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Texas Instruments LM4040DIM3-4.1
- Part No.:
- LM4040DIM3-4.1
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
LM4040DIM3-4.1.pdf
- Description:
- IC VREF SHUNT 1% SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:522
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Product details
Overview
LM4040DIM3-4.1 from Texas Instruments is a precision micropower shunt voltage reference in SOT-23-3 package, delivering a stable 4.096 V reverse breakdown voltage with ±1% initial tolerance (D-grade) at 25°C, 68 μA minimum operating current, and 100 ppm/°C max temperature coefficient across −40°C to +85°C industrial range - used for ADC/DAC biasing and sensor excitation in portable instrumentation.
For engineers reviewing the LM4040DIM3-4.1 datasheet, LM4040DIM3-4.1 pinout, LM4040DIM3-4.1 application, or LM4040DIM3-4.1 equivalent, key selection criteria include shunt reference accuracy over temperature, low dynamic impedance (<1.1 Ω), wide 68 μA–15 mA operating current range, no-output-capacitor operation, and SOT-23 footprint compatibility with space-constrained PCB layouts.
Technical Context
The LM4040DIM3-4.1 employs a bandgap-based Zener-zap trimmed shunt architecture with curvature-corrected temperature drift compensation, enabling stable 4.096 V output without external capacitors while tolerating capacitive loads. Its fuse-trimmed wafer-sort process ensures ±1% initial accuracy (D-grade) and supports operation from 68 μA up to 15 mA.
It features low 35 μVRMS wideband noise (10 Hz–10 kHz), 0.3–1.1 Ω reverse dynamic impedance (depending on current), and thermal hysteresis of ≤0.08% - making it suitable for high-resolution data acquisition where long-term stability and low-noise biasing are critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 4.096 V nominal reverse breakdown voltage - sets precise reference level for analog signal chains |
| Initial Tolerance | ±1% at 25°C (D-grade) - enables single-point calibration in mid-accuracy systems |
| Temp Coefficient | ≤150 ppm/°C (max, industrial range) - limits voltage drift to ±9.8 mV over −40°C to +85°C |
| Operating Current | 68 μA to 15 mA - supports ultra-low-power sensor nodes and high-current DAC references |
| Dynamic Impedance | ≤1.1 Ω at 1 mA - maintains regulation under fast load transients |
| Output Noise | 35 μVRMS (10 Hz–10 kHz) - avoids noise-induced errors in 16-bit+ ADC applications |
| Temperature Range | −40°C to +85°C (industrial grade) - qualified for embedded industrial and test equipment |
Pinout & Package
SOT-23-3 (DBZ) package: 2.92 mm × 1.30 mm body, surface-mount, JEDEC-standard footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 2) | Reference ground node | Must be connected to system ground; defines cathode voltage relative to GND |
| Cathode (Pin 1) | Shunt current input / output voltage node | Supplies regulated 4.096 V to load; sinks all excess current from series resistor |
| NC (Pin 3) | No-connect terminal | Internally unconnected; must float or tie to anode (Pin 2) per TI specification |
Key Features
| Feature | Design Value |
|---|---|
| No output capacitor required | Enables direct connection to load without stability-compromising bypass caps - reduces BOM count and board area |
| Tolerates capacitive loads | Stable with any value of output capacitance - simplifies filtering for noise-sensitive analog circuits |
| Micropower operation | 68 μA minimum current allows use in battery-powered devices with multi-year runtime |
| Low dynamic impedance | ≤1.1 Ω ensures minimal voltage shift during load steps - critical for precision feedback loops |
| Zener-zap trimmed accuracy | Fuse-based wafer-level trimming achieves ±1% initial tolerance without post-package calibration |
Applications
| Portable Instrumentation | Data Acquisition Systems |
|---|---|
Use Scenario: Handheld multimeter with 16-bit SAR ADC and lithium coin-cell power supply. IC Role / Device Role / Timing Role: Shunt reference providing stable 4.096 V reference to ADC and analog front-end op-amps. Use Value: Enables full-scale 4.096 V measurement range with <±0.5 LSB integral nonlinearity error over temperature. | Use Scenario: Industrial PLC analog input module measuring 4–20 mA sensor signals. IC Role / Device Role / Timing Role: Precision bias source for current-to-voltage conversion and ADC reference. Use Value: Maintains ≤0.1% gain error across −40°C to +70°C ambient, eliminating recalibration cycles. |
| Energy Management Sensors | Automotive Test Equipment |
Use Scenario: Smart electricity meter using isolated current sensors and sigma-delta ADCs. IC Role / Device Role / Timing Role: Low-drift reference for metrology-grade voltage scaling and calibration. Use Value: Delivers <120 ppm long-term stability after 1000 hrs, meeting IEC 62053 accuracy requirements. | Use Scenario: In-vehicle battery analyzer verifying 12 V system health under engine cranking. IC Role / Device Role / Timing Role: Stable reference for high-side current sensing and microcontroller ADC. Use Value: Operates reliably across −40°C to +85°C with <±10 mV total error, supporting ASIL-B diagnostic coverage. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TL4050C41IDBZR | Same 4.096 V output, ±0.5% initial tolerance (C-grade), higher 100 μA min current, SOT-23-3 | Better accuracy but higher quiescent current - suited for accuracy-critical, non-battery apps | Select when ±0.5% initial tolerance is mandatory and 100 μA min current is acceptable |
| MAX6008AEUR+T | 4.096 V output, ±0.2% initial tolerance, 50 μA min current, SC70-3, 35 μVRMS noise | Lower min current and smaller SC70 package - ideal for ultra-compact, low-power designs | Select when board space and sub-60 μA operation are prioritized over SOT-23 footprint reuse |
Compared with TL4050C41IDBZR and MAX6008AEUR+T, the LM4040DIM3-4.1 offers optimal balance of D-grade ±1% accuracy, 68 μA minimum current, and industry-standard SOT-23-3 compatibility - making it the preferred choice for cost-sensitive industrial instrumentation where moderate accuracy and proven reliability are required.
