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Texas Instruments LM4040B10IDCKR
- Part No.:
- LM4040B10IDCKR
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
LM4040B10IDCKR.pdf
- Description:
- IC VREF SHUNT 0.2% SC70-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,934
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Product details
Overview
LM4040B10IDCKR from Texas Instruments is a precision micropower shunt voltage reference delivering a fixed 10V output with ±0.2% initial accuracy (B grade), 100ppm/°C temperature coefficient, 35μVRMS wideband noise, and stable operation from 45μA to 15mA cathode current. It serves as a low-drift, low-noise voltage基准 in high-resolution ADCs, industrial sensor signal chains, and portable energy infrastructure monitoring systems.
For engineers reviewing the LM4040B10IDCKR datasheet, LM4040B10IDCKR pinout, LM4040B10IDCKR application, or LM4040B10IDCKR equivalent, key selection criteria include guaranteed 10V output tolerance over –40°C to 85°C, SC-70 package compatibility with space-constrained PCB layouts, and no-output-capacitor-required stability across all capacitive loads.
Technical Context
The LM4040B10IDCKR operates as a two-terminal shunt reference, sinking cathode current (IZ) to maintain a precise 10V reverse breakdown voltage (VZ) across its terminals. Its Zener-zap trimmed silicon design achieves tight initial tolerance without external components.
It features low dynamic impedance (≤0.9Ω at 1mA), thermal hysteresis of 0.08%, and long-term stability of 120ppm after 1000 hours - enabling consistent performance in analog front-ends where drift directly impacts measurement fidelity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 10V nominal; maintains ±0.2% initial accuracy at 25°C for high-precision calibration points |
| Initial Accuracy | ±0.2% maximum (B grade); ensures minimal system-level offset error before temperature compensation |
| Temp Coefficient | 100ppm/°C max; limits voltage drift to ±0.65% over full –40°C to 85°C operating range |
| Noise (10Hz–10kHz) | 35μVRMS typical; avoids introducing measurable noise into 16-bit+ data acquisition paths |
| Min Cathode Current | 45μA typical; enables ultra-low-power operation in battery-powered field transmitters |
| Dynamic Impedance | ≤0.9Ω at 1mA; minimizes load-induced voltage variation during fast transient current demands |
| Operating Temp Range | –40°C to +85°C; qualified for industrial ambient conditions without derating |
Pinout & Package
LM4040B10IDCKR is packaged in a 5-pin SC-70 (DCK) outline measuring 2.00mm × 1.25mm. The device has three functional terminals and two NC pins.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (Pin 3) | Shunt current input | Primary current path; voltage regulation occurs between this pin and Anode |
| Anode (Pin 1) | Common reference node | Typically connected to system ground; defines 0V reference for VZ measurement |
| NC (Pins 4, 5) | No internal connection | Must remain unconnected; floating or tied to Anode only if EMI mitigation is required |
| Pin 2 (*) | Internal Zener reference node | Must float or connect to Anode; ties internal Zener structure to common potential for noise immunity |
Key Features
| Feature | Design Value |
|---|---|
| Zero-output-capacitor stability | Operates reliably with any capacitive load - eliminates BOM cost and layout area for external bypass caps |
| Wide cathode current range | 45μA to 15mA operation supports both ultra-low-power sensors and higher-current analog stages |
| Low thermal hysteresis | 0.08% hysteresis ensures repeatable voltage output after thermal cycling between –40°C and 125°C |
| High ESD robustness | ±2000V HBM rating protects against handling damage during assembly and field service |
| Long-term stability | 120ppm drift after 1000 hours enables decade-long calibration intervals in sealed instrumentation |
Applications
| Data-Acquisition Systems | Energy Infrastructure |
|---|---|
Use Scenario: High-resolution (≥16-bit) SAR or delta-sigma ADC reference in portable multimeters and power quality analyzers. IC Role / Device Role / Timing Role: Provides stable 10V reference voltage for ADC full-scale calibration and ratiometric sensor excitation. Use Value: 35μVRMS noise and 100ppm/°C TC ensure <0.005% total unadjusted error over temperature - meeting Class A metering standards. | Use Scenario: Voltage reference in solar inverter DC-link monitoring and battery management system (BMS) cell voltage sensing. IC Role / Device Role / Timing Role: Serves as precision scaling reference for isolated voltage dividers feeding isolation amplifiers. Use Value: 45μA minimum current enables direct use with high-impedance divider networks, reducing power loss and self-heating errors. |
| Analog Input Module | Field Transmitters |
Use Scenario: Modular PLC analog input card requiring multiple independent 10V references for 4–20mA loop-powered sensors. IC Role / Device Role / Timing Role: Shunt reference establishing local 10V rail for op-amp-based current-to-voltage conversion and gain-setting networks. Use Value: SC-70 package allows dense placement; zero-capacitor requirement simplifies layout and improves channel-to-channel crosstalk performance. | Use Scenario: Two-wire 4–20mA smart transmitter in hazardous industrial environments (e.g., pressure, temperature). IC Role / Device Role / Timing Role: Supplies stable excitation voltage for RTD or strain gauge bridges and reference for DAC-controlled loop current generation. Use Value: Guaranteed operation from –40°C to +85°C and 0.2% accuracy enable single-point calibration across full temperature range - eliminating field recalibration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM4040C10IDCKR | ±0.5% initial accuracy, same 100ppm/°C TC and SC-70 package | Acceptable where lower cost outweighs tighter tolerance requirements | Select when system-level calibration compensates for initial error and long-term drift dominates spec budget |
| REF3010AIDBZR | 10V series reference; 0.2% accuracy, 50ppm/°C TC, 25μVRMS noise, SOT-23-3 | Requires external bypass capacitor; higher quiescent current (45μA vs. 45μA typical sink) | Choose for lower noise and better TC where board space permits series topology and added capacitor |
Compared with LM4040C10IDCKR, the LM4040B10IDCKR reduces initial error by 0.3% - critical for uncalibrated systems - while matching thermal behavior; versus REF3010AIDBZR, it eliminates output capacitance but trades 15μVRMS noise reduction for shunt topology flexibility.
