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Texas Instruments LM4132BMF-1.8/NOPB
- Part No.:
- LM4132BMF-1.8/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LM4132BMF-1.8/NOPB.pdf
- Description:
- IC VREF SERIES 0.1% SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,317
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Product details
Overview
LM4132BMF-1.8/NOPB from Texas Instruments is a precision low-dropout (LDO) series 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-resolution ADCs, portable instrumentation, and battery-powered data acquisition systems.
For engineers reviewing the LM4132BMF-1.8/NOPB datasheet, LM4132BMF-1.8/NOPB pinout, LM4132BMF-1.8/NOPB application, or LM4132BMF-1.8/NOPB equivalent, key selection criteria include its SOT-23-5 package, enable-controlled shutdown (3 µA), 20 mA output drive capability, stability with ceramic capacitors, and automotive-grade qualification (AEC-Q100 Grade 1).
Technical Context
The LM4132BMF-1.8/NOPB employs EEPROM-trimmed CMOS band-gap architecture to achieve laser-trimmed bipolar-level accuracy without laser trimming, correcting curvature, tempco, and initial offset at package level to overcome plastic-package assembly shifts. Its internal LDO regulator operates in series configuration, eliminating need for output buffer or mandatory output capacitor.
It features an active-high enable pin (VIH = 65% VIN, VIL = 35% VIN), supports input voltages from VREF + 400 mV (2.03 V min) to 5.5 V, and maintains 0.5% output accuracy across –40°C to +125°C ambient with ≤400 mV max dropout - enabling direct use in low-voltage, space-constrained embedded systems.
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+ ADC reference applications |
| Tempco | 10 ppm/°C (0°C to 85°C), 20 ppm/°C (–40°C to 125°C) - enables ≤±2.16 mV drift over full industrial range |
| Dropout Voltage | 230 mV typical at 10 mA load - allows operation from 2.03 V input, compatible with single-cell LiFePO₄ or dual-cell alkaline supplies |
| Supply Current | 60 µA typical, ≤100 µA over temperature - minimizes quiescent power in always-on sensor nodes |
| Shutdown Current | 3 µA typical when EN = 0 V - extends battery life in intermittent-measurement systems |
| Output Drive | 20 mA max sink/source - directly drives SAR ADC reference inputs, DAC buffers, or op-amp bias networks without external gain stage |
| Noise (0.1–10 Hz) | 170 µVPP - supports 16-bit+ precision in low-frequency measurement front-ends |
Pinout & Package
SOT-23-5 (DBV) package: 2.90 mm × 1.60 mm body, 1.0 mm height, gull-wing leads. RoHS-compliant, lead-free, and halogen-free per TI specification.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - N/C | No-connect terminal | Must remain unconnected and floating; no internal connection - PCB pad may be omitted or left unmasked |
| 2 - GND | Analog ground reference | Primary return path for reference output and internal band-gap core; requires low-impedance connection to system AGND plane |
| 3 - EN | Enable control input | Active-high digital input; pulls device into 3 µA shutdown when <35% VIN, enables regulation when >65% VIN |
| 4 - VIN | Input supply rail | Accepts 2.03 V to 5.5 V; must be bypassed with ≥1 µF ceramic capacitor near pin to suppress PSRR degradation |
| 5 - VREF | Precision reference output | 1.8 V regulated output capable of sourcing/sinking up to 20 mA; requires local 1 µF ceramic COUT only if noise-sensitive loads present |
Key Features
| Feature | Design Value |
|---|---|
| EEPROM-trimmed CMOS band-gap | Enables post-assembly correction of tempco and initial accuracy - eliminates laser-trimming cost while matching bipolar reference performance |
| Enable-controlled shutdown | Reduces supply current from 60 µA to 3 µA, enabling micro-power sleep modes in portable data loggers and wireless sensors |
| 20 mA output drive | Eliminates need for external buffer op-amp in ADC reference circuits, reducing BOM count and board area in space-critical designs |
| Stable with ceramic capacitors | Supports low-ESR MLCCs (≥1 µF) on VIN and optional COUT - avoids tantalum or electrolytic capacitors, improving reliability and temperature range |
| AEC-Q100 Grade 1 qualified | Rated for –40°C to +125°C ambient operation with HBM ESD rating of ±2000 V - suitable for under-hood automotive sensor modules |
Applications
| Portable Data Acquisition | Automotive Sensor Conditioning |
|---|---|
Use Scenario: Battery-powered handheld multimeter acquiring 16-bit voltage measurements with <1 LSB error. IC Role / Device Role / Timing Role: Primary voltage reference for SAR ADC, providing stable 1.8 V reference with minimal thermal drift during field use. Use Value: 10 ppm/°C tempco and 170 µVPP low-frequency noise ensure measurement repeatability across temperature and time without recalibration. |
Use Scenario: Tire pressure monitoring system (TPMS) ECU measuring piezoresistive bridge output in engine bay. IC Role / Device Role / Timing Role: Precision reference for bridge amplifier and ADC, operating continuously at 125°C ambient. Use Value: AEC-Q100 Grade 1 qualification and 400 mV max dropout guarantee stable 1.8 V reference even as supply sags to 2.2 V during cranking. |
| Industrial PLC Analog Input Module | Medical Patient Monitor Front-End |
Use Scenario: DIN-rail mounted PLC module digitizing 4–20 mA loop signals with 0.1% total accuracy requirement. IC Role / Device Role / Timing Role: Reference source for isolated ΣΔ ADC, sharing common ground with signal conditioning circuitry. Use Value: ±0.1% initial accuracy and 50 ppm long-term stability over 1000 hrs meet IEC 61000-6-2 immunity and calibration interval requirements. |
Use Scenario: Portable ECG device amplifying microvolt-level cardiac signals with 24-bit resolution. IC Role / Device Role / Timing Role: Low-noise reference for instrumentation amplifier and ADC reference buffer. Use Value: 170 µVPP (0.1–10 Hz) noise and 20 mA drive capability support DC-coupled, high-gain analog signal chains without added noise sources. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REF3018AIDBZR | Fixed 1.8 V, 50 ppm/°C max tempco (–40°C to 125°C), 50 µA IQ, no enable pin, SOT-23-3 | Lacks shutdown control and has higher tempco; limited to always-on, ultra-low-power roles where enable is unnecessary | Select when board space is critical (3-pin vs 5-pin) and shutdown is not required; verify tempco impact on system accuracy budget |
| ADR3418ARJZ-R7 | 1.8 V, 10 ppm/°C max tempco, 120 µA IQ, no enable, SOT-23-5, ±0.1% initial accuracy, 10 mA output | Higher quiescent current, no enable function, lower output drive - unsuitable for battery-powered or high-current reference loads | Choose when superior long-term stability (20 ppm/1000 hrs) and tighter tempco spec are prioritized over power and drive capability |
Compared with REF3018AIDBZR and ADR3418ARJZ-R7, LM4132BMF-1.8/NOPB uniquely combines enable-controlled shutdown, 20 mA drive, and 10 ppm/°C tempco in a 5-pin SOT-23 - making it optimal for battery-operated, high-accuracy systems requiring dynamic power management and robust load driving.
