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Texas Instruments LM4040DIM3-5.0/NOPB
- Part No.:
- LM4040DIM3-5.0/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
LM4040DIM3-5.0/NOPB.pdf
- Description:
- IC VREF SHUNT 1% SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:11,016
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Product details
Overview
LM4040DIM3-5.0/NOPB from Texas Instruments is a precision micropower shunt voltage reference in SOT-23 package, delivering a fixed 5.0 V reverse breakdown voltage with ±1.0% initial tolerance (Grade D), 100 ppm/°C max temperature coefficient, and stable operation from 74 μA to 15 mA over −40°C to +85°C. It serves as a compact, capacitor-free reference for analog-to-digital converters and sensor signal conditioning in industrial data acquisition systems.
For engineers reviewing the LM4040DIM3-5.0/NOPB datasheet, LM4040DIM3-5.0/NOPB pinout, LM4040DIM3-5.0/NOPB application, or LM4040DIM3-5.0/NOPB equivalent, key selection factors include its Grade D accuracy, SOT-23 thermal performance (RθJA = 291.9°C/W), low 35 μVrms wideband noise, and compatibility with capacitive loads without external stabilization.
Technical Context
The LM4040DIM3-5.0/NOPB uses Zener-zap trimming during wafer sort to achieve ±1.0% initial voltage tolerance at 25°C and integrates bandgap-derived temperature drift curvature correction. Its shunt architecture requires an external current-limiting resistor and operates with zero output capacitance dependency.
Designed for space-constrained PCBs, it maintains stability across its full 74 μA–15 mA operating current range and exhibits low dynamic impedance (0.3–1.1 Ω) to minimize load regulation error-critical for high-resolution ADC biasing and precision current-source references.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.0 V nominal reverse breakdown voltage; sets precise bias point for ADC references and sensor excitation circuits. |
| Initial Tolerance | ±1.0% (Grade D) at 25°C; corresponds to ±50 mV absolute error, enabling mid-accuracy industrial measurement systems. |
| Temp Coefficient | Max 100 ppm/°C over −40°C to +85°C; contributes ≤±5.2 mV drift across full range, supporting stable 12-bit+ conversion accuracy. |
| Operating Current | 74 μA min to 15 mA max; allows ultra-low-power sensor nodes and robust high-current reference buffering. |
| Output Noise | 35 μVrms (10 Hz–10 kHz); limits quantization uncertainty in 16-bit ADC front-ends without added filtering. |
| Dynamic Impedance | 0.3–1.1 Ω; ensures <0.1 mV load-induced error at 1 mA current step, critical for dynamic sensor excitation. |
Pinout & Package
SOT-23 (DBZ) package: 3-pin surface-mount, 2.92 mm × 1.30 mm body size, JEDEC MO-178 compatible. Thermal resistance RθJA = 291.9°C/W (board-mounted).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (Pin 1) | Shunt current input / output voltage node | Connected to regulated 5.0 V rail; sinks all reference current; voltage accuracy defined here. |
| Anode (Pin 2) | Reference ground return | Must be connected to system ground; forms the reference potential for cathode voltage. |
| NC (Pin 3) | No-connect terminal | Internally unconnected; must float or tie to anode per EMI mitigation guidance in noisy environments. |
Key Features
| Feature | Design Value |
|---|---|
| No output capacitor required | Enables direct integration into space-limited layouts without stability-compromising bypass components. |
| Tolerates capacitive loads | Supports direct connection to ADC input capacitors or long traces without oscillation risk. |
| Wide operating current range | 74 μA–15 mA span accommodates both battery-powered sensors and high-drive analog front-ends. |
| Low temperature coefficient | 100 ppm/°C max ensures predictable drift behavior across industrial temperature extremes. |
| Zener-zap voltage trim | Factory-trimmed accuracy eliminates post-assembly calibration for cost-sensitive production lines. |
Applications
| Field Transmitters | Energy Infrastructure |
|---|---|
Use Scenario: 4–20 mA loop-powered pressure/temperature transmitters in oil & gas plants. IC Role / Device Role / Timing Role: Shunt voltage reference for DAC output scaling and current-loop compliance voltage generation. Use Value: ±1.0% initial tolerance and 100 ppm/°C TC enable <0.25% total error over −40°C to +85°C without recalibration. | Use Scenario: Smart meter voltage monitoring and anti-tampering detection circuits. IC Role / Device Role / Timing Role: Precision 5.0 V reference for metrology-grade ADCs measuring grid voltage harmonics. Use Value: 35 μVrms low-noise performance preserves SNR in 24-bit sigma-delta converters sampling at 1 kSPS. |
| Data Acquisition | Analog Input Module |
Use Scenario: Modular PLC analog input cards with multiple isolated channels. IC Role / Device Role / Timing Role: Local reference for each channel's instrumentation amplifier and SAR ADC stage. Use Value: SOT-23 footprint minimizes board area per channel; 74 μA min current enables low-power standby modes. | Use Scenario: Industrial HART-enabled analog input modules with loop power and digital overlay. IC Role / Device Role / Timing Role: Stable 5.0 V reference for HART modem biasing and ADC reference in shared power domains. Use Value: Capacitive-load tolerance prevents instability when driving HART coupling capacitors and ESD protection networks. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TL431CDBZR | Adjustable 2.5 V reference; requires two external resistors; higher 2.5 Ω dynamic impedance. | Used where programmable output or higher current (>100 mA) is needed; less suitable for fixed 5.0 V ultra-low-noise apps. | Select TL431CDBZR only if adjustable output or higher sink current is mandatory; LM4040DIM3-5.0/NOPB offers superior noise and tighter fixed-voltage accuracy. |
| MAX6008AEUR+T | 5.0 V shunt reference; ±0.2% initial tolerance (Grade A); 30 ppm/°C TC; SC70-3 package. | Better accuracy and lower drift, but higher cost and limited automotive qualification; no AEC-Q100 option. | Choose MAX6008AEUR+T for metrology-grade systems needing <±0.5 mV total error; LM4040DIM3-5.0/NOPB balances cost, qualification, and industrial-grade performance. |
Compared with TL431CDBZR and MAX6008AEUR+T, the LM4040DIM3-5.0/NOPB delivers optimal trade-offs for cost-sensitive industrial DAQ: fixed 5.0 V output eliminates resistor errors, SOT-23 thermal performance supports dense layouts, and AEC-Q100 Grade 3 qualification enables reuse in automotive subsystems.
