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

Texas Instruments LM4050AIM3-10/NOPB

Name: LM4050AIM3-10/NOPB
Brand: Texas Instruments
SKU: LM4050AIM3-10/NOPB
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: LM4050AIM3-10/NOPB

Manufacturer:: Texas Instruments

Category:: Voltage Reference

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

Datasheet:: LM4050AIM3-10/NOPB.pdf

Description:: IC VREF SHUNT 0.1% SOT23-3

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Product details

Overview

LM4050AIM3-10/NOPB from Texas Instruments is a precision micropower shunt voltage reference with 10 V nominal reverse breakdown voltage, ±0.1% initial tolerance (A grade), 50 ppm/°C max temperature coefficient, and 100 μA minimum operating current. It operates across −40°C to 125°C, delivers stable output without external capacitors, and serves as a high-accuracy voltage reference in analog-to-digital converters and sensor signal conditioning circuits.

For engineers reviewing the LM4050AIM3-10/NOPB datasheet, LM4050AIM3-10/NOPB pinout, LM4050AIM3-10/NOPB application, or LM4050AIM3-10/NOPB equivalent, key selection criteria include its 10 V fixed output, SOT-23 package compatibility with space-constrained PCBs, low 150 μV_rms wideband noise (10 Hz–10 kHz), and guaranteed stability under capacitive loads up to 15 mA.

Technical Context

The LM4050AIM3-10/NOPB uses bandgap reference architecture with curvature-corrected temperature drift compensation and Zener-zap wafer-level trimming to achieve ±0.1% accuracy at 25°C. Its shunt topology requires an external current-limiting resistor and sinks load current through the cathode terminal.

It features low dynamic impedance (0.7 Ω typical at 1 mA), thermal hysteresis of 2.8 mV over −40°C to 125°C cycling, and long-term stability of 120 ppm after 1000 hours - all specified for the 10 V variant with 150 μA test current per Electrical Characteristics Section 6.10.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Voltage	10 V nominal reverse breakdown voltage, trimmed at wafer sort for A-grade accuracy
Initial Tolerance	±0.1% at 25°C - enables high-resolution ADC biasing without calibration
Temp Coefficient	50 ppm/°C max over −40°C to 125°C - ensures <±5.5 mV drift across full range
Min Operating Current	100 μA - sets minimum bias resistor value for reliable regulation
Max Operating Current	15 mA - defines upper limit for shunt current handling capability
Wideband Noise	150 μV_rms (10 Hz–10 kHz) - critical for low-noise precision measurement front-ends
Dynamic Impedance	0.7 Ω typical at 1 mA - minimizes output voltage shift under varying load currents

Pinout & Package

SOT-23 (DBZ) package: 2.92 mm × 1.30 mm body, 3-pin surface-mount, JEDEC MO-178AC compliant. Pin 1 = Cathode (shunt current input), Pin 2 = Anode (ground reference), Pin 3 = NC (no internal connection).

Pin/Terminal	Circuit Role	Design Meaning
Cathode (Pin 1)	Shunt current sink / reference voltage node	Connects to regulated output node via series resistor; carries total current (I_Z + I_L)
Anode (Pin 2)	Ground reference terminal	Must be connected to system ground; establishes 0 V reference for 10 V output
NC (Pin 3)	No internal connection	Must remain unconnected or floating; no electrical function or thermal role

Key Features

Feature	Design Value
No output capacitor required	Stable operation with any capacitive load - eliminates BOM cost and layout area for stabilization cap
Tolerates capacitive loads	Guaranteed stability up to 15 mA sink current into arbitrary capacitance - simplifies filtering design
Fixed 10 V breakdown	Factory-trimmed 10 V output - avoids external resistor networks needed in adjustable references
Low temperature coefficient	50 ppm/°C max - reduces calibration burden in industrial and automotive environments
Wide operating current range	100 μA to 15 mA - supports ultra-low-power battery systems and higher-current data acquisition rails

