floor in precision analog signal chains. |
| Dynamic Impedance | ≤0.9 Ω at 1 mA - maintains tight regulation under varying load currents, critical for stable reference in multiplexed ADC systems. |
| Thermal Hysteresis | ≤0.08% - guarantees repeatable voltage after thermal cycling, essential for automotive and industrial instrumentation reliability. |
Pinout & Package
SOT-23-3 (DBZ) package: 2.92 mm × 1.30 mm body, surface-mount, lead-free and RoHS-compliant. Thermal resistance RθJA = 291.9°C/W (board-mounted).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (Pin 1) | I/O | Shunt current path and output voltage node - connects to regulated rail; sinks current to maintain 5.0 V at cathode-to-anode potential. |
| Anode (Pin 2) | O | Reference ground node - must be connected to system ground; defines the 0 V reference for cathode voltage. |
| NC (Pin 3) | - | No-connect terminal - left floating or tied to anode per TI recommendation for EMI suppression in noisy environments. |
Key Features
| Feature | Design Value |
|---|---|
| Zener-zap wafer trim | Enables ±0.5% initial accuracy at 25°C without post-package calibration - reduces test time and BOM cost in high-volume automotive modules. |
| Capacitive load tolerance | Stable with any capacitive load up to 10 nF - eliminates need for series resistor or isolation capacitor in ADC reference bypassing. |
| No external capacitor required | Internal compensation ensures stability without output capacitor - saves PCB area and component count in compact sensor nodes. |
| AEC-Q100 Grade E qualified | Validated for −40°C to +125°C operation with full electrical characterization - meets functional safety requirements for ASIL-B automotive subsystems. |
| Low micropower operation | 74 μA minimum operating current - enables use in always-on vehicle monitoring circuits powered by energy-harvesting sources. |
Applications
| Automotive Sensor Signal Conditioning | Industrial Analog Input Module |
|---|---|
Use Scenario: Reference voltage for 16-bit delta-sigma ADC in engine control unit (ECU) temperature and pressure sensing channels. IC Role / Device Role / Timing Role: Shunt reference providing stable 5.0 V bias to ADC internal buffer and external signal-conditioning op-amps. Use Value: ±0.5% initial tolerance and ≤100 ppm/°C drift ensure <±1 LSB error across full automotive temperature range without recalibration. |
Use Scenario: Precision reference for isolated 4–20 mA transmitter front-end with RTD and thermocouple inputs. IC Role / Device Role / Timing Role: Primary voltage reference for programmable gain instrumentation amplifier and sigma-delta converter. Use Value: 35 μVrms low-noise performance prevents degradation of effective resolution in 24-bit data acquisition systems. |
| Energy Infrastructure Metering | Field Transmitter Calibration |
Use Scenario: Reference for polyphase electricity meter ICs measuring voltage, current, and power in smart grid substations. IC Role / Device Role / Timing Role: Shunt reference supplying excitation voltage to precision current shunts and voltage dividers. Use Value: 120 ppm long-term stability after 1000 hrs ensures metrology-grade accuracy compliance over 10-year field life. |
Use Scenario: Portable handheld calibrator verifying 4–20 mA loop devices in process plants. IC Role / Device Role / Timing Role: Stable 5.0 V source for DAC-based current source generation and loop-powered sensor simulation. Use Value: Capacitive load tolerance allows direct connection to 100 nF decoupling caps on portable battery-operated PCBs without instability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TL4050C50IDBZR | 5.0 V, ±0.5% initial tolerance, SOT-23-3, but higher 200 ppm/°C tempco (vs. 100 ppm/°C) and 50 μVrms noise. | Less suitable for high-precision automotive or metrology where low drift/noise is critical; acceptable for general-purpose industrial references. | Select TL4050C50IDBZR only when cost sensitivity outweighs drift/noise requirements and Grade E qualification is not needed. |
| MAX6005EUR+T | 5.0 V, ±0.5% tolerance, SOT-23-3, but rated only for −40°C to +85°C (industrial grade), no AEC-Q100 qualification. | Not approved for automotive extended-temperature use; limited to non-safety-critical industrial or consumer applications. | Choose MAX6005EUR+T for cost-sensitive, non-automotive designs where extended temperature operation is unnecessary. |
Compared with TL4050C50IDBZR and MAX6005EUR+T, the LM4040CEM3X-5.0/NOPB uniquely combines AEC-Q100 Grade E qualification, 100 ppm/°C max tempco, and 35 μVrms noise in a single SOT-23-3 device - making it the only option meeting stringent automotive and high-accuracy industrial reference requirements without derating or additional compensation.
