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Texas Instruments LM4040AIZ-10.0/NOPB
- Part No.:
- LM4040AIZ-10.0/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- TO-226-3, TO-92-3 (TO-226AA)
- Datasheet:
-
LM4040AIZ-10.0/NOPB.pdf
- Description:
- IC VREF SHUNT 0.1% TO92-3
- Quantity:
- Payment:
- Shipping:
Inventory:366
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Product details
Overview
LM4040AIZ-10.0/NOPB from Texas Instruments is a precision micropower shunt voltage reference in TO-92 package, delivering a fixed 10.0 V reverse breakdown voltage with ±0.1% initial tolerance (A grade) at 25°C, 100 μA minimum operating current, and 100 ppm/°C max temperature coefficient - used for high-accuracy ADC/DAC biasing and sensor excitation in industrial field transmitters.
For engineers reviewing the LM4040AIZ-10.0/NOPB datasheet, LM4040AIZ-10.0/NOPB pinout, LM4040AIZ-10.0/NOPB application, or LM4040AIZ-10.0/NOPB equivalent, key selection criteria include its 10 V output stability across −40°C to +85°C, low 35 μVrms noise (10 Hz–10 kHz), no-output-capacitor operation, and compatibility with capacitive loads in space-constrained analog signal chains.
Technical Context
The LM4040AIZ-10.0/NOPB operates as a two-terminal shunt reference, sinking current through its cathode to maintain a stable 10.0 V across external load/resistor networks. Its Zener-zap trimmed bandgap architecture enables ±0.1% initial accuracy and curvature-corrected temperature drift compensation.
It functions without an output capacitor and remains stable under capacitive loading up to 15 mA, with dynamic impedance of 0.3–0.8 Ω at 1 mA. The device supports industrial-grade operation (−40°C to +85°C) and achieves thermal hysteresis of ≤0.08% after cycling between −40°C and +125°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 10.0 V nominal reverse breakdown voltage, fixed and non-adjustable - sets precise bias point for analog front-ends. |
| Initial Tolerance | ±0.1% at 25°C (A grade) - enables single-point calibration in high-resolution data acquisition systems. |
| Temp Coefficient | ≤100 ppm/°C (max) over −40°C to +85°C - ensures <±0.85% total drift across full industrial range. |
| Min Operating Current | 100 μA - allows ultra-low-power operation in battery-backed sensor nodes and energy-harvesting circuits. |
| Output Noise | 35 μVrms (10 Hz–10 kHz) - minimizes added uncertainty in 16-bit+ ADC reference paths. |
| Dynamic Impedance | 0.3–0.8 Ω at 1 mA - maintains tight regulation despite load current transients in precision instrumentation. |
| Thermal Hysteresis | ≤0.08% - guarantees repeatable voltage after thermal cycling, critical for field-deployed measurement equipment. |
Pinout & Package
LM4040AIZ-10.0/NOPB uses a 3-pin TO-92 package (body size 4.30 mm × 4.30 mm) with axial leads. Pin 1 is Anode (ground reference), Pin 2 is Cathode (shunt current/output node), and Pin 3 is NC (no connect, must float or tie to anode per EMI guidance).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | Reference ground node | Connected to system ground; establishes return path for shunt current and defines 0 V reference for 10.0 V output. |
| Cathode (Pin 2) | Shunt current input / output voltage node | Receives current from series resistor; voltage at this pin is regulated to 10.0 V relative to anode - connects directly to ADC REF+ or op-amp feedback network. |
| NC (Pin 3) | No-connect terminal | Must remain unconnected or tied to anode; improves EMI immunity in noisy environments like motor drives or power converters. |
Key Features
| Feature | Design Value |
|---|---|
| No output capacitor required | Enables direct integration into compact PCB layouts without stability-compromising bypass components. |
| Tolerates capacitive loads | Stable with >100 nF load capacitance - simplifies filtering in noisy industrial I/O modules without phase-margin analysis. |
