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Texas Instruments LM4132AMFX-3.0/NOPB
- Part No.:
- LM4132AMFX-3.0/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LM4132AMFX-3.0/NOPB.pdf
- Description:
- IC VREF SERIES 0.05% SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,663
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Product details
Overview
LM4132AMFX-3.0/NOPB from Texas Instruments is a precision low-dropout series 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. It operates from VIN = VREF + 400 mV to 5.5 V and supports up to 20 mA load current - ideal for high-accuracy ADC/DAC biasing in portable instrumentation and battery-powered data acquisition systems.
For engineers reviewing the LM4132AMFX-3.0/NOPB datasheet, LM4132AMFX-3.0/NOPB pinout, LM4132AMFX-3.0/NOPB application, or LM4132AMFX-3.0/NOPB equivalent, key selection considerations include its SOT-23-5 package, enable-controlled shutdown (3 µA), dropout voltage of 175 mV at 10 mA, stability with low-ESR ceramic capacitors, and AEC-Q100 Grade 1 qualification for automotive ambient operation (–40°C to +125°C).
Technical Context
The LM4132AMFX-3.0/NOPB implements a CMOS band-gap architecture with EEPROM-based curvature, tempco, and accuracy correction - enabling factory programming at package level to compensate for assembly-induced shifts. This eliminates laser trimming while achieving performance comparable to premium bipolar references.
It functions as a series reference with integrated enable logic, requiring only an input capacitor (CIN) and optionally an output capacitor (COUT). Its 20-mA output drive capability, absence of mandatory buffer amplifiers, and no-load quiescent current of 60 µA make it suitable for space-constrained, low-power precision analog signal chains.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 3.0 V ±0.05% (A-grade initial accuracy at 25°C) |
| Tempco | 10 ppm/°C (0°C to 85°C); enables <±0.25 mV drift over industrial range |
| Dropout Voltage | 175 mV at 10 mA load; allows operation from 3.175 V input in 3.3 V systems |
| Quiescent Current | 60 µA typical; supports >1-year battery life in 10-µA average-current portable designs |
| Shutdown Current | 3 µA at EN = 0 V; reduces system standby power by >95% vs active mode |
| Load Regulation | 25 ppm/mA (0–20 mA); ensures <0.075 mV output shift across full load range |
| Line Regulation | 70 ppm/V (VREF + 400 mV to 5.5 V); maintains stability under varying supply conditions |
Pinout & Package
SOT-23-5 (DBV) package: 2.90 mm × 1.60 mm body, 0.95 mm height, gull-wing leads. RoHS-compliant, lead-free, and qualified per AEC-Q100 Grade 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - N/C | No-connect terminal | Must remain floating; no internal connection or function |
| 2 - GND | Analog ground reference | Primary return path for reference output and internal circuitry; requires low-impedance PCB connection |
| 3 - EN | Active-high enable input | Drives device into 3 µA shutdown when pulled low (<35% VIN); high threshold ≥65% VIN |
| 4 - VIN | Input supply rail | Accepts 3.4 V to 5.5 V; minimum headroom = VREF + 400 mV for regulation |
| 5 - VREF | Precision output terminal | Delivers regulated 3.0 V; capable of sourcing up to 20 mA with <0.5% error |
Key Features
| Feature | Design Value |
|---|---|
| EEPROM-trimmed accuracy | 0.05% initial tolerance achieved via post-assembly digital calibration - avoids laser-trimming cost and yield loss |
| Low-noise output | 285 µVPP (0.1–10 Hz); supports 16-bit+ SAR ADCs without external filtering |
| Capacitor flexibility | Stable with low-ESR ceramic capacitors only; eliminates need for tantalum or electrolytic output caps |
| Automotive qualification | AEC-Q100 Grade 1 (–40°C to +125°C ambient); validated for engine control, ADAS sensors, and infotainment power rails |
| High output drive | 20 mA source capability; directly powers op-amp bias networks or small DACs without external buffers |
Applications
| Portable Data Loggers | Automotive Sensor Signal Conditioning |
|---|---|
|
Use Scenario: Battery-powered environmental monitoring unit sampling temperature, humidity, and pressure at 100 kSPS using a 16-bit SAR ADC. IC Role / Device Role / Timing Role: Provides stable 3.0 V reference for ADC VREF pin and analog front-end op-amp biasing. Use Value: 10 ppm/°C tempco and 0.05% accuracy ensure <±0.5 LSB total unadjusted error over –20°C to +70°C operating range. |
Use Scenario: Tire pressure monitoring system (TPMS) ECU measuring piezoresistive sensor bridge output in under-hood environments. IC Role / Device Role / Timing Role: Supplies excitation voltage and reference for ratiometric bridge measurement and 12-bit delta-sigma ADC. Use Value: AEC-Q100 Grade 1 rating and 175 mV dropout allow reliable operation from degraded 3.6 V battery during cold cranking. |
| Industrial PLC Analog Input Modules | Medical Patient Monitor Front-Ends |
|
Use Scenario: 4–20 mA loop-powered I/O module converting field signals to isolated digital outputs for DCS systems. IC Role / Device Role / Timing Role: Generates precise 3.0 V reference for current-sense amplifier gain setting and ADC reference. Use Value: 20 mA output drive and 25 ppm/mA load regulation eliminate external buffer, reducing BOM count and layout area. |
