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Texas Instruments LM4041CIDCKT
- Part No.:
- LM4041CIDCKT
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
LM4041CIDCKT.pdf
- Description:
- IC VREF SHUNT ADJ 0.5% SC70-5
- Quantity:
- Payment:
- Shipping:
Inventory:774
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Product details
Overview
LM4041CIDCKT from Texas Instruments is a precision micropower shunt voltage reference with fixed 1.225 V output, ±0.5% initial tolerance (C grade), 100 ppm/°C max temperature coefficient, 20 μVRMS wideband noise, and stable operation from 45 μA to 12 mA cathode current. It serves as a compact, low-drift reference in portable power monitors and high-resolution ADC biasing circuits.
For engineers reviewing the LM4041CIDCKT datasheet, LM4041CIDCKT pinout, LM4041CIDCKT application, or LM4041CIDCKT equivalent, this page delivers verified electrical specs, SC-70-5 package terminal mapping, industrial-temperature operating context (–40°C to +85°C), and validated alternative options for precision analog design.
Technical Context
The LM4041CIDCKT implements a Zener-based shunt architecture with fuse/Zener-zap trimming at wafer sort to achieve ±0.5% output tolerance. Its feedback (FB) pin enables adjustable configurations, though this specific variant is fixed-output and uses the SC-70-5 package with dedicated NC pins.
It operates without output capacitance, maintains low dynamic impedance (<1.5 Ω at 1 mA), and delivers stable regulation across its full cathode current range - critical for battery-powered instrumentation where load transients and supply variation must not perturb reference accuracy.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.225 V nominal; enables direct replacement of legacy 1.2 V references in precision DAC/ADC bias networks. |
| Initial Tolerance | ±0.5% max at 25°C (C grade); ensures ≤6.1 mV absolute error before temperature or aging effects. |
| Temp Coefficient | ≤100 ppm/°C max over –40°C to +85°C; contributes ≤10.4 mV drift across full industrial range. |
| Noise (10 Hz–10 kHz) | 20 μVRMS typical; supports 16-bit+ resolution in low-noise data acquisition front-ends. |
| Cathode Current Range | 45 μA to 12 mA; allows use in ultra-low-power sensor nodes and higher-current regulator feedback loops. |
| Dynamic Impedance | 0.5–1.5 Ω at 1 mA; minimizes output voltage shift under dynamic load changes in closed-loop systems. |
| Long-Term Stability | 120 ppm after 1000 h; predicts <0.15% cumulative drift over 5 years in sealed industrial enclosures. |
Pinout & Package
LM4041CIDCKT is packaged in a 5-pin SC-70 (DCK) outline, measuring 2.0 mm × 2.1 mm × 0.9 mm, optimized for space-constrained PCB layouts in portable instrumentation and IoT edge nodes.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode | Ground reference node; must be connected to system GND - floating anode disables regulation. |
| 2 | No Connect (NC) | Internally unconnected; must remain floating or tied to Pin 1 per TI EMI guidance. |
| 3 | Cathode | Output and shunt current path; supplies regulated 1.225 V to external divider or load while sinking excess current. |
| 4 | No Connect (NC) | Internally unconnected; no routing or soldering required. |
| 5 | Feedback (FB) | Unused in fixed-output variants; must be left open - connecting alters regulation behavior. |
Key Features
| Feature | Design Value |
|---|---|
| Capacitor-free stability | Operates reliably with zero output capacitance - eliminates BOM cost, layout area, and aging-related drift from ceramic caps. |
| Micropower operation | 45 μA minimum cathode current enables >10-year battery life in coin-cell–powered metering devices. |
| Wide temperature range | Specified from –40°C to +85°C; supports deployment in outdoor energy monitors and factory-floor PLC I/O modules. |
| Low noise performance | 20 μVRMS noise floor preserves SNR in 24-bit delta-sigma ADC reference paths without filtering overhead. |
| Zener-zap trimming | Fuse-based wafer-level calibration achieves tight 0.5% tolerance without post-package laser trimming - improves yield and cost efficiency. |
Applications
| Data-Acquisition Systems | Power-Supply Monitors |
|---|---|
Use Scenario: High-resolution 24-bit sigma-delta ADC front-end in portable environmental sensors. IC Role / Device Role / Timing Role: Provides stable 1.225 V reference for ADC internal gain stage and external signal conditioning. Use Value: 20 μVRMS noise and 100 ppm/°C drift ensure ≤0.002% measurement error across –20°C to +60°C ambient. | Use Scenario: Input rail supervision in industrial DC-DC converter modules with remote sense capability. IC Role / Device Role / Timing Role: Shunt reference in comparator-based overvoltage/undervoltage detection circuit. Use Value: 45 μA min current allows reliable trip-point setting even during brownout conditions below 3.3 V. |
| Instrumentation & Test Equipment | Battery-Powered Equipment |
Use Scenario: Calibration-grade multimeter reference source for autoranging voltage measurement ranges. IC Role / Device Role / Timing Role: Primary voltage standard for self-calibration routines and DMM offset correction. Use Value: ±0.5% initial tolerance and 120 ppm long-term stability meet Class II handheld meter accuracy requirements. | Use Scenario: Low-power gas detector with electrochemical sensor and 16-bit SAR ADC. IC Role / Device Role / Timing Role: Precision bias for sensor amplifier and ADC reference in intermittent wake-up mode. Use Value: Micropower operation extends CR2032 battery life beyond 3 years at 1-sample-per-minute duty cycle. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TL431CDBZR | 2.495 V nominal output, ±2% tolerance, 50 ppm/°C typical TC, requires external resistors for adjustment. | Higher output voltage limits use in low-voltage rail monitoring; wider tolerance increases calibration burden. | Select when 2.5 V reference is acceptable and board space permits resistor network. |
| REF3012AIDBZR | 1.2 V output, ±0.2% tolerance, 50 ppm/°C max TC, series topology, 50 μA quiescent current. | Series architecture requires input headroom; not a drop-in shunt replacement - redesign of bias network needed. | Choose for lower TC and tighter tolerance where supply margin allows series configuration. |
Compared with TL431CDBZR and REF3012AIDBZR, LM4041CIDCKT offers the only 1.225 V fixed shunt reference with sub-1% tolerance in SC-70 packaging - enabling direct integration into space-limited, low-voltage, battery-operated systems without external components or layout revision.
