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Texas Instruments LM4132CMFX-4.1/NOPB
- Part No.:
- LM4132CMFX-4.1/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LM4132CMFX-4.1/NOPB.pdf
- Description:
- IC VREF SERIES 0.2% SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:3,698
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Product details
Overview
LM4132CMFX-4.1/NOPB from Texas Instruments is a precision low-dropout (LDO) voltage reference IC delivering a stable 4.096 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, supports up to 20 mA load current, and features an enable pin for 3 µA shutdown mode - ideal for high-resolution ADC/DAC biasing in portable instrumentation.
For engineers reviewing the LM4132CMFX-4.1/NOPB datasheet, LM4132CMFX-4.1/NOPB pinout, LM4132CMFX-4.1/NOPB application, or LM4132CMFX-4.1/NOPB equivalent, key selection criteria include its SOT-23-5 package, dropout voltage of 175 mV at 10 mA, line regulation of 100 ppm/V, and compatibility with low-ESR ceramic capacitors without requiring an output buffer.
Technical Context
The LM4132CMFX-4.1/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 architecture achieves laser-trimmed bipolar reference performance at lower cost and smaller footprint.
It functions as a series (not shunt) reference, eliminating idle current waste under no-load conditions. Its enable-controlled shutdown, absence of mandatory output capacitor, and stable operation with ceramic CIN/COUT make it suitable for space-constrained, battery-powered systems demanding long-term stability (50 ppm over 1000 hrs) and low thermal hysteresis (75 ppm).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 4.096 V ±0.05% (A-grade initial accuracy; enables 12-bit DAC/ADC full-scale calibration) |
| Tempco | 10 ppm/°C (0°C to 85°C); ensures <±0.085% output drift across industrial range |
| Dropout Voltage | 175 mV at 10 mA load; allows operation from 4.271 V input - critical for single-cell Li-ion systems |
| Quiescent Current | 60 µA typical; supports ultra-low-power sensor nodes with multi-year battery life |
| Shutdown Current | 3 µA at EN = 0 V; enables deep-sleep power gating in portable test equipment |
| Line Regulation | 100 ppm/V (VREF + 400 mV ≤ VIN ≤ 5.5 V); maintains accuracy despite supply ripple or battery sag |
| Noise (0.1–10 Hz) | 350 µVPP; low enough for 16-bit SAR ADC reference without external filtering |
Pinout & Package
SOT-23-5 (DBV) package: 2.90 mm × 1.60 mm body size, surface-mount, lead-free (RoHS-compliant), rated for –40°C to +125°C ambient operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - N/C | No-connect terminal | Must remain unconnected; floating - not tied to GND or any signal |
| 2 - GND | Ground reference | Primary return path for internal circuitry and load current; requires low-impedance PCB connection |
| 3 - EN | Enable control input | Active-high logic: VIH ≥ 65% VIN enables output; VIL ≤ 35% VIN forces 3 µA shutdown |
| 4 - VIN | Input supply | Accepts 4.496 V to 5.5 V; must be bypassed with ≥1 µF low-ESR ceramic capacitor (CIN) |
| 5 - VREF | Precision output | Delivers regulated 4.096 V; optional COUT improves transient response but not required for stability |
Key Features
| Feature | Design Value |
|---|---|
| EEPROM-trimmed CMOS band-gap | Compensates for die-to-package shift - achieves 0.05% accuracy without laser trimming |
| Enable-controlled shutdown | Reduces supply current from 60 µA to 3 µA, enabling rapid power cycling in data loggers |
| No mandatory output capacitor | Eliminates BOM cost and board area for COUT; stable with only input bypass (CIN) |
| 20 mA output drive capability | Directly drives ADC reference inputs, op-amp bias networks, or small DAC loads - no buffer needed |
| AEC-Q100 Grade 1 qualified | Validated for automotive ambient range (–40°C to +125°C), supporting infotainment and ADAS subsystems |
Applications
| Portable Data Acquisition | Automotive Sensor Signal Conditioning |
|---|---|
Use Scenario: Handheld multimeter acquiring 16-bit voltage measurements using a SAR ADC. IC Role / Device Role / Timing Role: Provides stable 4.096 V reference for ADC full-scale calibration and offset nulling. Use Value: 10 ppm/°C tempco and 350 µVPP noise ensure ≤0.5 LSB error across temperature and time. |
Use Scenario: Tire pressure monitoring system (TPMS) ECU conditioning piezoresistive bridge outputs. IC Role / Device Role / Timing Role: Supplies excitation voltage and reference for ratiometric bridge measurement. Use Value: AEC-Q100 Grade 1 qualification and 50 ppm long-term stability guarantee accuracy over 10+ year vehicle life. |
| Industrial PLC Analog Input Module | Battery-Powered Medical Monitor |
Use Scenario: 4–20 mA loop-powered I/O module digitizing field sensor signals. IC Role / Device Role / Timing Role: Precision reference for 24-bit ΣΔ ADC and programmable gain amplifier biasing. Use Value: 20 mA drive capability powers internal PGA and ADC reference simultaneously without droop. |
Use Scenario: Wearable ECG device operating from coin-cell battery for >72 hours. IC Role / Device Role / Timing Role: Low-noise, low-quiescent reference for analog front-end and ADC. Use Value: 60 µA IQ and 3 µA shutdown extend battery life while maintaining 12-bit measurement fidelity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REF3040AIDBZR | Fixed 4.096 V, 50 ppm/°C max tempco (–40°C to +125°C), 50 µA IQ, no enable pin | Lacks shutdown control; requires external enable circuitry for power gating | Choose when lowest possible tempco across full range is prioritized over shutdown functionality |
| ADR3440ARJZ-R7 | 4.096 V, 10 ppm/°C (0°C to 70°C), 120 µA IQ, no enable, SOT-23-5 | Higher quiescent current; tempco spec applies only to commercial temperature range | Choose when cost sensitivity outweighs extended temperature performance and ultra-low IQ |
Compared with REF3040AIDBZR and ADR3440ARJZ-R7, the LM4132CMFX-4.1/NOPB uniquely combines A-grade 10 ppm/°C tempco over 0°C–85°C, integrated enable, and 60 µA IQ in a single SOT-23-5 package - simplifying design for portable, automotive, and industrial systems requiring both precision and power control.
