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Texas Instruments LM4040BIM3X-4.1/NOPB
- Part No.:
- LM4040BIM3X-4.1/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
LM4040BIM3X-4.1/NOPB.pdf
- Description:
- IC VREF SHUNT 0.2% SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:6,822
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Product details
Overview
LM4040BIM3X-4.1/NOPB from Texas Instruments is a precision micropower shunt voltage reference in SOT-23 package, delivering a fixed 4.096 V reverse breakdown voltage with ±0.2% initial tolerance (Grade B) at 25°C, 68 μA minimum operating current, and 100 ppm/°C max temperature coefficient - used for high-accuracy ADC/DAC biasing and sensor excitation in industrial data acquisition systems.
For engineers reviewing the LM4040BIM3X-4.1/NOPB datasheet, LM4040BIM3X-4.1/NOPB pinout, LM4040BIM3X-4.1/NOPB application, or LM4040BIM3X-4.1/NOPB equivalent, key selection criteria include its AEC-Q100 Grade 3 qualification (−40°C to +85°C), no-output-capacitor operation, stable performance under capacitive loads, and low 35 μVRMS wideband noise (10 Hz–10 kHz).
Technical Context
The LM4040BIM3X-4.1/NOPB employs Zener-zap trimmed bandgap architecture with curvature-corrected temperature drift compensation, enabling stable 4.096 V output across −40°C to +85°C. Its low dynamic impedance (0.8 Ω typical at 1 mA) and wide 68 μA–15 mA operating current range support robust regulation in varying load conditions.
Unlike series references, this shunt device requires an external current-setting resistor and sinks current to maintain regulation; it tolerates floating or anode-connected NC pins and exhibits 0.08% thermal hysteresis after −40°C/125°C cycling - critical for repeatable calibration in field transmitters and analog input modules.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 4.096 V nominal reverse breakdown voltage - matches common 12-bit DAC/ADC full-scale reference points. |
| Initial Tolerance | ±0.2% at 25°C (Grade B) - enables <1 LSB error in 12-bit systems without trimming. |
| Temp Coefficient | ≤100 ppm/°C - ensures ≤±0.53 mV drift over −40°C to +85°C ambient. |
| Min Operating Current | 68 μA - allows ultra-low-power operation in battery-powered sensors and IoT nodes. |
| Wideband Noise | 35 μVRMS (10 Hz–10 kHz) - minimizes added noise in precision measurement front-ends. |
| Dynamic Impedance | 0.8 Ω typical at 1 mA - provides tight load regulation (<6 mV change over 1 mA load step). |
| Long-Term Stability | 120 ppm after 1000 hrs - supports reliable performance in unattended industrial monitoring. |
Pinout & Package
SOT-23 (DBZ) package: 3-pin surface-mount, 2.92 mm × 1.30 mm body size, JEDEC MO-178AA compliant. Thermal resistance RθJA = 291.9°C/W (board-mounted).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (Pin 1) | I/O | Main shunt current path and regulated output node - connects to system VREF net and current-setting resistor. |
| Anode (Pin 2) | O | Ground reference terminal - must be connected to system ground for proper regulation. |
| NC (Pin 3) | - | No-connect terminal - left floating or tied to anode per EMI mitigation guidance in noisy environments. |
Key Features
| Feature | Design Value |
|---|---|
| Zener-zap voltage trim | Ensures ±0.2% initial accuracy without post-package calibration - reduces test time and cost in high-volume production. |
| No output capacitor required | Eliminates external stabilization components - simplifies layout and improves reliability in space-constrained PCBs. |
| Capacitive load tolerance | Stable with any value of output capacitance - enables direct connection to ADC sample-and-hold inputs without ringing. |
| AEC-Q100 Grade 3 qualified | Rated for −40°C to +85°C operation - suitable for automotive cabin electronics and industrial control units. |
| Low 35 μVRMS noise | Preserves signal integrity in 16-bit+ data acquisition - avoids noise-induced quantization errors in precision sensing. |
Applications
| Field Transmitters | Data Acquisition |
|---|---|
Use Scenario: 4–20 mA loop-powered pressure/temperature transmitters in oil & gas refineries. IC Role / Device Role / Timing Role: Shunt reference providing stable 4.096 V excitation for bridge sensors and ADC reference for digitizing analog outputs. Use Value: Enables <±0.1% total error over temperature using only a single precision component - eliminates need for multi-point calibration. |
Use Scenario: Modular analog input cards in PLCs and SCADA systems with 16-bit SAR ADCs. IC Role / Device Role / Timing Role: Primary voltage reference for simultaneous sampling of multiple channels via multiplexed ADC front-end. Use Value: 35 μVRMS noise and 100 ppm/°C TC ensure ≤0.005% gain drift - meets IEC 61000-4-30 Class A accuracy requirements. |
| Analog Input Module | Energy Infrastructure |
Use Scenario: DIN-rail mounted signal conditioners converting thermocouple/mV signals to isolated 4–20 mA or digital outputs. IC Role / Device Role / Timing Role: Reference source for both sensor signal conditioning amplifiers and output DACs. Use Value: Dual-role capability reduces BOM count - same LM4040BIM3X-4.1/NOPB sets gain in instrumentation amps and defines DAC full scale. |
Use Scenario: Smart metering ICs and grid-edge power quality analyzers requiring metrology-grade voltage references. IC Role / Device Role / Timing Role: Precision reference for anti-aliasing filter biasing and RMS calculation engine calibration. Use Value: 120 ppm long-term stability supports 10-year metrological traceability without field recalibration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TL4050B41IDBZR | Same 4.096 V output and ±0.2% grade, but uses different Zener trimming; 40 μVRMS noise, 120 ppm/°C max TC. | Higher noise and looser TC limit - less suitable for 16-bit+ systems requiring sub-LSB stability. | Acceptable where cost sensitivity outweighs 0.5 LSB noise margin; verify layout grounding for noise coupling. |
| MAX6008BEUR+T | 4.096 V output, ±0.2% grade, but higher 60 μVRMS noise and 150 ppm/°C max TC; requires 75 μA min current. | Limited temp range (−40°C to +85°C same, but no AEC-Q100 qualification); higher power dissipation. | Use only in non-automotive industrial designs where TI's AEC-Q100 validation is not required. |
Compared with TL4050B41IDBZR and MAX6008BEUR+T, the LM4040BIM3X-4.1/NOPB delivers lower noise (35 vs. ≥40 μVRMS) and tighter temperature coefficient (100 vs. ≥120 ppm/°C), making it preferred for metrology-grade data acquisition where reference-induced error must stay below 0.005% of full scale.
