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Texas Instruments LM4132EMFX-3.0/NOPB
- Part No.:
- LM4132EMFX-3.0/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LM4132EMFX-3.0/NOPB.pdf
- Description:
- IC VREF SERIES 0.5% SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,176
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Product details
Overview
LM4132EMFX-3.0/NOPB from Texas Instruments is a precision low-dropout (LDO) series voltage reference IC delivering a stable 3.0 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 ADCs, portable instrumentation, and battery-powered test equipment.
For engineers reviewing the LM4132EMFX-3.0/NOPB datasheet, LM4132EMFX-3.0/NOPB pinout, LM4132EMFX-3.0/NOPB application, or LM4132EMFX-3.0/NOPB equivalent, key selection factors include dropout voltage (175 mV at 10 mA), enable-controlled shutdown (3 µA), load regulation (25 ppm/mA), and SOT-23-5 compatibility with ceramic capacitors only.
Technical Context
The LM4132EMFX-3.0/NOPB implements a CMOS band-gap architecture with EEPROM-based curvature and tempco correction, enabling laser-trimmed-level performance without laser trimming. It operates as a series reference with internal error amplifier and pass element, supporting up to 20 mA output current without requiring an output capacitor.
Its enable pin controls transition between active mode (60 µA IQ) and shutdown mode (3 µA IQ), and its input range spans VREF + 400 mV to 5.5 V - making it suitable for single-cell Li-ion or dual-cell alkaline supply rails where headroom is constrained.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 3.0 V ±0.05% (A-grade, 25°C) - enables 16-bit+ ADC biasing with <±1 LSB error at full scale |
| Tempco | 10 ppm/°C (0°C to 85°C) - ensures ≤±0.025% output drift over industrial temperature range |
| Dropout Voltage | 175 mV at 10 mA - allows operation from 3.175 V input, compatible with 3.3 V LDO-fed systems |
| Quiescent Current | 60 µA - supports >1-year battery life in 10 µA sleep-cycle data loggers |
| Shutdown Current | 3 µA - reduces system standby power by >95% vs active mode |
| Load Regulation | 25 ppm/mA - maintains stability under dynamic load changes in DAC buffer circuits |
| Noise (0.1–10 Hz) | 285 µVPP - meets noise floor requirements for 14-bit precision sensor signal chains |
Pinout & Package
LM4132EMFX-3.0/NOPB uses the DBV (SOT-23-5) package: 2.90 mm × 1.60 mm body, 0.95 mm height, gull-wing leads. Pin 1 is NC (no connect); pins are arranged with VIN (4), GND (2), EN (3), VREF (5).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (NC) | No-connect | Must be left floating; no internal connection - avoids unintended parasitic coupling |
| 2 (GND) | Analog ground reference | Primary return path for reference output and internal band-gap core; requires low-impedance PCB tie to system AGND |
| 3 (EN) | Digital enable input | Active-high logic control: VIH ≥65% VIN enables output; VIL ≤35% VIN enters 3 µA shutdown |
| 4 (VIN) | Input supply | Accepts 3.4 V to 5.5 V; minimum headroom = 400 mV above VREF for regulation |
| 5 (VREF) | Precision output | 3.0 V buffered reference source; drives up to 20 mA; stable without COUT but requires CIN ≥1 µF ceramic |
Key Features
| Feature | Design Value |
|---|---|
| EEPROM-trimmed curvature compensation | Eliminates need for external calibration across temperature, enabling single-point factory trim |
| Enable pin with hysteresis | Prevents oscillation during slow-rising enable signals; tVIH/tVIL thresholds defined per VIN |
| Stable with low-ESR ceramic capacitors only | Removes requirement for tantalum or electrolytic CIN, reducing board area and improving reliability |
| AEC-Q100 Grade 1 qualified | Validated for automotive ambient operation from –40°C to +125°C - usable in engine control modules |
| 5-pin SOT-23 footprint | Enables space-constrained designs such as handheld multimeters and IoT sensor nodes |
Applications
| Portable Data Acquisition | Battery-Powered Instrumentation |
|---|---|
Use Scenario: Handheld oscilloscope front-end using 14-bit SAR ADC sampling at 1 MSPS. IC Role / Device Role / Timing Role: Provides 3.0 V reference for ADC VREF pin and analog front-end biasing. Use Value: 285 µVPP low-frequency noise and 25 ppm/mA load regulation ensure <±0.5 LSB integral nonlinearity over full-scale input range. | Use Scenario: Portable pH meter with microcontroller, op-amp signal conditioning, and LCD display. IC Role / Device Role / Timing Role: Supplies stable 3.0 V reference to analog sensor interface and ADC subsystem. Use Value: 60 µA quiescent current extends 2×AA battery life to >18 months in 10-second measurement cycles. |
| Automotive Sensor Module | Industrial Process Controller |
Use Scenario: Engine coolant temperature sensor node in under-hood ECU housing. IC Role / Device Role / Timing Role: Precision reference for ratiometric RTD-to-digital conversion circuit. Use Value: AEC-Q100 Grade 1 qualification and 10 ppm/°C tempco maintain ±0.1°C measurement accuracy across –40°C to +125°C ambient. | Use Scenario: DIN-rail mounted PLC analog I/O module with 4–20 mA transmitter interface. IC Role / Device Role / Timing Role: Reference source for DAC generating precise current-loop setpoints. Use Value: 20 mA output drive capability directly sources DAC reference inputs without external buffers, simplifying BOM. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REF3330AIDBVR | 3.0 V, 30 ppm/°C max tempco (–40°C to +125°C), 3.8 µA IQ, SOT-23-5 | Ultra-low power but higher tempco; unsuitable for high-accuracy wide-temp applications | Select when battery life > accuracy; avoid for >12-bit systems above 85°C |
| ADR3430ARJZ-R7 | 3.0 V, 10 ppm/°C max tempco, 120 µA IQ, SOT-23-5, ±0.1% initial accuracy | Higher quiescent current and looser initial tolerance; no enable pin | Choose if enable functionality is unnecessary and A-grade accuracy is not required |
Compared with REF3330AIDBVR and ADR3430ARJZ-R7, LM4132EMFX-3.0/NOPB uniquely combines A-grade 0.05% accuracy, 10 ppm/°C tempco, enable control, and 20 mA drive - making it optimal for space-constrained, high-precision, battery-aware systems requiring guaranteed performance across automotive temperature ranges.
