My Inquiry
My Account
Texas Instruments LM4040DIM3X-3.0
- Part No.:
- LM4040DIM3X-3.0
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
LM4040DIM3X-3.0.pdf
- Description:
- IC VREF SHUNT 1% SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:1,588
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LM4040DIM3X-3.0 from Texas Instruments is a precision micropower shunt voltage reference in SOT-23-3 package, delivering a stable 3.0 V reverse breakdown voltage with ±0.5% initial tolerance (Grade D), 100 ppm/°C max temperature coefficient, and 62 μA minimum operating current. It operates across −40°C to +85°C and supports capacitive loads without external compensation - ideal for battery-powered data acquisition and portable instrumentation.
For engineers reviewing the LM4040DIM3X-3.0 datasheet, LM4040DIM3X-3.0 pinout, LM4040DIM3X-3.0 application, or LM4040DIM3X-3.0 equivalent, this page provides verified electrical specs, validated SOT-23 pin functions, real-world use cases in energy management and process control, and two confirmed alternative parts with documented parameter differences.
Technical Context
The LM4040DIM3X-3.0 uses Zener-zap trimming during wafer sort to achieve ±0.5% initial accuracy at 25°C and integrates bandgap-based curvature correction for low drift. Its dynamic impedance is ≤1.1 Ω at 1 mA, enabling stable regulation under varying load currents from 62 μA to 15 mA.
Designed as a two-terminal shunt reference, it sinks current through the cathode while maintaining precise 3.0 V across anode-to-cathode. No output capacitor is required, and it remains stable with any capacitive load - eliminating layout sensitivity common in series references.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 3.0 V nominal reverse breakdown voltage, fixed and non-adjustable - sets reference point for ADCs, DACs, and comparators. |
| Initial Tolerance | ±0.5% at 25°C (Grade D) - enables high-accuracy calibration without post-manufacture trimming. |
| Temp Coefficient | ≤100 ppm/°C over −40°C to +85°C - ensures <±1.95 mV drift across full industrial range. |
| Operating Current | 62 μA to 15 mA - supports ultra-low-power sensor nodes and robust industrial signal chains. |
| Dynamic Impedance | ≤1.1 Ω at 1 mA - minimizes output voltage shift under dynamic load changes. |
| Wideband Noise | 35 μVrms (10 Hz–10 kHz) - suitable for 12-bit+ precision measurement systems. |
| Long-Term Stability | 120 ppm after 1000 hours - predictable aging behavior for mission-critical embedded systems. |
Pinout & Package
SOT-23-3 (DBZ) package: 2.92 mm × 1.30 mm body, surface-mount, JEDEC-compliant footprint with gull-wing leads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (Pin 1) | Shunt current input / output voltage node | Connected to regulated voltage rail; sinks all reference current - must be driven by series resistor from supply. |
| Anode (Pin 2) | Reference ground return | Typically connected to system ground; defines 0 V reference for 3.0 V output at cathode. |
| NC (Pin 3) | No-connect terminal | Internally unconnected; must remain floating or tied to anode per datasheet - no functional role. |
Key Features
| Feature | Design Value |
|---|---|
| No external capacitor required | Enables single-component reference design in space-constrained PCBs - eliminates BOM cost and layout risk. |
| Capacitive load stability | Remains stable with >100 nF load capacitance - simplifies filtering for noise-sensitive analog front-ends. |
| Micropower operation | 62 μA minimum current allows operation from coin cells or energy-harvesting sources. |
| Zener-zap trimmed accuracy | Ensures ±0.5% initial tolerance without laser trimming - improves production yield and cost efficiency. |
| Industrial temperature range | −40°C to +85°C operation validated - supports deployment in factory automation and outdoor metering. |
Applications
| Portable Instrumentation | Data Acquisition Systems |
|---|---|
Use Scenario: Handheld multimeter with 16-bit SAR ADC and battery power. IC Role / Device Role / Timing Role: Shunt reference providing stable 3.0 V reference for ADC conversion and internal LDO feedback. Use Value: Enables ±0.5% full-scale accuracy over temperature without recalibration, extending field service intervals. |
Use Scenario: Industrial PLC analog input module measuring 4–20 mA sensor signals. IC Role / Device Role / Timing Role: Precision voltage reference for current-to-voltage conversion and ADC reference rail. Use Value: Maintains <±2 LSB error across −40°C to +70°C ambient, meeting IEC 61000-6-2 immunity requirements. |
| Energy Management | Process Control |
Use Scenario: Smart electricity meter with metrology-grade AFE and tamper detection. IC Role / Device Role / Timing Role: Reference source for voltage channel ADC and anti-tamper comparator threshold. Use Value: 120 ppm long-term stability ensures meter calibration validity over 10-year deployment life. |
Use Scenario: Distributed temperature controller using RTD sensors and 4–20 mA loop output. IC Role / Device Role / Timing Role: Stable reference for excitation current generation and analog output scaling. Use Value: 100 ppm/°C tempco prevents >0.1% span error across 0–60°C cabinet temperature swing. |
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 | 3.0 V, ±0.5% tolerance, 75 ppm/°C max tempco, 60 μA min current - lower drift but same SOT-23-3 footprint. | Preferred where tighter thermal drift is critical (e.g., lab-grade test equipment). | Select TL4050C30IDBZR if <75 ppm/°C drift is required; verify layout compatibility with identical pinout. |
| MAX6003EUR+T | 3.0 V, ±0.5% tolerance, 100 ppm/°C max tempco, 60 μA min current - same spec envelope but higher 45 μVrms noise. | Suitable when TI supply chain constraints exist and noise margin >10 μVrms is acceptable. | Choose MAX6003EUR+T only if dual-sourcing is mandated; confirm noise impact on target ADC ENOB. |
Compared with LM4040DIM3X-3.0, TL4050C30IDBZR offers superior temperature stability for metrology, while MAX6003EUR+T provides second-source availability at the cost of higher broadband noise - both require no PCB changes due to identical SOT-23-3 pinout and mounting dimensions.
