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Texas Instruments LM4132AQ1MFT3.0
- Part No.:
- LM4132AQ1MFT3.0
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LM4132AQ1MFT3.0.pdf
- Description:
- IC VREF SERIES 0.05% SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,746
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Product details
Overview
LM4132AQ1MFT3.0 from Texas Instruments is an automotive-grade, precision low-dropout (LDO) voltage reference IC delivering a stable 3.0 V output with 0.05% initial accuracy, 10 ppm/°C temperature coefficient (0°C to 85°C), and 60 µA quiescent current - used in high-accuracy ADC/DAC biasing, battery-powered instrumentation, and automotive sensor signal conditioning.
For engineers reviewing the LM4132AQ1MFT3.0 datasheet, LM4132AQ1MFT3.0 pinout, LM4132AQ1MFT3.0 application, or LM4132AQ1MFT3.0 equivalent, key selection criteria include AEC-Q100 Grade 1 qualification (–40°C to +125°C), enable-controlled 3 µA shutdown mode, 20 mA output drive capability, dropout voltage as low as 175 mV at 10 mA, and stability with ceramic capacitors without requiring an output buffer.
Technical Context
The LM4132AQ1MFT3.0 implements a CMOS band-gap architecture with EEPROM-based curvature and tempco correction, enabling laser-trimmed reference performance in cost-effective plastic packaging. Its internal architecture eliminates need for external output capacitance while supporting up to 20 mA load current - distinguishing it from traditional shunt or buffered LDO references.
It features a dedicated EN pin with 35% VIN low threshold and 65% VIN high threshold, enabling precise power sequencing in automotive control units. The device operates across VIN = VREF + 400 mV to 5.5 V and maintains ±25 ppm/mA load regulation over –40°C to +125°C ambient range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 3.0 V nominal, with ±0.05% initial accuracy (A-grade) - ensures ≤1.5 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 sub-0.5 LSB drift over full automotive temperature range in 16-bit systems. |
| Quiescent Current | 60 µA typical, ≤100 µA max (–40°C to 125°C) - supports multi-year battery life in always-on vehicle sensors. |
| Shutdown Current | 3 µA typical, ≤7 µA max when EN = 0 V - allows ultra-low-power sleep modes in ADAS domain controllers. |
| Dropout Voltage | 175 mV at 10 mA load (25°C), ≤400 mV over full temp range - enables operation from single-cell LiFePO₄ (3.2 V min) or degraded 12 V rail. |
| Load Regulation | ±25 ppm/mA (0–20 mA), ≤120 ppm/mA over temperature - guarantees <0.5 mV output shift during dynamic sensor excitation. |
| Output Noise | 285 µVPP (0.1 Hz to 10 Hz) - meets noise floor requirements for precision weigh scales and medical front-ends. |
Pinout & Package
SOT-23 (DBV) 5-pin package, 2.90 mm × 1.60 mm body size, with exposed pad not electrically connected. Pin 1 is N/C (no connect); pins are arranged top-view counterclockwise from mark dot.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - N/C | No-connect terminal | Must remain floating; no PCB trace or thermal pad connection permitted. |
| 2 - GND | Analog ground reference | Primary return path for reference output and internal band-gap core; requires low-impedance connection to system AGND plane. |
| 3 - EN | Digital enable input | Active-high logic control: VIH ≥ 65% VIN, VIL ≤ 35% VIN - supports direct interface to 3.3 V or 5 V microcontroller GPIOs. |
| 4 - VIN | Input supply | Accepts 3.4 V to 5.5 V (VREF + 400 mV min); must be decoupled with ≥1 µF ceramic capacitor close to pin. |
| 5 - VREF | Precision output | 3.0 V regulated reference source; capable of sourcing 20 mA; stable without COUT but benefits from 1–10 nF local bypass. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for –40°C to +125°C ambient operation with HBM ESD Level 2 (±2 kV), enabling use in engine control, transmission, and body electronics. |
