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Texas Instruments LM4040CIM7-2.0/NOPB
- Part No.:
- LM4040CIM7-2.0/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
LM4040CIM7-2.0/NOPB.pdf
- Description:
- IC VREF SHUNT 0.5% SC70-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,658
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Product details
Overview
LM4040CIM7-2.0/NOPB from Texas Instruments is a precision micropower shunt voltage reference in SC70-3 package, delivering a fixed 2.048 V reverse breakdown voltage with ±0.5% initial tolerance (C grade), 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 and field transmitters for stable ADC biasing.
For engineers reviewing the LM4040CIM7-2.0/NOPB datasheet, LM4040CIM7-2.0/NOPB pinout, LM4040CIM7-2.0/NOPB application, or LM4040CIM7-2.0/NOPB equivalent, key selection criteria include its SC70-3 footprint, shunt topology, 2.048 V nominal output, industrial temperature range, and low dynamic impedance (0.9 Ω typical) under 1 mA test current.
Technical Context
The LM4040CIM7-2.0/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 vs. temperature. Its shunt architecture sinks current to regulate cathode voltage relative to anode (grounded), enabling simple two-terminal operation.
It tolerates capacitive loads without oscillation and maintains stability across 60 μA–15 mA operating current. The device exhibits 0.08% thermal hysteresis after cycling between −40°C and +125°C, and long-term drift of 120 ppm over 1000 hours at 25°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.048 V nominal reverse breakdown voltage - sets precise reference point for ADCs and sensor signal chains |
| Initial Tolerance | ±0.5% at 25°C (C grade) - enables high-accuracy calibration without post-manufacture trimming |
| Temp Coefficient | ≤100 ppm/°C (max) over −40°C to +85°C - ensures ≤±0.052 V drift across full industrial range |
| Operating Current | 60 μA to 15 mA - supports ultra-low-power sensor nodes and high-current analog front-ends |
| Noise (10 Hz–10 kHz) | 35 μVRMS - minimizes quantization error in 16-bit+ data acquisition systems |
| Dynamic Impedance | 0.9 Ω typical at 1 mA - provides tight load regulation (<1 mV change per 1 mA load shift) |
| Thermal Hysteresis | 0.08% - guarantees repeatable voltage after thermal cycling in automotive and industrial environments |
Pinout & Package
LM4040CIM7-2.0/NOPB is housed in a 3-pin SC70 (DCK) package (2.00 mm × 1.25 mm body size) with exposed pad not electrically connected. Pin 1 is Anode (ground), Pin 2 is Cathode (output/reference node), and Pin 3 is NC (no connect, must float or tie to anode).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | Reference ground node | Must be connected to system ground; defines voltage reference plane for cathode output |
| Cathode (Pin 2) | Shunt current sink / output terminal | Delivers regulated 2.048 V when current flows into this pin; connects to divider or load |
| NC (Pin 3) | No-connect terminal | Internally unconnected; TI recommends floating or tying to anode in high-EMI environments |
Key Features
| Feature | Design Value |
|---|---|
| No external capacitor required | Enables space-constrained PCB layouts and eliminates capacitor-related aging or ESR instability |
| Capacitive load tolerance | Stable with any output capacitance - simplifies filtering in noisy industrial power rails |
| Zener-zap voltage trim | Ensures ±0.5% initial accuracy without laser trimming - improves manufacturing yield and cost |
| Bandgap temperature curvature correction | Reduces parabolic drift over temperature - achieves flat VR vs. T response in extended range |
| Low quiescent current | 60 μA minimum operating current - extends battery life in portable field instruments |
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 providing stable 2.048 V for DAC and current-sense amplifier biasing. Use Value: Enables <12-bit effective resolution over −40°C to +85°C with <±0.5% total error budget. |
Use Scenario: Smart meter voltage sensing stage with isolation and anti-tampering features. IC Role / Device Role / Timing Role: Precision reference for 24-bit sigma-delta ADC measuring grid phase voltage. Use Value: Delivers 35 μVRMS noise floor and 0.08% thermal hysteresis to meet IEC 62053-22 Class 0.5 accuracy. |
| Data Acquisition | Analog Input Module |
Use Scenario: Portable handheld multimeter with autoranging and auto-zero functions. IC Role / Device Role / Timing Role: Primary reference for dual-slope integrator and offset calibration circuitry. Use Value: Maintains ±0.5% initial tolerance and <100 ppm/°C drift across battery-operated temperature excursions. |
Use Scenario: PLC analog input card accepting ±10 V, 0–20 mA, and thermocouple signals. IC Role / Device Role / Timing Role: Common reference for multiplexed signal conditioning path and ADC driver stage. Use Value: Supports simultaneous multi-channel accuracy with <1 mV load regulation error at 15 mA sink current. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM4040AIM7-2.0/NOPB | ±0.1% initial tolerance (A grade), same SC70-3 package and 2.048 V output | Required where tighter initial accuracy needed for factory calibration or metrology-grade DAQ | Select when ±0.1% tolerance justifies higher cost; identical layout and thermal behavior |
| TLV431ACDBVR | Adjustable 1.24–6 V output, 1% initial tolerance, 3-pin SOT-23, 0.3 Ω dynamic impedance | Suitable for designs needing programmable reference or lower cost, but lacks 2.048 V exact match | Choose for flexibility and cost-sensitive applications; requires external resistor network and has higher noise (60 μVRMS) |
Compared with LM4040CIM7-2.0/NOPB, the LM4040AIM7-2.0/NOPB offers 5× tighter initial tolerance at same footprint, while TLV431ACDBVR trades fixed 2.048 V accuracy for adjustability and lower unit cost-making it viable only where 2.048 V isn't mandatory.
