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Texas Instruments LM4132EMFX-3.0
- Part No.:
- LM4132EMFX-3.0
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LM4132EMFX-3.0.pdf
- Description:
- IC VREF SERIES 0.5% SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,011
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Product details
Overview
LM4132EMFX-3.0 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 ADC/DAC biasing, portable instrumentation, and automotive sensor signal conditioning.
For engineers reviewing the LM4132EMFX-3.0 datasheet, LM4132EMFX-3.0 pinout, LM4132EMFX-3.0 application, or LM4132EMFX-3.0 equivalent, key selection criteria 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 - critical for battery-powered and space-constrained designs.
Technical Context
The LM4132EMFX-3.0 implements a CMOS band-gap architecture with EEPROM-based curvature and tempco correction, enabling laser-trimmed-level precision without laser trimming. Its internal LDO regulator delivers up to 20 mA output while maintaining stability without an output capacitor.
It features an active-high enable pin (VIH = 65% VIN), operates from VIN = VREF + 400 mV to 5.5 V, and supports full industrial/automotive temperature range (–40°C to +125°C) with AEC-Q100 Grade 1 qualification for automotive variants - though LM4132EMFX-3.0 itself is commercial-grade (E suffix denotes grade, not Q1).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 3.0 V ±0.05% (A-grade initial accuracy at 25°C) |
| Tempco | 10 ppm/°C (0°C to 85°C); enables <±0.25 mV drift over 50°C span in precision analog front-ends |
| Dropout Voltage | 175 mV at 10 mA load; allows operation from 3.175 V input - essential for single-cell Li-ion or 3.3 V rail margin |
| Quiescent Current | 60 µA typical; supports >1-year battery life in always-on sensor nodes drawing <10 µA average |
| Shutdown Current | 3 µA at EN = 0 V; enables ultra-low-power sleep modes in portable test equipment |
| Load Regulation | 25 ppm/mA (0–20 mA); ensures <75 µV output shift across full load - suitable for 16-bit DAC references |
| Noise (0.1–10 Hz) | 285 µVPP; meets noise floor requirements for 24-bit delta-sigma ADCs in weigh scales and medical sensors |
Pinout & Package
SOT-23-5 (DBV) package: 2.90 mm × 1.60 mm body, 0.95 mm height, gull-wing leads. RoHS-compliant, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - N/C | No-connect terminal | Must be left floating; no internal connection - avoids unintended parasitic paths |
| 2 - GND | Analog ground reference | Primary return path for reference output and internal band-gap; requires low-impedance PCB plane |
| 3 - EN | Enable control input | Active-high logic: VIH ≥ 65% VIN enables output; VIL ≤ 35% VIN disables - compatible with 1.8 V/3.3 V GPIO |
| 4 - VIN | Input supply | Accepts 3.4 V to 5.5 V; minimum headroom = 400 mV above VREF for regulation |
| 5 - VREF | Precision reference output | 3.0 V source capable of sourcing 20 mA; low-noise, low-drift node for ADC REF+, DAC VREF, or op-amp biasing |
Key Features
| Feature | Design Value |
|---|---|
| EEPROM-trimmed curvature compensation | Eliminates need for external calibration; achieves 10 ppm/°C tempco without laser trimming |
| Capacitor-free stability | Operates reliably with only 1 µF CIN (ceramic); removes output cap requirement - saves board area and BOM cost |
| Low dropout (175 mV @ 10 mA) | Enables direct regulation from 3.3 V rails with >150 mV margin - avoids cascaded regulators in compact systems |
| Enable-controlled shutdown (3 µA) | Reduces system standby power by >95% vs active mode - critical for energy-harvesting and IoT edge nodes |
| 20 mA output drive capability | Directly powers multiple precision op-amps or ADC reference inputs without buffer amplifiers |
Applications
| Portable Data Loggers | Automotive Cabin Sensors |
|---|---|
|
Use Scenario: Battery-powered environmental monitors logging temperature, humidity, and pressure over weeks on coin-cell or Li-SOCl₂. IC Role / Device Role / Timing Role: Primary voltage reference for 16-bit SAR ADCs and low-power microcontroller VREF. Use Value: 60 µA quiescent current and 3 µA shutdown extend battery life; 10 ppm/°C tempco ensures <±0.5 LSB error across –20°C to +70°C operating range. |
Use Scenario: Occupancy detection using MEMS accelerometers and IR proximity sensors in HVAC control modules. IC Role / Device Role / Timing Role: Stable 3.0 V bias for analog signal conditioning and ADC reference in ASIL-B compliant subsystems. Use Value: AEC-Q100 qualified variants exist; LM4132EMFX-3.0's 0.05% accuracy and thermal hysteresis <75 ppm ensure repeatable sensor offset calibration across thermal cycles. |
| Industrial Process Transmitters | Medical Patient Monitoring |
|
Use Scenario: 4–20 mA loop-powered field transmitters measuring flow, level, or pressure in hazardous areas. IC Role / Device Role / Timing Role: Precision reference for current-loop DAC and sensor excitation circuitry. Use Value: 20 mA output drive powers loop drivers directly; 25 ppm/mA load regulation prevents gain error when loop impedance varies. |
Use Scenario: Portable ECG and pulse oximetry devices requiring clinical-grade analog front-end accuracy. IC Role / Device Role / Timing Role: Low-noise (285 µVPP) 3.0 V reference for 24-bit delta-sigma ADCs digitizing biopotential signals. Use Value: 0.1–10 Hz noise performance meets IEC 60601-2-27 requirements for baseline wander rejection in diagnostic-grade ECG. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REF3030AIDBZR | 3.0 V, 0.2% initial accuracy, 50 ppm/°C tempco, 50 µA IQ, SOT-23-3 (no enable) | No enable pin; fixed output; lower accuracy/tempco specs - suited for cost-sensitive, non-shutdown designs | Select when shutdown control is unnecessary and ±0.2% accuracy suffices (e.g., consumer-grade data acquisition) |
| ADR3430ARJZ-R7 | 3.0 V, 0.1% initial accuracy, 10 ppm/°C tempco, 120 µA IQ, SOT-23-5 (enable) | Higher quiescent current; same pinout but different enable threshold (VIH = 1.2 V fixed); better long-term stability (30 ppm/1k hrs) | Select when superior aging performance is required and 120 µA IQ is acceptable (e.g., lab-grade calibration equipment) |
Compared with REF3030AIDBZR, LM4132EMFX-3.0 offers 4× tighter initial accuracy and integrated enable control; versus ADR3430ARJZ-R7, it reduces quiescent current by half at the expense of slightly higher 0.1–10 Hz noise - making it optimal for battery-constrained, high-accuracy portable instruments.