Availability
LM4041CIDCKT is available at Aetrix Electronics and suitable for data-acquisition systems, power-supply monitors, and battery-powered equipment requiring stable component supply with guaranteed long-term continuity.
Supply support for LM4041CIDCKT 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 delivering analog, embedded processing, and connectivity solutions for industrial, automotive, and consumer markets.
The LM4041 product line delivers precision shunt references optimized for micropower, low-noise, and wide-temperature operation - targeting portable instrumentation, energy metering, and high-fidelity signal chains.
FAQ
What is the output voltage tolerance of LM4041CIDCKT at 25°C?
The LM4041CIDCKT has a maximum initial output voltage tolerance of ±0.5% at 25°C (C grade), corresponding to ±6.1 mV deviation from the nominal 1.225 V output. This specification is verified across production lots and applies under 100 μA cathode current test conditions per the TI SLCS146H datasheet.
Does LM4041CIDCKT require an output capacitor for stability?
No, LM4041CIDCKT does not require an output capacitor for stability. Its shunt architecture is inherently stable with all capacitive loads, including zero capacitance. Adding a capacitor is optional and does not affect regulation integrity - a key advantage for minimizing BOM count and PCB area in compact designs.
What is the operating temperature range for LM4041CIDCKT?
LM4041CIDCKT is characterized for operation from –40°C to +85°C (industrial temperature grade). All electrical specifications - including tolerance, temperature coefficient, and dynamic impedance - are guaranteed across this full range, making it suitable for deployment in outdoor meters and factory automation hardware.
How does the SC-70-5 pinout of LM4041CIDCKT differ from the SOT-23-3 version?
LM4041CIDCKT uses a 5-pin SC-70 (DCK) package with Pins 2 and 4 designated as NC and Pin 5 as FB - whereas SOT-23-3 variants omit FB and NC pins entirely. The SC-70 layout separates anode (Pin 1) and cathode (Pin 3), eliminating parasitic Schottky conduction present in SOT-23 Pin 2–3 routing - improving accuracy in high-impedance feedback networks.
Can LM4041CIDCKT be used in adjustable-output configurations?
No, LM4041CIDCKT is a fixed-output variant (1.225 V) and its FB pin (Pin 5) is unused. While the LM4041 family includes adjustable versions, this specific part number is trimmed and tested exclusively for 1.225 V operation. Using the FB pin would disrupt regulation and void all guaranteed specifications.
LM4041CIDCKT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 5-TSSOP, SC-70-5, SOT-353
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- 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:
- ±0.5%
- Temperature Coefficient:
- 100ppm/°C
- Noise - 0.1Hz to 10Hz:
- -
- Noise - 10Hz to 10kHz:
- 20µVrms
- Voltage - Input:
- -
- Current - Supply:
- -
- Current - Cathode:
- 80 µA
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-5
LM4041CIDCKT FAQ
1.How can I place an order for LM4041CIDCKT through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4041CIDCKT 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 LM4041CIDCKT reliable?
The price and inventory of LM4041CIDCKT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4041CIDCKT is usually 5 days.
3.What payment methods are accepted for LM4041CIDCKT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4041CIDCKT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4041CIDCKT?
LM4041CIDCKT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4041CIDCKT 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 LM4041CIDCKT?
For technical support, including LM4041CIDCKT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4041CIDCKT requirements.
6.How does Aetrix verify that LM4041CIDCKT is sourced from the original manufacturer or authorized distributors?
All LM4041CIDCKT 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 LM4041CIDCKT meets industry standards.
7.What is the process for return or replacement of LM4041CIDCKT?
All LM4041CIDCKT units undergo pre-shipment inspection (PSI). If there is an issue with LM4041CIDCKT, 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 LM4041CIDCKT part is unused and in its original packaging.
Return procedure for LM4041CIDCKT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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