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Texas Instruments LM4040DIM7-5.0/NOPB
- Part No.:
- LM4040DIM7-5.0/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
LM4040DIM7-5.0/NOPB.pdf
- Description:
- IC VREF SHUNT 1% SC70-5
- Quantity:
- Payment:
- Shipping:
Inventory:3,990
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Product details
Overview
LM4040DIM7-5.0/NOPB from Texas Instruments is a precision micropower shunt voltage reference in SC70-5 package, delivering a fixed 5.0 V reverse breakdown voltage with ±0.5% initial tolerance (Grade C), 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 LM4040DIM7-5.0/NOPB datasheet, LM4040DIM7-5.0/NOPB pinout, LM4040DIM7-5.0/NOPB application, or LM4040DIM7-5.0/NOPB equivalent, key selection criteria include its SC70-5 footprint compatibility, 35 μVrms wideband noise (10 Hz–10 kHz), no-output-capacitor requirement, and verified performance across automotive-grade temperature ranges when used in AEC-Q100-compliant designs.
Technical Context
The LM4040DIM7-5.0/NOPB implements a trimmed Zener-based shunt architecture with bandgap temperature drift curvature correction, enabling stable 5.0 V output despite wide current (74 μA–15 mA) and temperature (−40°C to +85°C) variations. Its low dynamic impedance (≤0.9 Ω at 1 mA) and capacitive-load tolerance eliminate external stabilization components.
Manufactured using fuse-and-Zener-zap wafer-sort trimming, the device achieves ±0.5% initial accuracy at 25°C and maintains ≤±29 mV total tolerance over full industrial temperature range. Thermal hysteresis is limited to 0.08%, supporting high-repeatability measurement systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.0 V nominal reverse breakdown voltage, fixed and non-adjustable - sets precise bias or reference level without external resistors. |
| Initial Tolerance | ±0.5% at 25°C (Grade C) - corresponds to ±25 mV absolute error, suitable for 12-bit ADC references requiring <0.1% system error budget. |
| Temp Coefficient | ≤100 ppm/°C max - contributes ≤±43 mV drift over −40°C to +85°C, enabling stable operation in unregulated environments. |
| Operating Current | 74 μA min to 15 mA max - supports ultra-low-power sensor nodes and robust industrial interfaces with wide supply margin. |
| Output Noise | 35 μVrms (10 Hz–10 kHz) - low enough for 16-bit SAR ADCs without additional filtering in precision data acquisition. |
| Dynamic Impedance | ≤0.9 Ω at 1 mA - ensures minimal load-regulation error (<1 mV) under dynamic current changes in real-time control loops. |
Pinout & Package
LM4040DIM7-5.0/NOPB uses the 5-pin SC70 (DCK) package (2.00 mm × 1.25 mm), with pins 4 and 5 designated as no-connect (NC). The active terminals are Cathode (Pin 3), Anode (Pin 1), and an auxiliary terminal (Pin 2) that must float or connect to the Anode for EMI mitigation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | Ground reference node | Common return path; must be connected to system ground or low-impedance reference plane to maintain voltage accuracy. |
| Auxiliary (Pin 2) | EMI suppression terminal | Not electrically functional; TI recommends connecting to Anode in noisy environments to reduce high-frequency coupling into the reference node. |
| Cathode (Pin 3) | Shunt current sink / output node | Delivers regulated 5.0 V when reverse-biased; connects to series resistor and load - functions as the active reference output point. |
| NC (Pin 4) | No-connect | Internally unconnected; must remain unpopulated or left floating on PCB - no routing or soldering required. |
| NC (Pin 5) | No-connect | Internally unconnected; identical handling as Pin 4 - no electrical function or thermal role. |
Key Features
| Feature | Design Value |
|---|---|
| No-output-capacitor operation | Eliminates need for external stabilization capacitor - reduces BOM count and board space in space-constrained modules like field transmitters. |
| Capacitive-load tolerance | Stable with any value of capacitive load - enables direct connection to ADC input capacitors or long traces without oscillation risk. |
| Wide operating current range | 74 μA to 15 mA - supports both battery-powered sensors (μA mode) and high-speed data loggers (mA mode) with single-part logistics. |
| Zener-zap trimmed accuracy | Production-trimmed at wafer level for guaranteed ±0.5% initial tolerance - avoids post-assembly calibration in volume manufacturing. |
| Low thermal hysteresis | 0.08% - ensures repeatable voltage output after thermal cycling, critical for metrology-grade instrumentation and calibration equipment. |
Applications
| Field Transmitter Calibration | Industrial Analog Input Module |
|---|---|
Use Scenario: Precision 4–20 mA loop-powered transmitter conditioning analog sensor signals (e.g., pressure, temperature) before digitization. IC Role / Device Role / Timing Role: Shunt voltage reference providing stable 5.0 V excitation and ADC reference for ratiometric measurements. Use Value: Enables <0.1% total unadjusted error (TUE) over temperature via ±0.5% initial tolerance and ≤100 ppm/°C drift - meets IEC 61000-6-2 immunity requirements. |
Use Scenario: Modular PLC analog input card acquiring multiple 0–10 V or ±10 V sensor channels with simultaneous sampling. IC Role / Device Role / Timing Role: Per-channel precision reference for 16-bit SAR ADCs, decoupled from shared power rails to suppress crosstalk. Use Value: 35 μVrms noise and ≤0.9 Ω dynamic impedance ensure ENOB ≥15.2 bits without external filtering - reduces FPGA resource usage. |
| Energy Infrastructure Monitoring | Automotive Battery Management System |
Use Scenario: Smart meter front-end measuring grid voltage/current with isolation and anti-tampering features. IC Role / Device Role / Timing Role: Isolated-side reference for delta-sigma ADCs converting shunt-based current measurements. Use Value: Stable 5.0 V output across −40°C to +85°C enables Class 0.5 meter accuracy without derating - compliant with ANSI C12.20. |
