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Texas Instruments LM4041DIZ-ADJ/NOPB
- Part No.:
- LM4041DIZ-ADJ/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- TO-226-3, TO-92-3 (TO-226AA)
- Datasheet:
-
LM4041DIZ-ADJ/NOPB.pdf
- Description:
- IC VREF SHUNT ADJ 1% TO92-3
- Quantity:
- Payment:
- Shipping:
Inventory:249
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Product details
Overview
LM4041DIZ-ADJ/NOPB from Texas Instruments is a precision adjustable shunt voltage reference in TO-92 package, delivering 1.233 V reference voltage with ±12 mV (±1.0%) 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 output voltages from 1.24 V to 10 V - ideal for high-accuracy ADC biasing in portable energy metering systems.
For engineers reviewing the LM4041DIZ-ADJ/NOPB datasheet, LM4041DIZ-ADJ/NOPB pinout, LM4041DIZ-ADJ/NOPB application, or LM4041DIZ-ADJ/NOPB equivalent, key selection criteria include its adjustable output range, low thermal hysteresis (0.08%), no-output-capacitor requirement, and AEC-Q100 Grade 3 qualification for industrial-temperature (-40°C to +85°C) operation.
Technical Context
The LM4041DIZ-ADJ/NOPB uses a bandgap-based Zener-zap trimmed shunt architecture with curvature-corrected temperature drift compensation. Its feedback (FB) pin enables external resistor-divider programming of output voltage while maintaining tight regulation across load and temperature.
It achieves stable operation without an output capacitor and tolerates arbitrary capacitive loads - a direct result of low dynamic output impedance (0.3 Ω typical at 1 mA) and optimized internal compensation. The TO-92 package provides robust thermal performance (RθJA = 161.5°C/W) suitable for space-constrained, thermally demanding instrumentation designs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reference Voltage | 1.233 V at 100 μA, VOUT = 5 V - sets precise gain/bias point for analog signal chains |
| Initial Tolerance | ±12 mV (±1.0%) at 25°C - enables single-point calibration in production test |
| Temp Coefficient | ±100 ppm/°C max (−40°C to +85°C) - ensures ≤ ±8.2 mV drift over full industrial range |
| Operating Current | 60 μA to 12 mA - supports ultra-low-power sensor nodes and high-current DAC references |
| Noise (10 Hz–10 kHz) | 20 μVRMS - preserves SNR in 16-bit+ data acquisition front-ends |
| Output Range | 1.24 V to 10 V - configurable via external resistors for diverse supply rail monitoring needs |
| Thermal Hysteresis | 0.08% - guarantees repeatability after thermal cycling in field-deployed equipment |
Pinout & Package
LM4041DIZ-ADJ/NOPB is housed in a 3-pin TO-92 package (4.30 mm × 4.30 mm body), with leads arranged bottom-view per standard JEDEC TO-92 outline. Pin 1 is FB (feedback input), Pin 2 is Cathode (shunt current path/output node), and Pin 3 is Anode (ground reference).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (FB) | Feedback input | High-impedance (≤100 nA) node that sets output voltage via external resistor divider; must be connected to cathode or left floating |
| Pin 2 (Cathode) | Shunt current sink / output node | Primary connection point for regulated output voltage; sinks all excess current to maintain VOUT |
| Pin 3 (Anode) | Ground reference | Low-impedance return path; must be tied to system ground for stable regulation |
Key Features
| Feature | Design Value |
|---|---|
| No output capacitor required | Eliminates BOM cost and board area for stability components in compact designs |
| Tolerates capacitive loads | Enables direct driving of ADC input caps or long PCB traces without oscillation risk |
| Adjustable output (1.24–10 V) | Single part replaces multiple fixed-voltage references across product variants |
| AEC-Q100 Grade 3 qualified | Validated for −40°C to +85°C ambient operation in automotive and industrial control modules |
| Low 20 μVRMS noise | Maintains ≥100 dB SNR in precision measurement applications up to 16-bit resolution |
Applications
| Energy Metering | Data Acquisition |
|---|---|
|
Use Scenario: High-accuracy polyphase electricity meters requiring stable reference for metrology-grade ADCs and isolation amplifiers. IC Role / Device Role / Timing Role: Shunt voltage reference providing programmable 2.5 V or 5 V bias for sigma-delta ADC front-end and anti-aliasing filter op-amps. Use Value: ±1.0% initial tolerance and ±100 ppm/°C TC ensure <0.1% total error contribution over temperature - meeting IEC 62053-21 Class 0.2 accuracy requirements. |
Use Scenario: Portable battery-powered DAQ systems measuring thermocouples, strain gauges, and RTDs in field service tools. IC Role / Device Role / Timing Role: Adjustable reference source for ratiometric excitation and ADC conversion, enabling single-supply 3.3 V operation with 1.24–3.3 V programmability. Use Value: 60 μA minimum operating current extends battery life beyond 1 year in sleep-mode logging; low noise preserves effective resolution in 24-bit delta-sigma converters. |
| Process Control Transmitters | Automotive Sensor Modules |
|
Use Scenario: 4–20 mA loop-powered pressure/flow transmitters operating in harsh factory environments. IC Role / Device Role / Timing Role: Precision shunt reference for current-loop DAC output stage and sensor signal conditioning circuitry. Use Value: Thermal hysteresis of only 0.08% prevents calibration drift after repeated thermal cycling in uncontrolled ambient conditions. |
Use Scenario: Engine control unit (ECU) submodules monitoring coolant temperature, intake air pressure, and throttle position. IC Role / Device Role / Timing Role: AEC-Q100 Grade 3 qualified reference for analog sensor signal chain biasing and diagnostic ADC references. Use Value: Qualified to −40°C to +85°C with 100 ppm/°C TC ensures stable sensor scaling across full automotive ambient range without software compensation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TL431ACLP | Fixed 2.495 V reference; higher 22 Ω dynamic impedance; requires external capacitor for stability | Limited to fixed-voltage use cases; unsuitable for programmable outputs below 2.4 V | Select when cost sensitivity outweighs adjustability and noise performance |
| MAX6126AASA+ | Series reference (not shunt); 1.25 V fixed output; 3 ppm/°C TC; 12 μVRMS noise | Requires dedicated supply rail; incompatible with shunt-based topologies like current-loop drivers | Select for ultra-low-drift applications where series topology and higher supply voltage are acceptable |
Compared with TL431ACLP and MAX6126AASA+, the LM4041DIZ-ADJ/NOPB uniquely combines adjustable output, shunt topology, no-capacitor stability, and AEC-Q100 qualification - making it optimal for space-constrained, programmable, and automotive-qualified analog biasing.
