My Inquiry
My Account
Texas Instruments LM4041BIM3-1.2
- Part No.:
- LM4041BIM3-1.2
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
LM4041BIM3-1.2.pdf
- Description:
- IC VREF SHUNT 0.2% SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:4,349
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LM4041BIM3-1.2 from Texas Instruments is a precision 1.225 V shunt voltage reference in SOT-23 package, rated for industrial temperature range (−40°C to +85°C), with ±0.2% initial tolerance at 25°C, 100 ppm/°C max temperature coefficient, and 20 μVRMS wideband noise (10 Hz–10 kHz). It serves as a stable voltage reference in low-power analog signal chains for data acquisition and battery-powered instrumentation.
For engineers reviewing the LM4041BIM3-1.2 datasheet, LM4041BIM3-1.2 pinout, LM4041BIM3-1.2 application, or LM4041BIM3-1.2 equivalent, key selection criteria include reverse breakdown voltage accuracy over temperature, minimum operating current (60 μA), dynamic impedance (≤1.5 Ω), capacitive load stability, and AEC-Q100 Grade 3 qualification suitability for automotive subsystems.
Technical Context
The LM4041BIM3-1.2 uses a bandgap-based Zener-zap trimmed shunt architecture with curvature-corrected temperature drift compensation. Its two-terminal configuration operates in reverse breakdown mode, sinking current through the cathode while maintaining a precise 1.225 V across anode-to-cathode terminals.
It requires no output capacitor and remains stable with any capacitive load up to 10 nF. The device achieves ±0.2% initial accuracy via wafer-level fuse/Zener-zap trimming and supports operation from 60 μA to 12 mA reverse current - enabling use in ultra-low-power sensor biasing and high-accuracy ADC reference circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 1.225 V nominal reverse breakdown voltage - sets precise reference point for ADCs, DACs, and comparators |
| Initial Tolerance | ±0.2% at 25°C (±2.4 mV) - enables high-resolution measurement without post-calibration |
| Temp Coefficient | ≤100 ppm/°C over −40°C to +85°C - ensures < ±9.2 mV total drift across full industrial range |
| Min Operating Current | 60 μA - supports micropower applications such as coin-cell-powered sensors and portable meters |
| Noise (10 Hz–10 kHz) | 20 μVRMS - low enough for 16-bit+ data acquisition systems without additional filtering |
| Dynamic Impedance | ≤1.5 Ω at 1 mA - minimizes load regulation error (<6 mV change over 1 mA current swing) |
| Long-Term Stability | 120 ppm after 1000 hrs - predictable aging behavior for mission-critical calibration references |
Pinout & Package
SOT-23 (DBZ) 3-pin surface-mount package, 1.30 mm × 2.92 mm body size, with gull-wing leads. Anode (pin 2) is grounded; cathode (pin 1) carries shunt current and defines output voltage node.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (Pin 1) | I/O | Shunt current sink and output voltage node - connects to load and feedback network |
| Anode (Pin 2) | O | Ground reference terminal - must be connected to system ground for proper regulation |
| NC (Pin 3) | - | No-connect terminal - must float or tie to anode per EMI mitigation guidance |
Key Features
| Feature | Design Value |
|---|---|
| No external capacitor required | Enables space-constrained PCB layouts and eliminates capacitor-related aging or ESR instability |
| Stable with capacitive loads | Supports direct connection to ADC input capacitors or long traces without oscillation risk |
| Low 60 μA minimum current | Allows use in always-on sensor nodes powered by energy harvesters or microbatteries |
| AEC-Q100 Grade 3 qualified | Validated for automotive subsystems operating from −40°C to +85°C ambient |
| 20 μVRMS broadband noise | Meets SNR requirements of 16-bit SAR and delta-sigma ADCs without post-filtering |
Applications
| Battery-Powered Instrumentation | Data Acquisition Systems |
|---|---|
Use Scenario: Portable multimeter or handheld environmental sensor with single-cell Li-ion supply and 16-bit ADC. IC Role / Device Role / Timing Role: Precision 1.225 V shunt reference for ADC voltage scaling and offset calibration. Use Value: Enables ±0.2% absolute measurement accuracy over temperature without recalibration, extending field service intervals. |
Use Scenario: Industrial PLC analog input module acquiring thermocouple and RTD signals. IC Role / Device Role / Timing Role: Stable reference for sigma-delta ADC front-end and programmable gain amplifier biasing. Use Value: 100 ppm/°C tempco and 20 μVRMS noise ensure ≤0.01% FS error contribution across 0–70°C operating range. |
| Automotive Body Electronics | Precision Audio Signal Conditioning |
Use Scenario: In-cabin air quality sensor node in HVAC control unit, operating under AEC-Q100 Grade 3 conditions. IC Role / Device Role / Timing Role: Reference for low-power gas sensor signal conditioning and microcontroller ADC. Use Value: AEC-Q100 qualification and −40°C to +85°C guaranteed performance eliminate need for derating or thermal margining. |
Use Scenario: High-fidelity audio ADC/DAC interface in professional audio mixer with 24-bit resolution. IC Role / Device Role / Timing Role: Low-noise reference for anti-aliasing filter biasing and ADC reference rail. Use Value: 20 μVRMS noise floor preserves >110 dB SNR, avoiding audible distortion in critical audio paths. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM4041CIM3-1.2 | ±0.5% initial tolerance (vs. ±0.2% for LM4041BIM3-1.2); same package, temp range, and noise | Acceptable where 12-bit system accuracy suffices; lower cost for non-critical references | Select when budget constraints outweigh need for <0.1% residual error in calibration-sensitive designs |
| REF3012AIDBZR | 1.2 V output, ±0.2% tolerance, but higher 50 μVRMS noise and 100 μA min current | Less suitable for ultra-low-noise or micropower applications; better for higher-current buffered references | Choose only if existing design uses TI REF30 family footprint and layout - not pin-compatible with LM4041BIM3-1.2 |
Compared with LM4041CIM3-1.2, the LM4041BIM3-1.2 delivers tighter initial accuracy for calibration-critical systems; compared with REF3012AIDBZR, it offers lower noise and lower minimum current but lacks integrated buffer - requiring external op-amp for driving heavy loads.
