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Texas Instruments LM4132EMF-3.3/NOPB
- Part No.:
- LM4132EMF-3.3/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LM4132EMF-3.3/NOPB.pdf
- Description:
- IC VREF SERIES 0.5% SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:3,798
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Product details
Overview
LM4132EMF-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 battery-powered test equipment.
For engineers reviewing the LM4132EMF-3.3/NOPB datasheet, LM4132EMF-3.3/NOPB pinout, LM4132EMF-3.3/NOPB application, or LM4132EMF-3.3/NOPB equivalent, this page provides verified electrical specs, SOT-23-5 package details, enable-controlled shutdown functionality, thermal hysteresis (75 ppm), and validated alternatives for precision analog signal chains.
Technical Context
The LM4132EMF-3.3/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 3.3 V series reference with internal enable logic and no requirement for an output capacitor.
Its LDO architecture supports input voltages from (VREF + 400 mV) = 3.7 V up to 5.5 V, delivers up to 20 mA load current, and achieves 175 mV dropout at 10 mA - making it suitable for space-constrained, low-power systems where supply headroom is limited.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 3.3 V ±0.05% (A-grade), enabling direct interface with 3.3 V ADCs and DACs without gain calibration |
| Tempco | 10 ppm/°C (0°C to 85°C), ensuring ≤±0.825 mV drift over industrial temperature range |
| Quiescent Current | 60 µA typical, supporting >1-year battery life in 10 µA-systems with intermittent operation |
| Dropout Voltage | 175 mV at 10 mA load, allowing operation from single-cell Li-ion (3.7 V min) or regulated 3.7 V rails |
| Enable Function | EN pin reduces supply current to 3 µA in shutdown, enabling power-gating in multi-rail sensor nodes |
| Output Noise | 310 µVPP (0.1–10 Hz), suitable for 16-bit+ data acquisition without external filtering |
| Long-Term Stability | 50 ppm over 1000 hours, reducing recalibration frequency in field-deployed instrumentation |
Pinout & Package
SOT-23-5 (DBV) package: 2.90 mm × 1.60 mm body, 0.95 mm height, gull-wing leads, RoHS-compliant, tape-and-reel packaging.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - N/C | No-connect terminal | Must remain unconnected; floating per datasheet - no PCB trace or pad required |
| 2 - GND | Analog ground reference | Low-impedance return path for reference output; requires dedicated ground plane connection |
| 3 - EN | Digital enable input | Active-high logic: VIH ≥65% VIN enables output; VIL ≤35% VIN enters 3 µA shutdown |
| 4 - VIN | Input supply rail | Accepts 3.7 V to 5.5 V; minimum headroom defined by dropout spec (175 mV @ 10 mA) |
| 5 - VREF | Precision output terminal | 3.3 V reference source; stable into capacitive loads; no output capacitor required |
Key Features
| Feature | Design Value |
|---|---|
| EEPROM-trimmed curvature compensation | Eliminates need for external trim components and enables post-package calibration to achieve 0.05% accuracy |
| Enable-controlled shutdown | Reduces system standby power by >95% vs active mode - critical for energy-harvesting and IoT edge nodes |
| Capacitor-free stability | Operates reliably with no COUT required, simplifying layout and reducing BOM count in space-limited designs |
| Low thermal hysteresis | 75 ppm max change after –40°C ↔ 125°C cycling - ensures repeatability in thermally cycled environments |
| Automotive-grade option available | LM4132-3.3-Q1 variant qualified to AEC-Q100 Grade 1 (–40°C to +125°C ambient) |
Applications
| Portable Data Loggers | Industrial PLC Analog Inputs |
|---|---|
Use Scenario: Battery-powered environmental sensor node sampling temperature, humidity, and pressure at 100 SPS using a 16-bit SAR ADC. IC Role / Device Role / Timing Role: Provides stable 3.3 V reference for ADC VREF pin and microcontroller AVDD rail conditioning. Use Value: 10 ppm/°C tempco and 310 µVPP noise ensure <0.01% measurement error across –20°C to 60°C operating range without recalibration. |
Use Scenario: Modular I/O card in a DIN-rail mounted PLC acquiring 4–20 mA loop signals via precision op-amp front-end. IC Role / Device Role / Timing Role: Supplies reference voltage to 24-bit delta-sigma ADC and programmable gain amplifier calibration circuitry. Use Value: 0.05% initial accuracy and 50 ppm long-term stability reduce factory calibration labor and extend maintenance intervals. |
| Medical Patient Monitors | Automotive Battery Management Systems |
Use Scenario: ECG front-end module digitizing biopotential signals with ultra-low noise and DC accuracy requirements. IC Role / Device Role / Timing Role: Reference source for instrumentation amplifier gain-setting and ADC full-scale definition. Use Value: 175 mV dropout allows direct use of 3.7 V Li-ion battery output, eliminating extra LDO stage and associated noise/area overhead. |
Use Scenario: Cell voltage monitoring IC in 12S Li-ion pack requiring accurate 3.3 V reference for ADC and supervisor circuits. IC Role / Device Role / Timing Role: Precision voltage reference for analog front-end and fault-detection comparators. Use Value: AEC-Q100-qualified LM4132-3.3-Q1 variant supports automotive qualification; 3 µA shutdown enables sleep-mode current budget compliance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REF3333AIDBVR | 3.3 V, 30 ppm/°C max tempco (–40°C to +125°C), 3.8 µA quiescent current, no enable pin | Lacks enable control; lower IQ but higher tempco limits use in wide-temperature industrial sensors | Select when ultra-low power dominates over tempco; verify line/load regulation meets system LSB error budget |
| ADR3433ARJZ-R7 | 3.3 V, 10 ppm/°C max tempco, 120 µA IQ, no enable, ±0.1% initial accuracy (B-grade) | Higher quiescent current and looser initial accuracy; requires external enable circuitry for shutdown | Choose when footprint compatibility with SOT-23-5 is needed but enable function is implemented externally |
Compared with LM4132EMF-3.3/NOPB, REF3333AIDBVR offers lower IQ but sacrifices tempco and enable functionality, while ADR3433ARJZ-R7 matches tempco but lacks integrated enable and has higher IQ - making LM4132EMF-3.3/NOPB optimal for compact, enable-controlled, wide-temp precision references.
