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Texas Instruments LM4132DQ1MFR3.0
- Part No.:
- LM4132DQ1MFR3.0
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LM4132DQ1MFR3.0.pdf
- Description:
- IC VREF SERIES 0.4% SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:4,407
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Product details
Overview
LM4132DQ1MFR3.0 from Texas Instruments is a precision low-dropout (LDO) voltage reference IC in SOT-23-5 package, delivering a stable 3.0 V output with ±0.4% initial accuracy and 20 ppm/°C temperature coefficient over –40°C to +125°C. It features an enable pin for 3 µA shutdown mode, supports up to 20 mA load current, and operates from VIN = VREF + 400 mV to 5.5 V - ideal for automotive sensor signal conditioning and battery-powered data acquisition systems.
For engineers reviewing the LM4132DQ1MFR3.0 datasheet, LM4132DQ1MFR3.0 pinout, LM4132DQ1MFR3.0 application, or LM4132DQ1MFR3.0 equivalent, key selection considerations include its AEC-Q100 Grade 1 qualification, dropout voltage of 175 mV at 10 mA, 60 µA quiescent current, stability with low-ESR ceramic capacitors, and compatibility with precision ADC/DAC biasing in harsh-temperature environments.
Technical Context
The LM4132DQ1MFR3.0 implements a CMOS band-gap architecture with EEPROM-based curvature and tempco correction, enabling laser-trimmed-level precision without laser trimming. Its internal circuitry includes a precision error amplifier, band-gap core, and enable-controlled pass transistor - all optimized for low-noise, high-stability operation across automotive temperature ranges.
This device functions as a series (not shunt) reference, eliminating idle current waste under no-load conditions. Its 400 mV maximum dropout and 25 ppm/mA load regulation support accurate biasing in low-voltage, high-precision analog front-ends where supply headroom is constrained and load transients must be tightly controlled.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 3.0 V nominal, ±0.4% initial accuracy (D-grade) - ensures ≤12 mV absolute error at 25°C for 12-bit+ system calibration. |
| Temperature Coefficient | 20 ppm/°C (–40°C to +125°C) - contributes ≤150 ppm (0.045 V) total drift over full range, critical for automotive ambient sensing. |
| Dropout Voltage | 175 mV at 10 mA load - enables operation from 3.175 V input, supporting single-cell LiFePO₄ or regulated 3.3 V rail use cases. |
| Quiescent Current | 60 µA typical - allows >10-year battery life in always-on monitoring nodes drawing <1 µA average current with periodic wake-up. |
| Enable Function | EN pin with 35% VIN low threshold - permits direct interface to 3.3 V GPIO without level-shifting; reduces supply current to 3 µA in shutdown. |
| Output Noise | 285 µVPP (0.1–10 Hz) - meets noise floor requirements for 16-bit SAR ADCs sampling at ≤100 kSPS in portable instrumentation. |
| Load Current Capability | 20 mA max - sufficient to drive ADC reference inputs, op-amp bias networks, and small DAC buffers without external buffering. |
Pinout & Package
SOT-23-5 (DBV) package, 2.90 mm × 1.60 mm body size, with exposed pad not electrically connected. Pin 1 is marked by dot; pin numbering follows standard SOT-23 top-view convention.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - N/C | No-connect terminal | Must remain unconnected and floating; no PCB trace or thermal pad connection permitted. |
| 2 - GND | Analog ground reference | Primary return path for reference output and internal band-gap; requires low-impedance connection to clean AGND plane. |
| 3 - EN | Enable control input | Active-high logic input; pulls internal pass transistor gate to enable output; 3 µA shutdown current when held ≤35% VIN. |
| 4 - VIN | Input supply | Accepts 3.4 V to 5.5 V; minimum VIN = VREF + 400 mV ensures regulation; decoupling capacitor required per layout guidelines. |
| 5 - VREF | Precision output | 3.0 V reference source; capable of sourcing up to 20 mA; requires 1 µF ceramic capacitor on COUT if used for dynamic loads. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for automotive ambient operation from –40°C to +125°C, enabling use in engine control modules and ADAS sensor interfaces. |
