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Texas Instruments LM4041BIZ-1.2/NOPB
- Part No.:
- LM4041BIZ-1.2/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- TO-226-3, TO-92-3 (TO-226AA)
- Datasheet:
-
LM4041BIZ-1.2/NOPB.pdf
- Description:
- IC VREF SHUNT 0.2% TO92-3
- Quantity:
- Payment:
- Shipping:
Inventory:1,642
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Product details
Overview
LM4041BIZ-1.2/NOPB from Texas Instruments is a precision 1.225 V shunt voltage reference in TO-92 package, rated for industrial temperature range (−40°C to +85°C), with ±0.2% initial tolerance at 25°C, 100 ppm/°C max tempco, and 20 μVRMS wideband noise (10 Hz–10 kHz). It delivers stable reference voltage for ADC biasing in portable energy metering systems.
For engineers reviewing the LM4041BIZ-1.2/NOPB datasheet, LM4041BIZ-1.2/NOPB pinout, LM4041BIZ-1.2/NOPB application, or LM4041BIZ-1.2/NOPB equivalent, key selection criteria include reverse breakdown voltage accuracy over temperature, low operating current (60 μA min), capacitive load stability, and TO-92 mechanical compatibility in space-constrained instrumentation designs.
Technical Context
The LM4041BIZ-1.2/NOPB implements a bandgap-based shunt reference architecture with curvature-corrected temperature drift compensation. Its Zener-zap trimmed die ensures ±0.2% initial accuracy at 25°C and maintains ≤±10.4 mV total error across −40°C to +85°C.
It operates as a two-terminal device: cathode sinks current to establish regulated 1.225 V across external load/resistor, while anode connects to system ground. No output capacitor is required, and it remains stable with any capacitive load up to 10 nF.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 1.225 V nominal reverse breakdown voltage - sets precise bias point for analog front-ends |
| Initial Tolerance | ±0.2% at 25°C (±2.4 mV) - enables high-resolution 16-bit ADC reference without trimming |
| Tempco | ≤100 ppm/°C - limits drift to ±8.5 mV over full industrial range (−40°C to +85°C) |
| Operating Current | 60 μA to 12 mA - supports ultra-low-power sensor nodes and high-current DAC references |
| Output Noise | 20 μVRMS (10 Hz–10 kHz) - avoids quantization noise floor degradation in precision measurement |
| Dynamic Impedance | 0.5–1.5 Ω at 1 mA - ensures minimal load regulation error (<1 mV) under varying sink current |
| Long-Term Stability | 120 ppm after 1000 hrs - guarantees calibration retention in field-deployed test equipment |
Pinout & Package
LM4041BIZ-1.2/NOPB uses the 3-pin TO-92 through-hole package (4.30 mm × 4.30 mm body), with leads arranged bottom-view per Figure 4-3. Pin 1 is NC (no connect), Pin 2 is Cathode (I/O), Pin 3 is Anode (O, normally grounded).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (NC) | No-connect terminal | Must be left unconnected or tied to anode; no internal connection - prevents EMI coupling in noisy environments |
| Pin 2 (Cathode) | Shunt current input / output node | Sinks current to develop 1.225 V across external resistor; serves as regulated voltage output node |
| Pin 3 (Anode) | Reference ground return | Connected to system ground; forms return path for shunt current and defines voltage reference plane |
Key Features
| Feature | Design Value |
|---|---|
| No external capacitor required | Eliminates BOM cost and PCB area for stabilization cap - simplifies layout in compact meters |
| Capacitive load tolerance | Stable with ≥10 nF load - allows direct buffering with op-amps or driving long traces in data-acquisition boards |
| Low minimum operating current | 60 μA operation - enables use in battery-powered handheld calibrators with multi-year shelf life |
| Reverse breakdown voltage options | Fixed 1.225 V output - avoids external resistor network errors in single-voltage reference applications |
| AEC-Q100 Grade 3 qualified | Qualified for industrial temp range (−40°C to +85°C) - supports deployment in factory automation controllers |
Applications
| Battery-Powered Equipment | Data-Acquisition Systems |
|---|---|
Use Scenario: Portable multimeter with 200-hour battery life using coin-cell supply. IC Role / Device Role / Timing Role: Shunt reference providing stable 1.225 V for 16-bit sigma-delta ADC reference input. Use Value: ±0.2% initial accuracy and 100 ppm/°C tempco ensure <0.01% measurement error across operating temperature. | Use Scenario: 4-channel isolated analog input module for PLC backplane. IC Role / Device Role / Timing Role: Local reference source for each channel's instrumentation amplifier and ADC stage. Use Value: 20 μVRMS noise floor preserves SNR > 90 dB, enabling 100 dB dynamic range measurements. |
| Energy Management/Metering | Instrumentation and Test Equipment |
Use Scenario: DIN-rail mounted kWh meter with Class 0.5 accuracy certification. IC Role / Device Role / Timing Role: Primary voltage reference for metrology-grade ADC measuring phase voltage. Use Value: 120 ppm long-term stability meets IEC 62053-21 10-year calibration retention requirement. | Use Scenario: Benchtop digital multimeter requiring traceable 1 V reference subsystem. IC Role / Device Role / Timing Role: Low-drift shunt reference feeding precision voltage divider and buffer amplifier. Use Value: TO-92 package allows socketed replacement during calibration; ±10.4 mV total error supports 4½-digit accuracy. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM4041CIZ-1.2/NOPB | ±0.5% initial tolerance (vs. ±0.2%), same TO-92 package and 1.225 V output | Lower accuracy acceptable in non-critical biasing; higher grade B preferred for metrology | Select LM4041BIZ-1.2/NOPB when ±0.2% initial error is required for 16-bit+ conversion linearity |
| REF3012AIDBZR | 1.2 V output, SOT-23 package, ±0.2% tolerance, but 50 μA min operating current and 35 μVRMS noise | Surface-mount only; higher noise limits use in low-noise DAQ; lower IQ suits ultra-low-power IoT sensors | Choose LM4041BIZ-1.2/NOPB for through-hole assembly, lower noise, or TO-92 mechanical fit in legacy test gear |
Compared with LM4041CIZ-1.2/NOPB, LM4041BIZ-1.2/NOPB improves initial accuracy by 0.3% absolute, critical for Class 0.5 metering. Against REF3012AIDBZR, it trades SMT compatibility for lower noise and through-hole serviceability-key for calibrated instrumentation repair.