Applications

Portable Instrumentation	Data Acquisition Systems
Use Scenario: Handheld multimeter with 16-bit SAR ADC requiring stable 10 V reference for full-scale range. IC Role / Device Role / Timing Role: Shunt voltage reference providing precise 10 V reference to ADC's VREF pin. Use Value: ±0.1% initial tolerance and 50 ppm/°C TC ensure <±0.05% full-scale error over temperature without recalibration.	Use Scenario: Industrial PLC analog input module digitizing 4–20 mA sensor signals with 24-bit delta-sigma ADC. IC Role / Device Role / Timing Role: Precision 10 V reference for ADC reference buffer and sensor excitation circuitry. Use Value: 150 μV_rms noise floor and 0.7 Ω dynamic impedance maintain ENOB >20 bits in high-resolution measurements.
Energy Management Systems	Precision Audio Components
Use Scenario: Smart meter power monitoring IC measuring line voltage via resistive divider with 10 V reference scaling. IC Role / Device Role / Timing Role: Stable 10 V reference for analog front-end gain stages and ADC reference path. Use Value: Long-term stability of 120 ppm/1000 hrs ensures metrology-grade accuracy compliance over product lifetime.	Use Scenario: High-fidelity DAC output stage requiring ultra-low-noise 10 V bias for op-amp rail splitting. IC Role / Device Role / Timing Role: Low-noise shunt reference supplying clean 10 V to active filter and output buffer rails. Use Value: 150 μV_rms noise (10 Hz–10 kHz) directly limits THD+N floor in audio signal chain.

Portable Instrumentation

Data Acquisition Systems

Use Scenario: Handheld multimeter with 16-bit SAR ADC requiring stable 10 V reference for full-scale range.

IC Role / Device Role / Timing Role: Shunt voltage reference providing precise 10 V reference to ADC's VREF pin.

Use Value: ±0.1% initial tolerance and 50 ppm/°C TC ensure <±0.05% full-scale error over temperature without recalibration.

Use Scenario: Industrial PLC analog input module digitizing 4–20 mA sensor signals with 24-bit delta-sigma ADC.

IC Role / Device Role / Timing Role: Precision 10 V reference for ADC reference buffer and sensor excitation circuitry.

Use Value: 150 μV_rms noise floor and 0.7 Ω dynamic impedance maintain ENOB >20 bits in high-resolution measurements.

Energy Management Systems

Precision Audio Components

Use Scenario: Smart meter power monitoring IC measuring line voltage via resistive divider with 10 V reference scaling.

IC Role / Device Role / Timing Role: Stable 10 V reference for analog front-end gain stages and ADC reference path.

Use Value: Long-term stability of 120 ppm/1000 hrs ensures metrology-grade accuracy compliance over product lifetime.

Use Scenario: High-fidelity DAC output stage requiring ultra-low-noise 10 V bias for op-amp rail splitting.

IC Role / Device Role / Timing Role: Low-noise shunt reference supplying clean 10 V to active filter and output buffer rails.

Use Value: 150 μV_rms noise (10 Hz–10 kHz) directly limits THD+N floor in audio signal chain.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
REF5010IDR	Series reference (not shunt); 10 V output; 3 ppm/°C TC; requires input voltage >10.5 V	Needs higher supply headroom; lower noise (4.8 μV_rms) but larger SOIC-8 package	Select when supply margin allows series topology and ultra-low drift is prioritized over size/cost
ADR4510BRZ	Series reference; 10 V output; 3 ppm/°C TC; 10 μV_p-p (0.1–10 Hz); SOIC-8	Requires ≥11.5 V input; superior low-frequency noise performance; not pin-compatible	Choose for metrology-grade systems where supply裕度 and noise below 10 Hz dominate design requirements

Compared with REF5010IDR and ADR4510BRZ, the LM4050AIM3-10/NOPB offers direct shunt integration in low-headroom designs, SOT-23 footprint for space-constrained layouts, and proven stability with capacitive loads - making it optimal for portable, battery-powered, and cost-sensitive precision analog systems.

Availability

LM4050AIM3-10/NOPB is available at Aetrix Electronics and suitable for portable instrumentation, energy management systems, and precision data acquisition requiring stable component supply across industrial and extended temperature ranges.

