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Texas Instruments LM4040DIM3X-3.0/NOPB
- Part No.:
- LM4040DIM3X-3.0/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
LM4040DIM3X-3.0/NOPB.pdf
- Description:
- IC VREF SHUNT 1% SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:8,714
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Product details
Overview
LM4040DIM3X-3.0/NOPB 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 ±0.5% initial tolerance (Grade C), 100 ppm/°C max temperature coefficient, and 35 μVrms wideband noise (10 Hz–10 kHz). It operates from 62 μA to 15 mA over −40°C to +85°C and requires no output capacitor-ideal for space-constrained analog input modules and field transmitters.
For engineers reviewing the LM4040DIM3X-3.0/NOPB datasheet, LM4040DIM3X-3.0/NOPB pinout, LM4040DIM3X-3.0/NOPB application, or LM4040DIM3X-3.0/NOPB equivalent, key selection criteria include its Grade C accuracy at 3.0 V, SOT-23 thermal performance (RθJA = 291.9°C/W), capacitive-load stability, and automotive-grade availability via LM4040QDIM3X-3.0/NOPB.
Technical Context
The LM4040DIM3X-3.0/NOPB uses Zener-zap trimming during wafer sort to achieve ±0.5% initial accuracy at 25°C and incorporates bandgap-derived curvature correction for stable voltage over temperature. Its low dynamic impedance (0.3–0.9 Ω) ensures minimal load regulation error across 62 μA–15 mA operating current.
Unlike series references, this shunt device sinks current to maintain regulated cathode voltage relative to anode (ground), enabling simple two-terminal biasing in high-impedance sensing paths. It tolerates unlimited capacitive loads without oscillation due to inherent phase margin design.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 3.0 V nominal reverse breakdown voltage - sets precise reference point for ADCs, DACs, and comparators. |
| Initial Tolerance | ±0.5% at 25°C (Grade C) - enables single-point calibration in industrial data acquisition systems. |
| Temp Coefficient | ≤100 ppm/°C - limits drift to ±2.6 mV over −40°C to +85°C ambient range. |
| Operating Current | 62 μA to 15 mA - supports ultra-low-power sensor nodes and high-current buffer stages. |
| Noise (10 Hz–10 kHz) | 35 μVrms - preserves signal integrity in 16-bit+ data converters without external filtering. |
| Dynamic Impedance | 0.3–0.9 Ω - minimizes voltage shift under varying load currents (e.g., during SAR ADC sampling bursts). |
| Thermal Hysteresis | 0.08% - ensures repeatable voltage after thermal cycling between −40°C and +125°C. |
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 |
|---|---|---|
| Anode (Pin 2) | Reference ground node | Connected to system ground; defines voltage reference plane for cathode output. |
| Cathode (Pin 1) | Shunt output terminal | Sinks current to maintain 3.0 V between cathode and anode; connects to divider network or load. |
| NC (Pin 3) | No-connect terminal | Must float or tie to anode per TI recommendation for EMI immunity; not internally connected. |
Key Features
| Feature | Design Value |
|---|---|
| No external capacitor required | Enables direct integration into compact PCB layouts without stability-compensation components. |
| Capacitive-load tolerant | Stable operation with any value of output capacitance - simplifies filtering for noisy power rails. |
| Zener-zap voltage trim | Ensures ±0.5% initial accuracy without post-package trimming, reducing manufacturing cost and test time. |
| Low quiescent current | 62 μA minimum operating current allows use in battery-powered field instruments with multi-year runtime. |
| AEC-Q100 qualified option | LM4040QDIM3X-3.0/NOPB variant available for automotive applications requiring Grade 1 (−40°C to +125°C). |
Applications
| Field Transmitters | Energy Infrastructure |
|---|---|
Use Scenario: 4–20 mA loop-powered sensor transmitter in oil/gas wellhead monitoring. IC Role / Device Role / Timing Role: Shunt reference for DAC output scaling and current-loop compliance voltage setting. Use Value: 3.0 V output matches common 3.3 V rail headroom while ±0.5% tolerance ensures <0.1% full-scale error in 12-bit current DACs. |
Use Scenario: Smart meter voltage measurement front-end with isolation amplifiers. IC Role / Device Role / Timing Role: Precision reference for isolated sigma-delta ADCs measuring grid-phase voltages. Use Value: 35 μVrms noise and 100 ppm/°C TC enable Class 0.5 metering accuracy across −25°C to +70°C operating range. |
| Analog Input Module | Automotive ECUs |
Use Scenario: Industrial PLC analog input card with multiple 16-bit ADC channels. IC Role / Device Role / Timing Role: Shared reference source for multiplexed SAR ADCs and signal conditioning op-amps. Use Value: Low dynamic impedance (≤0.9 Ω) prevents crosstalk-induced gain error when switching between channels at 100 kSPS. |
Use Scenario: Battery management system (BMS) cell-voltage monitor in EV traction battery packs. IC Role / Device Role / Timing Role: Reference for precision window comparators detecting overvoltage/undervoltage thresholds. Use Value: Thermal hysteresis ≤0.08% ensures consistent trip points after repeated thermal cycling in under-hood environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM4040CIM3-3.0/NOPB | Same 3.0 V, Grade C tolerance, but SOT-23-3 with different marking and reel packaging; identical electrical specs. | No functional difference - used interchangeably where tape-and-reel vs. cut-tape logistics differ. | Select LM4040CIM3-3.0/NOPB for standard production reels; LM4040DIM3X-3.0/NOPB for optimized shipping units. |
| TL431ACDBVR | Adjustable 2.495 V shunt reference; requires two external resistors to set 3.0 V; higher 22 Ω dynamic impedance. | Less accurate at 3.0 V (±1% typical after resistor tolerance), higher noise (120 μVrms), and larger layout footprint. | Choose only if adjustable output or higher current capability (up to 100 mA) is required; otherwise LM4040DIM3X-3.0/NOPB offers superior precision and size. |
Compared with LM4040CIM3-3.0/NOPB, LM4040DIM3X-3.0/NOPB provides identical performance in a logistics-optimized reel format; versus TL431ACDBVR, it delivers 4× lower noise, 25× lower dynamic impedance, and eliminates resistor matching errors for fixed 3.0 V use.