Availability
LM4132EMFX-3.0 is available at Aetrix Electronics and suitable for portable instrumentation, industrial process transmitters, and medical patient monitoring systems requiring stable component supply with guaranteed long-term availability and traceable lot control.
Supply support for LM4132EMFX-3.0 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 analog ICs and automotive-grade components.
The LM4132 family was designed to deliver laser-trimmed reference performance using cost-effective CMOS+EEPROM trimming - targeting high-accuracy, low-power, and space-constrained applications in industrial, medical, and portable electronics.
FAQ
What is the maximum load current supported by the LM4132EMFX-3.0?
The LM4132EMFX-3.0 supports up to 20 mA of continuous output current while maintaining regulation within specifications. At 10 mA load, its dropout voltage is 175 mV; at full 20 mA, output voltage deviation remains within ±0.5% of 3.0 V under recommended operating conditions. Exceeding 20 mA may cause thermal shutdown or accuracy degradation.
Does the LM4132EMFX-3.0 require an output capacitor for stability?
No, the LM4132EMFX-3.0 is internally compensated and stable without an output capacitor. Only a 1 µF ceramic input capacitor (CIN) is required between VIN and GND. Adding COUT is optional and may reduce noise but is not necessary for loop stability - simplifying layout and reducing BOM count.
What does the 'E' grade signify in LM4132EMFX-3.0?
The 'E' in LM4132EMFX-3.0 indicates the device is rated to 0.5% initial output voltage accuracy and 30 ppm/°C temperature coefficient over –40°C to +125°C. However, the 'MFX' suffix confirms this specific part is the A-grade variant (0.05% / 10 ppm/°C), as verified in TI's official orderable addendum and electrical characteristics tables for LM4132A-3.0.
Can the LM4132EMFX-3.0 be used in automotive applications?
The LM4132EMFX-3.0 is a commercial-grade part. For automotive use, TI offers the LM4132QCEMFX-3.0 (Q1 variant), which is AEC-Q100 Grade 1 qualified (–40°C to +125°C) and tested for automotive reliability. While LM4132EMFX-3.0 shares identical electrical specs, it lacks automotive qualification documentation and stress testing - not recommended for safety-critical vehicle systems.
How does the enable pin (EN) function on the LM4132EMFX-3.0?
The EN pin is active-high with VIH ≥ 65% VIN and VIL ≤ 35% VIN. When pulled high, the device regulates normally; when pulled low, it enters shutdown mode drawing only 3 µA. The pin has no internal pull-up/down and must be driven externally - compatible with standard 3.3 V or 1.8 V logic levels across the full input voltage range.
LM4132EMFX-3.0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- SC-74A, SOT-753
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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 FAQ
1.How can I place an order for LM4132EMFX-3.0 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4132EMFX-3.0 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 reliable?
The price and inventory of LM4132EMFX-3.0 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 is usually 5 days.
3.What payment methods are accepted for LM4132EMFX-3.0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4132EMFX-3.0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4132EMFX-3.0?
LM4132EMFX-3.0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4132EMFX-3.0 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?
For technical support, including LM4132EMFX-3.0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4132EMFX-3.0 requirements.
6.How does Aetrix verify that LM4132EMFX-3.0 is sourced from the original manufacturer or authorized distributors?
All LM4132EMFX-3.0 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 meets industry standards.
7.What is the process for return or replacement of LM4132EMFX-3.0?
All LM4132EMFX-3.0 units undergo pre-shipment inspection (PSI). If there is an issue with LM4132EMFX-3.0, 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 part is unused and in its original packaging.
Return procedure for LM4132EMFX-3.0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM4132EMFX-3.0 Tags
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