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

Diodes Incorporated LM4041DADJFTA

Name: LM4041DADJFTA
Brand: Diodes Incorporated
SKU: LM4041DADJFTA
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: LM4041DADJFTA

Manufacturer:: Diodes Incorporated

Category:: Voltage Reference

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

Datasheet:: LM4041DADJFTA.pdf

Description:: IC VREF SHUNT ADJ 1% SOT23-3

Quantity:: RFQ Add To RFQ list

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Inventory:51,510

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Product details

Overview

LM4041DADJFTA from Diodes Incorporated is an adjustable-precision shunt voltage reference IC with 1.24 V to 10 V output range, ±1% initial tolerance at 25°C, 20 ppm/°C max temperature coefficient, and operates from 60 µA to 12 mA. It uses a bandgap circuit in SOT23-3 package and serves as a stable reference in low-power analog signal chains.

For engineers reviewing the LM4041DADJFTA datasheet, LM4041DADJFTA pinout, LM4041DADJFTA application, or LM4041DADJFTA equivalent, key selection criteria include output adjustability, micro-power operation, capacitive-load stability, and AEC-Q100 Grade 1 qualification for automotive-grade reliability.

Technical Context

The LM4041DADJFTA functions as a two-terminal shunt reference where cathode voltage is set by external resistor divider feedback. Its bandgap core delivers stable reverse breakdown voltage across -40°C to +125°C ambient, with dynamic impedance as low as 0.5 Ω at 1 mA and 120 Hz.

It requires no output capacitor for stability, tolerates wide capacitive loading, and maintains <20 µV_RMS noise (10 Hz–10 kHz) while drawing only 60 µA minimum operating current - enabling use in battery-critical systems without compromising accuracy.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Voltage Range	1.24 V to 10 V - set externally via resistor divider; enables flexible system-level voltage scaling
Initial Tolerance	±1% at 25°C - defines worst-case reference error before calibration or trimming
Temp Coefficient	±20 ppm/°C (max −40°C to +125°C) - ensures ≤0.25% total drift over full industrial range
Operating Current	60 µA to 12 mA - supports ultra-low-power standby and high-accuracy active modes
Noise (10 Hz–10 kHz)	20 µV_RMS - limits contribution to ADC quantization error in precision data acquisition
Dynamic Impedance	0.5 Ω at 1 mA / 120 Hz - minimizes load-induced voltage shift during transient current demand
Long-Term Stability	120 ppm (1000 hrs) - predicts minimal aging drift in mission-critical embedded references

Pinout & Package

LM4041DADJFTA is housed in a 3-pin SOT23-3 surface-mount package with thermal pad omitted. Pin 1 is ANODE, Pin 2 is CATHODE, and Pin 3 is NC (no internal connection). Pin 3 must be left floating or tied to Pin 2 per layout guidance to avoid parasitic conduction paths.

Pin/Terminal	Circuit Role	Design Meaning
Pin 1	ANODE	Current sink terminal; connects to ground or low-impedance return path in shunt configuration
Pin 2	CATHODE	Reference output node; voltage is regulated relative to ANODE; drives feedback divider
Pin 3	N/C	No internal connection; must float or short to Pin 2 to prevent die attachment interference

Key Features

Feature	Design Value
Adjustable output (1.24–10 V)	Enables single BOM item to support multiple system voltage rails without redesigning reference network
No output capacitor required	Eliminates board space, cost, and reliability risk associated with external stabilization caps
AEC-Q100 Grade 1 qualified	Validated for automotive ambient temperatures (−40°C to +125°C) and ESD robustness (4 kV HBM)
Low 60 µA minimum current	Permits operation from coin cells or energy-harvesting sources with sub-100 µA quiescent budgets
20 µV_RMS broadband noise	Preserves effective resolution in 16-bit+ SAR and delta-sigma ADCs without post-filtering

Applications

Battery-Powered Instrumentation

Precision Data Acquisition

Use Scenario: Handheld multimeter with dual-range ADC requiring stable reference under varying battery voltage (2.8–4.2 V).

IC Role / Device Role / Timing Role: Shunt reference providing 2.5 V or 4.096 V scaled output via external resistors.

Use Value: Maintains ±0.1% full-scale accuracy across battery discharge curve and temperature extremes.

Use Scenario: Isolated industrial sensor node digitizing thermocouple or strain gauge signals.

IC Role / Device Role / Timing Role: Primary reference for 24-bit delta-sigma ADC with galvanically isolated power domain.

Use Value: Enables <1 LSB INL error over −40°C to +85°C without on-board calibration.

Automotive Body Control Module

Portable Communications Transceiver

Use Scenario: Low-voltage monitoring circuit in BCM detecting 12 V rail sag during cold cranking.