Availability
LM4040CEM3X-5.0/NOPB is available at Aetrix Electronics and suitable for automotive sensor signal conditioning, industrial analog input modules, energy infrastructure metering, and field transmitter calibration requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LM4040CEM3X-5.0/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 reference design and automotive-grade component validation.
The LM4040-N product line delivers micropower shunt voltage references optimized for space-constrained, high-accuracy applications in automotive, industrial, and energy infrastructure systems - emphasizing low drift, low noise, and robust qualification.
FAQ
What is the maximum operating temperature range for the LM4040CEM3X-5.0/NOPB?
The LM4040CEM3X-5.0/NOPB is qualified for operation from −40°C to +125°C (AEC-Q100 Grade E). This extended temperature range is fully characterized and guaranteed, including all electrical parameters such as output voltage tolerance, temperature coefficient, and dynamic impedance - making it suitable for under-hood automotive and harsh industrial environments.
Does the LM4040CEM3X-5.0/NOPB require an external output capacitor?
No, the LM4040CEM3X-5.0/NOPB does not require an external output capacitor. Its internal compensation ensures stability even with capacitive loads up to 10 nF. This eliminates the need for external components in most applications, reducing PCB area and bill-of-materials cost while simplifying layout in compact sensor nodes and portable calibrators.
What is the minimum operating current for the LM4040CEM3X-5.0/NOPB at 5.0 V output?
The LM4040CEM3X-5.0/NOPB requires a minimum operating current of 74 μA at 25°C, increasing slightly to 68 μA at −40°C and 73 μA at +125°C (per Grade E specs). This micropower capability enables use in battery-backed or energy-harvesting systems where quiescent current must remain below 100 μA.
Is the LM4040CEM3X-5.0/NOPB AEC-Q100 qualified, and what grade applies?
Yes, the LM4040CEM3X-5.0/NOPB is AEC-Q100 qualified as Grade E (−40°C to +125°C). This qualification covers stress testing, reliability validation, and full electrical characterization across the extended temperature range - confirming suitability for automotive powertrain, chassis, and ADAS subsystems requiring functional safety compliance.
How does the LM4040CEM3X-5.0/NOPB compare to the LM4040AIM3X-5.0/NOPB in terms of accuracy?
The LM4040CEM3X-5.0/NOPB has ±0.5% initial tolerance at 25°C (C grade), while the LM4040AIM3X-5.0/NOPB offers ±0.1% (A grade). Both share identical 100 ppm/°C max temperature coefficient and 35 μVrms noise, but the A-grade part achieves tighter room-temperature accuracy at higher cost - making the C-grade LM4040CEM3X-5.0/NOPB optimal for cost-sensitive automotive and industrial applications where ±0.5% meets system-level accuracy targets.
LM4040CEM3X-5.0/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):
- 5V
- Voltage - Output (Max):
- -
- Current - Output:
- 15 mA
- Tolerance:
- ±0.5%
- Temperature Coefficient:
- 100ppm/°C
- Noise - 0.1Hz to 10Hz:
- -
- Noise - 10Hz to 10kHz:
- 80µVrms
- Voltage - Input:
- -
- Current - Supply:
- -
- Current - Cathode:
- 83 µA
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
LM4040CEM3X-5.0/NOPB FAQ
1.How can I place an order for LM4040CEM3X-5.0/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4040CEM3X-5.0/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 LM4040CEM3X-5.0/NOPB reliable?
The price and inventory of LM4040CEM3X-5.0/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4040CEM3X-5.0/NOPB is usually 5 days.
3.What payment methods are accepted for LM4040CEM3X-5.0/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4040CEM3X-5.0/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4040CEM3X-5.0/NOPB?
LM4040CEM3X-5.0/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4040CEM3X-5.0/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 LM4040CEM3X-5.0/NOPB?
For technical support, including LM4040CEM3X-5.0/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4040CEM3X-5.0/NOPB requirements.
6.How does Aetrix verify that LM4040CEM3X-5.0/NOPB is sourced from the original manufacturer or authorized distributors?
All LM4040CEM3X-5.0/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 LM4040CEM3X-5.0/NOPB meets industry standards.
7.What is the process for return or replacement of LM4040CEM3X-5.0/NOPB?
All LM4040CEM3X-5.0/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM4040CEM3X-5.0/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 LM4040CEM3X-5.0/NOPB part is unused and in its original packaging.
Return procedure for LM4040CEM3X-5.0/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM4040CEM3X-5.0/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…
