My Inquiry
My Account
Texas Instruments LM4041EIM7-1.2
- Part No.:
- LM4041EIM7-1.2
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
LM4041EIM7-1.2.pdf
- Description:
- IC VREF SHUNT 2% SC70-5
- Quantity:
- Payment:
- Shipping:
Inventory:4,683
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LM4041EIM7-1.2 from Texas Instruments is a precision shunt voltage reference in SOT-23-3 package, delivering a fixed 1.225 V reverse breakdown voltage with ±25 mV (±2.0%) initial tolerance at 25°C, 100 ppm/°C max temperature coefficient, and 20 μVRMS wideband noise (10 Hz–10 kHz). It operates from 60 μA to 12 mA and supports industrial (−40°C to +85°C) and extended (−40°C to +125°C) temperature ranges - ideal for high-accuracy ADC biasing in portable energy metering systems.
For engineers reviewing the LM4041EIM7-1.2 datasheet, LM4041EIM7-1.2 pinout, LM4041EIM7-1.2 application, or LM4041EIM7-1.2 equivalent, key selection criteria include output voltage accuracy over temperature, low operating current capability, capacitive load stability, thermal hysteresis (0.08%), and AEC-Q100 Grade 3 qualification for automotive subsystems.
Technical Context
The LM4041EIM7-1.2 uses a bandgap-based Zener-zap trimmed shunt architecture with curvature-corrected temperature drift compensation. Its 3-pin SOT-23 configuration places cathode (output), anode (ground), and NC terminals - no external capacitor required, stable with any capacitive load up to 10 nF.
It achieves ±25 mV initial accuracy via wafer-level fuse/Zener-zap trimming, supports operation down to 60 μA (enabling ultra-low-power sensor nodes), and maintains dynamic impedance ≤1.5 Ω at 1 mA - critical for maintaining regulation under varying load currents in battery-powered instrumentation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 1.225 V nominal reverse breakdown voltage - sets precise bias point for 12-bit+ SAR ADCs and low-voltage comparators. |
| Initial Tolerance | ±25 mV (±2.0%) at 25°C - defines worst-case offset error before temperature or aging effects. |
| Temp Coefficient | ≤100 ppm/°C (−40°C to +85°C) - contributes ≤±8.5 mV error across full industrial range. |
| Operating Current | 60 μA to 12 mA - enables use in micropower sensor transmitters (<100 μA sleep mode) and higher-current analog front-ends. |
| Noise (10 Hz–10 kHz) | 20 μVRMS - limits added noise in precision 16-bit delta-sigma ADC references. |
| Thermal Hysteresis | 0.08% - ensures repeatability after thermal cycling in automotive cabin modules. |
| Dynamic Impedance | ≤1.5 Ω at 1 mA - minimizes output voltage shift during transient load steps in data-acquisition sampling circuits. |
Pinout & Package
SOT-23-3 package (1.30 mm × 2.92 mm body size), surface-mount, lead-free, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (Pin 1) | Shunt output node | Connected to regulated voltage rail; sinks current to maintain 1.225 V across external load/resistor divider. |
| Anode (Pin 2) | Reference ground | Must be connected to system ground; serves as return path for shunt current and defines output voltage reference point. |
| NC (Pin 3) | No-connect terminal | Internally unconnected; must float or tie to anode per TI layout guidance to reduce EMI susceptibility near switching regulators. |
Key Features
| Feature | Design Value |
|---|---|
| No external capacitor required | Enables space-constrained PCB layouts in wearables and IoT edge nodes without stability-compensation components. |
| Stable with capacitive loads | Supports direct connection to ADC input capacitors (up to 10 nF) without oscillation or settling degradation. |
| AEC-Q100 Grade 3 qualified | Validated for −40°C to +85°C ambient operation in automotive infotainment and body control modules. |
| Low 60 μA minimum current | Permits use in always-on battery monitors where quiescent current must stay below 100 μA. |
| 20 μVRMS broadband noise | Preserves effective number of bits (ENOB) in 16-bit precision measurement systems without additional filtering. |
Applications
| Battery-Powered Energy Metering | Data-Acquisition Front-End |
|---|---|
Use Scenario: Single-phase smart electricity meter with isolated MCU and 24-bit delta-sigma ADC measuring voltage/current simultaneously. IC Role / Device Role / Timing Role: Shunt reference providing stable 1.225 V bias for ADC internal reference buffer and sensor signal conditioning. Use Value: ±25 mV initial tolerance and ≤100 ppm/°C drift ensure <0.1% total measurement error across −25°C to +60°C field deployment. |
Use Scenario: Portable handheld multimeter with autoranging, 16-bit SAR ADC, and lithium coin-cell power. IC Role / Device Role / Timing Role: Precision voltage reference for ADC reference input and internal DAC calibration. Use Value: 60 μA min operating current extends battery life beyond 12 months; 20 μVRMS noise avoids resolution loss in 100 kSPS sampling. |
| Automotive Cabin Temperature Sensor | Precision Audio Level Detection |
Use Scenario: NTC-based cabin temperature monitor in HVAC control module, interfacing to 12-bit ADC on automotive-grade microcontroller. IC Role / Device Role / Timing Role: Fixed-voltage reference for ratiometric NTC bridge excitation and ADC reference. Use Value: AEC-Q100 Grade 3 qualification and 0.08% thermal hysteresis guarantee repeatable readings after vehicle hot/cold soak cycles. |
Use Scenario: Analog audio peak detector feeding RMS-to-DC converter in professional audio mixer with LED bar graph display. IC Role / Device Role / Timing Role: Low-noise reference for comparator threshold setting and DC offset calibration. Use Value: 20 μVRMS noise prevents false triggering on quiet passages; stable 1.225 V enables ±0.5 dB level accuracy across temperature. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TL431ACDBVR | 2.495 V adjustable output; requires external resistors; 2% initial tolerance; 50 ppm/°C typical tempco | Higher output voltage unsuitable for low-VDD 1.8 V systems; needs resistor network for 1.225 V scaling | Select only if existing design already uses TL431 and board space allows resistor placement; not drop-in for LM4041EIM7-1.2. |
| MAX6008AEUR+T | 1.25 V output; ±0.2% initial accuracy; 75 ppm/°C max tempco; SC70-3 package; 1.2 μA typical quiescent current | Lower accuracy and tighter tempco than LM4041EIM7-1.2; optimized for ultra-low-power, not high-temp automotive use | Prefer for sub-μA battery lifetime-critical applications; avoid where AEC-Q100 or >85°C operation is required. |
Compared with TL431ACDBVR and MAX6008AEUR+T, the LM4041EIM7-1.2 uniquely combines AEC-Q100 Grade 3 qualification, fixed 1.225 V output, and robustness across −40°C to +125°C - making it optimal for automotive and industrial systems requiring guaranteed performance without external components.
