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Texas Instruments LM4132BMFX-1.8/NOPB
- Part No.:
- LM4132BMFX-1.8/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LM4132BMFX-1.8/NOPB.pdf
- Description:
- IC VREF SERIES 0.1% SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:4,953
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Product details
Overview
LM4132BMFX-1.8/NOPB from Texas Instruments is a precision low-dropout (LDO) voltage reference IC delivering a stable 1.8 V output with ±0.1% initial accuracy (B-grade), 10 ppm/°C temperature coefficient (0°C to 85°C), 60 µA supply current, and 230 mV dropout at 10 mA load - used in high-accuracy ADC/DAC biasing, portable instrumentation, and battery-powered test equipment.
For engineers reviewing the LM4132BMFX-1.8/NOPB datasheet, LM4132BMFX-1.8/NOPB pinout, LM4132BMFX-1.8/NOPB application, or LM4132BMFX-1.8/NOPB equivalent, key selection criteria include enable-controlled shutdown (3 µA), stability with ceramic capacitors, no required output buffer, and SOT-23-5 packaging for space-constrained PCBs.
Technical Context
The LM4132BMFX-1.8/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, eliminating idle current waste inherent in shunt topologies.
Its enable pin supports active-high logic control (VIH = 65% VIN), allowing precise power sequencing in multi-rail systems. The device maintains regulation down to VIN = VREF + 400 mV and sustains 20 mA output current without external buffering or mandatory output capacitance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 1.8 V nominal, ±0.1% initial accuracy (B grade) - ensures ≤1.8 mV absolute error at 25°C for 12-bit+ data converters |
| Tempco | 10 ppm/°C (0°C to 85°C), 20 ppm/°C (–40°C to 125°C) - enables ≤±0.22 mV drift over full industrial range |
| Dropout Voltage | 230 mV at 10 mA (typical), max 400 mV - allows operation from 2.03 V input, critical for single-cell Li-ion or coin-cell systems |
| Supply Current | 60 µA (typical), ≤100 µA (–40°C to 125°C) - minimizes quiescent power in always-on sensor nodes |
| Shutdown Current | 3 µA (typical), ≤7 µA (–40°C to 125°C) - enables ultra-low-power sleep modes in portable devices |
| Load Regulation | 25 ppm/mA (0–20 mA), ≤120 ppm/mA over temperature - ensures ≤0.45 mV output shift across full load range |
| Line Regulation | 30 ppm/V (VREF + 400 mV to 5.5 V) - guarantees ≤0.054 mV change per volt input variation |
Pinout & Package
SOT-23-5 package (2.90 mm × 1.60 mm body), surface-mount, RoHS-compliant. Pin 1 is NC (no connect); pin 2 is GND; pin 3 is EN (enable input); pin 4 is VIN (input supply); pin 5 is VREF (precision output).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (NC) | No-connect terminal | Must remain unconnected - floating; not internally bonded |
| Pin 2 (GND) | Analog ground reference | Primary return path for reference current; requires low-impedance PCB connection to minimize noise coupling |
| Pin 3 (EN) | Digital enable input | Active-high control: ≥65% VIN enables output; ≤35% VIN forces shutdown (3 µA IQ) |
| Pin 4 (VIN) | Input supply rail | Accepts 2.2 V to 5.5 V; must exceed VREF by ≥400 mV for regulation |
| Pin 5 (VREF) | Precision reference output | 1.8 V source capable of sourcing/sinking up to ±20 mA; stable with ≥1 µF ceramic capacitor |
Key Features
| Feature | Design Value |
|---|---|
| EEPROM-trimmed CMOS band-gap | Eliminates assembly-induced voltage shift - achieves laser-trimmed accuracy in cost-effective plastic packaging |
| Enable-controlled shutdown | Reduces supply current from 60 µA to 3 µA, enabling rapid power cycling in energy-harvesting or wake-on-event systems |
| No output capacitor required | Stable with 0 µF COUT - simplifies layout, reduces BOM count, and avoids capacitor aging effects on long-term drift |
| 20 mA output drive capability | Directly drives ADC reference inputs, op-amp bias networks, or small DAC loads without external buffers |
| Low 0.1–10 Hz noise | 170 µVPP - critical for high-resolution (≥16-bit) measurement systems where low-frequency noise dominates ENOB loss |
Applications
| Portable Data Loggers | Automotive Sensor Signal Conditioning |
|---|---|
Use Scenario: Battery-powered environmental monitors logging temperature, humidity, and pressure with 16-bit SAR ADCs. IC Role / Device Role / Timing Role: Provides stable 1.8 V reference for ADC conversion and microcontroller analog peripherals. Use Value: Enables <1 LSB error over –40°C to +85°C with only 60 µA quiescent draw, extending battery life beyond 2 years on CR2032. |
Use Scenario: Engine control unit (ECU) front-end circuits conditioning signals from oxygen and knock sensors. IC Role / Device Role / Timing Role: Supplies precision bias voltage for op-amp signal chains and ADC references in AEC-Q100 Grade 1 systems. Use Value: Maintains ±0.1% accuracy and 10 ppm/°C tempco across –40°C to +125°C ambient, meeting automotive calibration requirements. |
| Medical Patient Monitoring | Industrial PLC Analog Input Modules |
Use Scenario: Wearable ECG/SpO₂ devices requiring low-noise, low-power analog front-ends. IC Role / Device Role / Timing Role: Delivers ultra-low-noise (170 µVPP, 0.1–10 Hz) 1.8 V reference for biopotential amplifier biasing. Use Value: Reduces baseline wander and improves SNR by >15 dB versus standard references, enhancing arrhythmia detection fidelity. |
