Send an Inquiry

To receive a quote for your project, please fill in the following information, and we’ll get back to you promptly.

Submit Inventory List

Please fill in the following information, and we’ll get back to you promptly.

Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Voltage Reference

Texas Instruments LM4041A12IDBZRG4

Name: LM4041A12IDBZRG4
Brand: Texas Instruments
SKU: LM4041A12IDBZRG4
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: LM4041A12IDBZRG4

Manufacturer:: Texas Instruments

Category:: Voltage Reference

Package:: TO-236-3, SC-59, SOT-23-3

Datasheet:: LM4041A12IDBZRG4.pdf

Description:: IC VREF SHUNT 0.1% SOT23-3

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:2,409

Please send an inquiry. Send us your inquiry, and we will respond immediately.

Product details

Overview

LM4041A12IDBZRG4 from Texas Instruments is a precision micropower shunt voltage reference with fixed 1.225 V output, ±0.1% initial tolerance (A grade), 100 ppm/°C max temperature coefficient, 20 μV_RMS wideband noise, and stable operation from 45 μA to 12 mA cathode current. It serves as a low-drift, low-noise voltage reference in high-accuracy analog signal chains and portable power monitoring circuits.

For engineers reviewing the LM4041A12IDBZRG4 datasheet, LM4041A12IDBZRG4 pinout, LM4041A12IDBZRG4 application, or LM4041A12IDBZRG4 equivalent, this page delivers verified specifications, SOT-23-3 pin mapping, industrial-temperature (–40°C to 85°C) performance data, and real-world design context for precision voltage referencing in space-constrained systems.

Technical Context

The LM4041A12IDBZRG4 implements a Zener-based shunt reference architecture trimmed via fuse and Zener-zap during wafer sort to achieve ±0.1% output tolerance at 25°C. Its dynamic impedance remains ≤1.5 Ω at 1 mA, enabling stable regulation under varying load and supply conditions without requiring an output capacitor.

It operates as a two-terminal device (anode grounded, cathode supplying reference voltage) with no feedback pin - confirming it is the fixed-output variant (not adjustable). The DBZ package (SOT-23-3) uses pins 1=Cathode, 2=Anode, 3=NC (must float or tie to anode), per TI's official pinout documentation.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Voltage	1.225 V nominal, fixed - provides precise, factory-trimmed reference without external resistors.
Initial Tolerance	±0.1% at 25°C (A grade) - enables high-accuracy calibration in data acquisition and metering without post-manufacture trimming.
Temp Coefficient	100 ppm/°C max (full –40°C to 85°C range) - ensures <±0.85 mV drift over industrial temperature span.
Output Noise	20 μV_RMS (10 Hz–10 kHz) - supports low-noise ADCs and precision instrumentation amplifiers.
Operating Current	45 μA (min) to 12 mA (max) - allows ultra-low-power sensor nodes and robust operation in high-current supervision circuits.
Dynamic Impedance	≤1.5 Ω at 1 mA - maintains tight regulation despite rapid load transients in power-supply monitor applications.
Long-Term Stability	120 ppm (1000 h @ 25°C) - ensures reference integrity over extended product lifetimes in energy metering and industrial control.

Pinout & Package

SOT-23-3 (DBZ) package: 2.92 mm × 1.3 mm × 1.0 mm body, surface-mount, RoHS-compliant, moisture sensitivity level 1 (260°C peak reflow).

Pin/Terminal	Circuit Role	Design Meaning
1 (Cathode)	Shunt output node	Delivers regulated 1.225 V; sinks total current (load + reference bias); connects to supply rail via series resistor.
2 (Anode)	Reference ground reference	Must be connected to system ground; forms return path for cathode current; defines reference potential.
3 (NC)	No-connect terminal	Must remain floating or tied to Pin 2 (anode); not internally connected - avoids EMI coupling in noisy environments.

Key Features

Feature	Design Value
Capacitor-free stability	Operates stably with any capacitive load (0–∞), eliminating need for output bypass capacitor and reducing BOM count.
Micropower operation	45 μA minimum cathode current enables use in battery-powered devices with multi-year runtime requirements.
Low thermal drift	100 ppm/°C max tempco ensures <±0.85 mV error across full industrial temperature range (–40°C to 85°C).
High ESD robustness	±2000 V HBM rating protects against handling damage during assembly and field service.
Wide current range	Supports both ultra-low-current sensing (e.g., 50 μA microcontroller VREF) and high-current supervision (e.g., 10 mA power-rail monitor).

