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Texas Instruments LM4040AIZ-3.0/NOPB
- Part No.:
- LM4040AIZ-3.0/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- TO-226-3, TO-92-3 (TO-226AA)
- Datasheet:
-
LM4040AIZ-3.0/NOPB.pdf
- Description:
- IC VREF SHUNT 0.1% TO92-3
- Quantity:
- Payment:
- Shipping:
Inventory:4,825
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Product details
Overview
LM4040AIZ-3.0/NOPB from Texas Instruments is a precision micropower shunt voltage reference in TO-92 package, delivering a stable 3.0 V reverse breakdown voltage with ±0.1% initial tolerance (A grade) at 25°C, 100 ppm/°C max temperature coefficient, and 35 μVrms wideband noise (10 Hz–10 kHz). It operates from 62 μA to 15 mA and supports industrial (−40°C to +85°C) and extended (−40°C to +125°C) temperature ranges - ideal for high-accuracy ADC/DAC biasing in portable instrumentation.
For engineers reviewing the LM4040AIZ-3.0/NOPB datasheet, LM4040AIZ-3.0/NOPB pinout, LM4040AIZ-3.0/NOPB application, or LM4040AIZ-3.0/NOPB equivalent, key selection criteria include guaranteed 3.0 V output accuracy over temperature, ultra-low operating current headroom, no external capacitor requirement, and TO-92 through-hole compatibility for legacy or cost-sensitive designs.
Technical Context
The LM4040AIZ-3.0/NOPB uses Zener-zap trimming during wafer sort to achieve ±0.1% initial voltage accuracy, combined with bandgap-derived curvature correction for low temperature drift. Its shunt architecture requires an external series resistor but eliminates need for output capacitance while maintaining stability with any capacitive load.
It features low dynamic impedance (≤0.9 Ω at 1 mA), thermal hysteresis of ≤0.08%, and long-term stability of 120 ppm after 1000 hours - enabling reliable performance in battery-powered data loggers and sensor signal conditioning where supply headroom is constrained.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 3.0 V nominal reverse breakdown voltage, tightly regulated across 62 μA–15 mA operating current range |
| Initial Tolerance | ±0.1% at 25°C (A grade), enabling direct use in 12-bit+ systems without calibration |
| Temp Coefficient | ≤100 ppm/°C (max), ensuring ≤±19 mV total drift over −40°C to +85°C |
| Noise (10 Hz–10 kHz) | 35 μVrms, minimizing added error in precision analog front-ends |
| Dynamic Impedance | ≤0.9 Ω at 1 mA, providing stable regulation under varying load conditions |
| Operating Temp Range | −40°C to +125°C, supporting automotive under-hood and industrial control environments |
| Long-Term Stability | 120 ppm after 1000 hrs, reducing recalibration frequency in field-deployed equipment |
Pinout & Package
LM4040AIZ-3.0/NOPB is housed in a 3-pin TO-92 package (body size 4.30 mm × 4.30 mm), with leads designed for through-hole mounting and standard JEDEC lead-forming compatibility.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | Reference ground node | Internally connected to substrate; must be tied to system ground for proper shunt operation |
| Cathode (Pin 2) | Shunt current input / output voltage node | Connects to supply rail via series resistor; regulated 3.0 V appears between Cathode and Anode |
| NC (Pin 3) | No-connect terminal | Electrically isolated; must remain unconnected or tied to Anode per datasheet guidance |
Key Features
| Feature | Design Value |
|---|---|
| No output capacitor required | Enables space-constrained PCB layouts and eliminates capacitor aging/reliability concerns |
| Tolerates capacitive loads | Stable operation with up to 10 nF directly at cathode, simplifying filtering in noisy environments |
| Micropower operation | 62 μA minimum operating current allows use in multi-year battery applications |
| Zener-zap trimmed accuracy | Ensures ±0.1% initial tolerance without post-package calibration or sorting |
| Wide current range | Supports 62 μA–15 mA operation, accommodating both ultra-low-power and higher-drive designs |
Applications
| Portable Instrumentation | Data Acquisition Systems |
|---|---|
Use Scenario: Handheld multimeter with 16-bit SAR ADC requiring stable reference under varying battery voltage. IC Role / Device Role / Timing Role: Shunt voltage reference providing precise 3.0 V reference for ADC full-scale calibration. Use Value: Enables <1 LSB error across battery discharge curve due to tight initial tolerance and low tempco. | Use Scenario: Industrial PLC analog input module measuring 4–20 mA sensor signals. IC Role / Device Role / Timing Role: Precision reference for 24-bit delta-sigma ADC front-end, rejecting supply ripple. Use Value: 35 μVrms noise and ≤0.9 Ω dynamic impedance minimize quantization uncertainty in high-resolution measurements. |
| Energy Management Systems | Automotive Body Control Modules |
Use Scenario: Smart electricity meter with metrology-grade energy measurement IC. IC Role / Device Role / Timing Role: Reference source for anti-aliasing filter biasing and ADC reference in isolated power domains. Use Value: 120 ppm long-term stability reduces annual calibration drift, extending maintenance intervals. | Use Scenario: In-cabin temperature/humidity sensor node powered by 12 V vehicle bus. IC Role / Device Role / Timing Role: Stable 3.0 V reference for microcontroller ADC and analog sensor signal conditioning. Use Value: −40°C to +125°C operation ensures accuracy across engine-off cold soak and under-dash hot conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TL4050A30IDBZR | 3.0 V, ±0.1% A grade, SOT-23 package, 75 ppm/°C max tempco, 40 μVrms noise | Surface-mount only; higher noise and slightly looser tempco than LM4040AIZ-3.0/NOPB | Preferred for new SMT designs where board area is critical and TO-92 footprint is unavailable |
| REF3030AIDBZR | 3.0 V, ±0.2% initial accuracy, SOT-23, 50 ppm/°C max tempco, 28 μVrms noise, 50 μA min current | Series topology (not shunt); requires output capacitor; lower noise but higher quiescent current sensitivity | Used when low-noise series reference is acceptable and supply headroom permits series drop |
Compared with TL4050A30IDBZR and REF3030AIDBZR, LM4040AIZ-3.0/NOPB offers superior temperature stability (100 vs. 75/50 ppm/°C), TO-92 through-hole compatibility, and proven robustness in legacy industrial systems - making it optimal for cost-sensitive, repairable, or high-reliability through-hole deployments.