| EEPROM-trimmed tempco and curvature | Eliminates post-assembly calibration; achieves 20 ppm/°C performance without laser trimming, reducing manufacturing cost and test time. |
| Stable with low-ESR ceramics only | No tantalum or electrolytic capacitor required; supports compact, high-reliability layouts using 1 µF X7R 0603 ceramics on COUT. |
| 20 mA output drive capability | Directly powers ADC reference pins, op-amp bias networks, and small DACs - avoids need for external buffer amplifiers in space-constrained designs. |
| Low 60 µA quiescent current | Enables ultra-low-power operation in always-on subsystems; combined with EN pin, supports duty-cycled measurement architectures. |
Applications
| Automotive Engine Control Unit (ECU) | Portable Precision Data Logger |
|---|---|
Use Scenario: High-accuracy analog sensing of throttle position, coolant temperature, and oxygen sensor signals in ECU under wide ambient temperature swings. IC Role / Device Role / Timing Role: Provides stable 3.0 V reference for 12-bit ADCs digitizing sensor outputs; maintains accuracy during cold cranking (low VIN) and under-hood thermal cycling. Use Value: 20 ppm/°C tempco and 175 mV dropout ensure ≤0.045 V reference drift over –40°C to +125°C, preserving ADC LSB integrity without software compensation. |
Use Scenario: Battery-powered environmental monitor logging temperature, humidity, and pressure with 16-bit resolution over multi-year deployments. IC Role / Device Role / Timing Role: Supplies low-noise, low-drift reference to SAR ADC and precision op-amps; enabled only during sampling to minimize average current draw. Use Value: 285 µVPP 0.1–10 Hz noise and 3 µA shutdown current extend battery life while maintaining ≥15.5 ENOB at 100 kSPS sampling rates. |
| Industrial Process Controller I/O Module | Medical Patient Monitoring Front-End |
Use Scenario: Analog input module acquiring 4–20 mA loop signals and thermocouple outputs in factory automation PLCs with extended temperature operation. IC Role / Device Role / Timing Role: Reference source for isolated sigma-delta ADCs; supplies bias to instrumentation amplifiers and RTD excitation circuits. Use Value: ±0.4% initial accuracy and 50 ppm long-term stability (1000 hrs) reduce calibration frequency and improve field reliability over 10+ year product lifecycles. |
Use Scenario: ECG/EEG front-end requiring ultra-low-noise, high-stability reference for biopotential amplification and digitization in portable diagnostic devices. IC Role / Device Role / Timing Role: Low-noise 3.0 V reference for 16-bit delta-sigma ADCs and programmable gain amplifiers in analog signal chain. Use Value: 285 µVPP 0.1–10 Hz noise and 25 ppm/mA load regulation prevent baseline wander and maintain SNR > 95 dB during variable electrode impedance conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6126AASA30+ | 3.0 V, ±0.06% initial accuracy, 3 ppm/°C tempco, SO-8 package, 10 µA IQ, no enable pin | Higher precision and lower noise, but larger footprint and no shutdown mode; requires external enable circuitry for power gating | Select for lab-grade instrumentation where ultimate stability outweighs size and power constraints |
| ADR3430ARJZ-R7 | 3.0 V, ±0.1% initial accuracy, 10 ppm/°C tempco, SOT-23-5, 120 µA IQ, no enable pin | Lower grade accuracy and higher quiescent current; lacks automotive qualification and shutdown capability | Select for industrial non-automotive applications where AEC-Q100 compliance is unnecessary and board space is less constrained |
Compared with LM4132DQ1MFR3.0, MAX6126AASA30+ offers superior accuracy and tempco but sacrifices automotive qualification and power-gating flexibility, while ADR3430ARJZ-R7 provides SOT-23-5 compatibility at lower cost but lacks enable functionality and fails AEC-Q100 Grade 1 validation - making LM4132DQ1MFR3.0 the optimal balance of automotive robustness, precision, and low-power controllability.
Availability
LM4132DQ1MFR3.0 is available at Aetrix Electronics and suitable for automotive ECU design, portable data acquisition, and industrial process control applications requiring stable component supply with guaranteed long-term availability and automotive-grade traceability.
Supply support for LM4132DQ1MFR3.0 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, power management, and automotive electronics.