| EEPROM-trimmed curvature compensation | Corrects assembly-induced voltage shift in plastic SOT-23 package, achieving laser-trimmed accuracy without costly hermetic packaging. |
| Capacitor-free stability | Operates stably with only input capacitor (CIN); eliminates need for output buffer or COUT - reduces BOM count and board space in space-constrained modules. |
| 20 mA output drive | Directly powers ADC reference inputs, op-amp bias networks, or small DACs - avoids external buffer stages in sensor signal chains. |
| Low-noise 0.1–10 Hz band | 285 µVPP noise enables <18-bit effective resolution in precision weighing and strain-gauge applications. |
Applications
| Automotive Engine Control Unit (ECU) | Portable Precision Data Logger |
|---|---|
Use Scenario: Providing stable 3.0 V reference for crankshaft position sensor signal conditioning and knock detection ADCs under wide temperature and supply-voltage variation. IC Role / Device Role / Timing Role: Primary voltage reference for analog front-end (AFE) and 12–16 bit SAR ADCs in real-time combustion monitoring. Use Value: 10 ppm/°C tempco and AEC-Q100 qualification ensure ≤0.3 LSB error drift over –40°C to +125°C, meeting ISO 26262 ASIL-B functional safety margin. |
Use Scenario: Powering dual-channel 16-bit delta-sigma ADCs in battery-operated environmental monitoring nodes deployed for >5 years without maintenance. IC Role / Device Role / Timing Role: Low-drift, low-quiescent-current reference source enabling high-resolution thermistor and gas sensor measurements. Use Value: 60 µA IQ and 3 µA shutdown current extend CR2032 battery life to >7 years in periodic wake-up mode; 285 µVPP noise preserves dynamic range. |
| Industrial Process Controller I/O Module | Medical Patient Monitor Analog Front-End |
Use Scenario: Serving as master reference for 4–20 mA transmitter calibration and isolated analog output DACs in PLC backplanes. IC Role / Device Role / Timing Role: High-accuracy, low-drift reference for precision current-loop output stages and diagnostic self-test circuits. Use Value: ±0.05% initial accuracy and 50 ppm long-term stability (1000 hrs) reduce annual recalibration frequency by 60% versus standard band-gap references. |
Use Scenario: Biasing ECG amplifier instrumentation amplifiers and driving 24-bit medical-grade ADCs in portable patient monitors. IC Role / Device Role / Timing Role: Ultra-low-noise, low-drift reference for biopotential signal digitization with >110 dB SNR requirement. Use Value: 285 µVPP (0.1–10 Hz) and <75 ppm thermal hysteresis meet IEC 60601-2-27 ECG accuracy class I specifications. |
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, 0.02% initial accuracy, 3 ppm/°C tempco, 65 µA IQ, SO-8 package - higher precision but larger footprint and no enable pin. | Used in lab-grade test equipment where ultimate drift performance outweighs size and power constraints. | Select when <2 ppm/°C tempco and <0.02% accuracy are mandatory; avoid if SOT-23 space or EN control is required. |
| ADR3430ARJZ-R7 | 3.0 V, 0.1% initial accuracy, 10 ppm/°C tempco, 120 µA IQ, SOT-23-5 - same package and pinout, but lower grade and no AEC-Q100 qualification. | Targeted at industrial automation and non-automotive portable instruments with less stringent reliability requirements. | Choose for cost-sensitive industrial designs where AEC-Q100 is unnecessary and 0.1% accuracy suffices; verify EN compatibility. |
Compared with MAX6126AASA30+ and ADR3430ARJZ-R7, the LM4132AQ1MFT3.0 uniquely combines AEC-Q100 Grade 1 qualification, enable functionality, and SOT-23 footprint at 0.05% accuracy - making it optimal for automotive-qualified, space-constrained, and power-gated precision systems.
Availability
LM4132AQ1MFT3.0 is available at Aetrix Electronics and suitable for automotive ECU design, portable instrumentation, and industrial process control requiring stable component supply with guaranteed long-term availability and automotive-grade traceability.
Supply support for LM4132AQ1MFT3.0 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 electronics.