Availability
LM4132EMF-3.3/NOPB is available at Aetrix Electronics and suitable for portable instrumentation, industrial data acquisition, and medical sensor modules requiring stable component supply with guaranteed long-term availability and TI-authorized traceability.
Supply support for LM4132EMF-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 leader specializing in analog and embedded processing technologies, with decades of expertise in precision reference design and high-volume manufacturing reliability.
The LM4132 family was engineered to deliver laser-trimmed bipolar reference performance using cost-effective, EEPROM-programmable CMOS processes - targeting high-accuracy data conversion, test equipment, and automotive sensing applications.
FAQ
What is the maximum load current supported by the LM4132EMF-3.3/NOPB?
The LM4132EMF-3.3/NOPB delivers up to 20 mA of output current while maintaining specified accuracy and regulation. 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. The device sustains this current across its full operating temperature range (–40°C to +125°C) and input voltage range (3.7 V to 5.5 V).
Does the LM4132EMF-3.3/NOPB require an output capacitor for stability?
No, the LM4132EMF-3.3/NOPB is internally compensated and remains stable without an output capacitor - a key differentiator from many competing references. This simplifies PCB layout, reduces BOM cost, and avoids potential phase-margin degradation caused by capacitor ESR/ESL. A bypass capacitor on VIN (CIN) is mandatory, but COUT is strictly optional and not required for stability.
How does the enable pin (EN) function on the LM4132EMF-3.3/NOPB?
The EN pin on the LM4132EMF-3.3/NOPB is an active-high digital control input. When pulled to ≥65% of VIN, the device operates normally with 60 µA supply current. When pulled to ≤35% of VIN, it enters shutdown mode drawing only 3 µA. This feature enables precise power sequencing and ultra-low-power sleep states in battery-operated systems without external MOSFET switches.
What is the dropout voltage specification for the LM4132EMF-3.3/NOPB?
The LM4132EMF-3.3/NOPB has a typical dropout voltage of 175 mV at 10 mA load and 25°C, with a maximum of 400 mV across –40°C to +125°C. This means the device regulates properly with VIN as low as 3.475 V (3.3 V + 175 mV) under nominal conditions - enabling direct operation from single-cell Li-ion batteries or low-headroom LDO outputs.
Is the LM4132EMF-3.3/NOPB suitable for automotive applications?
The LM4132EMF-3.3/NOPB itself is not AEC-Q100 qualified; however, the pin-compatible LM4132-3.3-Q1 variant is certified for automotive Grade 1 (–40°C to +125°C ambient) and shares identical electrical specifications except for tighter production screening and enhanced ESD robustness. For automotive BMS or ADAS sensor modules, LM4132-3.3-Q1 is the designated qualified alternative.
LM4132EMF-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:
- ±0.5%
- Temperature Coefficient:
- 30ppm/°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
LM4132EMF-3.3/NOPB FAQ
1.How can I place an order for LM4132EMF-3.3/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4132EMF-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 LM4132EMF-3.3/NOPB reliable?
The price and inventory of LM4132EMF-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 LM4132EMF-3.3/NOPB is usually 5 days.
3.What payment methods are accepted for LM4132EMF-3.3/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4132EMF-3.3/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4132EMF-3.3/NOPB?
LM4132EMF-3.3/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4132EMF-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 LM4132EMF-3.3/NOPB?
For technical support, including LM4132EMF-3.3/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4132EMF-3.3/NOPB requirements.
6.How does Aetrix verify that LM4132EMF-3.3/NOPB is sourced from the original manufacturer or authorized distributors?
All LM4132EMF-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 LM4132EMF-3.3/NOPB meets industry standards.
7.What is the process for return or replacement of LM4132EMF-3.3/NOPB?
All LM4132EMF-3.3/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM4132EMF-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 LM4132EMF-3.3/NOPB part is unused and in its original packaging.
Return procedure for LM4132EMF-3.3/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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