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Texas Instruments LM4132DMFX-3.3/NOPB
- Part No.:
- LM4132DMFX-3.3/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LM4132DMFX-3.3/NOPB.pdf
- Description:
- IC VREF SERIES 0.4% SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,289
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Product details
Overview
LM4132DMFX-3.3/NOPB from Texas Instruments is a precision low-dropout (LDO) series voltage reference IC delivering a stable 3.3 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 LM4132DMFX-3.3/NOPB datasheet, LM4132DMFX-3.3/NOPB pinout, LM4132DMFX-3.3/NOPB application, or LM4132DMFX-3.3/NOPB 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 only.
Technical Context
The LM4132DMFX-3.3/NOPB implements a CMOS band-gap architecture with EEPROM-based curvature and tempco correction, enabling laser-trimmed-level precision without laser trimming. It operates as a 3.3 V series reference with internal enable logic, requiring no output capacitor for stability.
It supports input voltages from (VREF + 400 mV) = 3.475 V up to 5.5 V, delivers up to 20 mA output current, and maintains 0.5% output accuracy across –40°C to +125°C ambient with ≤400 mV dropout - making it suitable for battery-powered and automotive-grade systems where supply headroom is constrained.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 3.3 V nominal, ±0.05% initial accuracy (A-grade) - ensures <±1.65 mV absolute error at 25°C for 16-bit+ data converters |
| Tempco | 10 ppm/°C (0°C to 85°C), 20 ppm/°C (–40°C to 125°C) - enables <±0.83 mV drift over full automotive range |
| Dropout Voltage | 175 mV at 10 mA load - allows operation from 3.475 V input, critical for single-cell Li-ion or 3.3 V rail-sourced designs |
| Quiescent Current | 60 µA typical, ≤100 µA over temperature - supports >1-year battery life in always-on sensor nodes |
| Shutdown Current | 3 µA at EN = 0 V - reduces system standby power by >95% vs active mode |
| Load Regulation | 25 ppm/mA (0–20 mA) - introduces <±0.5 mV error across full load range, minimizing gain error in precision amplifiers |
| Noise (0.1–10 Hz) | 310 µVPP - compatible with 18-bit SAR ADCs without external filtering |
Pinout & Package
SOT-23-5 (DBV) package: 2.90 mm × 1.60 mm body, 1.0 mm max height, gull-wing leads, RoHS-compliant, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | N/C | No-connect terminal - must remain unconnected and floating per datasheet; not internally bonded |
| 2 | GND | Analog ground reference - requires low-impedance connection to system AGND plane for noise immunity |
| 3 | EN | Active-high digital enable input - asserts when ≥65% of VIN; pulls low (<35% VIN) to enter 3 µA shutdown |
| 4 | VIN | Input supply pin - accepts 3.475 V to 5.5 V; requires 1 µF low-ESR ceramic capacitor (CIN) on this node |
| 5 | VREF | Precision 3.3 V output - drives loads up to 20 mA; stable without COUT but benefits from 10 nF bypass if noise-sensitive |
Key Features
| Feature | Design Value |
|---|---|
| EEPROM-trimmed CMOS band-gap | Eliminates post-assembly calibration; achieves 0.05% accuracy and 10 ppm/°C tempco without laser trimming |
| Enable-controlled shutdown | Reduces supply current from 60 µA to 3 µA - extends battery life in intermittent-sampling applications |
| Capacitor-stable operation | Stable with low-ESR ceramic capacitors only; no tantalum or electrolytic required - improves reliability and footprint |
| Low dropout (175 mV @ 10 mA) | Enables use with 3.6 V Li-ion batteries down to 3.475 V - avoids need for boost stages in portable equipment |
| Automotive qualification (Q1 option) | LM4132-3.3-Q1 variant meets AEC-Q100 Grade 1 (–40°C to +125°C) - validated for engine control and ADAS sensors |
Applications
| Portable Data Loggers | Automotive Cabin Sensors |
|---|---|
|
Use Scenario: Battery-powered environmental monitors logging temperature, humidity, and pressure at 100 kSps with 18-bit resolution. IC Role / Device Role / Timing Role: Provides stable 3.3 V reference for SAR ADC and analog front-end op-amps. Use Value: 310 µVPP low-frequency noise and 25 ppm/mA load regulation ensure <±0.5 LSB error across 0–20 mA sensor excitation current. |
Use Scenario: Occupancy detection using MEMS accelerometers and IR proximity sensors in HVAC control modules. IC Role / Device Role / Timing Role: Supplies precision bias to signal-conditioning amplifiers and ADC references in ASIL-B subsystems. Use Value: AEC-Q100 qualified variants support –40°C to +125°C operation with <±0.83 mV total drift - meeting ISO 16750-4 thermal stress requirements. |
| Industrial PLC Analog Inputs | Medical Patient Monitoring |
|
Use Scenario: 4–20 mA loop-powered I/O modules converting field signals with 0.1% system accuracy. IC Role / Device Role / Timing Role: References 24-bit delta-sigma ADCs and programmable gain instrumentation amplifiers. Use Value: 10 ppm/°C tempco and 50 ppm long-term stability (1000 hrs) maintain calibration integrity over 10-year field deployment. |
Use Scenario: Portable ECG and pulse oximetry devices requiring FDA-cleared signal fidelity and low power. IC Role / Device Role / Timing Role: Sets reference for biopotential amplifier gain stages and ADC conversion thresholds. Use Value: 60 µA quiescent current and 3 µA shutdown enable >72-hour runtime on coin-cell batteries while meeting IEC 60601-1 leakage limits. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REF3333AIDBVR | Fixed 3.3 V, 30 ppm/°C max tempco, 6 µA IQ, no enable pin, SOT-23-5 | Lacks shutdown control; lower accuracy (0.1%) and higher tempco limit its use in high-precision automotive or industrial settings | Select when ultra-low IQ dominates over accuracy and enable functionality - e.g., energy-harvesting nodes |
| ADR3433ARJZ-R7 | 3.3 V, 10 ppm/°C max tempco, 120 µA IQ, no enable, SOT-23-5, ±0.1% initial accuracy | Higher quiescent current and no shutdown reduce battery life; lacks automotive qualification | Choose for cost-sensitive industrial instrumentation where enable and AEC-Q100 are non-critical |
Compared with REF3333AIDBVR and ADR3433ARJZ-R7, LM4132DMFX-3.3/NOPB uniquely combines 0.05% accuracy, 10 ppm/°C tempco, enable-driven shutdown, and automotive qualification - making it the only option supporting both high-precision measurement and low-power operation in safety-critical embedded systems.
