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Texas Instruments LM4132AQ1MFT2.5
- Part No.:
- LM4132AQ1MFT2.5
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LM4132AQ1MFT2.5.pdf
- Description:
- IC VREF SERIES 0.05% SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,497
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Product details
Overview
LM4132AQ1MFT2.5 from Texas Instruments is an automotive-grade precision low-dropout voltage reference IC delivering a stable 2.5 V output with ±0.05% initial accuracy, 10 ppm/°C temperature coefficient (0°C to 85°C), and 60 µA quiescent current. 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 battery-powered instrumentation and automotive sensor signal conditioning.
For engineers reviewing the LM4132AQ1MFT2.5 datasheet, LM4132AQ1MFT2.5 pinout, LM4132AQ1MFT2.5 application, or LM4132AQ1MFT2.5 equivalent, key selection criteria include AEC-Q100 Grade 1 qualification (–40°C to +125°C), SOT-23-5 package compatibility, dropout voltage ≤400 mV at 10 mA, line regulation of 50 ppm/V, and stability with low-ESR ceramic capacitors without requiring an output buffer.
Technical Context
The LM4132AQ1MFT2.5 uses EEPROM-trimmed CMOS band-gap architecture to achieve laser-trimmed bipolar-level precision in cost-effective packaging. Its curvature, tempco, and accuracy are corrected at package level to overcome assembly-induced shifts - a key differentiator versus conventional trimmed references.
This device functions as a series-connected, three-terminal voltage reference with active enable control. It delivers regulated 2.5 V output referenced to GND, accepts input from VIN ≥2.9 V, and enters ultra-low-power shutdown when EN is pulled low - enabling precise power sequencing in automotive ADAS and data acquisition subsystems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.5 V ±0.05% (±1.25 mV) at 25°C - enables 16-bit ADC biasing with <0.001 LSB error contribution |
| Tempco | 10 ppm/°C (0°C to 85°C), 20 ppm/°C (–40°C to 125°C) - ensures ≤±0.05% output drift over full automotive range |
| Dropout Voltage | 175 mV (typ.) at 10 mA load - allows operation from 2.675 V supply, critical for low-voltage battery systems |
| Quiescent Current | 60 µA (typ.), 100 µA (max) - supports >10-year battery life in always-on automotive monitoring circuits |
| Shutdown Current | 3 µA (typ.) when EN = 0 V - reduces standby power by >95% vs active mode |
| Load Regulation | 25 ppm/mA (0–20 mA) - maintains output stability under dynamic sensor loading |
| Noise (0.1–10 Hz) | 240 µVPP - suitable for high-resolution 24-bit sigma-delta ADC reference inputs |
Pinout & Package
SOT-23-5 (DBV) package, 2.90 mm × 1.60 mm body size, with exposed pad not electrically connected. Pin 1 is NC (no connect); pins are arranged left-to-right, top-view: Pin 1 (NC), Pin 2 (GND), Pin 3 (EN), Pin 4 (VIN), Pin 5 (VREF).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (NC) | No-connect terminal | Must remain floating; no internal connection - avoids unintended parasitic coupling |
| Pin 2 (GND) | Analog ground reference | Primary return path for reference output and internal bias; requires low-impedance PCB plane |
| Pin 3 (EN) | Digital enable input | Active-high logic: VIH ≥65% VIN, VIL ≤35% VIN - enables seamless integration with MCU GPIOs |
| Pin 4 (VIN) | Input supply rail | Accepts 2.9 V to 5.5 V; must be bypassed with ≥1 µF ceramic capacitor to suppress PSRR degradation |
| Pin 5 (VREF) | Precision output terminal | Delivers 2.5 V reference; stable with 0.1 µF–10 µF ceramic COUT - no buffer required |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for –40°C to +125°C ambient operation - meets automotive powertrain and chassis module requirements |
| EEPROM-based curvature correction | Compensates for die-package thermal stress shift - eliminates post-assembly re-trimming and improves yield |
