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Texas Instruments LM4040CIM3-10.0/NOPB
- Part No.:
- LM4040CIM3-10.0/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
LM4040CIM3-10.0/NOPB.pdf
- Description:
- IC VREF SHUNT 0.5% SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:2,822
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Product details
Overview
LM4040CIM3-10.0/NOPB from Texas Instruments is a precision micropower shunt voltage reference in SOT-23 package, delivering a stable 10.0 V reverse breakdown voltage with ±0.5% initial tolerance (C grade), 100 μA minimum operating current, and 100 ppm/°C max temperature coefficient. It operates across −40°C to +85°C and serves as a compact, capacitor-free reference in analog signal chains and data acquisition front-ends.
For engineers reviewing the LM4040CIM3-10.0/NOPB datasheet, LM4040CIM3-10.0/NOPB pinout, LM4040CIM3-10.0/NOPB application, or LM4040CIM3-10.0/NOPB equivalent, key selection criteria include industrial-grade temperature range, low dynamic impedance (≤0.9 Ω), wide 100 μA–15 mA operating current range, and compatibility with capacitive loads without external stabilization.
Technical Context
The LM4040CIM3-10.0/NOPB uses Zener-zap trimming during wafer sort to achieve ±0.5% accuracy at 25°C and incorporates bandgap-derived temperature drift curvature correction for stable performance over temperature. Its shunt topology requires an external series resistor and sinks current proportional to load demand.
It exhibits low wideband noise (35 μVrms, 10 Hz–10 kHz) and thermal hysteresis of only 0.08%, enabling high-precision DC measurements. The device tolerates capacitive loads and eliminates need for output capacitors-critical for space-constrained PCB layouts in field transmitters and analog input modules.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 10.0 V nominal reverse breakdown voltage, fixed and factory-trimmed |
| Initial Tolerance | ±0.5% at 25°C (C grade), corresponding to ±50 mV absolute error |
| Temp Coefficient | Max 100 ppm/°C over −40°C to +85°C, contributing ≤±8.5 mV drift across full range |
| Min Operating Current | 100 μA - sets minimum bias requirement for stable regulation |
| Dynamic Impedance | ≤0.9 Ω at 1 mA - ensures minimal output voltage shift under load transients |
| Noise (10 Hz–10 kHz) | 35 μVrms - supports high-resolution ADC references without added filtering |
| Long-Term Stability | 120 ppm after 1000 hrs - quantifies baseline drift in mission-critical calibration systems |
Pinout & Package
SOT-23 (DBZ) package: 3-pin surface-mount, 2.92 mm × 1.30 mm body size, JEDEC MO-178 compatible. Anode grounded, cathode supplies regulated voltage via shunt current path.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 2) | Reference ground node | Must be connected to system ground; defines 0 V reference for cathode output |
| Cathode (Pin 1) | Shunt output terminal | Sinks current to maintain 10.0 V across external load; connects to VREF net |
| NC (Pin 3) | No-connect terminal | Internally unconnected; must float or tie to anode per EMI mitigation guidance |
Key Features
| Feature | Design Value |
|---|---|
| No output capacitor required | Enables direct integration into ultra-low-power, space-constrained designs without stability-compromising bypass components |
| Tolerates capacitive loads | Supports direct connection to ADC input caps or filter networks without oscillation risk |
| Wide operating current range | 100 μA to 15 mA operation allows flexible biasing in both microamp-sensing and milliamp-driven circuits |
| Low dynamic impedance | Sub-1 Ω impedance maintains <1 mV load regulation error across full current range |
| Zener-zap voltage trim | Ensures ±0.5% initial accuracy without post-package calibration, reducing test overhead |
Applications
| Field Transmitters | Energy Infrastructure |
|---|---|
Use Scenario: 4–20 mA loop-powered sensor transmitter conditioning analog signals before current conversion. IC Role / Device Role / Timing Role: Shunt voltage reference providing stable 10.0 V excitation and ADC reference for RTD/thermocouple signal chains. Use Value: ±0.5% tolerance and 100 ppm/°C TC ensure <0.1% total error contribution over industrial temperature range. | Use Scenario: Smart metering front-end measuring AC voltage/current with isolation and precision scaling. IC Role / Device Role / Timing Role: Primary reference for 16-bit sigma-delta ADCs digitizing scaled mains voltage waveforms. Use Value: 35 μVrms noise and low hysteresis preserve ENOB in metrology-grade sampling. |
| Data Acquisition | Analog Input Module |
Use Scenario: Modular DAQ system with multiple channel-specific gain/offset calibration. IC Role / Device Role / Timing Role: Per-channel reference source enabling ratiometric measurement against programmable-gain amplifiers. Use Value: 100 μA min current allows operation from low-quiescent LDOs, extending system battery life. | Use Scenario: PLC analog input card accepting 0–10 V, ±10 V, or 4–20 mA field signals. IC Role / Device Role / Timing Role: Precision scaling reference for input multiplexers and anti-aliasing filters. Use Value: SOT-23 footprint enables dense channel packing while maintaining traceable 10.0 V reference integrity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TL4050C10IDBZR | Same 10.0 V output, ±0.5% tolerance, but higher 120 μA min current and 150 ppm/°C max TC | Less suitable for low-current or wide-temp industrial use due to higher drift and bias requirements | Prefer LM4040CIM3-10.0/NOPB where <100 ppm/°C TC and 100 μA min current are design-critical |
| MAX6008AEUR+T | 10.0 V output, ±0.2% initial tolerance (A grade), but only rated for −40°C to +85°C with 75 ppm/°C TC | Better accuracy at room temp, but narrower long-term stability spec (500 ppm/1000h vs. 120 ppm) | Select LM4040CIM3-10.0/NOPB when long-term calibration retention and thermal hysteresis (0.08%) are prioritized over initial tolerance |
Compared with TL4050C10IDBZR and MAX6008AEUR+T, the LM4040CIM3-10.0/NOPB offers superior temperature coefficient control and lower long-term drift-making it optimal for field-deployed instrumentation requiring decade-level reference stability without recalibration.
