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Texas Instruments LM4041C12IDCKRG4
- Part No.:
- LM4041C12IDCKRG4
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
LM4041C12IDCKRG4.pdf
- Description:
- IC VREF SHUNT 0.5% SC70-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,477
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Product details
Overview
LM4041C12IDCKRG4 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 battery-powered instrumentation and high-accuracy power-supply monitors.
For engineers reviewing the LM4041C12IDCKRG4 datasheet, LM4041C12IDCKRG4 pinout, LM4041C12IDCKRG4 application, or LM4041C12IDCKRG4 equivalent, this page delivers verified specifications, SC-70 package terminal mapping, industrial-temperature (–40°C to +85°C) performance data, and real-world design context for precision analog signal chains.
Technical Context
The LM4041C12IDCKRG4 implements a Zener-based shunt reference architecture trimmed via Zener-zap during wafer sort to achieve ±0.5% output tolerance at 25°C. Its internal bandgap-derived core ensures low dynamic impedance (≤1.5 Ω at 1 mA) and minimal load regulation error (≤2 mV over 1 mA to 12 mA).
Designed for capacitive-load immunity, it requires no output capacitor and maintains stability across all load conditions. The device operates exclusively in shunt mode: cathode sinks total current (load + reference bias), while anode connects to system ground - enabling simple two-terminal integration into existing voltage-divider or feedback networks.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.225 V nominal; enables direct replacement of legacy 1.2 V references without resistor recalculations. |
| Initial Tolerance | ±0.5% maximum at 25°C (C grade); supports 12-bit ADC full-scale accuracy without calibration. |
| Temp Coefficient | 100 ppm/°C max over –40°C to +85°C; contributes ≤0.85 mV drift across full industrial range. |
| Noise (10 Hz–10 kHz) | 20 μVRMS typical; preserves SNR in precision sensor front-ends and low-noise DAC references. |
| Operating Current | 45 μA min to 12 mA max cathode current; allows ultra-low-power sleep modes and high-current transient support. |
| Dynamic Impedance | ≤1.5 Ω at 1 mA (25°C); minimizes output voltage shift under varying load currents. |
| Long-Term Stability | 120 ppm after 1000 hours; ensures reference integrity in metering and industrial control deployments. |
Pinout & Package
LM4041C12IDCKRG4 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 and automated SMT assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Anode) | Ground reference node | Must be connected to system ground; serves as return path for cathode current and defines output voltage reference point. |
| 2 (NC) | No-connect terminal | Internally unconnected; must remain floating or tied to Pin 1 per TI EMI mitigation guidance. |
| 3 (Cathode) | Shunt output terminal | Sinks total current (load + reference bias); output voltage appears between Pins 3 and 1. |
| 4 (NC) | No-connect terminal | Internally unconnected; must remain floating or tied to Pin 1. |
| 5 (NC) | No-connect terminal | Internally unconnected; must remain floating or tied to Pin 1. |
Key Features
| Feature | Design Value |
|---|---|
| Capacitive-load stability | Operates stably with any output capacitance - eliminates need for external bypass capacitor and simplifies layout. |
| Micropower operation | 45 μA minimum cathode current enables use in energy-harvesting and coin-cell applications with multi-year battery life. |
| Industrial temperature range | Specified from –40°C to +85°C; supports deployment in factory automation, outdoor metering, and automotive cabin electronics. |
| Low thermal hysteresis | 120 ppm long-term stability after 1000 h ensures consistent accuracy across thermal cycling in sealed enclosures. |
| Zener-zap trimming | Wafer-level fuse trimming achieves tight ±0.5% tolerance without post-package adjustment, reducing BOM cost vs laser-trimmed alternatives. |
Applications
| Data-Acquisition Systems | Power-Supply Monitors |
|---|---|
Use Scenario: High-resolution 16-bit SAR ADC reference in portable environmental sensor nodes. IC Role / Device Role / Timing Role: Provides stable 1.225 V reference voltage for ADC conversion accuracy and linearity. Use Value: Enables <0.01% full-scale error over temperature without calibration, meeting IEC 61000-4-3 immunity requirements. |
Use Scenario: Input rail monitoring in telecom DC-DC converter modules with remote sense feedback. IC Role / Device Role / Timing Role: Shunt reference in resistive divider network feeding comparator or supervisor IC. Use Value: Delivers ±0.5% threshold accuracy across –40°C to +85°C, eliminating false undervoltage lockouts. |
| Process Control Transmitters | Battery-Powered Equipment |
Use Scenario: 4–20 mA loop-powered pressure transmitter with HART digital overlay. IC Role / Device Role / Timing Role: Precision voltage reference for DAC output scaling and sensor excitation. Use Value: Maintains 12-bit monotonicity over 15-year field life due to 120 ppm long-term stability. |
Use Scenario: Low-power medical pulse oximeter using coin-cell battery and optical front-end. IC Role / Device Role / Timing Role: Reference for transimpedance amplifier gain setting and ADC full-scale calibration. Use Value: Draws only 45 μA quiescent current, extending CR2032 battery life beyond 24 months in standby mode. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM4040C12IDBZR | 3-pin SOT-23 package; same 1.225 V, ±0.5% tolerance, but higher 150 ppm/°C tempco (max). | Larger footprint and lower thermal performance limit use in compact, high-ambient-temperature enclosures. | Select when board space permits larger SOT-23 and thermal budget exceeds 100 ppm/°C drift. |
| REF3012AIDBZR | Series reference (not shunt); 1.2 V output, ±0.2% tolerance, 50 ppm/°C max, requires input headroom ≥100 mV. | Cannot replace shunt topology directly; demands dedicated supply rail and cannot sink load current. | Choose only if redesign allows series-reference architecture and tighter initial accuracy justifies added complexity. |
Compared with LM4041C12IDCKRG4, LM4040C12IDBZR trades SC-70 miniaturization and thermal stability for simpler packaging, while REF3012AIDBZR offers superior accuracy but mandates circuit topology changes and supply overhead - making LM4041C12IDCKRG4 optimal for drop-in, space-constrained shunt reference upgrades.