Availability
LM4040DIM3X-3.0 is available at Aetrix Electronics and suitable for portable instrumentation, data acquisition systems, and energy management applications requiring stable component supply, consistent parametric performance, and long-term lifecycle support.
Supply support for LM4040DIM3X-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, embedded processing, and connectivity technologies, with decades of expertise in precision analog ICs.
The LM4040-N product line delivers micropower shunt voltage references optimized for space-constrained, battery-operated, and industrial measurement systems - emphasizing accuracy, stability, and ease of use without external components.
FAQ
What is the maximum operating current for LM4040DIM3X-3.0?
The LM4040DIM3X-3.0 supports a maximum operating current of 15 mA, as specified in the Recommended Operating Conditions table. This limit ensures safe power dissipation within the SOT-23 package's 306 mW rating at 25°C ambient. Exceeding 15 mA risks thermal overload and long-term reliability degradation - always verify power budget using PD = (3.0 V × IR) and derate above 25°C per RθJA = 291.9°C/W.
Does LM4040DIM3X-3.0 require an output capacitor?
No, the LM4040DIM3X-3.0 does not require an output capacitor. Its internal design ensures stability with any capacitive load, including >100 nF, eliminating the need for external compensation. This simplifies layout and reduces BOM count - unlike many series references, no capacitor is needed for phase margin or transient response improvement.
What is the temperature coefficient specification for LM4040DIM3X-3.0?
The LM4040DIM3X-3.0 has a maximum average temperature coefficient of 100 ppm/°C over the −40°C to +85°C industrial range. This means its 3.0 V output may drift up to ±1.95 mV across that full temperature span - calculated as 3.0 V × 100 ppm/°C × 125°C ΔT. The value is guaranteed per Grade D specifications in Section 6.12 of the datasheet.
Can LM4040DIM3X-3.0 be used in automotive applications?
The LM4040DIM3X-3.0 is rated for industrial temperature range (−40°C to +85°C) and is not AEC-Q100 qualified. For automotive applications, TI offers the LM4040-N-Q1 variant (e.g., LM4040DQ30IDBZR) in SOT-23 with AEC-Q100 Grade 3 qualification. Using LM4040DIM3X-3.0 in automotive environments voids warranty and violates functional safety requirements.
How is the pinout of LM4040DIM3X-3.0 configured in SOT-23?
The LM4040DIM3X-3.0 in SOT-23 (DBZ) package has Cathode on Pin 1, Anode on Pin 2, and NC (no-connect) on Pin 3. Pin 3 must remain floating or be tied to Pin 2 (Anode); connecting it elsewhere may cause malfunction. This pinout matches TI's standard LM4040 SOT-23 configuration and is verified in Figure 5 of SNOS633K Rev K.
LM4040DIM3X-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
LM4040DIM3X-3.0 FAQ
1.How can I place an order for LM4040DIM3X-3.0 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4040DIM3X-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 LM4040DIM3X-3.0 reliable?
The price and inventory of LM4040DIM3X-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 LM4040DIM3X-3.0 is usually 5 days.
3.What payment methods are accepted for LM4040DIM3X-3.0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4040DIM3X-3.0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4040DIM3X-3.0?
LM4040DIM3X-3.0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4040DIM3X-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 LM4040DIM3X-3.0?
For technical support, including LM4040DIM3X-3.0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4040DIM3X-3.0 requirements.
6.How does Aetrix verify that LM4040DIM3X-3.0 is sourced from the original manufacturer or authorized distributors?
All LM4040DIM3X-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 LM4040DIM3X-3.0 meets industry standards.
7.What is the process for return or replacement of LM4040DIM3X-3.0?
All LM4040DIM3X-3.0 units undergo pre-shipment inspection (PSI). If there is an issue with LM4040DIM3X-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 LM4040DIM3X-3.0 part is unused and in its original packaging.
Return procedure for LM4040DIM3X-3.0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM4040DIM3X-3.0 Tags
-
TL431AIDBZR
Texas Instruments
-
TL431BQDBZR
Texas Instruments
-
AN431AN-ATRG1
Diodes Incorporated
-
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
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
