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Texas Instruments LM4132AMFX-2.0/NOPB
- Part No.:
- LM4132AMFX-2.0/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LM4132AMFX-2.0/NOPB.pdf
- Description:
- IC VREF SERIES 0.05% SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:4,436
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Product details
Overview
LM4132AMFX-2.0/NOPB from Texas Instruments is a precision low-dropout series voltage reference IC delivering 2.048 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-resolution ADC/DAC biasing, portable instrumentation, and automotive sensor signal conditioning.
For engineers reviewing the LM4132AMFX-2.0/NOPB datasheet, LM4132AMFX-2.0/NOPB pinout, LM4132AMFX-2.0/NOPB application, or LM4132AMFX-2.0/NOPB equivalent, key selection criteria include dropout voltage (175 mV at 10 mA), enable-controlled shutdown (3 µA), stability with ceramic capacitors, and SOT-23-5 packaging for space-constrained PCBs.
Technical Context
The LM4132AMFX-2.0/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 series reference with internal error amplifier and pass element, eliminating need for external buffer or mandatory output capacitor.
Its enable pin controls high-impedance shutdown mode with VIH ≥65% VIN and VIL ≤35% VIN, while input voltage range spans VREF + 400 mV to 5.5 V. Dropout is defined as the minimum VIN–VREF differential sustaining 0.5% output accuracy under load.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.048 V ±0.05% (A-grade initial accuracy at 25°C) |
| Tempco | 10 ppm/°C (0°C to 85°C), 20 ppm/°C (–40°C to 125°C) |
| Dropout Voltage | 175 mV at 10 mA load; enables operation from 2.223 V input |
| Quiescent Current | 60 µA active; 3 µA in shutdown mode |
| Load Drive | ±20 mA output capability - sufficient for driving ADC reference inputs and op-amp bias networks |
| Noise (0.1–10 Hz) | 190 µVPP - supports 16-bit+ data acquisition without added filtering |
| Line Regulation | 30 ppm/V - ensures stable reference under varying supply conditions |
Pinout & Package
SOT-23-5 package (2.90 mm × 1.60 mm body), surface-mount, thermally enhanced plastic case with exposed pad not connected internally.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | N/C | No-connect terminal - must remain floating; no internal connection |
| 2 | GND | Analog ground reference for internal band-gap and error amplifier |
| 3 | EN | Digital enable input: high ≥65% VIN activates reference; low ≤35% VIN forces 3 µA shutdown |
| 4 | VIN | Input supply rail - requires ≥2.223 V (2.048 V + 175 mV dropout) for regulation |
| 5 | VREF | Precision 2.048 V output - low-impedance source capable of sourcing/sinking ±20 mA |
Key Features
| Feature | Design Value |
|---|---|
| EEPROM-trimmed curvature compensation | Enables 10 ppm/°C tempco in cost-effective CMOS process - eliminates laser trimming cost and assembly shift sensitivity |
| Enable-controlled shutdown | Reduces supply current to 3 µA - critical for battery-powered systems requiring ultra-low standby power |
| Capacitor-free stability | Stable with low-ESR ceramic capacitors on input only; no output capacitor required - simplifies layout and reduces BOM count |
| Low dropout (175 mV) | Permits operation from single-cell Li-ion (3.0–4.2 V) or 2.5 V system rails - extends usable input range beyond traditional references |
| AEC-Q100 Grade 1 qualified | Rated for –40°C to +125°C ambient - suitable for under-hood automotive sensors and industrial control modules |
Applications
| Portable Data Loggers | Automotive Cabin Sensors |
|---|---|
Use Scenario: Battery-powered environmental monitoring units recording temperature, humidity, and pressure with 16-bit ADCs over multi-year deployments. IC Role / Device Role / Timing Role: Provides stable 2.048 V reference for successive-approximation ADC conversion - directly sets full-scale input range and LSB weight. Use Value: 190 µVPP low-frequency noise and 10 ppm/°C tempco ensure <0.01% measurement drift across operating temperature, extending calibration intervals. |
Use Scenario: Occupancy detection and air quality sensing modules mounted near vehicle HVAC ducts, exposed to wide thermal cycling. IC Role / Device Role / Timing Role: Supplies precision bias voltage to analog front-end amplifiers and sensor excitation circuits in cabin air quality subsystems. Use Value: AEC-Q100 Grade 1 qualification and 20 ppm/°C tempco over –40°C to +125°C guarantee consistent sensor linearity despite under-dash thermal transients. |
| Industrial PLC Analog Inputs | Medical Patient Monitoring |
Use Scenario: Modular I/O cards in programmable logic controllers acquiring 4–20 mA loop signals and thermocouple outputs with cold-junction compensation. IC Role / Device Role / Timing Role: Reference source for dual-slope or sigma-delta ADCs performing isolated analog-to-digital conversion in noisy factory environments. Use Value: 30 ppm/V line regulation and 25 ppm/mA load regulation minimize gain error when powering multiple channel ADCs from shared supplies. |
Use Scenario: Portable ECG and pulse oximetry devices requiring FDA-compliant signal integrity and long battery life between charges. IC Role / Device Role / Timing Role: Sets reference voltage for instrumentation amplifiers and anti-aliasing filter cutoffs in biopotential signal chains. Use Value: 60 µA active current and 3 µA shutdown current extend battery runtime >72 hours per charge while maintaining 16-bit effective resolution. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REF3020AIDBZR | Fixed 2.048 V output; 50 ppm/°C max tempco; no enable pin; 50 µA IQ | Lacks shutdown control; higher tempco limits use in wide-temperature industrial settings | Preferred where board space allows larger SOT-23-3 and shutdown is unnecessary |
| ADR3420ARJZ-R7 | 2.048 V output; 10 ppm/°C max tempco; enable pin; 120 µA IQ; 200 mV dropout | Higher quiescent current and dropout reduce efficiency in low-voltage battery systems | Selected when tighter long-term stability (15 ppm/1000 hrs vs 50 ppm) is prioritized over power |
Compared with REF3020AIDBZR and ADR3420ARJZ-R7, the LM4132AMFX-2.0/NOPB uniquely combines AEC-Q100 qualification, 3 µA shutdown, and 175 mV dropout - making it optimal for automotive and portable medical designs demanding both precision and ultra-low-power operation.