| Low-ESR capacitor stability | Operates stably with 0.1 µF ceramic output capacitor - reduces BOM count and board space vs buffered references |
| 20 mA output drive capability | Directly drives ADC reference inputs, DAC buffers, and op-amp bias networks - eliminates external follower stages |
| 400 mV max dropout at 10 mA | Enables use with single-cell LiFePO₄ (2.8–3.6 V) or dual-cell alkaline supplies - extends battery runtime |
Applications
| Automotive Engine Control Unit (ECU) | Portable Precision Data Logger |
|---|---|
Use Scenario: High-accuracy analog front-end for oxygen sensor and knock sensor signal conditioning in engine management systems. IC Role / Device Role / Timing Role: Provides stable 2.5 V reference for 16-bit SAR ADCs sampling sensor outputs under wide temperature and supply variation. Use Value: Enables <±0.1% total measurement error across –40°C to +125°C, meeting ISO 26262 ASIL-B functional safety requirements. |
Use Scenario: Battery-powered environmental monitoring unit logging temperature, humidity, and gas concentration with 24-bit resolution. IC Role / Device Role / Timing Role: Supplies ultra-low-noise 2.5 V reference to sigma-delta ADC and precision op-amp gain stages. Use Value: Delivers 240 µVPP (0.1–10 Hz) noise floor and 10 ppm/°C stability - preserves effective resolution >21 bits over operating range. |
| Industrial Process Controller | Medical Patient Monitor Analog Subsystem |
Use Scenario: 4–20 mA loop-powered transmitter for pressure and flow transducers in hazardous-area plants. IC Role / Device Role / Timing Role: Generates accurate 2.5 V reference for DAC-based current loop driver and sensor excitation circuitry. Use Value: Maintains ±0.05% initial accuracy and 50 ppm/V line regulation - ensures loop accuracy remains within 0.1% FSR despite supply ripple. |
Use Scenario: ECG and EEG front-end amplifier chain requiring calibrated DC offsets and gain stability. IC Role / Device Role / Timing Role: Supplies reference voltage for programmable-gain instrumentation amplifiers and anti-aliasing filter biasing. Use Value: Achieves <75 ppm thermal hysteresis and 50 ppm long-term stability - prevents baseline drift during multi-hour clinical sessions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6126AASA25+ | 2.5 V, ±0.02% initial accuracy, 3 ppm/°C tempco, 65 µA IQ, SOT-23-6 - higher precision but larger footprint and no enable pin | Used in metrology-grade lab equipment where ultra-low drift dominates over size/power | Select when sub-10 ppm total error budget demands tighter tempco and accuracy - accept added cost and layout complexity |
| ADR3425ARJZ-R7 | 2.5 V, ±0.1% initial accuracy, 10 ppm/°C tempco, 120 µA IQ, SOT-23-5 - same package, no enable, higher quiescent current | Deployed in industrial PLC I/O modules where AEC-Q100 qualification is unnecessary | Choose for non-automotive cost-sensitive designs needing SOT-23-5 compatibility without shutdown control |
Compared with MAX6126AASA25+ and ADR3425ARJZ-R7, the LM4132AQ1MFT2.5 uniquely combines AEC-Q100 Grade 1 qualification, integrated enable functionality, and 3 µA shutdown current in the compact SOT-23-5 package - making it optimal for space-constrained, battery-aware automotive and portable medical systems.
Availability
LM4132AQ1MFT2.5 is available at Aetrix Electronics and suitable for automotive ECU design, portable instrumentation, and industrial process control applications requiring stable component supply, long-term lifecycle support, and AEC-Q100 compliance.
Supply support for LM4132AQ1MFT2.5 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 analog ICs and automotive-qualified components.
The LM4132 family was designed specifically to deliver laser-trimmed reference performance using cost-effective CMOS EEPROM trimming - targeting high-reliability automotive, industrial, and portable test equipment where accuracy, temperature stability, and low power are critical.
FAQ
What is the maximum input voltage for the LM4132AQ1MFT2.5?