Availability
LM4132CMFX-4.1/NOPB is available at Aetrix Electronics and suitable for portable instrumentation, automotive sensor modules, industrial PLC analog inputs, and battery-powered medical monitors requiring stable component supply with guaranteed long-term availability.
Supply support for LM4132CMFX-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 company specializing in analog and embedded processing technologies, with leadership in precision analog, power management, and signal chain solutions.
The LM4132 family was designed to deliver laser-trimmed reference performance using cost-effective, package-level EEPROM trimming - targeting high-accuracy data acquisition, test equipment, and automotive systems where size, power, and stability are critical.
FAQ
What is the maximum input voltage for the LM4132CMFX-4.1/NOPB?
The LM4132CMFX-4.1/NOPB supports a maximum input voltage of 5.5 V. Operation above this rating risks permanent damage. The minimum input is VREF + 400 mV (i.e., 4.496 V), defining its low-dropout behavior. Exceeding 5.5 V violates Absolute Maximum Ratings and may degrade reliability or cause immediate failure.
Does the LM4132CMFX-4.1/NOPB require an output capacitor for stability?
No, the LM4132CMFX-4.1/NOPB is internally compensated and stable without an output capacitor. A ceramic COUT is optional and improves transient response but is not required for loop stability - unlike many older references that mandate minimum ESR or capacitance.
What does the "/NOPB" suffix indicate in LM4132CMFX-4.1/NOPB?
The "/NOPB" suffix denotes lead-free (Pb-free) and RoHS-compliant packaging. It confirms the device meets EU Restriction of Hazardous Substances requirements, with tin-only termination finish and no intentional lead content - essential for environmentally regulated industrial and automotive designs.
How does the enable pin function on the LM4132CMFX-4.1/NOPB?
The EN pin on the LM4132CMFX-4.1/NOPB is active-high: applying ≥65% of VIN enables the reference output; applying ≤35% of VIN places the device in 3 µA shutdown mode. No external pull-up/down is required, and the pin tolerates voltages up to VIN.
Is the LM4132CMFX-4.1/NOPB qualified for automotive applications?
Yes - the LM4132CMFX-4.1/NOPB is part of the LM4132-Q1 family and qualified to AEC-Q100 Grade 1 (–40°C to +125°C ambient). It meets HBM ESD Level 2 (±2000 V) and is validated for use in automotive infotainment, body electronics, and ADAS subsystems.
LM4132CMFX-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:
- ±0.2%
- 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
LM4132CMFX-4.1/NOPB FAQ
1.How can I place an order for LM4132CMFX-4.1/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4132CMFX-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 LM4132CMFX-4.1/NOPB reliable?
The price and inventory of LM4132CMFX-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 LM4132CMFX-4.1/NOPB is usually 5 days.
3.What payment methods are accepted for LM4132CMFX-4.1/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4132CMFX-4.1/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4132CMFX-4.1/NOPB?
LM4132CMFX-4.1/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4132CMFX-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 LM4132CMFX-4.1/NOPB?
For technical support, including LM4132CMFX-4.1/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4132CMFX-4.1/NOPB requirements.
6.How does Aetrix verify that LM4132CMFX-4.1/NOPB is sourced from the original manufacturer or authorized distributors?
All LM4132CMFX-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 LM4132CMFX-4.1/NOPB meets industry standards.
7.What is the process for return or replacement of LM4132CMFX-4.1/NOPB?
All LM4132CMFX-4.1/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM4132CMFX-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 LM4132CMFX-4.1/NOPB part is unused and in its original packaging.
Return procedure for LM4132CMFX-4.1/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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