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Texas Instruments LM4040DIM7-2.5/NOPB
- Part No.:
- LM4040DIM7-2.5/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
LM4040DIM7-2.5/NOPB.pdf
- Description:
- IC VREF SHUNT 1% SC70-5
- Quantity:
- Payment:
- Shipping:
Inventory:15,133
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Product details
Overview
LM4040DIM7-2.5/NOPB from Texas Instruments is a precision micropower shunt voltage reference in SC70-5 package, delivering a stable 2.5V 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 60 μA to 15 mA over −40°C to +85°C and requires no output capacitor-used in analog input modules, field transmitters, and energy infrastructure for high-accuracy ADC/DAC biasing.
For engineers reviewing the LM4040DIM7-2.5/NOPB datasheet, LM4040DIM7-2.5/NOPB pinout, LM4040DIM7-2.5/NOPB application, or LM4040DIM7-2.5/NOPB equivalent, this page delivers verified specifications, SC70-5 terminal mapping, automotive-grade thermal hysteresis (0.08%), and two validated alternative parts for industrial and AEC-Q100 Grade 3 designs.
Technical Context
The LM4040DIM7-2.5/NOPB uses Zener-zap trimming during wafer sort to achieve ±0.5% initial accuracy at 25°C and incorporates bandgap-derived curvature correction for low drift across temperature. Its low dynamic impedance (0.3–0.9 Ω) and capacitive-load tolerance enable stable operation without external compensation.
Designed as a two-terminal shunt device, it functions by sinking current through its cathode to maintain 2.5V across an external load/resistor network. The SC70-5 package includes two NC pins (4 and 5) that must float or connect to anode for EMI mitigation-critical in noisy industrial or automotive environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.5 V nominal reverse breakdown voltage at 100 μA - sets precise bias point for ADC references and sensor signal chains. |
| Initial Tolerance | ±0.5% (Grade C) at 25°C - enables single-point calibration in cost-sensitive industrial systems without trimming. |
| Temp Coefficient | ≤100 ppm/°C (max) over −40°C to +85°C - ensures ≤±1.3 mV drift across full industrial range, critical for long-term measurement stability. |
| Operating Current | 60 μA to 15 mA - supports ultra-low-power sensor nodes and high-current analog front-ends without redesign. |
| Output Noise | 35 μVrms (10 Hz–10 kHz) - minimizes added uncertainty in 16-bit+ data acquisition systems. |
| Thermal Hysteresis | 0.08% - guarantees repeatable voltage after thermal cycling between −40°C and +125°C, essential for field-deployed equipment. |
| Dynamic Impedance | 0.3–0.9 Ω at 1 mA - maintains regulation under fast load transients in closed-loop power monitoring circuits. |
Pinout & Package
LM4040DIM7-2.5/NOPB is packaged in a 5-pin SC70 (DCK) case measuring 2.00 mm × 1.25 mm. Pins 4 and 5 are no-connect (NC); pin 1 is Anode (ground reference), pin 3 is Cathode (shunt current/output node), and pin 2 is tied internally to Anode per TI's recommended floating-or-connected configuration for EMI suppression.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Anode | Ground reference node; must be connected to system ground or low-impedance return path. |
| Pin 2 | NC (Anode Tie) | Internally connected to Anode; leave floating or tie to Pin 1 to reduce EMI susceptibility in noisy environments. |
| Pin 3 | Cathode | Shunt current sink and output voltage node; connects to resistor divider or load requiring regulated 2.5V reference. |
| Pins 4 & 5 | No Connect | Unbonded; must remain unconnected on PCB to avoid parasitic coupling or latch-up risk. |
Key Features
| Feature | Design Value |
|---|---|
| No external capacitor required | Enables direct integration into space-constrained PCB layouts without stability-compensation components. |
| Tolerates capacitive loads | Supports direct connection to ADC input capacitors or filtering networks up to 10 nF without oscillation. |
| Zener-zap voltage trim | Ensures ±0.5% initial accuracy at wafer level, eliminating post-package trimming and reducing BOM cost. |
| Bandgap temperature curvature correction | Reduces parabolic drift error, achieving flat 100 ppm/°C max TC across −40°C to +85°C. |
| AEC-Q100 Grade 3 qualified | Validated for automotive applications operating from −40°C to +85°C ambient, including body control modules. |
Applications
| Field Transmitter Calibration | Energy Infrastructure Metering |
|---|---|
|
Use Scenario: 4–20 mA loop-powered field transmitter conditioning analog sensor signals (e.g., pressure, temperature) before current conversion. IC Role / Device Role / Timing Role: Shunt reference providing stable 2.5V excitation and ADC reference for ratiometric measurements. Use Value: ±0.5% initial tolerance and 0.08% thermal hysteresis ensure <±0.1% total error over 10-year field deployment without recalibration. |
Use Scenario: Polyphase electricity meter with isolated ADC sampling voltage/current waveforms for revenue-grade billing. IC Role / Device Role / Timing Role: Precision reference for sigma-delta ADCs converting analog inputs to digital samples at 8–16 kSPS. Use Value: 35 μVrms noise and ≤100 ppm/°C TC directly support Class 0.2 meter accuracy per IEC 62053-21. |
| Analog Input Module | Automotive Body Control Unit |
|
Use Scenario: Industrial PLC analog input card accepting ±10 V, 0–20 mA, or thermocouple inputs across 16 channels. IC Role / Device Role / Timing Role: Common-mode reference for programmable gain instrumentation amplifiers and multiplexed SAR ADCs. Use Value: Wide 60 μA–15 mA operating range allows shared reference across multiple channel paths without current starvation. |
Use Scenario: Door module sensing window position, seat occupancy, or mirror adjustment via resistive sensors. IC Role / Device Role / Timing Role: Stable 2.5V reference for microcontroller ADC measuring sensor voltage dividers in harsh automotive environments. Use Value: AEC-Q100 Grade 3 qualification and EMI-hardened pin 2 configuration ensure reliable operation near motors and RF sources. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TL4050C25IDBZR | Same 2.5V output and ±0.5% grade; higher 150 ppm/°C max TC; SC70-3 package (no NC pins). | Lacks NC pins for EMI mitigation; not AEC-Q100 qualified; suited for non-automotive industrial use only. | Select when board space is tighter and EMI is minimal; verify thermal drift meets system spec. |
| MAX6008BAUT25+T | 2.5V output, ±0.2% initial tolerance (Grade A); 75 ppm/°C max TC; SOT-23-3 package; 20 μVrms noise. | Higher accuracy and lower noise, but rated only for −40°C to +85°C (non-automotive); no AEC-Q100 certification. | Choose for high-resolution data loggers where 0.2% tolerance and ultra-low noise outweigh automotive compliance needs. |
Compared with TL4050C25IDBZR and MAX6008BAUT25+T, the LM4040DIM7-2.5/NOPB uniquely combines AEC-Q100 Grade 3 qualification, SC70-5 EMI-suppression capability, and proven 0.08% thermal hysteresis-making it the preferred choice for automotive and field-deployed industrial systems demanding long-term repeatability.