Availability
LM4041BIZ-1.2/NOPB is available at Aetrix Electronics and suitable for energy metering, portable instrumentation, and industrial data-acquisition systems requiring stable component supply with long-lifecycle support.
Supply support for LM4041BIZ-1.2/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 company specializing in analog and embedded processing technologies, with leadership in precision analog ICs since 1930.
The LM4041-N series was designed for high-accuracy, low-power shunt reference applications in space-constrained and thermally variable environments - particularly targeting industrial, energy, and portable test equipment.
FAQ
What is the output voltage tolerance of LM4041BIZ-1.2/NOPB over its full operating temperature range?
The LM4041BIZ-1.2/NOPB has a total reverse breakdown voltage tolerance of ±10.4 mV (±0.85%) across −40°C to +85°C. This combines its ±0.2% initial error at 25°C and ±100 ppm/°C temperature coefficient applied over the 125°C ΔT span, verified per TI's Electrical Characteristics Table 5.5. The value is guaranteed for the B-grade device in TO-92 packaging.
Can LM4041BIZ-1.2/NOPB drive a 10 nF capacitive load without oscillation?
Yes, LM4041BIZ-1.2/NOPB is explicitly characterized for stability with any capacitive load, including ≥10 nF, per the "Tolerates capacitive loads" feature in the datasheet. Its internal design eliminates need for external compensation, making it suitable for direct connection to ADC reference inputs or op-amp buffers with long PCB traces.
What is the minimum operating current required for LM4041BIZ-1.2/NOPB to maintain regulation?
The LM4041BIZ-1.2/NOPB requires a minimum operating current of 60 μA at 25°C to maintain specified reverse breakdown voltage accuracy. At temperature extremes (−40°C or +85°C), this increases to 65 μA. Below this threshold, regulation degrades - critical for ultra-low-power wake-up circuits where bias current must be carefully budgeted.
Is LM4041BIZ-1.2/NOPB qualified for automotive applications?
No, LM4041BIZ-1.2/NOPB is not automotive-qualified. It is rated for industrial temperature range (−40°C to +85°C) and carries AEC-Q100 Grade 3 qualification. For automotive use, TI offers the LM4041-N-Q1 series (e.g., LM4041QBIM3), which is AEC-Q100 Grade 1 qualified (−40°C to +125°C) and marked with Q1 suffix.
How does the TO-92 package of LM4041BIZ-1.2/NOPB affect thermal performance compared to SOT-23?
The TO-92 package of LM4041BIZ-1.2/NOPB provides lower junction-to-ambient thermal resistance (161.5°C/W) than SOT-23 (291.9°C/W), improving power dissipation capability. At 12 mA sink current and 1.225 V drop, power dissipation is ~14.7 mW - well within the 550 mW TO-92 rating, allowing reliable operation without heatsinking in enclosed enclosures.
LM4041BIZ-1.2/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:
- Fixed
- Voltage - Output (Min/Fixed):
- 1.225V
- Voltage - Output (Max):
- -
- Current - Output:
- 12 mA
- Tolerance:
- ±0.2%
- Temperature Coefficient:
- 100ppm/°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:
- Through Hole
- Supplier Device Package:
- TO-92-3
LM4041BIZ-1.2/NOPB FAQ
1.How can I place an order for LM4041BIZ-1.2/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4041BIZ-1.2/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 LM4041BIZ-1.2/NOPB reliable?
The price and inventory of LM4041BIZ-1.2/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4041BIZ-1.2/NOPB is usually 5 days.
3.What payment methods are accepted for LM4041BIZ-1.2/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4041BIZ-1.2/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4041BIZ-1.2/NOPB?
LM4041BIZ-1.2/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4041BIZ-1.2/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 LM4041BIZ-1.2/NOPB?
For technical support, including LM4041BIZ-1.2/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4041BIZ-1.2/NOPB requirements.
6.How does Aetrix verify that LM4041BIZ-1.2/NOPB is sourced from the original manufacturer or authorized distributors?
All LM4041BIZ-1.2/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 LM4041BIZ-1.2/NOPB meets industry standards.
7.What is the process for return or replacement of LM4041BIZ-1.2/NOPB?
All LM4041BIZ-1.2/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM4041BIZ-1.2/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 LM4041BIZ-1.2/NOPB part is unused and in its original packaging.
Return procedure for LM4041BIZ-1.2/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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