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Texas Instruments LM4132BMFX-3.0
- Part No.:
- LM4132BMFX-3.0
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LM4132BMFX-3.0.pdf
- Description:
- IC VREF SERIES 0.1% SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,711
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Product details
Overview
LM4132BMFX-3.0 from Texas Instruments is a precision low-dropout series voltage reference IC delivering a stable 3.0 V output with 0.1% initial accuracy, 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 LM4132BMFX-3.0 datasheet, LM4132BMFX-3.0 pinout, LM4132BMFX-3.0 application, or LM4132BMFX-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 package compatibility with space-constrained PCB layouts.
Technical Context
The LM4132BMFX-3.0 implements a CMOS band-gap architecture with EEPROM-based curvature and tempco correction, enabling laser-trimmed-level precision without costly bipolar processes. It operates as a series reference with internal error amplifier, pass transistor, and enable-controlled bias network.
Unlike shunt references, it draws only 60 µA under load and supports up to 20 mA output while maintaining 0.5% output accuracy down to a 175 mV input–output differential - making it suitable for battery-powered systems where supply headroom and quiescent power are critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 3.0 V ±0.1% (B-grade initial accuracy at 25°C) |
| Tempco | 10 ppm/°C (0°C to 85°C); ensures ≤240 ppm drift over industrial range |
| Dropout Voltage | 175 mV at 10 mA load - enables operation from 3.175 V supply in low-voltage systems |
| Quiescent Current | 60 µA - minimizes standby power in always-on sensor nodes |
| Shutdown Current | 3 µA when EN = 0 V - extends battery life during idle cycles |
| Load Regulation | 25 ppm/mA - maintains stability across 0–20 mA load variation |
| Line Regulation | 70 ppm/V - rejects input ripple in noisy DC-DC outputs |
Pinout & Package
SOT-23-5 (DBV) package: 2.90 mm × 1.60 mm body, surface-mount, lead-free, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | N/C | No-connect pin; must remain floating - no internal connection or function |
| 2 | GND | Analog ground reference; requires low-impedance PCB connection to minimize noise coupling |
| 3 | EN | Active-high enable input; asserts reference when ≥65% of VIN, disables at ≤35% of VIN |
| 4 | VIN | Input supply rail; accepts 3.4 V to 5.5 V (VREF + 400 mV min) |
| 5 | VREF | Stable 3.0 V output; capable of sourcing 20 mA with <0.5% deviation |
Key Features
| Feature | Design Value |
|---|---|
| EEPROM-trimmed curvature compensation | Eliminates need for external trimming components and improves tempco consistency across plastic-package assembly shifts |
| Enable-controlled shutdown | Reduces system power by >95% versus active mode - critical for duty-cycled data loggers |
| Capacitor-stable operation | Works with low-ESR ceramic capacitors (no tantalum or electrolytic required), simplifying BOM and layout |
| Automotive qualification | AEC-Q100 Grade 1 (–40°C to +125°C ambient) - validated for engine control and ADAS sensor modules |
| No output capacitor required | Enables direct connection to ADC reference inputs without stability risk - reduces component count and board area |
Applications
| Portable Data Acquisition | Automotive Sensor Signal Conditioning |
|---|---|
Use Scenario: Battery-powered handheld multimeter acquiring 16-bit ADC samples with <±0.01% total unadjusted error. IC Role / Device Role / Timing Role: Provides primary reference voltage for SAR ADC and analog front-end gain stages. Use Value: 0.1% initial accuracy and 10 ppm/°C tempco ensure measurement repeatability across temperature swings without recalibration. |
Use Scenario: Pressure sensor module in exhaust gas recirculation (EGR) system operating at 125°C ambient. IC Role / Device Role / Timing Role: Supplies stable bias to op-amp signal chain and ADC reference input. Use Value: AEC-Q100 Grade 1 rating and 20 ppm/°C max tempco over –40°C to +125°C guarantee accuracy in under-hood environments. |
| Industrial PLC Analog Input Module | Medical Patient Monitor Front-End |
Use Scenario: 8-channel 24-bit sigma-delta ADC module in programmable logic controller with isolated 4–20 mA loop interfaces. IC Role / Device Role / Timing Role: Precision reference for ADC and DAC calibration circuitry. Use Value: 25 ppm/mA load regulation and 70 ppm/V line regulation maintain reference integrity despite varying channel loading and supply ripple. |
Use Scenario: ECG front-end with 20-bit ADC requiring sub-µV noise floor and long-term stability for diagnostic-grade waveform fidelity. IC Role / Device Role / Timing Role: Low-noise 3.0 V reference for ADC and PGA bias networks. Use Value: 285 µVPP (0.1–10 Hz) output noise and 50 ppm long-term drift over 1000 hrs support clinical-grade signal integrity. |
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 | Fixed 3.0 V, 0.1% initial accuracy, 50 ppm/°C tempco, 50 µA IQ, SOT-23-3, no enable pin | Lacks shutdown control and has higher tempco - unsuitable for battery-cycled or wide-temp automotive use | Select when board space is constrained and enable functionality is unnecessary |
| ADR3430ARJZ-R7 | 3.0 V, 0.1% accuracy, 10 ppm/°C tempco, 65 µA IQ, SOT-23-5, no enable pin | Same tempco and accuracy but no enable - requires external FET for shutdown, increasing complexity | Choose if TI ecosystem compatibility is not required and external enable control is acceptable |
Compared with REF3030AIDBZR and ADR3430ARJZ-R7, the LM4132BMFX-3.0 uniquely integrates enable control in an SOT-23-5 package with matching 0.1% accuracy and 10 ppm/°C tempco - eliminating external switching components while preserving thermal performance in compact, power-sensitive designs.