Availability
LM4040DIM3X-3.0/NOPB is available at Aetrix Electronics and suitable for field transmitters, energy infrastructure meters, and analog input modules requiring stable component supply with guaranteed long-term continuity.
Supply support for LM4040DIM3X-3.0/NOPB 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 automotive-grade qualification.
The LM4040-N product line delivers micropower shunt voltage references for space-constrained, high-accuracy applications including industrial sensing, energy metering, and automotive subsystems-designed for reliability across extended temperature ranges.
FAQ
What is the maximum operating temperature range for LM4040DIM3X-3.0/NOPB?
The LM4040DIM3X-3.0/NOPB is rated for industrial temperature operation from −40°C to +85°C. Its electrical specifications-including ±0.5% initial tolerance and ≤100 ppm/°C temperature coefficient-are guaranteed across this full range. The device's junction temperature must not exceed 125°C, and derating applies above 25°C ambient per its RθJA = 291.9°C/W rating.
Does LM4040DIM3X-3.0/NOPB require an external capacitor for stability?
No, LM4040DIM3X-3.0/NOPB does not require an external capacitor for stability. Its internal design ensures unconditional stability with any capacitive load, including large bulk capacitors on the cathode node. This eliminates the need for output filtering components and reduces bill-of-materials count in compact designs.
How does the NC pin (Pin 3) function in LM4040DIM3X-3.0/NOPB?
In LM4040DIM3X-3.0/NOPB, Pin 3 is a no-connect terminal. TI specifies it must either float or be tied directly to the anode (Pin 2) to improve electromagnetic immunity-especially in high-noise environments near transformers or switching regulators. It is not internally bonded and carries no electrical function.
What is the minimum cathode current needed for LM4040DIM3X-3.0/NOPB to regulate at 3.0 V?
The LM4040DIM3X-3.0/NOPB requires a minimum cathode current of 62 μA at 25°C to maintain regulation at its nominal 3.0 V output. This increases slightly over temperature, reaching 65 μA across the full −40°C to +85°C range. Below this threshold, the device exits regulation and output voltage drops nonlinearly.
Is LM4040DIM3X-3.0/NOPB pin-compatible with other LM4040 variants in SOT-23-3?
Yes, LM4040DIM3X-3.0/NOPB shares identical SOT-23-3 (DBZ) pinout, footprint, and thermal characteristics with all LM4040-N and LM4040-Q1 variants in the same package-including LM4040AIM3X-3.0/NOPB and LM4040QDIM3X-3.0/NOPB. Only the grade (A/C/D/E), voltage (2.5 V/3.0 V/4.096 V/etc.), and qualification level differ.
LM4040DIM3X-3.0/NOPB 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:
- Active
- 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/NOPB FAQ
1.How can I place an order for LM4040DIM3X-3.0/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4040DIM3X-3.0/NOPB 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/NOPB reliable?
The price and inventory of LM4040DIM3X-3.0/NOPB 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/NOPB is usually 5 days.
3.What payment methods are accepted for LM4040DIM3X-3.0/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4040DIM3X-3.0/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4040DIM3X-3.0/NOPB?
LM4040DIM3X-3.0/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4040DIM3X-3.0/NOPB 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/NOPB?
For technical support, including LM4040DIM3X-3.0/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4040DIM3X-3.0/NOPB requirements.
6.How does Aetrix verify that LM4040DIM3X-3.0/NOPB is sourced from the original manufacturer or authorized distributors?
All LM4040DIM3X-3.0/NOPB 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/NOPB meets industry standards.
7.What is the process for return or replacement of LM4040DIM3X-3.0/NOPB?
All LM4040DIM3X-3.0/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM4040DIM3X-3.0/NOPB, 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/NOPB part is unused and in its original packaging.
Return procedure for LM4040DIM3X-3.0/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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