Availability
LM4132BMF-1.8/NOPB is available at Aetrix Electronics and suitable for portable instrumentation, automotive sensor modules, and industrial PLC analog input modules requiring stable component supply, long-lifecycle support, and AEC-Q100 compliance.
Supply support for LM4132BMF-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 company headquartered in Dallas, Texas, designing and manufacturing analog, embedded processing, and logic ICs for industrial, automotive, and communications markets.
The LM4132 family was developed to deliver laser-trimmed reference accuracy using cost-effective CMOS EEPROM trimming - targeting high-precision data acquisition, test equipment, and safety-critical automotive subsystems.
FAQ
What is the maximum input voltage for LM4132BMF-1.8/NOPB?
The absolute maximum input voltage for LM4132BMF-1.8/NOPB is 6 V, but the recommended operating maximum is 5.5 V. Exceeding 5.5 V risks violating absolute maximum ratings and may degrade long-term reliability. The device functions down to VREF + 400 mV (2.03 V), making it suitable for low-input applications such as single-cell LiFePO₄ systems. Always use a ≥1 µF ceramic capacitor on VIN per TI layout guidelines.
Does LM4132BMF-1.8/NOPB require an output capacitor?
LM4132BMF-1.8/NOPB does not require an output capacitor for stability - it is designed to operate stably with no COUT. However, a 1 µF ceramic capacitor is recommended at the VREF pin when driving noisy or reactive loads (e.g., switched-capacitor ADCs) to reduce high-frequency noise and improve transient response. The datasheet explicitly states COUT is optional, unlike many older references that mandate minimum ESR or capacitance.
What grade does the 'B' in LM4132BMF-1.8/NOPB indicate?
The 'B' in LM4132BMF-1.8/NOPB denotes the B-grade accuracy specification: ±0.1% initial output voltage tolerance at 25°C and 20 ppm/°C maximum temperature coefficient over –40°C to +125°C. This grade balances high precision with cost-effectiveness - tighter than C/D/E grades but less stringent (and lower cost) than A-grade (±0.05%, 10 ppm/°C). All LM4132BMF-1.8/NOPB units are 100% tested to B-grade limits.
Can LM4132BMF-1.8/NOPB drive a 10 kΩ load directly?
Yes, LM4132BMF-1.8/NOPB can directly drive a 10 kΩ load with negligible error: at 1.8 V output, a 10 kΩ load draws only 180 µA - well within its 20 mA output capability and far below the 25 ppm/mA load regulation limit. Output voltage deviation remains <±0.0045% under this condition. For heavier loads (>5 mA), verify dropout margin and thermal rise per the 164.1°C/W RθJA spec.
Is LM4132BMF-1.8/NOPB qualified for automotive use?
Yes, LM4132BMF-1.8/NOPB is AEC-Q100 qualified (Grade 1) for automotive applications, with guaranteed operation from –40°C to +125°C ambient temperature and HBM ESD rating of ±2000 V. It meets stress test requirements for temperature cycling, humidity, and mechanical shock per AEC-Q100 Rev G. Note: While the base LM4132 family is qualified, always confirm part-specific qualification status via TI's official product folder or PPAP documentation for safety-critical deployments.
LM4132BMF-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
LM4132BMF-1.8/NOPB FAQ
1.How can I place an order for LM4132BMF-1.8/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4132BMF-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 LM4132BMF-1.8/NOPB reliable?
The price and inventory of LM4132BMF-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 LM4132BMF-1.8/NOPB is usually 5 days.
3.What payment methods are accepted for LM4132BMF-1.8/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4132BMF-1.8/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4132BMF-1.8/NOPB?
LM4132BMF-1.8/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4132BMF-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 LM4132BMF-1.8/NOPB?
For technical support, including LM4132BMF-1.8/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4132BMF-1.8/NOPB requirements.
6.How does Aetrix verify that LM4132BMF-1.8/NOPB is sourced from the original manufacturer or authorized distributors?
All LM4132BMF-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 LM4132BMF-1.8/NOPB meets industry standards.
7.What is the process for return or replacement of LM4132BMF-1.8/NOPB?
All LM4132BMF-1.8/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM4132BMF-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 LM4132BMF-1.8/NOPB part is unused and in its original packaging.
Return procedure for LM4132BMF-1.8/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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