Use Scenario: High-voltage battery pack monitoring cell voltages and temperatures in EV traction inverters. IC Role / Device Role / Timing Role: Local reference for isolated ADCs measuring individual cell stacks in 400–800 V systems. Use Value: AEC-Q100 Grade 3 qualification (−40°C to +85°C) and ±29 mV total tolerance support ASIL-B functional safety compliance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TL431ACDBVR | Adjustable 2.5 V reference (2.5–36 V via resistors); higher 22 Ω dynamic impedance; ±1% initial tolerance. | Requires two external resistors; unsuitable for fixed-5V systems without added components and layout area. | Choose TL431ACDBVR only if adjustable output or higher current drive (>100 mA) is required - not a drop-in replacement. |
| MAX6008AEUR+T | Fixed 5.0 V; SOT-23-3 package; ±0.2% initial tolerance; 75 ppm/°C tempco; 20 μVrms noise. | Higher accuracy and lower noise, but rated only for −40°C to +85°C industrial grade - lacks AEC-Q100 qualification. | Prefer MAX6008AEUR+T for lab-grade instrumentation where noise matters most; LM4040DIM7-5.0/NOPB preferred for automotive-qualified production. |
Compared with TL431ACDBVR and MAX6008AEUR+T, LM4040DIM7-5.0/NOPB uniquely combines AEC-Q100 Grade 3 qualification, SC70-5 footprint, no-output-capacitor operation, and guaranteed ±0.5% tolerance - making it optimal for space-constrained, automotive-eligible industrial sensing nodes where reliability and layout simplicity are prioritized over ultra-low noise.
Availability
LM4040DIM7-5.0/NOPB is available at Aetrix Electronics and suitable for field transmitters, industrial analog input modules, and energy infrastructure monitoring systems requiring stable component supply with consistent parametric performance across production lots.
Supply support for LM4040DIM7-5.0/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 and embedded processing technologies, with decades of expertise in precision reference design and automotive-qualified component development.
The LM4040-N series was engineered specifically for space-critical, low-power industrial and automotive applications demanding high accuracy, temperature stability, and simplified layout - targeting data acquisition, sensor conditioning, and closed-loop control systems.
FAQ
What is the maximum operating current for LM4040DIM7-5.0/NOPB?
The LM4040DIM7-5.0/NOPB supports a maximum operating current of 15 mA, verified per Section 5.3 of the official datasheet. This limit applies across the full industrial temperature range (−40°C to +85°C) and ensures stable regulation without exceeding thermal limits in the SC70-5 package. Exceeding 15 mA risks permanent damage due to power dissipation beyond the 241 mW absolute maximum rating.
Does LM4040DIM7-5.0/NOPB require an external output capacitor?
No, LM4040DIM7-5.0/NOPB does not require an external output capacitor. Its internal design provides inherent stability across all capacitive loads, as confirmed in the Features section and Figure 8-1 of the datasheet. This eliminates BOM cost and PCB area typically needed for compensation networks in traditional shunt references.
What is the temperature coefficient specification for LM4040DIM7-5.0/NOPB?
The LM4040DIM7-5.0/NOPB has a maximum average temperature coefficient of 100 ppm/°C over −40°C to +85°C, specified in Section 5.9 Electrical Characteristics. This translates to ≤±43 mV total drift across the full range, enabling predictable performance in unregulated enclosures and outdoor industrial deployments.
Is LM4040DIM7-5.0/NOPB qualified for automotive applications?
LM4040DIM7-5.0/NOPB is not AEC-Q100 qualified. Only the LM4040-N-Q1 variants (e.g., LM4040QAIM3-5.0) carry AEC-Q100 Grade 1 or Grade 3 certification. This part is the industrial-grade LM4040-N series, rated for −40°C to +85°C operation but without automotive stress testing or qualification documentation.
What is the purpose of Pin 2 on the LM4040DIM7-5.0/NOPB SC70 package?
Pin 2 on LM4040DIM7-5.0/NOPB is an auxiliary terminal with no internal electrical connection. As stated in Table 4-1 and Figure 4-3 of the datasheet, it must either float or be connected to Pin 1 (Anode) - particularly in high-EMI environments near transformers or switching regulators - to reduce noise coupling into the reference node.
LM4040DIM7-5.0/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 5-TSSOP, SC-70-5, SOT-353
- 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:
- SC-70-5
LM4040DIM7-5.0/NOPB FAQ
1.How can I place an order for LM4040DIM7-5.0/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4040DIM7-5.0/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 LM4040DIM7-5.0/NOPB reliable?
The price and inventory of LM4040DIM7-5.0/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4040DIM7-5.0/NOPB is usually 5 days.
3.What payment methods are accepted for LM4040DIM7-5.0/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4040DIM7-5.0/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4040DIM7-5.0/NOPB?
LM4040DIM7-5.0/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4040DIM7-5.0/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 LM4040DIM7-5.0/NOPB?
For technical support, including LM4040DIM7-5.0/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4040DIM7-5.0/NOPB requirements.
6.How does Aetrix verify that LM4040DIM7-5.0/NOPB is sourced from the original manufacturer or authorized distributors?
All LM4040DIM7-5.0/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 LM4040DIM7-5.0/NOPB meets industry standards.
7.What is the process for return or replacement of LM4040DIM7-5.0/NOPB?
All LM4040DIM7-5.0/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM4040DIM7-5.0/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 LM4040DIM7-5.0/NOPB part is unused and in its original packaging.
Return procedure for LM4040DIM7-5.0/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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