My Inquiry
My Account
Texas Instruments LM4041CEM3X-ADJ/NOPB
- Part No.:
- LM4041CEM3X-ADJ/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
LM4041CEM3X-ADJ/NOPB.pdf
- Description:
- IC VREF SHUNT ADJ 0.5% SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:3,803
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LM4041CEM3X-ADJ/NOPB from Texas Instruments is a precision adjustable shunt voltage reference in SOT-23-3 package, delivering 1.233 V nominal reference voltage with ±0.5% initial tolerance (C grade), 100 ppm/°C max temperature coefficient, 20 μVRMS wideband noise (10 Hz–10 kHz), and stable operation from 60 μA to 12 mA. It enables high-accuracy ADC/DAC biasing and sensor excitation in battery-powered instrumentation.
For engineers reviewing the LM4041CEM3X-ADJ/NOPB datasheet, LM4041CEM3X-ADJ/NOPB pinout, LM4041CEM3X-ADJ/NOPB application, or LM4041CEM3X-ADJ/NOPB equivalent, key selection criteria include its extended temperature range (−40°C to +125°C), no-output-capacitor requirement, feedback-pin current of 60–100 nA at 25°C, and compatibility with adjustable output voltages from 1.24 V to 10 V via external resistor divider.
Technical Context
The LM4041CEM3X-ADJ/NOPB uses a bandgap-based shunt architecture with curvature-corrected temperature drift compensation, enabling stable reverse breakdown voltage across −40°C to +125°C. Its feedback (FB) pin senses output voltage through an external resistive divider, establishing programmable regulation without internal op-amp or series pass element.
It operates as a two-terminal shunt device: cathode carries total load + reference current, anode connects to system ground, and FB pin provides high-impedance voltage sensing. Dynamic impedance is 0.3 Ω at 1 mA (VOUT = VREF) and rises to 2 Ω at VOUT = 10 V, supporting low-noise, low-drift performance in precision analog signal chains.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reference Voltage | 1.233 V nominal at 100 μA, VOUT = 5 V - sets base for external resistor-divider programming |
| Initial Tolerance | ±0.5% at 25°C (C grade) - ensures ≤±6.2 mV error before temp/aging effects |
| Temp Coefficient | ≤100 ppm/°C over −40°C to +125°C - contributes ≤±12.4 mV drift across full range |
| Operating Current | 60 μA min / 12 mA max - supports ultra-low-power sensing and high-current DAC reference |
| Noise (10 Hz–10 kHz) | 20 μVRMS - limits quantization uncertainty in 16-bit+ ADC systems |
| Feedback Current | 60–100 nA at 25°C - minimizes divider resistor-induced error and power loss |
| Output Range | 1.24 V to 10 V - configurable via external R1/R2; VOUT = VREF × (1 + R1/R2) |
Pinout & Package
SOT-23-3 package (DBZ), body size 1.30 mm × 2.92 mm, surface-mount, JEDEC-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 3) | Ground reference terminal | Connected to system ground; serves as return path for cathode current and FB bias |
| Cathode (Pin 2) | Shunt current & output node | Carries total current (load + reference); output voltage develops between Cathode and Anode |
| FB (Pin 1) | Feedback input | High-impedance sense node for external resistor divider; draws ≤100 nA to minimize loading error |
Key Features
| Feature | Design Value |
|---|---|
| Adjustable output voltage | Programmable 1.24 V to 10 V using two external resistors - eliminates need for multiple fixed-voltage references |
| No output capacitor required | Internally compensated for stability with any capacitive load - reduces BOM count and PCB area in space-constrained designs |
| Extended temperature operation | Specified from −40°C to +125°C - suitable for under-hood automotive and industrial control environments |
| Low quiescent current | 60 μA minimum operating current - enables use in always-on battery monitoring and IoT endpoint sensors |
| AEC-Q100 Grade 1 qualified | Qualified per AEC-Q100 Rev G for automotive applications - supports functional safety requirements in ADAS and body electronics |
Applications
| Battery Monitoring System | Precision Data Acquisition |
|---|---|
Use Scenario: Monitoring cell voltage in 3S Li-ion packs for state-of-charge estimation and overvoltage protection. IC Role / Device Role / Timing Role: Shunt reference providing stable 2.5 V or 3.3 V bias to ADC input channel and comparator threshold. Use Value: ±0.5% initial tolerance and 100 ppm/°C TC ensure <±10 mV absolute error across automotive temperature range, improving SOC accuracy by >2%. | Use Scenario: High-resolution sensor signal conditioning in portable gas analyzers with 24-bit delta-sigma ADCs. IC Role / Device Role / Timing Role: Adjustable reference source for ADC VREF, set to match sensor full-scale output (e.g., 4.096 V). Use Value: 20 μVRMS noise and low dynamic impedance (0.3 Ω) prevent reference-induced noise floor elevation, preserving ENOB > 21 bits. |
| Automotive Cabin Controller | Industrial Process Transmitter |
Use Scenario: Providing regulated bias for MEMS pressure and humidity sensors in HVAC control modules. IC Role / Device Role / Timing Role: Low-power shunt reference powering sensor bridge excitation and analog front-end. Use Value: 60 μA min operating current allows continuous operation from 12 V supply via high-value dropping resistor, extending module standby life. | Use Scenario: 4–20 mA loop-powered transmitter requiring stable 2.5 V reference for DAC and current-sense amplifier. IC Role / Device Role / Timing Role: Two-terminal shunt reference sharing common ground with loop supply and output stage. Use Value: Tolerates capacitive loads and requires no bypass capacitor - simplifies layout in harsh EMI environments near motors and solenoids. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TL431CDBZR | Fixed 2.495 V reference; higher 2 mA min cathode current; 50 ppm/°C TC (typ) | Not adjustable; unsuitable for sub-2.4 V or >5 V outputs; requires external resistor for adjustment | Select when fixed 2.5 V output suffices and higher current capability is needed |
| MAX6126AASA+ | Series reference; 3-pin SO-8; 0.04% initial accuracy; 3 ppm/°C TC; 1.2 V to 5 V fixed options only | Requires separate input/output pins and bypass capacitor; not shunt-configurable | Select for ultra-low drift (<5 ppm/°C) in lab-grade instrumentation where layout space permits |
Compared with TL431CDBZR and MAX6126AASA+, the LM4041CEM3X-ADJ/NOPB uniquely combines true adjustability (1.24–10 V), ultra-low minimum current (60 μA), and SOT-23 footprint-making it optimal for compact, battery-sensitive, and thermally demanding shunt reference roles where programmability and grade-1 automotive qualification are mandatory.
