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Texas Instruments LM4132BMFX-4.1/NOPB
- Part No.:
- LM4132BMFX-4.1/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LM4132BMFX-4.1/NOPB.pdf
- Description:
- IC VREF SERIES 0.1% SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:4,039
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Product details
Overview
LM4132BMFX-4.1/NOPB from Texas Instruments is a precision low-dropout (LDO) series voltage reference IC delivering a stable 4.096 V output with ±0.1% initial accuracy (B grade), 10 ppm/°C temperature coefficient (0°C to 85°C), 60 µA supply current, and 20 mA output drive capability - used in high-resolution ADC/DAC biasing, portable instrumentation, and automotive sensor signal conditioning.
For engineers reviewing the LM4132BMFX-4.1/NOPB datasheet, LM4132BMFX-4.1/NOPB pinout, LM4132BMFX-4.1/NOPB application, or LM4132BMFX-4.1/NOPB equivalent, key selection criteria include dropout voltage ≤400 mV at 10 mA load, enable-controlled 3 µA shutdown mode, stability with ceramic capacitors, and SOT-23-5 package compatibility for space-constrained PCB layouts.
Technical Context
The LM4132BMFX-4.1/NOPB implements a CMOS band-gap architecture with EEPROM-based curvature and tempco correction, enabling laser-trimmed-level precision without laser trimming. Its internal LDO regulator delivers regulated 4.096 V output referenced to GND, with VIN required ≥ VREF + 400 mV (i.e., ≥4.496 V) up to 5.5 V.
It features an active-high EN pin that controls operation between normal mode (60 µA IQ) and shutdown mode (3 µA IQ), and requires only CIN (input capacitor); COUT is optional. No external buffer amplifier is needed due to its 20 mA source/sink capability and low-output-impedance design.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 4.096 V ±0.1% (B grade, 25°C) - enables direct interface with 12-bit ADCs requiring exact 4.096 V full-scale reference |
| Initial Accuracy | ±0.1% (B grade) - guarantees ≤4.1 mV absolute error at 25°C, critical for calibration-grade measurement systems |
| Tempco | 10 ppm/°C (0°C to 85°C), 20 ppm/°C (–40°C to 125°C) - ensures ≤±0.82 mV drift over industrial temperature range |
| Dropout Voltage | 175 mV (typ.) at 10 mA load - supports operation from 4.271 V input, ideal for single-cell Li-ion or 5 V rail margining |
| Supply Current | 60 µA (active), 3 µA (shutdown) - extends battery life in portable equipment with duty-cycled reference usage |
| Load Regulation | 25 ppm/mA (0–20 mA) - maintains ≤0.1 mV output shift across full load range, suitable for dynamic current-sensing circuits |
| Line Regulation | 100 ppm/V (VREF + 400 mV to 5.5 V) - rejects input ripple effectively in noisy power domains |
Pinout & Package
SOT-23-5 (DBV) package: 2.90 mm × 1.60 mm body, 0.95 mm height, gull-wing leads, RoHS-compliant, tape-and-reel packaging.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | N/C | No-connect terminal - must remain unconnected and floating per datasheet; no internal connection |
| 2 | GND | Analog ground reference - requires low-impedance PCB return path to minimize noise coupling into VREF |
| 3 | EN | Enable control input - logic-high (≥65% VIN) activates output; logic-low (≤35% VIN) enters 3 µA shutdown |
| 4 | VIN | Input supply - accepts 4.496 V to 5.5 V; requires ≥1 µF low-ESR ceramic capacitor (CIN) for stability |
| 5 | VREF | Precision output - delivers 4.096 V ±0.1%; capable of sourcing/sinking up to 20 mA with <0.5% regulation error |
Key Features
| Feature | Design Value |
|---|---|
| EEPROM-trimmed CMOS band-gap | Eliminates post-assembly accuracy shift - achieves 0.1% initial tolerance without laser trimming, reducing cost vs bipolar references |
| Enable-controlled shutdown | Reduces quiescent current from 60 µA to 3 µA - enables micro-power sleep modes in battery-operated data loggers |
| Capacitor-stable operation | Stable with standard 1 µF X7R ceramic input cap (CIN); no output capacitor required - simplifies layout and reduces BOM count |
| Low-noise 4.096 V output | 350 µVPP (0.1–10 Hz) - supports 16-bit+ resolution in precision analog front-ends without external filtering |
| AEC-Q100 Grade 1 qualified | Rated for –40°C to +125°C ambient - validated for automotive engine control, ADAS sensor modules, and under-hood applications |
Applications
| Portable Data Acquisition | Automotive Sensor Signal Conditioning |
|---|---|
Use Scenario: Handheld multimeter acquiring 12-bit ADC samples from thermocouple and RTD inputs. IC Role / Device Role / Timing Role: Primary voltage reference for SAR ADC conversion, providing exact 4.096 V full-scale range. Use Value: Enables ±1 LSB accuracy at 12-bit resolution without calibration; 10 ppm/°C tempco ensures stable readings across operating temperature. |
Use Scenario: Pressure sensor module in brake-by-wire system requiring ratiometric output with high long-term stability. IC Role / Device Role / Timing Role: Stable excitation reference for Wheatstone bridge and ADC reference for digitizing sensor output. Use Value: AEC-Q100 qualification and 50 ppm long-term stability (1000 hrs) ensure functional safety compliance over vehicle lifetime. |
| Industrial PLC Analog Input Module | Battery-Powered Medical Monitor |
Use Scenario: 16-channel 16-bit isolated analog input card processing 4–20 mA loop signals. IC Role / Device Role / Timing Role: Shared precision reference for multiple ADCs and DACs in modular I/O architecture. Use Value: 20 mA drive capability allows daisy-chained reference distribution; low 350 µVPP noise prevents SNR degradation. |
Use Scenario: Portable ECG device powered by coin-cell battery, sampling at 1 kSPS with >80 dB SNR requirement. IC Role / Device Role / Timing Role: Low-power reference for delta-sigma ADC and programmable gain amplifier biasing. Use Value: 3 µA shutdown current extends battery life during standby; 60 µA active IQ enables continuous monitoring without thermal drift. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REF3340AIDBVR | Fixed 4.096 V, 30 ppm/°C max tempco (–40°C to 125°C), 3.8 µA IQ, SOT-23-5, no enable pin | Lacks shutdown control; lower drive (10 mA); suited for ultra-low-power always-on nodes where enable is unnecessary | Select when minimal quiescent current dominates over enable flexibility and load drive capability |
| ADR3440ARJZ-R7 | 4.096 V, 10 ppm/°C (–40°C to +125°C), 120 µA IQ, SOT-23-5, no enable, higher noise (50 µVPP, 0.1–10 Hz) | Higher supply current and noise; lacks enable but offers tighter tempco over full automotive range | Select when full-range tempco performance is prioritized over power efficiency and noise floor |
Compared with REF3340AIDBVR and ADR3440ARJZ-R7, the LM4132BMFX-4.1/NOPB uniquely combines enable control, 20 mA drive, and 10 ppm/°C tempco over 0°C–85°C - making it optimal for dynamically powered, multi-channel precision systems where both accuracy and controllability matter.