| Zener-zap voltage trim | Ensures ±0.1% initial accuracy via wafer-level laser trimming - eliminates need for board-level calibration. |
| Bandgap temperature drift correction | Reduces curvature-induced error to ≤100 ppm/°C - delivers predictable performance across automotive under-hood temperatures. |
| Low quiescent current | 100 μA minimum operating current - extends battery life in portable field instruments and wireless sensor transmitters. |
Applications
| Field Transmitter Calibration | Energy Infrastructure Monitoring |
|---|---|
Use Scenario: Precision 4–20 mA loop-powered transmitter conditioning analog sensor signals (e.g., pressure, temperature) before current conversion. IC Role / Device Role / Timing Role: Shunt reference providing stable 10.0 V excitation for bridge sensors and accurate reference for 16-bit DACs generating loop current. Use Value: ±0.1% initial tolerance and ≤0.08% thermal hysteresis ensure long-term calibration integrity in unattended remote installations. |
Use Scenario: High-voltage DC monitoring in solar inverters and battery management systems requiring isolated voltage sensing. IC Role / Device Role / Timing Role: Reference source for isolated sigma-delta ADCs measuring bus voltages up to 1000 V via resistive dividers. Use Value: 35 μVrms low-noise output preserves SNR in 24-bit energy metering ICs under EMI-rich grid environments. |
| Analog Input Module | Automotive Sensor Interface |
Use Scenario: Modular PLC analog input card digitizing multiple 0–10 V industrial signals with simultaneous sampling. IC Role / Device Role / Timing Role: Common 10.0 V reference shared across multiple SAR ADCs to eliminate inter-channel gain mismatch. Use Value: Low dynamic impedance (0.3–0.8 Ω) prevents crosstalk-induced reference droop during multi-channel conversions. |
Use Scenario: Engine control unit (ECU) interface for wideband oxygen sensors and knock detection circuits. IC Role / Device Role / Timing Role: Stable 10.0 V reference for analog front-end amplifiers and window comparators in AEC-Q100 qualified subsystems. Use Value: Industrial-grade −40°C to +85°C operation and 100 ppm/°C tempco meet ASAM MCD-2 MC requirements for on-board diagnostics. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM4040CIZ-10.0/NOPB | ±0.5% initial tolerance (C grade), same 10 V output and TO-92 package | Lower accuracy acceptable in cost-sensitive industrial controls where calibration is performed at system level | Select when ±0.5% tolerance meets end-equipment spec and BOM cost reduction is prioritized over factory calibration savings |
| REF3010AIDBZR | 10 V series reference, SOT-23 package, 50 ppm/°C max tempco, requires output capacitor | Higher accuracy and lower drift, but needs external 1 μF capacitor and cannot sink current like a shunt device | Choose for ultra-stable 10 V supply in low-noise audio or medical instrumentation where layout space permits series topology |
Compared with LM4040CIZ-10.0/NOPB, the LM4040AIZ-10.0/NOPB delivers four times tighter initial tolerance (±0.1% vs ±0.5%), reducing system-level calibration effort; versus REF3010AIDBZR, it offers shunt topology flexibility and capacitor-free operation but trades off absolute temperature stability and higher dynamic impedance.
Availability
LM4040AIZ-10.0/NOPB is available at Aetrix Electronics and suitable for field transmitters, energy infrastructure monitoring, and analog input modules requiring stable component supply with guaranteed long-term continuity and traceable sourcing.
Supply support for LM4040AIZ-10.0/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 automotive-qualified components.
The LM4040-N product line delivers micropower shunt references optimized for space-constrained, high-accuracy analog signal chains in industrial automation, energy systems, and automotive electronics - emphasizing factory-trimmed stability and robustness across extended temperature ranges.
FAQ
What is the operating temperature range for LM4040AIZ-10.0/NOPB?