Supply support for LM4050AIM3-10/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, embedded processing, and digital signal technologies, with decades of expertise in precision reference design.

The LM4050-N family was engineered for space-constrained, micropower applications demanding high initial accuracy and low temperature drift - targeting portable test equipment, industrial sensors, and automotive subsystems.

FAQ

What is the minimum operating current for LM4050AIM3-10/NOPB?

The LM4050AIM3-10/NOPB requires a minimum operating current of 100 μA to maintain regulation, as specified in Section 6.10 of the datasheet. This value is higher than lower-voltage variants (e.g., 60 μA for 2.048 V) due to increased Zener impedance at 10 V. Below this threshold, the device exits regulation and output voltage drops nonlinearly.

Does LM4050AIM3-10/NOPB require an external capacitor for stability?

No, the LM4050AIM3-10/NOPB does not require an external output capacitor for stability. Its internal design ensures unconditional stability with any capacitive load, including bypass caps used in ADC reference paths or op-amp supplies - a key advantage over older shunt references that mandate minimum capacitance.

What is the maximum junction temperature rating for LM4050AIM3-10/NOPB?

The absolute maximum junction temperature for LM4050AIM3-10/NOPB is 150°C, per Section 6.1 of the datasheet. Derating is required above ambient temperatures: at TA = 85°C, maximum allowable power dissipation is ~224 mW (calculated as (150°C − 85°C)/287°C/W), well within its 280 mW rating at 25°C.

How does the temperature coefficient of LM4050AIM3-10/NOPB affect accuracy over −40°C to 125°C?

With a maximum temperature coefficient of 50 ppm/°C, the LM4050AIM3-10/NOPB contributes up to ±5.5 mV (±0.055%) additional error over its full operating range relative to 25°C. Combined with its ±0.1% initial tolerance, total worst-case error remains within ±0.155% - sufficient for 12-bit to 14-bit system accuracy without trimming.

Is LM4050AIM3-10/NOPB qualified for automotive applications?

No, LM4050AIM3-10/NOPB is not AEC-Q100 qualified. The automotive-grade variant is LM4050QAIM3-10/NOPB (LM4050-N-Q1 series), which undergoes additional stress testing and is manufactured on an automotive-grade flow. For safety-critical vehicle systems, only the Q1 version should be used.

LM4050AIM3-10/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:: Fixed

Voltage - Output (Min/Fixed):: 10V

Voltage - Output (Max):: -

Current - Output:: 15 mA

Tolerance:: ±0.1%

Temperature Coefficient:: 50ppm/°C

Noise - 0.1Hz to 10Hz:: -

Noise - 10Hz to 10kHz:: 150µVrms

Voltage - Input:: -

Current - Supply:: -

Current - Cathode:: 103 µA

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SOT-23-3

LM4050AIM3-10/NOPB FAQ

1.How can I place an order for LM4050AIM3-10/NOPB through Aetrix?

Please submit a Request for Quotation (RFQ) for LM4050AIM3-10/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 LM4050AIM3-10/NOPB reliable?

The price and inventory of LM4050AIM3-10/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4050AIM3-10/NOPB is usually 5 days.

3.What payment methods are accepted for LM4050AIM3-10/NOPB?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4050AIM3-10/NOPB transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for LM4050AIM3-10/NOPB?

LM4050AIM3-10/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your LM4050AIM3-10/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 LM4050AIM3-10/NOPB?

For technical support, including LM4050AIM3-10/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4050AIM3-10/NOPB requirements.

6.How does Aetrix verify that LM4050AIM3-10/NOPB is sourced from the original manufacturer or authorized distributors?

All LM4050AIM3-10/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 LM4050AIM3-10/NOPB meets industry standards.

7.What is the process for return or replacement of LM4050AIM3-10/NOPB?

All LM4050AIM3-10/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM4050AIM3-10/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 LM4050AIM3-10/NOPB part is unused and in its original packaging.

Return procedure for LM4050AIM3-10/NOPB:

1.Submit a request within 90 days.

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

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