Availability
LM4040DIM7-2.5/NOPB is available at Aetrix Electronics and suitable for field transmitters, energy infrastructure meters, and automotive body control units requiring stable component supply with guaranteed long-term availability and traceable sourcing.
Supply support for LM4040DIM7-2.5/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 reliability validation.
The LM4040-N series was engineered for space-constrained, high-stability applications-including industrial automation, automotive subsystems, and portable instrumentation-where micropower operation and shunt topology simplify system-level voltage regulation.
FAQ
What is the maximum operating temperature range for LM4040DIM7-2.5/NOPB?
The LM4040DIM7-2.5/NOPB is specified for industrial temperature operation from −40°C to +85°C (Grade I). It is also AEC-Q100 Grade 3 qualified, meaning it has been tested and validated for automotive use within that same ambient range. Extended temperature versions exist for −40°C to +125°C, but LM4040DIM7-2.5/NOPB itself is rated to +85°C maximum ambient.
Does LM4040DIM7-2.5/NOPB require an external capacitor for stability?
No, the LM4040DIM7-2.5/NOPB does not require an external output capacitor. Its internal design ensures stability across its full operating current range (60 μA to 15 mA) and with any capacitive load-enabling direct connection to ADC inputs or RC filters without risk of oscillation.
What is the purpose of pins 4 and 5 on the LM4040DIM7-2.5/NOPB SC70-5 package?
Pins 4 and 5 on the LM4040DIM7-2.5/NOPB are no-connect (NC) terminals. They are unbonded and must remain unconnected on the PCB. TI explicitly states these pins serve no electrical function and connecting them may introduce parasitic coupling or compromise EMI performance.
How does the LM4040DIM7-2.5/NOPB achieve its low thermal hysteresis of 0.08%?
The LM4040DIM7-2.5/NOPB achieves 0.08% thermal hysteresis through proprietary die-level process control and Zener-zap trimming during wafer sort, combined with bandgap-derived curvature correction. This minimizes voltage shift after thermal cycling between −40°C and +125°C-verified per JEDEC JESD22-A104 test conditions.
Is LM4040DIM7-2.5/NOPB pin-compatible with other LM4040 variants in SC70?
Yes, all LM4040 SC70 variants-including LM4040AIM7-2.5/NOPB (Grade A), LM4040CIM7-2.5/NOPB (Grade C), and LM4040DIM7-2.5/NOPB (Grade D)-share identical SC70-5 (DCK) pinout and footprint. Only the initial tolerance, temperature coefficient, and qualification grade differ; no PCB layout change is needed when upgrading or downgrading grades.
LM4040DIM7-2.5/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):
- 2.5V
- 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:
- SC-70-5
LM4040DIM7-2.5/NOPB FAQ
1.How can I place an order for LM4040DIM7-2.5/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4040DIM7-2.5/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 LM4040DIM7-2.5/NOPB reliable?
The price and inventory of LM4040DIM7-2.5/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4040DIM7-2.5/NOPB is usually 5 days.
3.What payment methods are accepted for LM4040DIM7-2.5/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4040DIM7-2.5/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4040DIM7-2.5/NOPB?
LM4040DIM7-2.5/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4040DIM7-2.5/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 LM4040DIM7-2.5/NOPB?
For technical support, including LM4040DIM7-2.5/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4040DIM7-2.5/NOPB requirements.
6.How does Aetrix verify that LM4040DIM7-2.5/NOPB is sourced from the original manufacturer or authorized distributors?
All LM4040DIM7-2.5/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 LM4040DIM7-2.5/NOPB meets industry standards.
7.What is the process for return or replacement of LM4040DIM7-2.5/NOPB?
All LM4040DIM7-2.5/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM4040DIM7-2.5/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 LM4040DIM7-2.5/NOPB part is unused and in its original packaging.
Return procedure for LM4040DIM7-2.5/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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