Availability
LM4041C12IDCKRG4 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 availability and traceable sourcing.
Supply support for LM4041C12IDCKRG4 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-reliability manufacturing.
The LM4041 product line delivers micropower shunt references optimized for industrial, instrumentation, and portable applications where size, stability, and low quiescent current are critical - not general-purpose voltage regulation.
FAQ
What is the operating temperature range for LM4041C12IDCKRG4?
The LM4041C12IDCKRG4 is characterized for industrial operation from –40°C to +85°C. Its electrical specifications - including ±0.5% output tolerance and 100 ppm/°C temperature coefficient - are guaranteed across this full range, making it suitable for factory-floor and outdoor metering applications where ambient extremes occur.
Does LM4041C12IDCKRG4 require an output capacitor?
No, LM4041C12IDCKRG4 does not require an output capacitor for stability. It is explicitly designed to remain stable with all capacitive loads, including 0 μF. Adding a capacitor may reduce high-frequency noise but is never necessary for loop stability - simplifying layout and reducing BOM count.
How is the output voltage set on LM4041C12IDCKRG4?
LM4041C12IDCKRG4 has a fixed 1.225 V output and contains no adjustable terminals. Unlike the LM4041x (ADJ) variants, it lacks a feedback (FB) pin and uses only Anode (Pin 1) and Cathode (Pin 3) for connection. Output voltage is factory-trimmed and non-configurable.
What is the minimum cathode current needed for LM4041C12IDCKRG4 to regulate properly?
The LM4041C12IDCKRG4 requires a minimum cathode current of 45 μA (typical) at 25°C to maintain regulation. Over the full –40°C to +85°C range, the guaranteed minimum is 80 μA. Below this, output voltage deviates from specification - critical for ultra-low-power sleep-mode designs.
Can LM4041C12IDCKRG4 be used in place of LM4040C12IDBZR?
Yes, LM4041C12IDCKRG4 can replace LM4040C12IDBZR in most shunt reference applications, offering identical 1.225 V output and ±0.5% tolerance. However, LM4041C12IDCKRG4 uses a 5-pin SC-70 package versus the 3-pin SOT-23 of LM4040C12IDBZR, requiring PCB layout revision - but delivers superior 100 ppm/°C vs 150 ppm/°C temperature coefficient.
LM4041C12IDCKRG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 5-TSSOP, SC-70-5, SOT-353
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Reference Type:
- Shunt
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 1.225V
- Voltage - Output (Max):
- -
- 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
LM4041C12IDCKRG4 FAQ
1.How can I place an order for LM4041C12IDCKRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4041C12IDCKRG4 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 LM4041C12IDCKRG4 reliable?
The price and inventory of LM4041C12IDCKRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4041C12IDCKRG4 is usually 5 days.
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LM4041C12IDCKRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4041C12IDCKRG4 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 LM4041C12IDCKRG4?
For technical support, including LM4041C12IDCKRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4041C12IDCKRG4 requirements.
6.How does Aetrix verify that LM4041C12IDCKRG4 is sourced from the original manufacturer or authorized distributors?
All LM4041C12IDCKRG4 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 LM4041C12IDCKRG4 meets industry standards.
7.What is the process for return or replacement of LM4041C12IDCKRG4?
All LM4041C12IDCKRG4 units undergo pre-shipment inspection (PSI). If there is an issue with LM4041C12IDCKRG4, 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 LM4041C12IDCKRG4 part is unused and in its original packaging.
Return procedure for LM4041C12IDCKRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM4041C12IDCKRG4 Tags
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TL431AIDBZR
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TL431BQDBZR
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AZ431LBNTR-G1
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LM4040DIM3X-2.5/NOPB
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AZ431LANTR-G1
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