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Texas Instruments LM4040DIM7-2.0/NOPB
- Part No.:
- LM4040DIM7-2.0/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
LM4040DIM7-2.0/NOPB.pdf
- Description:
- IC VREF SHUNT 1% SC70-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,887
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Product details
Overview
LM4040DIM7-2.0/NOPB from Texas Instruments is a precision micropower shunt voltage reference in SC70-5 package, delivering a fixed 2.048V reverse breakdown voltage with ±10 mV (±0.49%) initial tolerance at 25°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.
For engineers reviewing the LM4040DIM7-2.0/NOPB datasheet, LM4040DIM7-2.0/NOPB pinout, LM4040DIM7-2.0/NOPB application, or LM4040DIM7-2.0/NOPB equivalent, key selection criteria include industrial-grade temperature stability, low-noise performance in space-constrained analog signal chains, compatibility with capacitive loads, and absence of external stabilization requirements.
Technical Context
The LM4040DIM7-2.0/NOPB uses Zener-zap trimming during wafer sort to achieve tight initial voltage accuracy and incorporates bandgap-derived temperature drift curvature correction. Its low dynamic impedance (≤0.9 Ω at 1 mA) ensures stable regulation across load and temperature variations.
Designed as a two-terminal shunt device, it functions by sinking current through its cathode to maintain a precise voltage between cathode and anode. The SC70-5 package includes two NC pins (pins 4 and 5), with pin 2 designated as cathode and pin 1 as anode - enabling direct integration into high-density PCB layouts without layout-sensitive compensation networks.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.048 V nominal reverse breakdown voltage - enables accurate 12-bit ADC reference scaling (e.g., 2.048 V = 1 LSB per mV for 2048-step full scale) |
| Initial Tolerance | ±10 mV (±0.49%) at 25°C - meets mid-tier precision requirements for industrial data acquisition without calibration |
| Temp Coefficient | ≤100 ppm/°C - contributes ≤±8.2 mV error over −40°C to +85°C ambient, supporting stable operation in uncontrolled environments |
| Operating Current | 60 μA to 15 mA - supports ultra-low-power sensor nodes and high-current analog front-ends with single-component flexibility |
| Output Noise | 35 μVrms (10 Hz–10 kHz) - preserves SNR in precision instrumentation amplifiers and 16-bit+ SAR ADC references |
| Dynamic Impedance | ≤0.9 Ω at 1 mA - minimizes load-induced voltage shift in varying current-sink applications |
| Thermal Hysteresis | 0.08% - ensures repeatable voltage after thermal cycling, critical for field-deployed energy infrastructure monitoring |
Pinout & Package
LM4040DIM7-2.0/NOPB is housed in a 5-pin SC70 (DCK) package (2.00 mm × 1.25 mm body), with pins 4 and 5 internally unconnected. Pin 1 is Anode (ground reference), pin 2 is Cathode (shunt current path and output node), and pin 3 is a floating or anode-connected terminal used for EMI mitigation in noisy environments.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (Anode) | Reference ground node | Must be connected to system ground; establishes the 0 V reference for the 2.048 V output at cathode |
| Pin 2 (Cathode) | Shunt current sink / output | Provides regulated 2.048 V relative to pin 1; sinks all excess current to maintain voltage stability |
| Pin 3 | EMI suppression terminal | Optional connection to pin 1; reduces sensitivity to high-frequency noise near transformers or switching regulators |
| Pins 4 & 5 | No-connect (NC) | Internally unconnected; must remain unpopulated or left floating on PCB - no routing or soldering required |
Key Features
| Feature | Design Value |
|---|---|
| No external capacitor required | Eliminates BOM cost and board area for stabilization, simplifying layout in space-constrained SC70 designs |
| Tolerates capacitive loads | Enables direct buffering with op-amps or driving of ADC sample capacitors without oscillation risk |
| Zener-zap voltage trim | Ensures production-grade accuracy without post-package trimming, improving yield and long-term consistency |
| Low 35 μVrms noise | Supports high-resolution measurement systems where reference noise dominates total system ENOB |
| Wide 60 μA–15 mA operating range | Permits use in both battery-powered IoT sensors and high-speed data acquisition channels with one part number |
Applications
| Field Transmitters | Energy Infrastructure |
|---|---|
Use Scenario: 4–20 mA loop-powered pressure/temperature transmitters in oil & gas wellheads. IC Role / Device Role / Timing Role: Shunt reference providing excitation voltage for bridge sensors and ADC reference for digitizing analog outputs. Use Value: Stable 2.048 V reference enables 12-bit linearity over −40°C to +85°C without recalibration, meeting IEC 61000-6-2 immunity requirements. | Use Scenario: Smart meter voltage monitoring and anti-tampering detection circuits. IC Role / Device Role / Timing Role: Precision reference for metrology-grade sigma-delta ADCs measuring grid voltage harmonics. Use Value: 100 ppm/°C tempco and 0.08% thermal hysteresis ensure <±0.1% metering accuracy across seasonal ambient shifts. |
| Analog Input Module | Automotive Body Control |
Use Scenario: Industrial PLC analog input cards accepting ±10 V, 0–20 mA, or thermocouple inputs. IC Role / Device Role / Timing Role: Primary reference for programmable gain instrumentation amplifiers and multi-channel SAR ADCs. Use Value: Low 35 μVrms noise preserves ENOB in 16-bit acquisitions; SC70 footprint allows dense channel packing (≥32 ch/100 mm²). | Use Scenario: Cabin climate control sensor signal conditioning in AEC-Q100 Grade 3 systems. IC Role / Device Role / Timing Role: Reference for humidity/temperature sensor ADCs and HVAC actuator feedback loops. Use Value: Qualified to AEC-Q100 Grade 3 (−40°C to +85°C), enabling drop-in use in non-engine compartment automotive ECUs without derating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM4040CIM7-2.0/NOPB | ±0.5% (±10 mV) initial tolerance, same SC70-5 package and 2.048 V output | Same industrial temperature range and noise spec; lower grade tolerance suitable for cost-sensitive non-critical references | Select when ±0.5% accuracy suffices and tighter A-grade spec is unnecessary for system budget |
| REF3020AIDBZR | 2.048 V, ±0.2% (±4.1 mV) initial tolerance, SOT-23-3 package, 50 μVrms noise | Higher accuracy but higher noise and no NC pins; lacks EMI mitigation option on pin 3 | Choose for tighter initial accuracy where SC70-5 footprint isn't mandatory and EMI resilience is secondary |
Compared with LM4040DIM7-2.0/NOPB, LM4040CIM7-2.0/NOPB offers identical form-factor and thermal behavior at lower accuracy grade, while REF3020AIDBZR trades SC70-5's EMI-hardened pin 3 and lower noise for improved initial tolerance in a smaller 3-pin footprint - making each alternative optimal under distinct layout, accuracy, and noise constraints.