The LM4132AQ1MFT2.5 supports a maximum input voltage of 5.5 V across its specified operating temperature range. This limit is defined in the Absolute Maximum Ratings table and applies regardless of load or enable state. Exceeding 5.5 V risks permanent damage. For reliable operation, VIN should be maintained between VREF + 400 mV (2.9 V) and 5.5 V, with proper decoupling capacitance on the VIN pin.
Does the LM4132AQ1MFT2.5 require an output capacitor for stability?
No, the LM4132AQ1MFT2.5 is stable with no output capacitor and also supports optional ceramic COUT values from 0.1 µF to 10 µF. Unlike many references, it does not require a minimum ESR or specific capacitor type for phase margin - eliminating the need for tantalum or electrolytic capacitors. This simplifies layout and improves reliability in automotive environments where capacitor aging is a concern.
What is the enable pin logic threshold for the LM4132AQ1MFT2.5?
The LM4132AQ1MFT2.5 enable pin uses ratio-metric thresholds: VIH (minimum high level) is 65% of VIN, and VIL (maximum low level) is 35% of VIN - both specified over –40°C to +125°C. This allows direct interfacing with 3.3 V or 5 V GPIOs without level-shifting. When EN is below VIL, the device enters 3 µA shutdown mode; when above VIH, it operates normally with full 2.5 V output regulation.
Is the LM4132AQ1MFT2.5 qualified for automotive applications?
Yes, the LM4132AQ1MFT2.5 is AEC-Q100 qualified for Device Temperature Grade 1 (–40°C to +125°C ambient), with HBM ESD rating of ±2000 V. It is explicitly designated as an automotive-grade part (denoted by "-Q1" suffix in the family name), and its characterization - including tempco, long-term stability, and thermal hysteresis - was performed across the full automotive temperature range per AEC-Q100 test requirements.
What is the typical output noise performance of the LM4132AQ1MFT2.5?
The LM4132AQ1MFT2.5 delivers 240 µVPP (peak-to-peak) output noise over the 0.1 Hz to 10 Hz bandwidth - a critical specification for high-resolution data acquisition. This value is measured under standard conditions (TJ = 25°C, VIN = 5 V, ILOAD = 0 mA) and is confirmed in Section 6.7 of the official datasheet. The noise performance remains consistent across grades and is unaffected by the enable pin state in active mode.
LM4132AQ1MFT2.5 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):
- 2.5V
- Voltage - Output (Max):
- -
- Current - Output:
- 20 mA
- Tolerance:
- ±0.05%
- Temperature Coefficient:
- 20ppm/°C
- Noise - 0.1Hz to 10Hz:
- 240µVp-p
- Noise - 10Hz to 10kHz:
- -
- Voltage - Input:
- 2.9V ~ 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
LM4132AQ1MFT2.5 FAQ
1.How can I place an order for LM4132AQ1MFT2.5 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4132AQ1MFT2.5 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 LM4132AQ1MFT2.5 reliable?
The price and inventory of LM4132AQ1MFT2.5 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4132AQ1MFT2.5 is usually 5 days.
3.What payment methods are accepted for LM4132AQ1MFT2.5?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4132AQ1MFT2.5 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4132AQ1MFT2.5?
LM4132AQ1MFT2.5 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4132AQ1MFT2.5 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 LM4132AQ1MFT2.5?
For technical support, including LM4132AQ1MFT2.5 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4132AQ1MFT2.5 requirements.
6.How does Aetrix verify that LM4132AQ1MFT2.5 is sourced from the original manufacturer or authorized distributors?
All LM4132AQ1MFT2.5 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 LM4132AQ1MFT2.5 meets industry standards.
7.What is the process for return or replacement of LM4132AQ1MFT2.5?
All LM4132AQ1MFT2.5 units undergo pre-shipment inspection (PSI). If there is an issue with LM4132AQ1MFT2.5, 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 LM4132AQ1MFT2.5 part is unused and in its original packaging.
Return procedure for LM4132AQ1MFT2.5:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM4132AQ1MFT2.5 Tags
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