The LM4040AIZ-10.0/NOPB is rated for industrial temperature operation from −40°C to +85°C. It is not qualified for extended −40°C to +125°C operation - that grade requires the LM4040AEM3-10.0/NOPB (SOT-23) or LM4040AQIM3-10.0/NOPB (AEC-Q100 Grade 1). The LM4040AIZ-10.0/NOPB maintains ±0.1% initial tolerance and ≤100 ppm/°C tempco within its specified industrial range.
Does LM4040AIZ-10.0/NOPB require an output capacitor?
No, the LM4040AIZ-10.0/NOPB does not require an output capacitor for stability. Its internal design eliminates the need for external stabilization components while remaining stable with any capacitive load - a key advantage over many series references. This simplifies PCB layout and reduces BOM count in compact field transmitter designs.
What is the minimum cathode current needed for LM4040AIZ-10.0/NOPB to regulate at 10.0 V?
The LM4040AIZ-10.0/NOPB requires a minimum cathode current of 100 μA to maintain regulation at 10.0 V. Below this threshold, output voltage deviates from specification. This value is higher than lower-voltage variants (e.g., 60 μA for 2.5 V version) due to increased Zener impedance at 10 V - design must ensure series resistor limits maximum current to 15 mA while sustaining ≥100 μA across all operating conditions.
Can LM4040AIZ-10.0/NOPB be used in automotive applications?
The LM4040AIZ-10.0/NOPB itself is not AEC-Q100 qualified. For automotive use, TI offers the LM4040AQIM3-10.0/NOPB (SOT-23, Grade 1: −40°C to +125°C) or LM4040AQIY-10.0/NOPB (SC70). These variants undergo additional stress testing and lot traceability per AEC-Q100 Rev H. The LM4040AIZ-10.0/NOPB is intended for industrial-grade systems only.
How does thermal hysteresis affect LM4040AIZ-10.0/NOPB in field-deployed equipment?
Thermal hysteresis in the LM4040AIZ-10.0/NOPB is specified at ≤0.08% - meaning voltage measured at 25°C after cycling from −40°C differs by no more than 8 mV from voltage measured at 25°C after cycling from +125°C. This ensures repeatability in outdoor or thermally cycled environments like solar farms or railway signaling cabinets, where calibration drift between seasonal temperature extremes must be minimized.
LM4040AIZ-10.0/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):
- 10V
- Voltage - Output (Max):
- -
- Current - Output:
- 15 mA
- Tolerance:
- ±0.1%
- Temperature Coefficient:
- 100ppm/°C
- Noise - 0.1Hz to 10Hz:
- -
- Noise - 10Hz to 10kHz:
- 180µVrms
- Voltage - Input:
- -
- Current - Supply:
- -
- Current - Cathode:
- 103 µA
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-92-3
LM4040AIZ-10.0/NOPB FAQ
1.How can I place an order for LM4040AIZ-10.0/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4040AIZ-10.0/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-10.0/NOPB reliable?
The price and inventory of LM4040AIZ-10.0/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-10.0/NOPB is usually 5 days.
3.What payment methods are accepted for LM4040AIZ-10.0/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4040AIZ-10.0/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4040AIZ-10.0/NOPB?
LM4040AIZ-10.0/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4040AIZ-10.0/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-10.0/NOPB?
For technical support, including LM4040AIZ-10.0/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4040AIZ-10.0/NOPB requirements.
6.How does Aetrix verify that LM4040AIZ-10.0/NOPB is sourced from the original manufacturer or authorized distributors?
All LM4040AIZ-10.0/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-10.0/NOPB meets industry standards.
7.What is the process for return or replacement of LM4040AIZ-10.0/NOPB?
All LM4040AIZ-10.0/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM4040AIZ-10.0/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-10.0/NOPB part is unused and in its original packaging.
Return procedure for LM4040AIZ-10.0/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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