Availability
LM4040DIM3-5.0/NOPB is available at Aetrix Electronics and suitable for field transmitters, energy infrastructure monitoring, and analog input modules requiring stable component supply across extended temperature ranges and multi-year production cycles.
Supply support for LM4040DIM3-5.0/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, embedded processing, and connectivity technologies, with decades of expertise in precision reference design.
The LM4040-N series targets space-constrained, low-power industrial and automotive systems requiring stable, fixed-output shunt references without external capacitors or trimming.
FAQ
What is the minimum operating current for LM4040DIM3-5.0/NOPB?
The LM4040DIM3-5.0/NOPB requires a minimum operating current of 74 μA at 25°C to maintain regulation within specification. This value increases slightly at temperature extremes-up to 70 μA at −40°C to +85°C per datasheet Section 5.3. Below this threshold, the device exits regulation and output voltage collapses. Designers must size the series current-limiting resistor accordingly using worst-case supply voltage and load conditions.
Does LM4040DIM3-5.0/NOPB require an output capacitor?
No, the LM4040DIM3-5.0/NOPB does not require an output capacitor for stability. Its internal design eliminates the need for external stabilization, unlike many older shunt references. It remains stable even when driving capacitive loads up to several nanofarads-making it ideal for direct connection to ADC input capacitors or long PCB traces without risk of oscillation.
What is the temperature coefficient of LM4040DIM3-5.0/NOPB?
The LM4040DIM3-5.0/NOPB has a maximum average temperature coefficient of 100 ppm/°C over the industrial temperature range (−40°C to +85°C). This means its 5.0 V output may drift by up to ±5.2 mV across that full range. The coefficient is measured under specified test conditions (IR = 1 mA) and reflects the worst-case curvature-corrected drift behavior inherent to its Zener-bandgap hybrid structure.
Is LM4040DIM3-5.0/NOPB qualified for automotive use?
The LM4040DIM3-5.0/NOPB is not AEC-Q100 qualified. Only variants with "-Q1" suffix (e.g., LM4040DQIM3-5.0/NOPB) carry AEC-Q100 Grade 3 certification for automotive applications. This part is rated for industrial temperature range (−40°C to +85°C) and intended for industrial, energy, and general-purpose analog systems-not safety-critical automotive ECUs.
What package type is used for LM4040DIM3-5.0/NOPB?
The LM4040DIM3-5.0/NOPB uses the SOT-23 (DBZ) package: a 3-pin surface-mount outline measuring 2.92 mm × 1.30 mm. Pin 1 is Cathode, Pin 2 is Anode, and Pin 3 is NC (no-connect). This JEDEC-standard package supports automated assembly and provides RθJA = 291.9°C/W when mounted on a standard FR-4 PCB with recommended copper land patterns.
LM4040DIM3-5.0/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):
- 5V
- 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:
- 85 µA
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
LM4040DIM3-5.0/NOPB FAQ
1.How can I place an order for LM4040DIM3-5.0/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4040DIM3-5.0/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 LM4040DIM3-5.0/NOPB reliable?
The price and inventory of LM4040DIM3-5.0/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4040DIM3-5.0/NOPB is usually 5 days.
3.What payment methods are accepted for LM4040DIM3-5.0/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4040DIM3-5.0/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4040DIM3-5.0/NOPB?
LM4040DIM3-5.0/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4040DIM3-5.0/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 LM4040DIM3-5.0/NOPB?
For technical support, including LM4040DIM3-5.0/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4040DIM3-5.0/NOPB requirements.
6.How does Aetrix verify that LM4040DIM3-5.0/NOPB is sourced from the original manufacturer or authorized distributors?
All LM4040DIM3-5.0/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 LM4040DIM3-5.0/NOPB meets industry standards.
7.What is the process for return or replacement of LM4040DIM3-5.0/NOPB?
All LM4040DIM3-5.0/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM4040DIM3-5.0/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 LM4040DIM3-5.0/NOPB part is unused and in its original packaging.
Return procedure for LM4040DIM3-5.0/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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