Applications

Data-Acquisition Systems	Power-Supply Monitors
Use Scenario: High-resolution 16-bit SAR ADC front-end requiring sub-LSB reference stability over temperature and time. IC Role / Device Role / Timing Role: Fixed-voltage reference source for ADC internal conversion reference and external signal conditioning. Use Value: ±0.1% tolerance and 100 ppm/°C tempco limit total reference error to <0.02% FS across –40°C to 85°C, preserving ENOB.	Use Scenario: Monitoring 3.3 V or 5 V rails in industrial PLC I/O modules for brownout detection and fault logging. IC Role / Device Role / Timing Role: Shunt reference in comparator-based over/under-voltage supervisor circuit. Use Value: Stable 1.225 V reference enables accurate scaling of rail voltage via resistor divider, with <±1.5 mV total error at end-of-life.
Energy Metering	Battery-Powered Equipment
Use Scenario: Revenue-grade electricity meter requiring metrology-grade voltage reference for ADC sampling of current/voltage waveforms. IC Role / Device Role / Timing Role: Primary reference for isolated sigma-delta ADC measuring mains voltage and current. Use Value: 120 ppm long-term stability and 20 μV_RMS noise ensure <0.1% energy measurement accuracy over 10-year field deployment.	Use Scenario: Coin-cell–powered environmental sensor node (temperature/humidity) operating for >5 years on a single CR2032. IC Role / Device Role / Timing Role: Low-quiescent reference for MCU ADC and analog front-end amplifier biasing. Use Value: 45 μA minimum operating current allows continuous reference operation while consuming <0.15 μW - negligible vs. sensor sleep current.

Data-Acquisition Systems

Power-Supply Monitors

Use Scenario: High-resolution 16-bit SAR ADC front-end requiring sub-LSB reference stability over temperature and time.

IC Role / Device Role / Timing Role: Fixed-voltage reference source for ADC internal conversion reference and external signal conditioning.

Use Value: ±0.1% tolerance and 100 ppm/°C tempco limit total reference error to <0.02% FS across –40°C to 85°C, preserving ENOB.

Use Scenario: Monitoring 3.3 V or 5 V rails in industrial PLC I/O modules for brownout detection and fault logging.

IC Role / Device Role / Timing Role: Shunt reference in comparator-based over/under-voltage supervisor circuit.

Use Value: Stable 1.225 V reference enables accurate scaling of rail voltage via resistor divider, with <±1.5 mV total error at end-of-life.

Energy Metering

Battery-Powered Equipment

Use Scenario: Revenue-grade electricity meter requiring metrology-grade voltage reference for ADC sampling of current/voltage waveforms.

IC Role / Device Role / Timing Role: Primary reference for isolated sigma-delta ADC measuring mains voltage and current.

Use Value: 120 ppm long-term stability and 20 μV_RMS noise ensure <0.1% energy measurement accuracy over 10-year field deployment.

Use Scenario: Coin-cell–powered environmental sensor node (temperature/humidity) operating for >5 years on a single CR2032.

IC Role / Device Role / Timing Role: Low-quiescent reference for MCU ADC and analog front-end amplifier biasing.

Use Value: 45 μA minimum operating current allows continuous reference operation while consuming <0.15 μW - negligible vs. sensor sleep current.

Equivalent & Alternatives

The following parts are listed as comparable options for similar shunt voltage reference applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
LM4041C12IDBZRG4	±0.5% initial tolerance, same 100 ppm/°C tempco and 20 μV_RMS noise	Acceptable where calibration is performed at system level; lower cost for non-critical references	Select when budget constraints outweigh need for factory-trimmed 0.1% accuracy.
TLV431ACDBVR	Adjustable 1.24 V reference (1.24–18 V), ±0.5% tolerance, higher 300 ppm/°C tempco, 25 μV_RMS noise	Used where programmable output or higher voltage is required; less stable over temperature	Choose only if adjustable output or >1.225 V is mandatory; avoid for metrology-grade fixed-reference needs.

Compared with LM4041C12IDBZRG4, the LM4041A12IDBZRG4 delivers 5× tighter initial tolerance without sacrificing noise or tempco - critical for uncalibrated systems. Versus TLV431ACDBVR, it offers superior stability and lower noise but lacks adjustability, making it optimal for fixed-precision roles.

Availability

LM4041A12IDBZRG4 is available at Aetrix Electronics and suitable for data-acquisition systems, power-supply monitors, and energy metering applications requiring stable component supply with guaranteed long-term availability and traceable sourcing.

Supply support for LM4041A12IDBZRG4 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 high-reliability manufacturing.

The LM4041 product line delivers micropower, low-drift shunt references optimized for portable instrumentation, industrial sensing, and energy infrastructure - prioritizing accuracy, stability, and ease of use in minimal footprint packages.

FAQ

What is the output voltage and tolerance of the LM4041A12IDBZRG4?

The LM4041A12IDBZRG4 provides a fixed 1.225 V output voltage with ±0.1% initial tolerance at 25°C (A grade), verified across the full –40°C to 85°C operating range. This tight tolerance eliminates need for system-level calibration in high-accuracy applications like precision ADCs and energy meters. The LM4041A12IDBZRG4 achieves this via wafer-level Zener-zap trimming and is specified in TI's SLCS146H datasheet Section 5.4.