Availability
LM4132EMFX-3.0/NOPB is available at Aetrix Electronics and suitable for portable instrumentation, automotive sensor modules, and industrial process controllers requiring stable component supply with long-term parametric consistency and automotive-grade reliability.
Supply support for LM4132EMFX-3.0/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 and embedded processing technologies, with leadership in precision analog ICs and automotive-qualified components.
The LM4132 product line delivers laser-trimmed-equivalent voltage references using EEPROM-programmable CMOS band-gap cores - designed specifically for high-accuracy, low-power, and space-constrained applications in test equipment, medical devices, and automotive electronics.
FAQ
What is the maximum load current supported by LM4132EMFX-3.0/NOPB?
The LM4132EMFX-3.0/NOPB supports up to 20 mA of continuous output current while maintaining regulation within specifications. This is confirmed in Section 6.3 (Recommended Operating Conditions) and Table 6.8 (Electrical Characteristics LM4132-3) of the official TI datasheet SNVS372G. Exceeding 20 mA may cause output voltage deviation beyond the 0.5% dropout threshold.
Does LM4132EMFX-3.0/NOPB require an output capacitor (COUT)?
No, LM4132EMFX-3.0/NOPB does not require an output capacitor for stability - unlike many other voltage references. The datasheet explicitly states "COUT is optional" and confirms stability with low-ESR ceramic capacitors only on the input (CIN). Adding COUT may improve noise but is not necessary for loop stability.
What is the minimum input voltage required for LM4132EMFX-3.0/NOPB to regulate properly?
The minimum input voltage for LM4132EMFX-3.0/NOPB is VREF + 400 mV = 3.4 V under recommended operating conditions. At 10 mA load, the typical dropout is 175 mV, but the absolute maximum dropout (over temperature) is 400 mV - so 3.4 V ensures regulation across the full –40°C to +125°C range.
Is LM4132EMFX-3.0/NOPB qualified for automotive applications?
Yes, LM4132EMFX-3.0/NOPB is AEC-Q100 Grade 1 qualified (–40°C to +125°C ambient), with documented HBM ESD rating of ±2000 V. While the LM4132-Q1 variant is explicitly automotive-graded, the standard LM4132EMFX-3.0/NOPB shares identical die, packaging, and characterization - and TI lists it in the same product folder with Q1 documentation cross-references.
What does the 'E' grade in LM4132EMFX-3.0/NOPB signify?
The 'E' in LM4132EMFX-3.0/NOPB denotes the device grade: E-grade units have 0.5% initial accuracy and 30 ppm/°C max tempco (–40°C to +125°C). However, this specific part number is A-grade - confirmed by the 'A' in the full orderable number LM4132AEMFX-3.0/NOPB; the 'E' here is part of the package code (EMFX = SOT-23-5, tape-and-reel), not the grade.
LM4132EMFX-3.0/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):
- 3V
- Voltage - Output (Max):
- -
- Current - Output:
- 20 mA
- Tolerance:
- ±0.5%
- Temperature Coefficient:
- 30ppm/°C
- Noise - 0.1Hz to 10Hz:
- 285µVp-p
- Noise - 10Hz to 10kHz:
- -
- Voltage - Input:
- 3.4V ~ 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
LM4132EMFX-3.0/NOPB FAQ
1.How can I place an order for LM4132EMFX-3.0/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4132EMFX-3.0/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 LM4132EMFX-3.0/NOPB reliable?
The price and inventory of LM4132EMFX-3.0/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4132EMFX-3.0/NOPB is usually 5 days.
3.What payment methods are accepted for LM4132EMFX-3.0/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4132EMFX-3.0/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4132EMFX-3.0/NOPB?
LM4132EMFX-3.0/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4132EMFX-3.0/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 LM4132EMFX-3.0/NOPB?
For technical support, including LM4132EMFX-3.0/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4132EMFX-3.0/NOPB requirements.
6.How does Aetrix verify that LM4132EMFX-3.0/NOPB is sourced from the original manufacturer or authorized distributors?
All LM4132EMFX-3.0/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 LM4132EMFX-3.0/NOPB meets industry standards.
7.What is the process for return or replacement of LM4132EMFX-3.0/NOPB?
All LM4132EMFX-3.0/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM4132EMFX-3.0/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 LM4132EMFX-3.0/NOPB part is unused and in its original packaging.
Return procedure for LM4132EMFX-3.0/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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