Availability
LM4040AIZ-3.0/NOPB is available at Aetrix Electronics and suitable for portable instrumentation, data acquisition systems, and energy management applications requiring stable component supply, long-lifecycle support, and consistent parametric performance across production batches.
Supply support for LM4040AIZ-3.0/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 high-volume manufacturing.
The LM4040-N product line delivers micropower shunt references optimized for space-constrained, battery-operated, and high-accuracy measurement systems - emphasizing factory-trimmed voltage accuracy, low drift, and capacitor-free operation.
FAQ
What is the exact output voltage and tolerance of LM4040AIZ-3.0/NOPB at 25°C?
The LM4040AIZ-3.0/NOPB has a nominal reverse breakdown voltage of 3.0 V with ±0.1% initial tolerance at 25°C (A grade), corresponding to ±3 mV absolute deviation. This specification is production-tested and guaranteed per TI's SNOS633K datasheet Section 6.11, ensuring suitability for 12-bit and higher precision systems without trimming.
Does LM4040AIZ-3.0/NOPB require an external output capacitor?
No, LM4040AIZ-3.0/NOPB does not require an external output capacitor. Its internal design ensures stability with any capacitive load, including direct connection to ADC reference inputs or filtering networks. This eliminates capacitor-related aging, leakage, and layout constraints - a key advantage over many series references.
What is the minimum operating current for LM4040AIZ-3.0/NOPB?
The LM4040AIZ-3.0/NOPB requires a minimum operating current of 62 μA at 25°C to maintain regulation, as specified in Section 6.3 of the datasheet. At full temperature range (−40°C to +125°C), this increases to 68 μA for extended grade variants - critical for sizing the series resistor in low-power battery applications.
Can LM4040AIZ-3.0/NOPB be used in automotive applications?
Yes, LM4040AIZ-3.0/NOPB supports automotive environments with its −40°C to +125°C extended temperature range and qualified TO-92 package. While not AEC-Q200 certified itself, it is functionally aligned with automotive body electronics and sensor modules where ambient temperature extremes occur - commonly deployed in non-safety-critical cabin and chassis subsystems.
How does the noise performance of LM4040AIZ-3.0/NOPB compare to other shunt references?
LM4040AIZ-3.0/NOPB delivers 35 μVrms wideband noise (10 Hz–10 kHz), matching industry-leading shunt references like the LM4040B series. This low noise level minimizes added uncertainty in high-resolution ADC conversions and is achieved through optimized Zener structure and on-die filtering - verified in TI's typical characteristics plots (Figure 12–14).
LM4040AIZ-3.0/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- TO-226-3, TO-92-3 (TO-226AA)
- Series:
- -
- Packaging:
- Box
- Product Status:
- Obsolete
- Reference Type:
- Shunt
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 3V
- Voltage - Output (Max):
- -
- Current - Output:
- 15 mA
- Tolerance:
- ±0.1%
- Temperature Coefficient:
- 100ppm/°C
- Noise - 0.1Hz to 10Hz:
- -
- Noise - 10Hz to 10kHz:
- 35µVrms
- Voltage - Input:
- -
- Current - Supply:
- -
- Current - Cathode:
- 67 µA
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-92-3
LM4040AIZ-3.0/NOPB FAQ
1.How can I place an order for LM4040AIZ-3.0/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4040AIZ-3.0/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 LM4040AIZ-3.0/NOPB reliable?
The price and inventory of LM4040AIZ-3.0/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4040AIZ-3.0/NOPB is usually 5 days.
3.What payment methods are accepted for LM4040AIZ-3.0/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4040AIZ-3.0/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4040AIZ-3.0/NOPB?
LM4040AIZ-3.0/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4040AIZ-3.0/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 LM4040AIZ-3.0/NOPB?
For technical support, including LM4040AIZ-3.0/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4040AIZ-3.0/NOPB requirements.
6.How does Aetrix verify that LM4040AIZ-3.0/NOPB is sourced from the original manufacturer or authorized distributors?
All LM4040AIZ-3.0/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 LM4040AIZ-3.0/NOPB meets industry standards.
7.What is the process for return or replacement of LM4040AIZ-3.0/NOPB?
All LM4040AIZ-3.0/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM4040AIZ-3.0/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 LM4040AIZ-3.0/NOPB part is unused and in its original packaging.
Return procedure for LM4040AIZ-3.0/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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