Availability
LM4041CEM3X-ADJ/NOPB is available at Aetrix Electronics and suitable for battery-powered equipment, precision data-acquisition systems, and automotive electronics requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LM4041CEM3X-ADJ/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 leadership in precision reference design and automotive-qualified components.
The LM4041-N family was engineered for micro-power, high-accuracy shunt referencing in space- and energy-constrained systems-including automotive cabin controllers, portable instrumentation, and industrial sensor nodes-where stability, small size, and qualification matter.
FAQ
What is the maximum output voltage supported by the LM4041CEM3X-ADJ/NOPB?
The LM4041CEM3X-ADJ/NOPB supports an adjustable output voltage range of 1.24 V to 10 V, determined by the external resistor divider connected to its FB pin. This upper limit is specified in the Absolute Maximum Ratings table and applies across the full operating temperature range. Exceeding 10 V risks violating the 15 V maximum output voltage rating and may cause irreversible damage to the device.
Does the LM4041CEM3X-ADJ/NOPB require an output capacitor for stability?
No, the LM4041CEM3X-ADJ/NOPB does not require an output capacitor for stability. Its internal design eliminates the need for external stabilization capacitance while maintaining stability with any capacitive load-a key advantage over older shunt references. This feature reduces bill-of-materials count and PCB area, especially valuable in compact, high-density layouts typical of portable and automotive electronics.
What is the feedback pin (FB) input current specification for the LM4041CEM3X-ADJ/NOPB?
The FB pin input current for the LM4041CEM3X-ADJ/NOPB is 60–100 nA at 25°C (C grade), rising to ≤120 nA over −40°C to +125°C. This ultra-low bias current minimizes voltage error introduced by the external resistor divider, enabling accurate programming of output voltages up to 10 V with standard 1% metal-film resistors without trimming.
Is the LM4041CEM3X-ADJ/NOPB qualified for automotive applications?
Yes, the LM4041CEM3X-ADJ/NOPB is AEC-Q100 Grade 1 qualified (−40°C to +125°C ambient), making it suitable for automotive applications including body control modules, cabin sensors, and ADAS subsystems. Its qualification covers stress testing for temperature cycling, humidity, and mechanical shock-ensuring reliability in demanding vehicular environments.
How does the LM4041CEM3X-ADJ/NOPB achieve low temperature coefficient?
The LM4041CEM3X-ADJ/NOPB achieves ≤100 ppm/°C max temperature coefficient through bandgap reference design with curvature correction circuitry. This compensation counteracts the parabolic drift inherent in basic bandgap cells, ensuring linearized voltage vs. temperature behavior across −40°C to +125°C-critical for maintaining accuracy in unregulated thermal environments like engine bays or outdoor industrial enclosures.
LM4041CEM3X-ADJ/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:
- Adjustable
- Voltage - Output (Min/Fixed):
- 1.233V
- Voltage - Output (Max):
- 10 V
- Current - Output:
- 12 mA
- Tolerance:
- ±0.5%
- Temperature Coefficient:
- 100ppm/°C
- Noise - 0.1Hz to 10Hz:
- -
- Noise - 10Hz to 10kHz:
- 20µVrms
- Voltage - Input:
- -
- Current - Supply:
- -
- Current - Cathode:
- 68 µA
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
LM4041CEM3X-ADJ/NOPB FAQ
1.How can I place an order for LM4041CEM3X-ADJ/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4041CEM3X-ADJ/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 LM4041CEM3X-ADJ/NOPB reliable?
The price and inventory of LM4041CEM3X-ADJ/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4041CEM3X-ADJ/NOPB is usually 5 days.
3.What payment methods are accepted for LM4041CEM3X-ADJ/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4041CEM3X-ADJ/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4041CEM3X-ADJ/NOPB?
LM4041CEM3X-ADJ/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4041CEM3X-ADJ/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 LM4041CEM3X-ADJ/NOPB?
For technical support, including LM4041CEM3X-ADJ/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4041CEM3X-ADJ/NOPB requirements.
6.How does Aetrix verify that LM4041CEM3X-ADJ/NOPB is sourced from the original manufacturer or authorized distributors?
All LM4041CEM3X-ADJ/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 LM4041CEM3X-ADJ/NOPB meets industry standards.
7.What is the process for return or replacement of LM4041CEM3X-ADJ/NOPB?
All LM4041CEM3X-ADJ/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM4041CEM3X-ADJ/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 LM4041CEM3X-ADJ/NOPB part is unused and in its original packaging.
Return procedure for LM4041CEM3X-ADJ/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM4041CEM3X-ADJ/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…