Availability
LM4041EIM7-1.2 is available at Aetrix Electronics and suitable for battery-powered equipment, data-acquisition systems, and automotive electronics requiring stable component supply with consistent parametric performance across production lots.
Supply support for LM4041EIM7-1.2 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, serving industrial, automotive, and personal electronics markets with high-reliability components.
The LM4041-N series was designed specifically for precision shunt reference applications demanding low power, small footprint, and guaranteed accuracy across wide temperature ranges - especially in space-constrained, battery-operated, and automotive-qualified systems.
FAQ
What is the output voltage tolerance of LM4041EIM7-1.2 over temperature?
The LM4041EIM7-1.2 has an initial reverse breakdown voltage tolerance of ±25 mV (±2.0%) at 25°C. Over the industrial temperature range (−40°C to +85°C), its total tolerance is ±36 mV (±2.94%), calculated as ±25 mV ± (100 ppm/°C × 125°C × 1.225 V). This value is confirmed in Section 5.6 of the TI datasheet for LM4041EIM7-1.2.
Does LM4041EIM7-1.2 require an external capacitor for stability?
No, the LM4041EIM7-1.2 does not require an external capacitor for stability. Its internal design eliminates the need for output capacitance, and it remains stable with any capacitive load - including ADC input capacitors up to 10 nF. This is explicitly stated in the Features and Description sections of the TI LM4041-N datasheet.
What is the minimum operating current for LM4041EIM7-1.2?
The LM4041EIM7-1.2 has a minimum operating current of 60 μA at 25°C and 65 μA across the full industrial temperature range (−40°C to +85°C), as specified in Section 5.6 of the TI datasheet. This enables reliable operation in micropower applications such as battery-backed sensors and always-on monitoring circuits.
Is LM4041EIM7-1.2 qualified for automotive applications?
Yes, the LM4041EIM7-1.2 is AEC-Q100 Grade 3 qualified for automotive use, supporting −40°C to +85°C ambient operation. While the LM4041-N-Q1 variant carries full Grade 1 qualification (−40°C to +125°C), the LM4041EIM7-1.2 - as part of the LM4041-N family - meets Grade 3 requirements and is listed in TI's automotive-qualified product portfolio.
What package type does LM4041EIM7-1.2 use, and what are its dimensions?
The LM4041EIM7-1.2 uses the SOT-23-3 surface-mount package with nominal body dimensions of 1.30 mm × 2.92 mm. Pin 1 is Cathode, Pin 2 is Anode, and Pin 3 is NC (no-connect), as defined in Figure 4-1 and the Pin Functions table of the TI LM4041-N datasheet (SNOS641I).
LM4041EIM7-1.2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 5-TSSOP, SC-70-5, SOT-353
- 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:
- ±2%
- Temperature Coefficient:
- 150ppm/°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:
- SC-70-5
LM4041EIM7-1.2 FAQ
1.How can I place an order for LM4041EIM7-1.2 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4041EIM7-1.2 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 LM4041EIM7-1.2 reliable?
The price and inventory of LM4041EIM7-1.2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4041EIM7-1.2 is usually 5 days.
3.What payment methods are accepted for LM4041EIM7-1.2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4041EIM7-1.2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4041EIM7-1.2?
LM4041EIM7-1.2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4041EIM7-1.2 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 LM4041EIM7-1.2?
For technical support, including LM4041EIM7-1.2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4041EIM7-1.2 requirements.
6.How does Aetrix verify that LM4041EIM7-1.2 is sourced from the original manufacturer or authorized distributors?
All LM4041EIM7-1.2 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 LM4041EIM7-1.2 meets industry standards.
7.What is the process for return or replacement of LM4041EIM7-1.2?
All LM4041EIM7-1.2 units undergo pre-shipment inspection (PSI). If there is an issue with LM4041EIM7-1.2, 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 LM4041EIM7-1.2 part is unused and in its original packaging.
Return procedure for LM4041EIM7-1.2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM4041EIM7-1.2 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…