Use Scenario: Portable ECG monitor digitizing biopotential signals with ultra-low noise and high common-mode rejection. IC Role / Device Role / Timing Role: Supplies reference voltage for instrumentation amplifier and 24-bit sigma-delta ADC. Use Value: 285 µVPP (0.1–10 Hz) low-frequency noise prevents baseline wander artifacts in sub-Hz physiological waveforms. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REF3030AIDBZR | Fixed 3.0 V, 0.1% initial accuracy, 50 ppm/°C tempco, 50 µA IQ, SOT-23-3, no enable pin | Lacks shutdown control and grade-A tempco; lower accuracy limits use in 16-bit+ systems | Select when board space is constrained and enable functionality is unnecessary |
| ADR3430ARJZ-R7 | Fixed 3.0 V, 0.1% initial accuracy, 10 ppm/°C tempco, 120 µA IQ, SOT-23-5, no enable | Higher quiescent current and no enable pin; same tempco but less flexible power management | Prefer when long-term stability (15 ppm/1kHr) is prioritized over low IQ or shutdown capability |
Compared with REF3030AIDBZR and ADR3430ARJZ-R7, the LM4132AMFX-3.0/NOPB uniquely combines A-grade 0.05% accuracy, 10 ppm/°C tempco, 3 µA shutdown, and 20 mA drive in a single SOT-23-5 package - making it optimal for battery-sensitive, high-precision, and automotive-grade applications where both accuracy and controllability are critical.
Availability
LM4132AMFX-3.0/NOPB is available at Aetrix Electronics and suitable for portable instrumentation, automotive sensor modules, and industrial PLC analog input circuits requiring stable component supply, long-lifecycle support, and AEC-Q100 compliance.
Supply support for LM4132AMFX-3.0/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 leader specializing in analog, embedded processing, and connectivity technologies, with decades of expertise in precision analog design and automotive-grade reliability.
The LM4132 family was engineered to deliver laser-trimmed bipolar reference performance using cost-effective, programmable CMOS technology - targeting high-accuracy data conversion, sensor excitation, and power management in space- and power-constrained systems.
FAQ
What is the maximum input voltage for the LM4132AMFX-3.0/NOPB?
The LM4132AMFX-3.0/NOPB supports a maximum input voltage of 5.5 V, as specified in the Absolute Maximum Ratings table. Operation above this voltage risks permanent damage. For reliable regulation, VIN must remain within VREF + 400 mV (i.e., ≥3.4 V) to 5.5 V across all load and temperature conditions.
Does the LM4132AMFX-3.0/NOPB require an output capacitor for stability?
No, the LM4132AMFX-3.0/NOPB is stable with or without an output capacitor (COUT). The datasheet states COUT is optional, and the device remains stable with low-ESR ceramic capacitors if used. Only the input capacitor (CIN) is required for proper operation.
What does the 'A' grade signify in LM4132AMFX-3.0/NOPB?
The 'A' in LM4132AMFX-3.0/NOPB denotes the highest accuracy grade: ±0.05% initial output voltage tolerance at 25°C and ≤10 ppm/°C temperature coefficient over 0°C to 85°C. This grade is validated per TI's production test flow and is essential for 16-bit+ data converter applications.
Can the LM4132AMFX-3.0/NOPB be used in automotive applications?
Yes - the LM4132AMFX-3.0/NOPB is AEC-Q100 Grade 1 qualified (–40°C to +125°C ambient), with HBM ESD rating of ±2000 V. It meets automotive reliability requirements for engine bay, cabin, and ADAS subsystems where precision voltage referencing is needed under harsh thermal and electrical conditions.
How does the enable pin (EN) function on the LM4132AMFX-3.0/NOPB?
The EN pin on the LM4132AMFX-3.0/NOPB is an active-high digital control input. When pulled below 35% of VIN, the device enters shutdown mode drawing only 3 µA. When driven above 65% of VIN, it enables normal operation with 60 µA quiescent current and full 3.0 V output regulation.
LM4132AMFX-3.0/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):
- 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:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
LM4132AMFX-3.0/NOPB FAQ
1.How can I place an order for LM4132AMFX-3.0/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4132AMFX-3.0/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-3.0/NOPB reliable?
The price and inventory of LM4132AMFX-3.0/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-3.0/NOPB is usually 5 days.
3.What payment methods are accepted for LM4132AMFX-3.0/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4132AMFX-3.0/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4132AMFX-3.0/NOPB?
LM4132AMFX-3.0/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4132AMFX-3.0/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-3.0/NOPB?
For technical support, including LM4132AMFX-3.0/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4132AMFX-3.0/NOPB requirements.
6.How does Aetrix verify that LM4132AMFX-3.0/NOPB is sourced from the original manufacturer or authorized distributors?
All LM4132AMFX-3.0/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-3.0/NOPB meets industry standards.
7.What is the process for return or replacement of LM4132AMFX-3.0/NOPB?
All LM4132AMFX-3.0/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM4132AMFX-3.0/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-3.0/NOPB part is unused and in its original packaging.
Return procedure for LM4132AMFX-3.0/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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