Availability
LM4040BIM3X-4.1/NOPB is available at Aetrix Electronics and suitable for industrial data acquisition, field transmitter design, and energy infrastructure metering requiring stable component supply across extended product lifecycles.
Supply support for LM4040BIM3X-4.1/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 over 50 years of innovation in precision analog ICs.
The LM4040-N series was designed for space-constrained, high-accuracy applications including sensor signal chains, portable instrumentation, and automotive subsystems - emphasizing micropower operation, zero-external-component simplicity, and AEC-Q100 compliance.
FAQ
What is the operating temperature range for LM4040BIM3X-4.1/NOPB?
The LM4040BIM3X-4.1/NOPB is rated for −40°C to +85°C (Industrial Grade I), with full electrical specifications guaranteed across this range. It is also AEC-Q100 Grade 3 qualified, confirming suitability for automotive cabin electronics applications within the same temperature envelope. The device remains functional up to +125°C but with derated performance outside the specified range.
Does LM4040BIM3X-4.1/NOPB require an external output capacitor?
No, the LM4040BIM3X-4.1/NOPB does not require an external output capacitor for stability. Its internal design ensures unconditional stability even with large capacitive loads - a key advantage over many competing shunt references. This eliminates board space, cost, and reliability risks associated with external ceramic or tantalum capacitors.
What is the minimum cathode current needed for LM4040BIM3X-4.1/NOPB to regulate properly?
The LM4040BIM3X-4.1/NOPB requires a minimum cathode current of 68 μA at 25°C to maintain regulation at its nominal 4.096 V output. This value increases slightly over temperature - up to 70 μA at +85°C - and must be supplied via an external series resistor from a higher-voltage rail. Below this threshold, output voltage drops nonlinearly.
How does the NC pin (Pin 3) function on LM4040BIM3X-4.1/NOPB?
Pin 3 of the LM4040BIM3X-4.1/NOPB is a no-connect terminal. It may be left floating or connected to the anode (Pin 2) to reduce EMI susceptibility in high-noise environments such as near switching power supplies or motor drives. TI explicitly recommends this tie-down for applications exposed to significant high-frequency interference.
Is LM4040BIM3X-4.1/NOPB RoHS-compliant and lead-free?
Yes, LM4040BIM3X-4.1/NOPB is RoHS-compliant and lead-free, as indicated by the "/NOPB" suffix in the part number. It meets JEDEC J-STD-020 moisture sensitivity level 1 (MSL-1) and is compatible with standard Pb-free reflow soldering profiles. Full compliance documentation is available in TI's official product change notices.
LM4040BIM3X-4.1/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):
- 4.096V
- Voltage - Output (Max):
- -
- Current - Output:
- 15 mA
- Tolerance:
- ±0.2%
- Temperature Coefficient:
- 100ppm/°C
- Noise - 0.1Hz to 10Hz:
- -
- Noise - 10Hz to 10kHz:
- 80µVrms
- Voltage - Input:
- -
- Current - Supply:
- -
- Current - Cathode:
- 73 µA
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
LM4040BIM3X-4.1/NOPB FAQ
1.How can I place an order for LM4040BIM3X-4.1/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4040BIM3X-4.1/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 LM4040BIM3X-4.1/NOPB reliable?
The price and inventory of LM4040BIM3X-4.1/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4040BIM3X-4.1/NOPB is usually 5 days.
3.What payment methods are accepted for LM4040BIM3X-4.1/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4040BIM3X-4.1/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4040BIM3X-4.1/NOPB?
LM4040BIM3X-4.1/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4040BIM3X-4.1/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 LM4040BIM3X-4.1/NOPB?
For technical support, including LM4040BIM3X-4.1/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4040BIM3X-4.1/NOPB requirements.
6.How does Aetrix verify that LM4040BIM3X-4.1/NOPB is sourced from the original manufacturer or authorized distributors?
All LM4040BIM3X-4.1/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 LM4040BIM3X-4.1/NOPB meets industry standards.
7.What is the process for return or replacement of LM4040BIM3X-4.1/NOPB?
All LM4040BIM3X-4.1/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM4040BIM3X-4.1/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 LM4040BIM3X-4.1/NOPB part is unused and in its original packaging.
Return procedure for LM4040BIM3X-4.1/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM4040BIM3X-4.1/NOPB Tags
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