Availability
LM4132BMFX-3.0 is available at Aetrix Electronics and suitable for portable instrumentation, automotive sensor modules, and industrial PLC analog input circuits requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for LM4132BMFX-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 company specializing in analog and embedded processing technologies, with leadership in precision analog ICs and automotive-grade components.
The LM4132 family was designed for high-accuracy, low-power voltage referencing in space- and energy-constrained systems - targeting instrumentation, automotive sensors, and portable medical devices where traditional laser-trimmed references were cost-prohibitive.
FAQ
What is the maximum load current supported by the LM4132BMFX-3.0?
The LM4132BMFX-3.0 delivers up to 20 mA while maintaining output voltage accuracy within 0.5% of nominal 3.0 V. This capability eliminates the need for external buffer amplifiers in most 12–16-bit data acquisition systems, directly driving ADC reference inputs and op-amp bias networks without degradation.
Does the LM4132BMFX-3.0 require an output capacitor for stability?
No, the LM4132BMFX-3.0 is internally compensated and stable with or without an output capacitor. It operates reliably with low-ESR ceramic capacitors if added for noise filtering, but no minimum COUT is mandated - simplifying design and reducing BOM count compared to many competing references.
What is the input voltage range for the LM4132BMFX-3.0?
The LM4132BMFX-3.0 operates with VIN from (VREF + 400 mV) = 3.4 V minimum up to 5.5 V maximum. At 10 mA load, the dropout is specified at 175 mV, allowing reliable operation from 3.175 V supplies - ideal for single-cell Li-ion or regulated 3.3 V rail applications.
How does the enable pin function on the LM4132BMFX-3.0?
The EN pin on the LM4132BMFX-3.0 is active-high: reference output activates when EN ≥65% of VIN and shuts down when EN ≤35% of VIN. In shutdown, supply current drops to 3 µA, enabling precise power gating in microcontroller-managed sensor subsystems without external switches.
Is the LM4132BMFX-3.0 qualified for automotive applications?
Yes - the LM4132BMFX-3.0 is AEC-Q100 Grade 1 qualified (–40°C to +125°C ambient), with HBM ESD rating of ±2000 V. It meets automotive reliability requirements for engine control, body electronics, and ADAS sensor modules where precision voltage referencing must survive harsh thermal and electrical environments.
LM4132BMFX-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:
- ±0.1%
- Temperature Coefficient:
- 20ppm/°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
LM4132BMFX-3.0 FAQ
1.How can I place an order for LM4132BMFX-3.0 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4132BMFX-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 LM4132BMFX-3.0 reliable?
The price and inventory of LM4132BMFX-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 LM4132BMFX-3.0 is usually 5 days.
3.What payment methods are accepted for LM4132BMFX-3.0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4132BMFX-3.0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4132BMFX-3.0?
LM4132BMFX-3.0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4132BMFX-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 LM4132BMFX-3.0?
For technical support, including LM4132BMFX-3.0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4132BMFX-3.0 requirements.
6.How does Aetrix verify that LM4132BMFX-3.0 is sourced from the original manufacturer or authorized distributors?
All LM4132BMFX-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 LM4132BMFX-3.0 meets industry standards.
7.What is the process for return or replacement of LM4132BMFX-3.0?
All LM4132BMFX-3.0 units undergo pre-shipment inspection (PSI). If there is an issue with LM4132BMFX-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 LM4132BMFX-3.0 part is unused and in its original packaging.
Return procedure for LM4132BMFX-3.0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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