Use Scenario: Modular I/O cards converting 4–20 mA field signals to digital values in factory automation systems. IC Role / Device Role / Timing Role: Serves as master reference for 24-bit delta-sigma ADCs and programmable gain amplifiers. Use Value: Achieves <±0.01% total unadjusted error (TUE) over temperature and time, supporting SIL-2 functional safety compliance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REF3018AIDBZR | Fixed 1.8 V, 50 ppm/°C max tempco, 50 µA IQ, no enable pin, SOT-23-3 | Lacks shutdown control and has higher tempco - suitable only for non-sequenced, low-temp-gradient environments | Select when board space is constrained (3-pin vs 5-pin) and enable functionality is unnecessary |
| ADR3418ARJZ-R7 | 1.8 V, 10 ppm/°C max, 65 µA IQ, no enable, TSOT-23-5 (same footprint but different pinout) | Pin 3 is GND (not EN); requires PCB redesign - offers better long-term stability (30 ppm/1k hrs) but no power gating | Choose for metrology-grade stability where shutdown is managed externally via LDO control |
Compared with REF3018AIDBZR and ADR3418ARJZ-R7, the LM4132BMFX-1.8/NOPB uniquely combines B-grade accuracy, enable control, and SOT-23-5 compatibility - making it optimal for battery-critical, power-sequenced, and space-limited designs where both precision and controllability are mandatory.
Availability
LM4132BMFX-1.8/NOPB is available at Aetrix Electronics and suitable for portable instrumentation, automotive sensor modules, and medical monitoring devices requiring stable component supply with guaranteed long-term continuity.
Supply support for LM4132BMFX-1.8/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.
The LM4132 family was engineered to deliver laser-trimmed voltage reference performance using cost-effective CMOS and EEPROM trimming - targeting high-accuracy data acquisition, test equipment, and battery-powered industrial systems.
FAQ
What is the maximum load current supported by the LM4132BMFX-1.8/NOPB?
The LM4132BMFX-1.8/NOPB delivers up to 20 mA of continuous output current while maintaining regulation and specified accuracy. This allows direct driving of ADC reference inputs, op-amp bias networks, and small DACs without external buffers - verified across –40°C to +125°C ambient temperature.
Does the LM4132BMFX-1.8/NOPB require an output capacitor for stability?
No, the LM4132BMFX-1.8/NOPB is internally compensated and stable with 0 µF output capacitance. A ceramic capacitor (≥1 µF) is optional and may be added to further reduce high-frequency noise, but it is not required for loop stability - unlike many competing references.
What is the enable pin logic threshold for the LM4132BMFX-1.8/NOPB?
The LM4132BMFX-1.8/NOPB enable pin uses ratio-metric thresholds: VIH ≥ 65% of VIN enables the output, and VIL ≤ 35% of VIN places the device in 3 µA shutdown mode. This ensures robust operation across varying input voltages from 2.2 V to 5.5 V.
How does the LM4132BMFX-1.8/NOPB achieve 10 ppm/°C temperature coefficient?
The LM4132BMFX-1.8/NOPB achieves 10 ppm/°C (0°C to 85°C) via EEPROM-programmable curvature correction applied to its CMOS band-gap core - compensating for second-order thermal effects during final test, eliminating post-assembly drift common in laser-trimmed die-in-plastic packages.
Is the LM4132BMFX-1.8/NOPB qualified for automotive applications?
No - the LM4132BMFX-1.8/NOPB is the commercial-grade version. For automotive use, TI offers the LM4132QDBVR (Q1 variant), which is AEC-Q100 Grade 1 qualified (–40°C to +125°C) and listed separately with distinct part numbering and qualification documentation.
LM4132BMFX-1.8/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):
- 1.8V
- Voltage - Output (Max):
- -
- Current - Output:
- 20 mA
- Tolerance:
- ±0.1%
- Temperature Coefficient:
- 20ppm/°C
- Noise - 0.1Hz to 10Hz:
- 170µVp-p
- Noise - 10Hz to 10kHz:
- -
- Voltage - Input:
- 2.2V ~ 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-1.8/NOPB FAQ
1.How can I place an order for LM4132BMFX-1.8/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4132BMFX-1.8/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-1.8/NOPB reliable?
The price and inventory of LM4132BMFX-1.8/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-1.8/NOPB is usually 5 days.
3.What payment methods are accepted for LM4132BMFX-1.8/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4132BMFX-1.8/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4132BMFX-1.8/NOPB?
LM4132BMFX-1.8/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4132BMFX-1.8/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-1.8/NOPB?
For technical support, including LM4132BMFX-1.8/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4132BMFX-1.8/NOPB requirements.
6.How does Aetrix verify that LM4132BMFX-1.8/NOPB is sourced from the original manufacturer or authorized distributors?
All LM4132BMFX-1.8/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-1.8/NOPB meets industry standards.
7.What is the process for return or replacement of LM4132BMFX-1.8/NOPB?
All LM4132BMFX-1.8/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM4132BMFX-1.8/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-1.8/NOPB part is unused and in its original packaging.
Return procedure for LM4132BMFX-1.8/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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