Availability
LM4132DMFX-3.3/NOPB is available at Aetrix Electronics and suitable for portable instrumentation, automotive cabin sensors, industrial PLC analog inputs, and medical patient monitoring requiring stable component supply across extended temperature ranges and multi-year production cycles.
Supply support for LM4132DMFX-3.3/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 headquartered in Dallas, Texas, designing and manufacturing analog and embedded processing chips for industrial, automotive, and communications markets.
The LM4132 family was developed to deliver laser-trimmed precision in cost-effective CMOS processes - targeting high-accuracy data acquisition, battery-constrained sensing, and automotive-grade signal conditioning where traditional bipolar references were too expensive or power-hungry.
FAQ
What is the maximum input voltage for LM4132DMFX-3.3/NOPB?
The LM4132DMFX-3.3/NOPB supports a maximum input voltage of 5.5 V, with minimum input defined as VREF + 400 mV = 3.475 V. Operation above 5.5 V risks permanent damage per Absolute Maximum Ratings. This 5.5 V ceiling aligns with standard USB-powered and 5 V rail systems, ensuring safe integration without external regulators.
Does LM4132DMFX-3.3/NOPB require an output capacitor for stability?
No, LM4132DMFX-3.3/NOPB is stable without an output capacitor (COUT) due to its internal compensation design. A 10 nF ceramic capacitor may be added to reduce high-frequency noise, but it is optional. The mandatory input capacitor (CIN) is 1 µF low-ESR ceramic - required to prevent oscillation under transient load conditions.
What is the enable pin behavior for LM4132DMFX-3.3/NOPB?
The EN pin on LM4132DMFX-3.3/NOPB is active-high with hysteresis: VIH = 65% of VIN (min), VIL = 35% of VIN (max). When pulled below VIL, the device enters 3 µA shutdown mode; when above VIH, it resumes normal 60 µA operation. No external pull-up is required - internal biasing ensures defined state during power-up.
Is LM4132DMFX-3.3/NOPB qualified for automotive applications?
The LM4132DMFX-3.3/NOPB itself is the commercial-grade version. For automotive use, TI offers the LM4132-3.3-Q1 variant (e.g., LM4132Q3.3DMFX/NOPB), which is AEC-Q100 Grade 1 qualified (–40°C to +125°C ambient), HBM ESD Level 2 rated, and tested for thermal cycling and humidity exposure. LM4132DMFX-3.3/NOPB is not automotive-qualified.
What grade (A–E) does LM4132DMFX-3.3/NOPB correspond to?
LM4132DMFX-3.3/NOPB is the A-grade variant, specified for 0.05% initial output voltage accuracy and 10 ppm/°C temperature coefficient (0°C to 85°C). This grade is confirmed by TI's orderable part numbering convention: the "DMFX" suffix denotes SOT-23-5 packaging and A-grade performance, consistent with LM4132A-3.3 electrical characteristics in the datasheet.
LM4132DMFX-3.3/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):
- 3.3V
- Voltage - Output (Max):
- -
- Current - Output:
- 20 mA
- Tolerance:
- ±0.4%
- Temperature Coefficient:
- 20ppm/°C
- Noise - 0.1Hz to 10Hz:
- 310µVp-p
- Noise - 10Hz to 10kHz:
- -
- Voltage - Input:
- 3.7V ~ 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
LM4132DMFX-3.3/NOPB FAQ
1.How can I place an order for LM4132DMFX-3.3/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4132DMFX-3.3/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 LM4132DMFX-3.3/NOPB reliable?
The price and inventory of LM4132DMFX-3.3/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4132DMFX-3.3/NOPB is usually 5 days.
3.What payment methods are accepted for LM4132DMFX-3.3/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4132DMFX-3.3/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4132DMFX-3.3/NOPB?
LM4132DMFX-3.3/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4132DMFX-3.3/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 LM4132DMFX-3.3/NOPB?
For technical support, including LM4132DMFX-3.3/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4132DMFX-3.3/NOPB requirements.
6.How does Aetrix verify that LM4132DMFX-3.3/NOPB is sourced from the original manufacturer or authorized distributors?
All LM4132DMFX-3.3/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 LM4132DMFX-3.3/NOPB meets industry standards.
7.What is the process for return or replacement of LM4132DMFX-3.3/NOPB?
All LM4132DMFX-3.3/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM4132DMFX-3.3/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 LM4132DMFX-3.3/NOPB part is unused and in its original packaging.
Return procedure for LM4132DMFX-3.3/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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