Availability
LM4040B10IDCKR is available at Aetrix Electronics and suitable for data-acquisition systems, energy infrastructure monitoring, and field transmitter designs requiring stable component supply with guaranteed long-term availability and traceable lot control.
Supply support for LM4040B10IDCKR 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, embedded processing, and connectivity technologies with over 50 years of precision reference design heritage.
The LM4040 family was engineered for cost-sensitive, space-constrained applications demanding micropower operation and uncompromised voltage stability - particularly in industrial sensing, portable instrumentation, and automotive subsystems.
FAQ
What is the guaranteed operating temperature range for LM4040B10IDCKR?
The LM4040B10IDCKR is characterized for operation from –40°C to +85°C (industrial temperature range). This range is explicitly specified in the device comparison table and electrical characteristics sections of the TI datasheet, and applies to all LM4040BxxI variants including LM4040B10IDCKR. Operation outside this range is not guaranteed.
Does LM4040B10IDCKR require an external output capacitor?
No, LM4040B10IDCKR is stable with all capacitive loads and requires no external output capacitor. This is confirmed in the Features section ("Stable with all capacitive loads; no output capacitor required") and the Description section of the official TI datasheet. The device's internal design ensures phase margin across load conditions.
What is the minimum cathode current needed for LM4040B10IDCKR to regulate properly?
The LM4040B10IDCKR requires a minimum cathode current of 45μA (typical) to maintain regulation. This value is specified in Section 6.5 of the TI datasheet under "IZ,min" for LM4040B10I devices. Full-range specification guarantees ≤80μA maximum across –40°C to 85°C.
How does the pin configuration of LM4040B10IDCKR differ from the SOT-23 version?
LM4040B10IDCKR uses the 5-pin SC-70 (DCK) package with Cathode on Pin 3, Anode on Pin 1, and Pins 4–5 as NC. In contrast, the SOT-23 (DBZ) variant places Cathode on Pin 1 and Anode on Pin 2 in a 3-pin layout. Pin 2 in DCK is a dedicated internal node (marked *), not present in DBZ - requiring distinct PCB footprint and routing.
Is LM4040B10IDCKR compatible with lead-free reflow processes?
Yes, LM4040B10IDCKR is rated for standard lead-free reflow profiles per JEDEC J-STD-020. The SC-70 package is qualified for peak temperatures up to 260°C, and TI's packaging documentation confirms RoHS compliance and MSL Level 1 rating - meaning unlimited floor life at ≤30°C/85% RH.
LM4040B10IDCKR 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:
- Fixed
- Voltage - Output (Min/Fixed):
- 10V
- Voltage - Output (Max):
- -
- Current - Output:
- 15 mA
- Tolerance:
- ±0.2%
- Temperature Coefficient:
- 100ppm/°C
- Noise - 0.1Hz to 10Hz:
- -
- Noise - 10Hz to 10kHz:
- 180µVrms
- Voltage - Input:
- -
- Current - Supply:
- -
- Current - Cathode:
- 125 µA
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-5
LM4040B10IDCKR FAQ
1.How can I place an order for LM4040B10IDCKR through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4040B10IDCKR 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 LM4040B10IDCKR reliable?
The price and inventory of LM4040B10IDCKR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4040B10IDCKR is usually 5 days.
3.What payment methods are accepted for LM4040B10IDCKR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4040B10IDCKR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4040B10IDCKR?
LM4040B10IDCKR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4040B10IDCKR 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 LM4040B10IDCKR?
For technical support, including LM4040B10IDCKR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4040B10IDCKR requirements.
6.How does Aetrix verify that LM4040B10IDCKR is sourced from the original manufacturer or authorized distributors?
All LM4040B10IDCKR 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 LM4040B10IDCKR meets industry standards.
7.What is the process for return or replacement of LM4040B10IDCKR?
All LM4040B10IDCKR units undergo pre-shipment inspection (PSI). If there is an issue with LM4040B10IDCKR, 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 LM4040B10IDCKR part is unused and in its original packaging.
Return procedure for LM4040B10IDCKR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM4040B10IDCKR Tags
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