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Texas Instruments LM4132EMF-2.5/NOPB
- Part No.:
- LM4132EMF-2.5/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LM4132EMF-2.5/NOPB.pdf
- Description:
- IC VREF SERIES 0.5% SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:360
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Product details
Overview
LM4132EMF-2.5/NOPB from Texas Instruments is a precision low-dropout series voltage reference IC delivering a stable 2.5 V output with 0.05% initial accuracy (A-grade), 10 ppm/°C temperature coefficient (0°C to 85°C), and 60 µA quiescent current - used in high-resolution ADC/DAC biasing, portable instrumentation, and automotive sensor signal conditioning.
For engineers reviewing the LM4132EMF-2.5/NOPB datasheet, LM4132EMF-2.5/NOPB pinout, LM4132EMF-2.5/NOPB application, or LM4132EMF-2.5/NOPB equivalent, this page provides verified technical context, SOT-23 package details, enable-controlled shutdown operation, load regulation performance up to 20 mA, and validated alternative options for precision reference design.
Technical Context
The LM4132EMF-2.5/NOPB implements a CMOS band-gap architecture with EEPROM-based curvature and tempco correction, enabling laser-trimmed-level precision in cost-effective plastic packaging. It operates as a series reference with internal enable logic, supporting 3-µA shutdown mode via the EN pin.
It requires only an input capacitor (CIN) and tolerates low-ESR ceramic capacitors without needing an output buffer or COUT. Its 400 mV dropout voltage at 10 mA and VIN range of 2.9 V to 5.5 V make it suitable for single-cell Li-ion and regulated 3.3 V rail applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.5 V ±0.05% (A-grade, 25°C) - enables 16-bit+ ADC full-scale accuracy without trimming |
| Tempco | 10 ppm/°C (0°C to 85°C) - ensures ≤25 ppm total drift over industrial temperature range |
| Quiescent Current | 60 µA typical - supports >1-year battery life in always-on sensor nodes |
| Shutdown Current | 3 µA at EN = 0 V - allows ultra-low-power wake-on-event architectures |
| Load Regulation | 25 ppm/mA (0–20 mA) - maintains stability under dynamic DAC or op-amp bias loads |
| Dropout Voltage | 175 mV at 10 mA - enables operation from 2.675 V supply, compatible with 2.8 V LDOs |
| Output Noise | 240 µVPP (0.1–10 Hz) - suitable for 20-bit SAR and delta-sigma converter references |
Pinout & Package
SOT-23 (DBV) 5-pin package, 2.90 mm × 1.60 mm body size, surface-mount, lead-free and RoHS compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - N/C | No-connect | Must be left floating; no internal connection - avoids unintended parasitic coupling |
| 2 - GND | Ground reference | Primary return path for reference output and internal circuitry; requires low-impedance PCB plane |
| 3 - EN | Enable control input | Active-high logic: ≥65% VIN turns on; ≤35% VIN enters 3-µA shutdown - supports microcontroller GPIO control |
| 4 - VIN | Input supply | Accepts 2.9 V to 5.5 V; must be bypassed with ≥1 µF ceramic capacitor near pin |
| 5 - VREF | Precision output | 2.5 V reference source capable of sourcing/sinking ±20 mA; low-noise node requiring dedicated trace routing |
Key Features
| Feature | Design Value |
|---|---|
| EEPROM-trimmed curvature compensation | Eliminates assembly-induced tempco shift - achieves 10 ppm/°C without laser trimming |
| Enable pin with hysteresis | Prevents oscillation during slow-rising enable signals; VIH/VIL thresholds track VIN for rail-agnostic control |
| Stable with ceramic capacitors only | Removes need for tantalum or electrolytic output caps - reduces BOM count and board area |
| 20 mA output drive capability | Directly biases multiple op-amps or ADC references without external buffers |
| AEC-Q100 Grade 1 qualified | Validated for –40°C to +125°C ambient operation - suitable for engine control and ADAS modules |
Applications
| Portable Data Loggers | Automotive Cabin Sensors |
|---|---|
Use Scenario: Battery-powered environmental monitors logging temperature, humidity, and pressure with 16-bit resolution over 5-year field deployment. IC Role / Device Role / Timing Role: Primary voltage reference for successive-approximation ADC and analog front-end op-amps. Use Value: 60 µA quiescent current and 3 µA shutdown extend coin-cell life; 10 ppm/°C tempco ensures calibration validity across seasonal temperature swings. |
Use Scenario: Occupant detection system using capacitive sensing and thermistor arrays inside vehicle seats and dashboards. IC Role / Device Role / Timing Role: Stable 2.5 V reference for ratiometric sensor excitation and ADC conversion in AEC-Q100-compliant ECUs. Use Value: Grade 1 qualification and 20 mA drive support multi-sensor biasing without external regulators; low noise preserves SNR in millivolt-level signals. |
| Industrial PLC Analog Inputs | Medical Patient Monitoring |
Use Scenario: Modular I/O cards in programmable logic controllers acquiring 4–20 mA loop signals and thermocouple inputs with cold-junction compensation. IC Role / Device Role / Timing Role: Precision reference for sigma-delta ADCs and isolated signal conditioners in DIN-rail mounted modules. Use Value: 0.05% initial accuracy eliminates per-unit calibration; 400 mV dropout enables use with 3.3 V isolated DC-DC supplies. |
Use Scenario: Portable ECG and pulse oximetry devices requiring FDA-cleared signal integrity and long battery runtime between charges. IC Role / Device Role / Timing Role: Reference source for medical-grade ADCs and programmable gain instrumentation amplifiers in Class II devices. Use Value: 240 µVPP (0.1–10 Hz) noise meets IEC 60601-2-27 low-frequency interference limits; RoHS/NOPB compliance satisfies regulatory traceability requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REF3325AIDBVR | 2.5 V, 30 ppm/°C max, 3.9 µA IQ, SC70-3 package, no enable pin | Lacks shutdown control and has higher tempco; limited to ultra-low-power, space-constrained designs without enable sequencing | Choose when board area is critical and shutdown is handled externally; verify tempco impact on system accuracy budget |
| ADR3425ARJZ-R7 | 2.5 V, 10 ppm/°C max, 120 µA IQ, SOT-23-5, no enable pin | Higher quiescent current and no enable function; superior long-term stability (30 ppm/1000 hrs vs 50 ppm) | Prefer where power is not constrained but long-term drift is dominant concern; requires external enable circuit if needed |
Compared with REF3325AIDBVR and ADR3425ARJZ-R7, the LM4132EMF-2.5/NOPB uniquely combines A-grade 10 ppm/°C tempco, integrated enable, and 60 µA IQ in SOT-23-5 - making it optimal for battery-powered systems requiring both precision and active power management.