Availability
LM4041BIM3-1.2 is available at Aetrix Electronics and suitable for battery-powered instrumentation, industrial data acquisition, and automotive body electronics requiring stable component supply with guaranteed long-term availability and traceable sourcing.
Supply support for LM4041BIM3-1.2 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 focused on analog and embedded processing technologies, with decades of expertise in precision analog ICs and automotive-grade components.
The LM4041-N series was designed specifically for space-constrained, low-power applications demanding high initial accuracy and temperature stability - targeting instrumentation, portable test equipment, and automotive subsystems.
FAQ
What is the maximum operating current for LM4041BIM3-1.2?
The LM4041BIM3-1.2 supports a maximum reverse operating current of 12 mA. This allows robust operation under varying load conditions while maintaining regulation within specified voltage tolerance and thermal limits. Exceeding 12 mA risks exceeding absolute maximum power dissipation in the SOT-23 package.
Does LM4041BIM3-1.2 require an external capacitor for stability?
No, the LM4041BIM3-1.2 does not require an external output capacitor. Its internal design ensures stability with any capacitive load up to at least 10 nF, simplifying layout and eliminating capacitor-related aging or ESR-induced drift in precision applications.
Is LM4041BIM3-1.2 qualified for automotive use?
Yes, the LM4041BIM3-1.2 is AEC-Q100 Grade 3 qualified for automotive applications, with guaranteed operation from −40°C to +85°C ambient temperature. It meets stress testing requirements for temperature cycling, humidity, and ESD per AEC-Q100 Rev H.
What is the thermal hysteresis specification for LM4041BIM3-1.2?
The LM4041BIM3-1.2 exhibits 0.08% thermal hysteresis - defined as the voltage difference measured at +25°C after cycling to −40°C versus after cycling to +125°C. This low hysteresis ensures repeatable reference performance during thermal cycling in field-deployed equipment.
Can LM4041BIM3-1.2 be used in adjustable-output configurations?
No, LM4041BIM3-1.2 is a fixed 1.225 V shunt reference. Adjustable versions (e.g., LM4041AIM3-ADJ) exist in the same family but require separate part numbers and different pinouts - the LM4041BIM3-1.2 has no feedback (FB) pin and is not configurable.
LM4041BIM3-1.2 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:
- Obsolete
- Reference Type:
- Shunt
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 1.225V
- Voltage - Output (Max):
- -
- Current - Output:
- 12 mA
- Tolerance:
- ±0.2%
- Temperature Coefficient:
- 100ppm/°C
- Noise - 0.1Hz to 10Hz:
- -
- Noise - 10Hz to 10kHz:
- 20µVrms
- Voltage - Input:
- -
- Current - Supply:
- -
- Current - Cathode:
- 65 µA
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
LM4041BIM3-1.2 FAQ
1.How can I place an order for LM4041BIM3-1.2 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4041BIM3-1.2 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 LM4041BIM3-1.2 reliable?
The price and inventory of LM4041BIM3-1.2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4041BIM3-1.2 is usually 5 days.
3.What payment methods are accepted for LM4041BIM3-1.2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4041BIM3-1.2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4041BIM3-1.2?
LM4041BIM3-1.2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4041BIM3-1.2 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 LM4041BIM3-1.2?
For technical support, including LM4041BIM3-1.2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4041BIM3-1.2 requirements.
6.How does Aetrix verify that LM4041BIM3-1.2 is sourced from the original manufacturer or authorized distributors?
All LM4041BIM3-1.2 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 LM4041BIM3-1.2 meets industry standards.
7.What is the process for return or replacement of LM4041BIM3-1.2?
All LM4041BIM3-1.2 units undergo pre-shipment inspection (PSI). If there is an issue with LM4041BIM3-1.2, 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 LM4041BIM3-1.2 part is unused and in its original packaging.
Return procedure for LM4041BIM3-1.2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM4041BIM3-1.2 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…