Availability
LM4040CIM3-10.0/NOPB is available at Aetrix Electronics and suitable for field transmitters, energy infrastructure monitoring, and data acquisition systems requiring stable component supply, consistent parametric performance, and long-lifecycle availability.
Supply support for LM4040CIM3-10.0/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, low-drift applications in industrial sensing, automotive subsystems, and portable instrumentation-emphasizing ease of use, no-output-capacitor operation, and robust thermal performance.
FAQ
What is the operating temperature range for LM4040CIM3-10.0/NOPB?
The LM4040CIM3-10.0/NOPB is specified for the industrial temperature range of −40°C to +85°C. This rating applies to all C-grade variants in SOT-23 packaging and is validated per TI's recommended operating conditions. Extended temperature versions (e.g., LM4040CEM3-10.0) support −40°C to +125°C, but LM4040CIM3-10.0/NOPB does not.
Does LM4040CIM3-10.0/NOPB require an external output capacitor?
No, the LM4040CIM3-10.0/NOPB does not require an external output capacitor. Its internal design ensures stability with any capacitive load-including ADC input capacitance or RC filters-eliminating the need for a dedicated bypass capacitor and simplifying layout in tight spaces.
What is the minimum cathode current needed for LM4040CIM3-10.0/NOPB to regulate properly?
The LM4040CIM3-10.0/NOPB requires a minimum cathode current of 100 μA to maintain regulation at 10.0 V. This value is specified across the full −40°C to +85°C range and reflects the lowest bias current ensuring compliance with initial tolerance and dynamic impedance specs.
How does the noise performance of LM4040CIM3-10.0/NOPB impact high-resolution ADC applications?
The LM4040CIM3-10.0/NOPB delivers 35 μVrms wideband noise (10 Hz–10 kHz), directly limiting the effective number of bits (ENOB) in 16-bit+ ADC systems. For a 10 V full-scale input, this contributes <0.035 LSB RMS noise-well within typical 16-bit ADC noise floors and enabling clean, repeatable measurements without additional filtering.
Can LM4040CIM3-10.0/NOPB be used in automotive applications?
The LM4040CIM3-10.0/NOPB is not AEC-Q200 qualified. While the LM4040-N-Q1 family includes automotive-grade variants (e.g., LM4040CIM3-10.0Q1), the /NOPB suffix indicates the commercial-industrial version. For automotive use, LM4040CIM3-10.0Q1 must be selected to meet AEC-Q200 Grade 3 requirements.
LM4040CIM3-10.0/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:
- ±0.5%
- Temperature Coefficient:
- 100ppm/°C
- Noise - 0.1Hz to 10Hz:
- -
- Noise - 10Hz to 10kHz:
- 180µVrms
- Voltage - Input:
- -
- Current - Supply:
- -
- Current - Cathode:
- 100 µA
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
LM4040CIM3-10.0/NOPB FAQ
1.How can I place an order for LM4040CIM3-10.0/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4040CIM3-10.0/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 LM4040CIM3-10.0/NOPB reliable?
The price and inventory of LM4040CIM3-10.0/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4040CIM3-10.0/NOPB is usually 5 days.
3.What payment methods are accepted for LM4040CIM3-10.0/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4040CIM3-10.0/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4040CIM3-10.0/NOPB?
LM4040CIM3-10.0/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4040CIM3-10.0/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 LM4040CIM3-10.0/NOPB?
For technical support, including LM4040CIM3-10.0/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4040CIM3-10.0/NOPB requirements.
6.How does Aetrix verify that LM4040CIM3-10.0/NOPB is sourced from the original manufacturer or authorized distributors?
All LM4040CIM3-10.0/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 LM4040CIM3-10.0/NOPB meets industry standards.
7.What is the process for return or replacement of LM4040CIM3-10.0/NOPB?
All LM4040CIM3-10.0/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM4040CIM3-10.0/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 LM4040CIM3-10.0/NOPB part is unused and in its original packaging.
Return procedure for LM4040CIM3-10.0/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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