Availability
LM4040CIM7-2.0/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 LM4040CIM7-2.0/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 was developed for space-constrained, high-stability applications including industrial automation, automotive sensors, and portable instrumentation-emphasizing micropower operation, low noise, and robust thermal performance.
FAQ
What is the maximum operating current for LM4040CIM7-2.0/NOPB?
The LM4040CIM7-2.0/NOPB supports a maximum operating current of 15 mA. This upper limit is defined by absolute maximum ratings and thermal constraints of the SC70-3 package, which has a 241 mW power dissipation rating at 25°C ambient. Exceeding 15 mA risks exceeding junction temperature limits or violating safe operating area specifications.
Does LM4040CIM7-2.0/NOPB require an external capacitor for stability?
No, LM4040CIM7-2.0/NOPB does not require an external output capacitor. Its internal design eliminates the need for stabilization capacitance while maintaining stability with any capacitive load-a key advantage for compact, low-component-count designs like portable data loggers and sensor nodes.
What is the temperature range supported by LM4040CIM7-2.0/NOPB?
The LM4040CIM7-2.0/NOPB is rated for the industrial temperature range of −40°C to +85°C. This is confirmed in Section 5.3 (Recommended Operating Conditions) and Electrical Characteristics tables (e.g., 5.6 and 5.9) for C-grade devices in SC70 and SOT-23 packages.
How does the NC pin (Pin 3) function on LM4040CIM7-2.0/NOPB?
Pin 3 of LM4040CIM7-2.0/NOPB is a no-connect terminal. Per TI's datasheet (Table 4-1), it must be left floating or tied to the anode (Pin 1). In high-EMI environments-such as near switching power supplies or motor drives-TI recommends connecting Pin 3 to Pin 1 to reduce noise susceptibility.
Is LM4040CIM7-2.0/NOPB AEC-Q100 qualified?
No, LM4040CIM7-2.0/NOPB is not AEC-Q100 qualified. Only variants with "-Q1" suffix (e.g., LM4040CIM7-2.0Q1) carry AEC-Q100 Grade 3 qualification. The LM4040CIM7-2.0/NOPB is specified for industrial use and lacks automotive stress testing and documentation required for automotive deployment.
LM4040CIM7-2.0/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):
- 2.048V
- Voltage - Output (Max):
- -
- Current - Output:
- 15 mA
- Tolerance:
- ±0.5%
- Temperature Coefficient:
- 100ppm/°C
- Noise - 0.1Hz to 10Hz:
- -
- Noise - 10Hz to 10kHz:
- 35µVrms
- Voltage - Input:
- -
- Current - Supply:
- -
- Current - Cathode:
- 65 µA
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-5
LM4040CIM7-2.0/NOPB FAQ
1.How can I place an order for LM4040CIM7-2.0/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4040CIM7-2.0/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 LM4040CIM7-2.0/NOPB reliable?
The price and inventory of LM4040CIM7-2.0/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4040CIM7-2.0/NOPB is usually 5 days.
3.What payment methods are accepted for LM4040CIM7-2.0/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4040CIM7-2.0/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4040CIM7-2.0/NOPB?
LM4040CIM7-2.0/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4040CIM7-2.0/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 LM4040CIM7-2.0/NOPB?
For technical support, including LM4040CIM7-2.0/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4040CIM7-2.0/NOPB requirements.
6.How does Aetrix verify that LM4040CIM7-2.0/NOPB is sourced from the original manufacturer or authorized distributors?
All LM4040CIM7-2.0/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 LM4040CIM7-2.0/NOPB meets industry standards.
7.What is the process for return or replacement of LM4040CIM7-2.0/NOPB?
All LM4040CIM7-2.0/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM4040CIM7-2.0/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 LM4040CIM7-2.0/NOPB part is unused and in its original packaging.
Return procedure for LM4040CIM7-2.0/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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