Availability
LM4132BMFX-4.1/NOPB is available at Aetrix Electronics and suitable for portable instrumentation, automotive sensor modules, and industrial PLC analog input designs requiring stable component supply, long-lifecycle support, and AEC-Q100-qualified reliability.
Supply support for LM4132BMFX-4.1/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 ICs.
The LM4132 family was designed to deliver laser-trimmed reference performance using cost-effective CMOS + EEPROM trimming - targeting high-accuracy, low-power, and automotive-grade applications where stability and manufacturability are critical.
FAQ
What is the output voltage tolerance of the LM4132BMFX-4.1/NOPB at 25°C?
The LM4132BMFX-4.1/NOPB has a guaranteed initial output voltage tolerance of ±0.1% at 25°C (B grade), corresponding to ±4.1 mV around the nominal 4.096 V output. This specification is 100% production tested and applies under recommended operating conditions: VIN = 5 V, ILOAD = 0 mA, and TJ = 25°C. The LM4132BMFX-4.1/NOPB does not require calibration to meet this accuracy.
Does the LM4132BMFX-4.1/NOPB require an output capacitor for stability?
No, the LM4132BMFX-4.1/NOPB is internally compensated and stable without an output capacitor (COUT). The datasheet explicitly states COUT is optional, and the device delivers full 20 mA output drive capability with <0.5% regulation error even with zero output capacitance. Only CIN (≥1 µF ceramic) is mandatory for input stability.
What is the minimum input voltage required for the LM4132BMFX-4.1/NOPB to maintain regulation?
The LM4132BMFX-4.1/NOPB requires VIN ≥ VREF + 400 mV to maintain regulation - i.e., ≥4.496 V at 25°C. At 10 mA load, typical dropout is 175 mV, so regulation is maintained down to ~4.271 V input. However, the absolute minimum specified VIN is VREF + 400 mV across –40°C to +125°C to guarantee 0.5% output accuracy under worst-case conditions.
Is the LM4132BMFX-4.1/NOPB qualified for automotive applications?
Yes, the LM4132BMFX-4.1/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 control, chassis, and ADAS subsystems. While the base LM4132 is qualified, note that LM4132-Q1 variants carry additional automotive-specific test reporting - the LM4132BMFX-4.1/NOPB shares the same die and qualification.
How does the enable pin (EN) function on the LM4132BMFX-4.1/NOPB?
The EN pin on the LM4132BMFX-4.1/NOPB is an active-high digital control: applying ≥65% of VIN places the device in normal operation (60 µA IQ); applying ≤35% of VIN forces shutdown (3 µA IQ). There is no hysteresis or internal pull-up/down - external logic or microcontroller GPIO must drive EN directly. The pin has no effect on output impedance or noise performance in either state.
LM4132BMFX-4.1/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):
- 4.096V
- Voltage - Output (Max):
- -
- Current - Output:
- 20 mA
- Tolerance:
- ±0.1%
- Temperature Coefficient:
- 20ppm/°C
- Noise - 0.1Hz to 10Hz:
- 350µVp-p
- Noise - 10Hz to 10kHz:
- -
- Voltage - Input:
- 4.496V ~ 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
LM4132BMFX-4.1/NOPB FAQ
1.How can I place an order for LM4132BMFX-4.1/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4132BMFX-4.1/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 LM4132BMFX-4.1/NOPB reliable?
The price and inventory of LM4132BMFX-4.1/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4132BMFX-4.1/NOPB is usually 5 days.
3.What payment methods are accepted for LM4132BMFX-4.1/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4132BMFX-4.1/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4132BMFX-4.1/NOPB?
LM4132BMFX-4.1/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4132BMFX-4.1/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 LM4132BMFX-4.1/NOPB?
For technical support, including LM4132BMFX-4.1/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4132BMFX-4.1/NOPB requirements.
6.How does Aetrix verify that LM4132BMFX-4.1/NOPB is sourced from the original manufacturer or authorized distributors?
All LM4132BMFX-4.1/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 LM4132BMFX-4.1/NOPB meets industry standards.
7.What is the process for return or replacement of LM4132BMFX-4.1/NOPB?
All LM4132BMFX-4.1/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM4132BMFX-4.1/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 LM4132BMFX-4.1/NOPB part is unused and in its original packaging.
Return procedure for LM4132BMFX-4.1/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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