IC Role / Device Role / Timing Role: Adjustable reference setting threshold at 10.5 V using resistor divider.

Use Value: Meets AEC-Q100 Grade 1 requirements while rejecting supply ripple up to 100 mV_PP.

Use Scenario: RF front-end bias control in LTE/Wi-Fi module where reference stability affects PA linearity.

IC Role / Device Role / Timing Role: Reference for DAC generating precise bias voltages for LNA and mixer stages.

Use Value: Limits LO phase noise degradation to <0.1 dB due to reference-induced supply modulation.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
TLV431ACDBVR	Fixed 1.24 V reference; no external adjustment; 0.5% initial tolerance; higher 70 µA min current	Limited to fixed-voltage use cases; unsuitable for >1.24 V outputs	Select when absolute minimum cost and footprint are prioritized over output flexibility
MAX6008AEUR+T	Adjustable 1.18–10 V; 0.2% initial tolerance; 10 ppm/°C tempco; requires 80 µA min current	Higher accuracy and lower drift, but tighter current compliance and higher cost	Select when long-term stability and temperature performance outweigh micro-power constraints

Compared with TLV431ACDBVR and MAX6008AEUR+T, the LM4041DADJFTA uniquely balances adjustability, micro-power operation (60 µA), and AEC-Q100 qualification - making it optimal for automotive and portable designs needing configurable reference voltage without sacrificing reliability or battery life.

Availability

LM4041DADJFTA is available at Aetrix Electronics and suitable for battery-powered instrumentation, precision data acquisition, and automotive body control modules requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for LM4041DADJFTA 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

Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, specializing in high-reliability power management, signal integrity, and precision analog solutions.

The LM4041 product line delivers micro-power, low-drift shunt references optimized for space-constrained, battery-sensitive, and automotive-qualified applications - emphasizing stability, simplicity, and qualification rigor.

FAQ

What is the minimum cathode-to-anode voltage required for regulation?

The LM4041DADJFTA begins regulating when cathode voltage exceeds 1.24 V above anode potential. Below this threshold, it behaves as a high-impedance open circuit. Regulation is guaranteed only within the 1.24–10 V output range defined by external resistor ratios and input voltage headroom.

Can Pin 3 be connected to ground or left unconnected?

Pin 3 is internally unconnected and must never be grounded. Per Diodes' layout guidance, it must either float or be tied directly to Pin 2 (CATHODE) to prevent unintended conduction through the die attach pad - grounding Pin 3 risks reference instability or device failure.

How does load regulation behave across the 60 µA–12 mA current range?

Load regulation error is specified as ≤10 mV over the full 60 µA–12 mA operating current range at −40°C to +125°C. This corresponds to <0.1% deviation for a 10 V output, achieved via low dynamic impedance (≤2 Ω) and stable bandgap core design.

Is the LM4041DADJFTA compatible with ceramic output capacitors?

Yes - the device is explicitly designed for unconditional stability with capacitive loads up to 1 µF, including X7R and NP0 ceramics. No series resistance or damping is required, simplifying layout and improving transient response in noisy environments.

LM4041DADJFTA Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

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):: 1.24V

Voltage - Output (Max):: 10 V

Current - Output:: 12 mA

Tolerance:: ±1%

Temperature Coefficient:: 150ppm/°C

Noise - 0.1Hz to 10Hz:: -

Noise - 10Hz to 10kHz:: 20µVrms

Voltage - Input:: -

Current - Supply:: -

Current - Cathode:: 73 µA

Operating Temperature:: -40°C ~ 125°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SOT-23-3

LM4041DADJFTA FAQ

1.How can I place an order for LM4041DADJFTA through Aetrix?

Please submit a Request for Quotation (RFQ) for LM4041DADJFTA 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 LM4041DADJFTA reliable?

The price and inventory of LM4041DADJFTA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4041DADJFTA is usually 5 days.

3.What payment methods are accepted for LM4041DADJFTA?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4041DADJFTA transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for LM4041DADJFTA?

LM4041DADJFTA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your LM4041DADJFTA 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 LM4041DADJFTA?

For technical support, including LM4041DADJFTA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4041DADJFTA requirements.

6.How does Aetrix verify that LM4041DADJFTA is sourced from the original manufacturer or authorized distributors?

All LM4041DADJFTA 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 LM4041DADJFTA meets industry standards.

7.What is the process for return or replacement of LM4041DADJFTA?

All LM4041DADJFTA units undergo pre-shipment inspection (PSI). If there is an issue with LM4041DADJFTA, 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 LM4041DADJFTA part is unused and in its original packaging.

Return procedure for LM4041DADJFTA:

1.Submit a request within 90 days.

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

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