Availability
LM4040DIM7-2.0/NOPB is available at Aetrix Electronics and suitable for field transmitters, energy infrastructure monitoring, and analog input modules requiring stable component supply across industrial temperature ranges and long product lifecycles.
Supply support for LM4040DIM7-2.0/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 company specializing in analog, embedded processing, and digital signal technologies, with leadership in precision analog ICs and automotive-qualified components.
The LM4040-N series was designed for space-constrained, high-stability analog signal chains in industrial and automotive systems - emphasizing micropower operation, low noise, and robustness against capacitive loading and EMI.
FAQ
What is the exact output voltage and tolerance of LM4040DIM7-2.0/NOPB at 25°C?
The LM4040DIM7-2.0/NOPB has a nominal reverse breakdown voltage of 2.048 V with an initial tolerance of ±10 mV (±0.49%) at 25°C, corresponding to the 'C' grade specification per TI's LM4040-N datasheet section 5.6. This value is production-tested and applies specifically to the SC70-5 packaged LM4040DIM7-2.0/NOPB variant.
Does LM4040DIM7-2.0/NOPB require an external capacitor for stability?
No, LM4040DIM7-2.0/NOPB does not require an external output capacitor. Its internal design ensures stability with any capacitive load, including direct connection to ADC input capacitors or op-amp inputs - a key advantage confirmed in the TI datasheet Section 3 and Figure 8-1 typical application schematic.
What is the function of pin 3 on LM4040DIM7-2.0/NOPB?
Pin 3 on LM4040DIM7-2.0/NOPB is an EMI suppression terminal. Per TI datasheet Table 4-1 and Figure 4-3, it must be left floating or connected to pin 1 (anode); connecting it to ground or other nodes invalidates operation. It reduces sensitivity to high-frequency noise in environments near transformers or switching regulators.
What temperature range is LM4040DIM7-2.0/NOPB rated for?
LM4040DIM7-2.0/NOPB is rated for the industrial temperature range of −40°C to +85°C (Grade I), as specified in TI's LM4040-N datasheet Section 5.6 and Table 5-1. It is not qualified for extended −40°C to +125°C operation unless marked with '-Q1' or 'E' suffixes.
How does LM4040DIM7-2.0/NOPB compare to LM4040AIM7-2.0/NOPB?
LM4040DIM7-2.0/NOPB ('D' grade) has ±1% (±20 mV) initial tolerance, while LM4040AIM7-2.0/NOPB ('A' grade) offers ±0.1% (±2 mV). Both share identical SC70-5 packaging, 2.048 V output, noise (35 μVrms), and temperature coefficient (≤100 ppm/°C), differing only in initial accuracy and test screening - making the 'A' grade suitable for metrology-critical applications.
LM4040DIM7-2.0/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:
- ±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
LM4040DIM7-2.0/NOPB FAQ
1.How can I place an order for LM4040DIM7-2.0/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4040DIM7-2.0/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 LM4040DIM7-2.0/NOPB reliable?
The price and inventory of LM4040DIM7-2.0/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4040DIM7-2.0/NOPB is usually 5 days.
3.What payment methods are accepted for LM4040DIM7-2.0/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4040DIM7-2.0/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4040DIM7-2.0/NOPB?
LM4040DIM7-2.0/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4040DIM7-2.0/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 LM4040DIM7-2.0/NOPB?
For technical support, including LM4040DIM7-2.0/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4040DIM7-2.0/NOPB requirements.
6.How does Aetrix verify that LM4040DIM7-2.0/NOPB is sourced from the original manufacturer or authorized distributors?
All LM4040DIM7-2.0/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 LM4040DIM7-2.0/NOPB meets industry standards.
7.What is the process for return or replacement of LM4040DIM7-2.0/NOPB?
All LM4040DIM7-2.0/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM4040DIM7-2.0/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 LM4040DIM7-2.0/NOPB part is unused and in its original packaging.
Return procedure for LM4040DIM7-2.0/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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