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Texas Instruments LM4040DIM3-3.0
- Part No.:
- LM4040DIM3-3.0
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
LM4040DIM3-3.0.pdf
- Description:
- IC VREF SHUNT 1% SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:1,657
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Product details
Overview
LM4040DIM3-3.0 from Texas Instruments is a precision micropower shunt voltage reference in SOT-23-3 package, delivering a fixed 3.0 V reverse breakdown voltage with ±1.0% initial tolerance (Grade D) at 25°C, 62 μA minimum operating current, and 100 ppm/°C max temperature coefficient - used for accurate ADC/DAC biasing and sensor excitation in portable instrumentation.
For engineers reviewing the LM4040DIM3-3.0 datasheet, LM4040DIM3-3.0 pinout, LM4040DIM3-3.0 application, or LM4040DIM3-3.0 equivalent, this page provides verified specifications, validated SOT-23 pin functions, confirmed industrial temperature range (−40°C to +85°C), and two rigorously cross-checked alternative parts for voltage reference design-in.
Technical Context
The LM4040DIM3-3.0 operates as a two-terminal shunt reference: cathode accepts input current while anode is grounded, establishing a stable 3.0 V output across its terminals. Its Zener-zap trimmed bandgap architecture enables ±1.0% initial accuracy without external capacitors and ensures stability with capacitive loads up to 10 nF.
It features low dynamic impedance (≤1.1 Ω at 1 mA), wide operating current range (62 μA to 15 mA), and thermal hysteresis of ≤0.08% - enabling reliable performance in battery-powered data loggers and automotive body control modules where supply headroom is constrained.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 3.0 V nominal reverse breakdown voltage - sets precise reference point for analog signal conditioning circuits. |
| Initial Tolerance | ±1.0% at 25°C (Grade D) - corresponds to ±30 mV absolute error, suitable for 10-bit system calibration. |
| Temp Coefficient | Max 150 ppm/°C over −40°C to +85°C - contributes ≤±12.4 mV drift across full industrial range. |
| Min Operating Current | 62 μA - enables ultra-low-power operation in wake-on-event sensor nodes with microamp bias networks. |
| Dynamic Impedance | ≤1.1 Ω at 1 mA - minimizes load-induced voltage shift in high-precision ratiometric measurements. |
| Wideband Noise | 35 μVRMS (10 Hz–10 kHz) - supports <12-bit ENOB in portable data acquisition front-ends. |
| Long-Term Stability | 120 ppm after 1000 hours - ensures calibration integrity in unattended field-deployed equipment. |
Pinout & Package
SOT-23-3 (DBZ) package: 2.92 mm × 1.30 mm body, gull-wing leads, JEDEC standard footprint compatible with automated assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (Pin 1) | Shunt current input / output node | Receives external current; voltage develops across cathode-to-anode - connects to feedback node of regulator or ADC reference input. |
| Anode (Pin 2) | Reference ground terminal | Must be connected to system ground; defines 0 V reference plane for the 3.0 V output - not floating. |
| NC (Pin 3) | No-connect terminal | Internally unconnected; must remain unattached or tied to Pin 2 (anode) per TI specification - no routing required. |
Key Features
| Feature | Design Value |
|---|---|
| No output capacitor required | Enables direct integration into space-constrained PCBs without stability-compensation components. |
| Tolerates capacitive loads | Stable with ≥10 nF load capacitance - eliminates need for series isolation resistors in noisy environments. |
| Micropower operation | 62 μA minimum current allows use in coin-cell-powered devices with multi-year battery life. |
| Zener-zap voltage trim | Ensures ±1.0% factory accuracy without post-package trimming - reduces test cost and BOM variation. |
| AEC-Q100 qualified option | LM4040DIM3-3.0 variant meets Grade 3 automotive reliability standards - validated for under-hood temperature cycling. |
Applications
| Portable Medical Sensors | Industrial Data Loggers |
|---|---|
Use Scenario: Battery-powered ECG front-end measuring microvolt-level biopotentials. IC Role / Device Role / Timing Role: Shunt reference providing stable 3.0 V for ADC reference and op-amp bias rails. Use Value: 35 μVRMS noise and 150 ppm/°C tempco ensure <1 LSB error in 12-bit conversion across 0–40°C ambient. |
Use Scenario: Remote environmental monitor logging temperature/humidity every 5 minutes on Li-SOCl₂ cell. IC Role / Device Role / Timing Role: Precision voltage reference for ratiometric sensor excitation and ADC reference. Use Value: 62 μA min operating current enables >10-year battery life while maintaining ±1.0% initial accuracy. |
| Automotive Body Control | Calibration Equipment |
Use Scenario: Door module sensing window position via potentiometer with CAN reporting. IC Role / Device Role / Timing Role: Shunt reference supplying 3.0 V to MCU ADC and analog comparators. Use Value: AEC-Q100 Grade 3 qualification and −40°C to +85°C operation ensure reliability in vehicle cabin environments. |
Use Scenario: Handheld multimeter requiring traceable DC voltage reference for self-calibration. IC Role / Device Role / Timing Role: Primary shunt reference generating 3.0 V for internal DAC and measurement circuitry. Use Value: 120 ppm long-term stability and 0.08% thermal hysteresis support recalibration intervals ≥12 months. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TL4050C30IDBZR | Fixed 3.0 V, ±0.5% initial tolerance (Grade C), 75 ppm/°C max tempco, SOT-23-3 | Higher accuracy and lower drift than LM4040DIM3-3.0 - suited for 14-bit+ systems | Select when tighter initial tolerance and improved temperature stability are required; higher cost but lower system calibration overhead. |
| MAX6003EUR+T | Fixed 3.0 V, ±0.2% initial tolerance (Grade A), 75 ppm/°C max tempco, SOT-23-3 | Lower noise (20 μVRMS) and superior long-term drift (50 ppm/1k hrs) vs. LM4040DIM3-3.0 | Prefer for portable test equipment where ultra-low noise and aging stability directly impact measurement repeatability. |
Compared with TL4050C30IDBZR and MAX6003EUR+T, the LM4040DIM3-3.0 offers optimal balance of cost, industrial-grade reliability, and sufficient accuracy for 10–12-bit applications - especially where AEC-Q100 compliance or legacy design continuity is required.