The LM4132 family was designed specifically for high-accuracy, low-power, and automotive-qualified voltage reference applications - bridging the performance gap between expensive laser-trimmed references and cost-effective CMOS solutions.
FAQ
What is the maximum load current supported by the LM4132AQ1MFT3.0?
The LM4132AQ1MFT3.0 delivers up to 20 mA of output current while maintaining specified accuracy and regulation. This capability allows it to directly drive ADC reference inputs, op-amp bias networks, and small DACs without external buffering - simplifying signal-chain design in automotive and portable instrumentation applications where the LM4132AQ1MFT3.0 serves as the primary precision reference source.
Does the LM4132AQ1MFT3.0 require an output capacitor for stability?
No, the LM4132AQ1MFT3.0 is internally compensated and stable without an output capacitor (COUT), unlike many LDO references that mandate minimum ESR or capacitance. A 1–10 nF ceramic capacitor may be added locally to further reduce high-frequency noise, but it is optional - a key advantage enabling minimal BOM count and compact layout in space-critical modules using the LM4132AQ1MFT3.0.
What does the 'Q1' suffix in LM4132AQ1MFT3.0 indicate?
The 'Q1' suffix denotes AEC-Q100 qualification for automotive applications, specifically Grade 1 (–40°C to +125°C ambient operating temperature) and HBM ESD Level 2 (±2 kV). This certification validates the LM4132AQ1MFT3.0 for use in engine control, body electronics, and ADAS subsystems where reliability under harsh thermal and electrical conditions is mandatory - distinguishing it from commercial-grade LM4132 variants.
How does the enable (EN) pin function on the LM4132AQ1MFT3.0?
The EN pin on the LM4132AQ1MFT3.0 is an active-high digital control input with VIH ≥ 65% VIN and VIL ≤ 35% VIN thresholds. When pulled high, the LM4132AQ1MFT3.0 regulates its 3.0 V output; when pulled low, it enters shutdown mode drawing only 3 µA. This feature enables precise power sequencing in microcontroller-based systems and extends battery life in always-on automotive sensors powered by the LM4132AQ1MFT3.0.
What is the dropout voltage specification for the LM4132AQ1MFT3.0?
The dropout voltage of the LM4132AQ1MFT3.0 is 175 mV at 10 mA load and 25°C, with a maximum of 400 mV across –40°C to +125°C. This low dropout enables operation from marginal supplies such as partially discharged LiFePO₄ batteries (≥3.2 V) or noisy 5 V rails in automotive domains - ensuring continuous, accurate reference delivery even when input voltage sags, a critical behavior for the LM4132AQ1MFT3.0 in safety-critical subsystems.
LM4132AQ1MFT3.0 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:
- ±0.05%
- 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
LM4132AQ1MFT3.0 FAQ
1.How can I place an order for LM4132AQ1MFT3.0 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4132AQ1MFT3.0 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 LM4132AQ1MFT3.0 reliable?
The price and inventory of LM4132AQ1MFT3.0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4132AQ1MFT3.0 is usually 5 days.
3.What payment methods are accepted for LM4132AQ1MFT3.0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4132AQ1MFT3.0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4132AQ1MFT3.0?
LM4132AQ1MFT3.0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4132AQ1MFT3.0 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 LM4132AQ1MFT3.0?
For technical support, including LM4132AQ1MFT3.0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4132AQ1MFT3.0 requirements.
6.How does Aetrix verify that LM4132AQ1MFT3.0 is sourced from the original manufacturer or authorized distributors?
All LM4132AQ1MFT3.0 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 LM4132AQ1MFT3.0 meets industry standards.
7.What is the process for return or replacement of LM4132AQ1MFT3.0?
All LM4132AQ1MFT3.0 units undergo pre-shipment inspection (PSI). If there is an issue with LM4132AQ1MFT3.0, 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 LM4132AQ1MFT3.0 part is unused and in its original packaging.
Return procedure for LM4132AQ1MFT3.0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM4132AQ1MFT3.0 Tags
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