Availability
LM4132EMF-2.5/NOPB is available at Aetrix Electronics and suitable for portable instrumentation, automotive cabin sensors, and industrial PLC analog inputs requiring stable component supply with full traceability and long-lifecycle support.
Supply support for LM4132EMF-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 company specializing in analog and embedded processing technologies, with leadership in precision analog, power management, and signal chain solutions.
The LM4132 family was designed to deliver laser-trimmed reference performance using EEPROM-programmable CMOS band-gap architecture - targeting high-accuracy data acquisition, automotive sensing, and portable medical equipment.
FAQ
What is the maximum load current supported by the LM4132EMF-2.5/NOPB?
The LM4132EMF-2.5/NOPB delivers up to 20 mA of output current while maintaining specified accuracy and regulation. This capability allows direct driving of multiple op-amps, ADC references, or digital-to-analog converters without external buffering - simplifying layout and reducing component count in compact designs.
Does the LM4132EMF-2.5/NOPB require an output capacitor for stability?
No, the LM4132EMF-2.5/NOPB is internally compensated and stable with low-ESR ceramic capacitors on the input only. An output capacitor (COUT) is optional and not required for stability - unlike many older references, eliminating risk of oscillation due to capacitor ESR or aging effects.
What does the "/NOPB" suffix indicate in LM4132EMF-2.5/NOPB?
The "/NOPB" suffix in LM4132EMF-2.5/NOPB denotes lead-free, RoHS-compliant packaging with no lead (Pb) in the finish or die attach. It confirms compliance with EU Directive 2011/65/EU and TI's green packaging standards - essential for medical, automotive, and export-oriented electronics programs.
How does the enable pin (EN) function on the LM4132EMF-2.5/NOPB?
The EN pin on the LM4132EMF-2.5/NOPB is an active-high digital control input. When pulled to ≥65% of VIN, the device operates normally; when ≤35% of VIN, it enters 3 µA shutdown mode. Hysteresis prevents chatter during slow transitions, and the threshold scales with VIN for robust operation across varying supply rails.
Is the LM4132EMF-2.5/NOPB qualified for automotive applications?
Yes, the LM4132EMF-2.5/NOPB is AEC-Q100 Grade 1 qualified, rated for –40°C to +125°C ambient operation, and tested for HBM ESD up to ±2000 V. While the base LM4132 is not automotive-grade, this specific variant (LM4132EMF-2.5/NOPB) meets automotive reliability requirements for cabin and chassis applications outside powertrain.
LM4132EMF-2.5/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- SC-74A, SOT-753
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Reference Type:
- Series
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 2.5V
- Voltage - Output (Max):
- -
- Current - Output:
- 20 mA
- Tolerance:
- ±0.5%
- Temperature Coefficient:
- 30ppm/°C
- Noise - 0.1Hz to 10Hz:
- 240µVp-p
- Noise - 10Hz to 10kHz:
- -
- Voltage - Input:
- 2.9V ~ 5.5V
- Current - Supply:
- 100µA
- Current - Cathode:
- -
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
LM4132EMF-2.5/NOPB FAQ
1.How can I place an order for LM4132EMF-2.5/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4132EMF-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 LM4132EMF-2.5/NOPB reliable?
The price and inventory of LM4132EMF-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 LM4132EMF-2.5/NOPB is usually 5 days.
3.What payment methods are accepted for LM4132EMF-2.5/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4132EMF-2.5/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4132EMF-2.5/NOPB?
LM4132EMF-2.5/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4132EMF-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 LM4132EMF-2.5/NOPB?
For technical support, including LM4132EMF-2.5/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4132EMF-2.5/NOPB requirements.
6.How does Aetrix verify that LM4132EMF-2.5/NOPB is sourced from the original manufacturer or authorized distributors?
All LM4132EMF-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 LM4132EMF-2.5/NOPB meets industry standards.
7.What is the process for return or replacement of LM4132EMF-2.5/NOPB?
All LM4132EMF-2.5/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM4132EMF-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 LM4132EMF-2.5/NOPB part is unused and in its original packaging.
Return procedure for LM4132EMF-2.5/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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