Does the LM4041A12IDBZRG4 require an output capacitor for stability?

No, the LM4041A12IDBZRG4 is inherently stable with all capacitive loads and does not require an output capacitor between cathode and anode. Its design ensures stability from 0 pF to unlimited capacitance, simplifying layout and reducing BOM count. This behavior is confirmed in Section 7.1 of the TI datasheet and applies specifically to the fixed-output LM4041A12IDBZRG4 variant.

What is the operating current range for the LM4041A12IDBZRG4?

The LM4041A12IDBZRG4 operates over a cathode current range of 45 μA (typical minimum) to 12 mA (maximum), supporting both ultra-low-power sensor nodes and higher-current supervision tasks. At 45 μA, it maintains regulation with <2 mV deviation; at 12 mA, dynamic impedance stays ≤1.5 Ω. These values are measured per Section 5.4 of the LM4041A12IDBZRG4 datasheet.

Which package and pinout does the LM4041A12IDBZRG4 use?

The LM4041A12IDBZRG4 uses the SOT-23-3 (DBZ) package with pin 1 = Cathode, pin 2 = Anode (ground), and pin 3 = NC (no-connect, must float or tie to pin 2). This mapping is explicitly defined in Figure 4-1 and Table "Pin Functions" of the TI SLCS146H datasheet. The DBZ package measures 2.92 mm × 1.3 mm and is RoHS-compliant with MSL Level-1 rating.

How does the LM4041A12IDBZRG4 compare to the adjustable LM4041 variants?

The LM4041A12IDBZRG4 is a fixed-output variant (1.225 V) with no feedback (FB) pin, unlike adjustable versions (e.g., LM4041BIDBZRG4) that require external resistors and use a dedicated FB pin. It offers superior initial accuracy (±0.1%) and simpler implementation but lacks output flexibility. All LM4041 variants share identical noise (20 μV_RMS) and tempco (100 ppm/°C) specs per TI's characterization.

LM4041A12IDBZRG4 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:: ±0.1%

Temperature Coefficient:: 100ppm/°C

Noise - 0.1Hz to 10Hz:: -

Noise - 10Hz to 10kHz:: 20µVrms

Voltage - Input:: -

Current - Supply:: -

Current - Cathode:: 80 µA

Operating Temperature:: -40°C ~ 85°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SOT-23-3

LM4041A12IDBZRG4 FAQ

1.How can I place an order for LM4041A12IDBZRG4 through Aetrix?

Please submit a Request for Quotation (RFQ) for LM4041A12IDBZRG4 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 LM4041A12IDBZRG4 reliable?

The price and inventory of LM4041A12IDBZRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4041A12IDBZRG4 is usually 5 days.

3.What payment methods are accepted for LM4041A12IDBZRG4?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4041A12IDBZRG4 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for LM4041A12IDBZRG4?

LM4041A12IDBZRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your LM4041A12IDBZRG4 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 LM4041A12IDBZRG4?

For technical support, including LM4041A12IDBZRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4041A12IDBZRG4 requirements.

6.How does Aetrix verify that LM4041A12IDBZRG4 is sourced from the original manufacturer or authorized distributors?

All LM4041A12IDBZRG4 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 LM4041A12IDBZRG4 meets industry standards.

7.What is the process for return or replacement of LM4041A12IDBZRG4?

All LM4041A12IDBZRG4 units undergo pre-shipment inspection (PSI). If there is an issue with LM4041A12IDBZRG4, 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 LM4041A12IDBZRG4 part is unused and in its original packaging.

Return procedure for LM4041A12IDBZRG4:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

Tech Hub

2026-09-03 Logic Level Shifter: How to Connect 3.3V and 5V Logic Safely

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.

2026-09-03 74HC595 vs TPIC6B595: Output Drive, Pinout, Current, and Load Selection

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…

2026-09-01 74HC595 Pinout, Timing, Output Current, and Applications

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…

2026-09-01 Latch vs Flip-Flop: Timing, Differences and Design Choices

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…

2026-08-30 D Latch Circuit: Truth Table, Timing, ICs and Applications

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 …

2026-08-28 SR Latch Explained: NOR and NAND Circuits, Truth Tables, and Applications

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…

2026-08-27 Latch Circuit: SR and D Latches, Truth Tables, Timing, and Applications

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…

2026-08-21 What Is an LED Driver? Types, Circuits, Dimming, and Selection

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…

2026-08-18 Operational Amplifier (Op Amp): Basics, Configurations, Feedback and Applications

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…

2026-08-14 Jumper Cables: How to Use, Connect and Choose Them Safely

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…