Availability
LM4041DIZ-ADJ/NOPB is available at Aetrix Electronics and suitable for energy metering, portable data acquisition, process control transmitters, and automotive sensor modules requiring stable component supply across extended lifecycle programs.
Supply support for LM4041DIZ-ADJ/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 and embedded processing technologies, with decades of expertise in precision reference design and automotive-grade qualification.
The LM4041-N family was engineered for high-accuracy, low-power, and space-constrained applications - particularly where shunt topology, wide output adjustability, and robust thermal performance are critical in instrumentation, industrial, and automotive systems.
FAQ
What is the maximum output voltage supported by LM4041DIZ-ADJ/NOPB?
The LM4041DIZ-ADJ/NOPB supports an output voltage range of 1.24 V to 10 V, set by external resistor dividers connected to the FB pin. This range is specified under recommended operating conditions (IR = 60 μA to 12 mA) and applies across the industrial temperature range (−40°C to +85°C). Operation above 10 V violates absolute maximum ratings and may cause permanent damage to the LM4041DIZ-ADJ/NOPB.
Does LM4041DIZ-ADJ/NOPB require an output capacitor for stability?
No, the LM4041DIZ-ADJ/NOPB does not require an output capacitor for stability due to its internally compensated shunt architecture. Its design inherently maintains phase margin across all capacitive loads - including ADC input capacitors and long PCB traces - eliminating the need for external stabilization components and simplifying layout for the LM4041DIZ-ADJ/NOPB.
What is the feedback pin (FB) input current specification for LM4041DIZ-ADJ/NOPB?
The FB pin input current for LM4041DIZ-ADJ/NOPB is 60 nA to 100 nA (typical) at 25°C for the D-grade version, rising to ≤120 nA over the full −40°C to +85°C range. This ultra-low bias current minimizes resistor-divider error and enables high-impedance programming networks - a key design advantage of the LM4041DIZ-ADJ/NOPB over alternatives with μA-level FB currents.
Is LM4041DIZ-ADJ/NOPB qualified for automotive applications?
Yes, LM4041DIZ-ADJ/NOPB is AEC-Q100 Grade 3 qualified for industrial temperature operation (−40°C to +85°C ambient), as confirmed in the official Texas Instruments datasheet. While not Grade 1 (−40°C to +125°C), its qualification makes it suitable for cabin and non-engine-compartment automotive subsystems such as body control modules, HVAC sensors, and infotainment power management - where the LM4041DIZ-ADJ/NOPB delivers proven reliability.
How does thermal hysteresis impact long-term accuracy of LM4041DIZ-ADJ/NOPB?
The LM4041DIZ-ADJ/NOPB exhibits 0.08% thermal hysteresis - defined as the voltage difference measured at +25°C after cycling to −40°C versus +125°C. For a 5 V output, this equates to ≤4 mV hysteresis-induced error, which remains stable over time and does not accumulate. This performance ensures repeatable calibration in field-deployed equipment subject to repeated thermal cycling, a critical attribute of the LM4041DIZ-ADJ/NOPB in industrial and automotive applications.
LM4041DIZ-ADJ/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- TO-226-3, TO-92-3 (TO-226AA)
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Reference Type:
- Shunt
- Output Type:
- Adjustable
- Voltage - Output (Min/Fixed):
- 1.233V
- 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:
- 70 µA
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-92-3
LM4041DIZ-ADJ/NOPB FAQ
1.How can I place an order for LM4041DIZ-ADJ/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4041DIZ-ADJ/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 LM4041DIZ-ADJ/NOPB reliable?
The price and inventory of LM4041DIZ-ADJ/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4041DIZ-ADJ/NOPB is usually 5 days.
3.What payment methods are accepted for LM4041DIZ-ADJ/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4041DIZ-ADJ/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4041DIZ-ADJ/NOPB?
LM4041DIZ-ADJ/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4041DIZ-ADJ/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 LM4041DIZ-ADJ/NOPB?
For technical support, including LM4041DIZ-ADJ/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4041DIZ-ADJ/NOPB requirements.
6.How does Aetrix verify that LM4041DIZ-ADJ/NOPB is sourced from the original manufacturer or authorized distributors?
All LM4041DIZ-ADJ/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 LM4041DIZ-ADJ/NOPB meets industry standards.
7.What is the process for return or replacement of LM4041DIZ-ADJ/NOPB?
All LM4041DIZ-ADJ/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM4041DIZ-ADJ/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 LM4041DIZ-ADJ/NOPB part is unused and in its original packaging.
Return procedure for LM4041DIZ-ADJ/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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