The LM4132 family was designed specifically for high-accuracy, low-drift voltage references in automotive and industrial systems where laser-trimmed performance is needed at CMOS cost - targeting applications demanding AEC-Q100 qualification, low dropout, and integrated enable control.
FAQ
What is the operating temperature range for LM4132DQ1MFR3.0?
The LM4132DQ1MFR3.0 is qualified per AEC-Q100 Grade 1, with a specified ambient operating temperature range of –40°C to +125°C. This rating is validated across all electrical parameters including output voltage accuracy, temperature coefficient, and dropout voltage - ensuring reliable performance in under-hood automotive environments and industrial control cabinets.
Does LM4132DQ1MFR3.0 require an output capacitor for stability?
The LM4132DQ1MFR3.0 is stable with or without an output capacitor, but a 1 µF low-ESR ceramic capacitor (COUT) is recommended when driving dynamic loads such as ADC reference inputs or op-amp bias networks. The device does not require COUT for basic DC regulation, unlike many older voltage references that mandate minimum capacitance.
What is the minimum input voltage required for LM4132DQ1MFR3.0 to regulate properly?
The LM4132DQ1MFR3.0 requires a minimum input voltage of VREF + 400 mV, i.e., 3.4 V, to maintain regulation at full 20 mA load. At 10 mA load, the dropout voltage is specified as 175 mV, meaning 3.175 V input sustains 3.0 V output within specification - critical for designs powered from marginally regulated 3.3 V rails.
How does the enable pin function on LM4132DQ1MFR3.0?
The EN pin on LM4132DQ1MFR3.0 is an active-high digital input. When pulled above 65% of VIN, the device enables and delivers 3.0 V output; when pulled below 35% of VIN, it enters shutdown mode with 3 µA supply current. No external pull-up or pull-down is required - the pin has no internal bias and must be driven actively.
Is LM4132DQ1MFR3.0 pin-compatible with other members of the LM4132 family?
Yes, all LM4132 variants - including LM4132DQ1MFR3.0, LM4132DQ1MFR2.5, and LM4132DQ1MFR3.3 - share identical SOT-23-5 (DBV) packaging and pinout (N/C, GND, EN, VIN, VREF). This allows drop-in replacement across voltage options in the same PCB footprint, simplifying design reuse and inventory management.
LM4132DQ1MFR3.0 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:
- ±0.4%
- 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:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
LM4132DQ1MFR3.0 FAQ
1.How can I place an order for LM4132DQ1MFR3.0 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4132DQ1MFR3.0 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 LM4132DQ1MFR3.0 reliable?
The price and inventory of LM4132DQ1MFR3.0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4132DQ1MFR3.0 is usually 5 days.
3.What payment methods are accepted for LM4132DQ1MFR3.0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4132DQ1MFR3.0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4132DQ1MFR3.0?
LM4132DQ1MFR3.0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4132DQ1MFR3.0 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 LM4132DQ1MFR3.0?
For technical support, including LM4132DQ1MFR3.0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4132DQ1MFR3.0 requirements.
6.How does Aetrix verify that LM4132DQ1MFR3.0 is sourced from the original manufacturer or authorized distributors?
All LM4132DQ1MFR3.0 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 LM4132DQ1MFR3.0 meets industry standards.
7.What is the process for return or replacement of LM4132DQ1MFR3.0?
All LM4132DQ1MFR3.0 units undergo pre-shipment inspection (PSI). If there is an issue with LM4132DQ1MFR3.0, 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 LM4132DQ1MFR3.0 part is unused and in its original packaging.
Return procedure for LM4132DQ1MFR3.0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM4132DQ1MFR3.0 Tags
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TL431AIDBZR
Texas Instruments
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TL431BQDBZR
Texas Instruments
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AN431AN-ATRG1
Diodes Incorporated
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LM4040CYM3-2.5-TR
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LM4040CYM3-4.1-TR
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LM4040EIM3-2.5/NOPB
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AZ431LBNTR-G1
Diodes Incorporated
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LM4040D20IDBZR
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LM4041DIM3-ADJ/NOPB
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LM4040DIM3X-2.5/NOPB
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LM4040DIM3-2.5/NOPB
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AZ431LANTR-G1
Diodes Incorporated
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