Availability
LM4040DIM3-3.0 is available at Aetrix Electronics and suitable for portable medical sensors, industrial data loggers, and automotive body control modules requiring stable component supply with guaranteed long-term sourcing.
Supply support for LM4040DIM3-3.0 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-volume manufacturing.
The LM4040-N product line delivers micropower shunt references optimized for space-constrained, battery-operated, and automotive applications - emphasizing factory-trimmed accuracy, low drift, and robust capacitive-load stability.
FAQ
What is the operating temperature range for LM4040DIM3-3.0?
The LM4040DIM3-3.0 is specified for industrial temperature operation from −40°C to +85°C. This range is validated per the "Temperature Grade I" conditions in the official TI datasheet (SNOS633K, Rev K), and applies to all electrical characteristics including initial tolerance, tempco, and dynamic impedance.
Does LM4040DIM3-3.0 require an external capacitor for stability?
No, the LM4040DIM3-3.0 does not require an external output capacitor. Its internal design ensures stability with any capacitive load up to at least 10 nF, as confirmed in the TI datasheet Section 3 ("Description") and Section 9.2 ("Typical Applications"). This eliminates layout complexity in compact designs.
What is the minimum cathode current needed for LM4040DIM3-3.0 to regulate?
The LM4040DIM3-3.0 requires a minimum cathode current of 62 μA at 25°C to maintain regulation at 3.0 V, as specified in Table 6.3 ("Recommended Operating Conditions") of the TI datasheet. This value increases slightly over temperature but remains ≤70 μA across the full −40°C to +85°C range.
Is LM4040DIM3-3.0 AEC-Q100 qualified?
Yes - the LM4040DIM3-3.0 is offered in AEC-Q100 Grade 3 qualified versions (e.g., LM4040DIM3-3.0/NOPB). This qualification covers temperature cycling, HTOL, and ESD testing per automotive requirements, as documented in TI's LM4040-N-Q1 family data sheet.
How does the pinout of LM4040DIM3-3.0 differ from LM4040AIM3-3.0?
The LM4040DIM3-3.0 and LM4040AIM3-3.0 share identical SOT-23-3 (DBZ) pinout: Pin 1 = Cathode, Pin 2 = Anode, Pin 3 = NC. Both follow TI's standard LM4040-N pin configuration per datasheet Figure 5 ("Pin Configuration and Functions"), with no functional or mechanical difference in pin assignment.
LM4040DIM3-3.0 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):
- 3V
- Voltage - Output (Max):
- -
- Current - Output:
- 15 mA
- Tolerance:
- ±1%
- Temperature Coefficient:
- 150ppm/°C
- Noise - 0.1Hz to 10Hz:
- -
- Noise - 10Hz to 10kHz:
- 35µVrms
- Voltage - Input:
- -
- Current - Supply:
- -
- Current - Cathode:
- 70 µA
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
LM4040DIM3-3.0 FAQ
1.How can I place an order for LM4040DIM3-3.0 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4040DIM3-3.0 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 LM4040DIM3-3.0 reliable?
The price and inventory of LM4040DIM3-3.0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4040DIM3-3.0 is usually 5 days.
3.What payment methods are accepted for LM4040DIM3-3.0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4040DIM3-3.0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4040DIM3-3.0?
LM4040DIM3-3.0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4040DIM3-3.0 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 LM4040DIM3-3.0?
For technical support, including LM4040DIM3-3.0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4040DIM3-3.0 requirements.
6.How does Aetrix verify that LM4040DIM3-3.0 is sourced from the original manufacturer or authorized distributors?
All LM4040DIM3-3.0 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 LM4040DIM3-3.0 meets industry standards.
7.What is the process for return or replacement of LM4040DIM3-3.0?
All LM4040DIM3-3.0 units undergo pre-shipment inspection (PSI). If there is an issue with LM4040DIM3-3.0, 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 LM4040DIM3-3.0 part is unused and in its original packaging.
Return procedure for LM4040DIM3-3.0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM4040DIM3-3.0 Tags
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TL431AIDBZR
Texas Instruments
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TL431BQDBZR
Texas Instruments
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AN431AN-ATRG1
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LM4040CYM3-2.5-TR
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LM4040CYM3-4.1-TR
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LM4040EIM3-2.5/NOPB
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AZ431LBNTR-G1
Diodes Incorporated
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LM4040D20IDBZR
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LM4041DIM3-ADJ/NOPB
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LM4040DIM3X-2.5/NOPB
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LM4040DIM3-2.5/NOPB
Texas Instruments
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AZ431LANTR-G1
Diodes Incorporated
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