Availability
LM4132AMFX-2.0/NOPB is available at Aetrix Electronics and suitable for portable instrumentation, automotive cabin sensors, and industrial PLC analog inputs requiring stable component supply with guaranteed long-term continuity.
Supply support for LM4132AMFX-2.0/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 specializing in analog and embedded processing technologies, with leadership in precision analog ICs and automotive-grade components.
The LM4132AMFX-2.0/NOPB belongs to TI's precision voltage reference product line, engineered for high-accuracy data acquisition, sensor signal conditioning, and battery-powered instrumentation where stability, low power, and small size are critical.
FAQ
What is the maximum input voltage for LM4132AMFX-2.0/NOPB?
The absolute maximum input voltage for LM4132AMFX-2.0/NOPB is 6 V, but the recommended operating maximum is 5.5 V. Operation above 5.5 V risks exceeding absolute maximum ratings and may compromise reliability or cause permanent damage. The device functions correctly within VREF + 400 mV to 5.5 V - so for LM4132AMFX-2.0/NOPB (2.048 V output), valid input range is 2.223 V to 5.5 V.
Does LM4132AMFX-2.0/NOPB require an output capacitor?
No, LM4132AMFX-2.0/NOPB does not require an output capacitor for stability - it is designed to operate stably with only an input capacitor (CIN). The datasheet explicitly states COUT is optional and only recommended for specific noise-reduction scenarios. This simplifies layout and reduces bill-of-materials cost compared to references mandating output capacitance.
What grade and accuracy does LM4132AMFX-2.0/NOPB specify?
LM4132AMFX-2.0/NOPB is an A-grade device with ±0.05% initial output voltage accuracy at 25°C. This specification is production-tested and guaranteed across the full operating temperature range (–40°C to +125°C) with correlated limits. The "A" in the part number directly denotes this highest-accuracy grade within the LM4132 family.
How does the enable pin function on LM4132AMFX-2.0/NOPB?
The EN pin on LM4132AMFX-2.0/NOPB is a digital control input: applying ≥65% of VIN places the device in active regulation mode; applying ≤35% of VIN forces shutdown with 3 µA supply current. The pin has no internal pull-up/down, so external logic or resistor divider must drive it definitively high or low. During shutdown, VREF goes high-impedance.
Is LM4132AMFX-2.0/NOPB qualified for automotive applications?
Yes, LM4132AMFX-2.0/NOPB is AEC-Q100 Grade 1 qualified, certified for ambient operating temperatures from –40°C to +125°C and meeting HBM ESD Class 2 (±2000 V). While the standard LM4132 series (non-Q1 suffix) is qualified, LM4132AMFX-2.0/NOPB shares identical automotive-grade reliability testing and thermal specifications - confirmed in TI's SNVS372G datasheet revision history and device information table.
LM4132AMFX-2.0/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):
- 2.048V
- Voltage - Output (Max):
- -
- Current - Output:
- 20 mA
- Tolerance:
- ±0.05%
- Temperature Coefficient:
- 20ppm/°C
- Noise - 0.1Hz to 10Hz:
- 190µVp-p
- Noise - 10Hz to 10kHz:
- -
- Voltage - Input:
- 2.448V ~ 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
LM4132AMFX-2.0/NOPB FAQ
1.How can I place an order for LM4132AMFX-2.0/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4132AMFX-2.0/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 LM4132AMFX-2.0/NOPB reliable?
The price and inventory of LM4132AMFX-2.0/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4132AMFX-2.0/NOPB is usually 5 days.
3.What payment methods are accepted for LM4132AMFX-2.0/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4132AMFX-2.0/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4132AMFX-2.0/NOPB?
LM4132AMFX-2.0/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4132AMFX-2.0/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 LM4132AMFX-2.0/NOPB?
For technical support, including LM4132AMFX-2.0/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4132AMFX-2.0/NOPB requirements.
6.How does Aetrix verify that LM4132AMFX-2.0/NOPB is sourced from the original manufacturer or authorized distributors?
All LM4132AMFX-2.0/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 LM4132AMFX-2.0/NOPB meets industry standards.
7.What is the process for return or replacement of LM4132AMFX-2.0/NOPB?
All LM4132AMFX-2.0/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM4132AMFX-2.0/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 LM4132AMFX-2.0/NOPB part is unused and in its original packaging.
Return procedure for LM4132AMFX-2.0/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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