Availability
LM4040DIM3-4.1 is available at Aetrix Electronics and suitable for portable instrumentation, data acquisition systems, and energy management sensors requiring stable component supply with consistent parametric performance across production lots.
Supply support for LM4040DIM3-4.1 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 company specializing in analog and embedded processing technologies, with leadership in precision analog ICs and broad industrial portfolio coverage.
The LM4040-N product line delivers micropower shunt voltage references optimized for space-constrained, battery-operated, and high-accuracy measurement systems - designed specifically for ADC/DAC biasing, sensor excitation, and calibration-critical analog signal chains.
FAQ
What is the exact output voltage and tolerance of the LM4040DIM3-4.1?
The LM4040DIM3-4.1 provides a nominal reverse breakdown voltage of 4.096 V with ±1% initial tolerance at 25°C (D-grade specification). Over the industrial temperature range (−40°C to +85°C), its total tolerance expands to ±1.98% due to temperature coefficient effects, equating to ±81 mV maximum deviation from nominal.
Does the LM4040DIM3-4.1 require an external output capacitor for stability?
No, the LM4040DIM3-4.1 does not require an external output capacitor. Its internal design ensures stability across the full 68 μA–15 mA operating current range and with any capacitive load - eliminating the need for external bypass components and reducing PCB area and BOM cost.
What is the minimum operating current for the LM4040DIM3-4.1, and why does it matter?
The LM4040DIM3-4.1 requires a minimum operating current of 68 μA at 25°C to maintain regulation. This value increases slightly over temperature and is critical for low-power designs: if the series current-limiting resistor supplies less than 68 μA under worst-case conditions, the reference voltage collapses and system accuracy fails.
How does the LM4040DIM3-4.1 compare to the LM4040AIM3-4.1 in terms of accuracy and use case?
The LM4040AIM3-4.1 offers ±0.1% initial tolerance (A-grade) versus ±1% for the LM4040DIM3-4.1, making it suitable for high-precision calibration. The LM4040DIM3-4.1 trades accuracy for cost and is ideal for applications where ±1% is sufficient - such as general-purpose industrial sensors and mid-tier data loggers.
Can the LM4040DIM3-4.1 be used in automotive applications?
The LM4040DIM3-4.1 is rated for industrial temperature range (−40°C to +85°C) and is not AEC-Q200 qualified. For automotive applications, TI offers the LM4040-N-Q1 variant (e.g., LM4040DQIM3-4.1), which meets AEC-Q100 Grade 3 requirements and is validated for under-hood environments.
LM4040DIM3-4.1 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:
- Obsolete
- Reference Type:
- Shunt
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 4.096V
- Voltage - Output (Max):
- -
- Current - Output:
- 15 mA
- Tolerance:
- ±1%
- Temperature Coefficient:
- 150ppm/°C
- Noise - 0.1Hz to 10Hz:
- -
- Noise - 10Hz to 10kHz:
- 80µVrms
- Voltage - Input:
- -
- Current - Supply:
- -
- Current - Cathode:
- 78 µA
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
LM4040DIM3-4.1 FAQ
1.How can I place an order for LM4040DIM3-4.1 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4040DIM3-4.1 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 LM4040DIM3-4.1 reliable?
The price and inventory of LM4040DIM3-4.1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4040DIM3-4.1 is usually 5 days.
3.What payment methods are accepted for LM4040DIM3-4.1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4040DIM3-4.1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4040DIM3-4.1?
LM4040DIM3-4.1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4040DIM3-4.1 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 LM4040DIM3-4.1?
For technical support, including LM4040DIM3-4.1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4040DIM3-4.1 requirements.
6.How does Aetrix verify that LM4040DIM3-4.1 is sourced from the original manufacturer or authorized distributors?
All LM4040DIM3-4.1 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 LM4040DIM3-4.1 meets industry standards.
7.What is the process for return or replacement of LM4040DIM3-4.1?
All LM4040DIM3-4.1 units undergo pre-shipment inspection (PSI). If there is an issue with LM4040DIM3-4.1, 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 LM4040DIM3-4.1 part is unused and in its original packaging.
Return procedure for LM4040DIM3-4.1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM4040DIM3-4.1 Tags
-
TL431AIDBZR
Texas Instruments
-
TL431BQDBZR
Texas Instruments
-
AN431AN-ATRG1
Diodes Incorporated
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LM4040CYM3-2.5-TR
Microchip Technology
-
LM4040CYM3-4.1-TR
Microchip Technology
-
LM4040EIM3-2.5/NOPB
Texas Instruments
-
AZ431LBNTR-G1
Diodes Incorporated
-
LM4040D20IDBZR
Texas Instruments
-
LM4041DIM3-ADJ/NOPB
Texas Instruments
-
LM4040DIM3X-2.5/NOPB
Texas Instruments
-
LM4040DIM3-2.5/NOPB
Texas Instruments
-
AZ431LANTR-G1
Diodes Incorporated
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