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Texas Instruments LM4132BMF-2.0
- Part No.:
- LM4132BMF-2.0
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LM4132BMF-2.0.pdf
- Description:
- IC VREF SERIES 0.1% SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,403
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Product details
Overview
LM4132BMF-2.0 from Texas Instruments is a precision low-dropout series voltage reference IC delivering 2.048 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 LM4132BMF-2.0 datasheet, LM4132BMF-2.0 pinout, LM4132BMF-2.0 application, or LM4132BMF-2.0 equivalent, key selection factors include dropout voltage (175 mV at 10 mA), enable-controlled shutdown (3 µA), stability with ceramic capacitors, and SOT-23-5 packaging for space-constrained PCBs.
Technical Context
The LM4132BMF-2.0 implements a CMOS band-gap architecture with EEPROM-based curvature and tempco correction, enabling laser-trimmed reference performance in cost-effective plastic packaging. It operates as a series reference with internal pass element and enable-controlled bias circuitry.
Its functional modes include active regulation (EN ≥ 65% VIN) and ultra-low-power shutdown (EN ≤ 35% VIN), with no output capacitor required for stability. Input range is VREF + 400 mV to 5.5 V, supporting single-supply operation from 2.448 V to 5.5 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.048 V ±0.1% (B grade, 25°C); enables precise 12-bit DAC/ADC full-scale calibration |
| Tempco | 10 ppm/°C (0°C to 85°C); ensures <±0.085% output drift over industrial temperature range |
| Dropout Voltage | 175 mV at 10 mA load; allows operation from 2.448 V input - critical for low-voltage battery systems |
| Supply Current | 60 µA typical; supports >1-year runtime in 10 µA-quiescent IoT sensor nodes |
| Shutdown Current | 3 µA max; enables deep-sleep power gating in portable measurement devices |
| Load Regulation | 25 ppm/mA (0–20 mA); maintains <±50 µV error across full output current range |
| Noise (0.1–10 Hz) | 190 µVPP; suitable for 16-bit SAR ADC reference without external filtering |
Pinout & Package
SOT-23-5 package (2.90 mm × 1.60 mm), surface-mount, RoHS-compliant. Pin 1 is NC (no connect), pin 2 is GND, pin 3 is EN, pin 4 is VIN, pin 5 is VREF.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (NC) | No-connect | Must remain unconnected; floating - no routing or soldering required |
| 2 (GND) | Analog ground reference | Primary return path for reference output and internal bias; requires low-impedance PCB plane |
| 3 (EN) | Digital enable input | Active-high logic control: ≥65% VIN enables regulation; ≤35% VIN enters 3 µA shutdown |
| 4 (VIN) | Input supply | Accepts 2.448 V to 5.5 V; must be decoupled with ≥1 µF ceramic capacitor near pin |
| 5 (VREF) | Precision output | 2.048 V regulated source; drives up to 20 mA; stable without output capacitor |
Key Features
| Feature | Design Value |
|---|---|
| EEPROM-trimmed CMOS band-gap | Eliminates assembly-induced voltage shift - achieves 0.1% accuracy without laser trimming |
| Enable-controlled shutdown | Reduces quiescent current from 60 µA to 3 µA, extending battery life in intermittent-sampling systems |
| Capacitor-free stability | Operates stably with only input capacitor (CIN); removes BOM cost and layout area for COUT |
| Low-noise 0.1–10 Hz output | 190 µVPP noise enables direct use with 16-bit data converters without post-filtering |
| Automotive-qualified option | LM4132-Q1 variant meets AEC-Q100 Grade 1 (–40°C to +125°C ambient) for under-hood sensors |
Applications
| Portable Multimeter Front-End | Automotive Oxygen Sensor Signal Chain |
|---|---|
Use Scenario: Handheld digital multimeter measuring DC voltage with 0.1% accuracy over –10°C to 50°C ambient. IC Role / Device Role / Timing Role: Primary 2.048 V reference for 16-bit sigma-delta ADC and auto-ranging attenuator calibration. Use Value: 10 ppm/°C tempco and 0.1% initial accuracy ensure full-scale error remains <±0.05% across operating temperature range. |
Use Scenario: Exhaust gas oxygen sensor interface in engine control unit requiring stable bias under thermal cycling. IC Role / Device Role / Timing Role: Precision excitation reference for Nernst cell heater and analog front-end gain-setting resistors. Use Value: Shutdown mode (3 µA) reduces system standby power; 175 mV dropout enables operation from 3.3 V rail during cold cranking. |
| Industrial Data Logger | Medical ECG Analog Front-End |
Use Scenario: Battery-powered environmental logger recording temperature/humidity with 12-bit resolution over 6-month deployment. IC Role / Device Role / Timing Role: Reference for SAR ADC sampling thermistor and humidity sensor bridges. Use Value: 60 µA supply current and enable control allow microcontroller to power down LM4132BMF-2.0 between 10-second samples, cutting reference power by 95%. |
Use Scenario: Portable ECG device acquiring biopotential signals with >80 dB SNR requirement. IC Role / Device Role / Timing Role: Low-noise 2.048 V reference for 16-bit ADC digitizing amplified lead-II differential signal. Use Value: 190 µVPP (0.1–10 Hz) noise contributes <0.3 LSB error - within clinical-grade 16-bit resolution budget. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REF3020AIDBZR | Fixed 2.048 V, 50 ppm/°C max tempco, 50 µA IQ, no enable pin, SOT-23-3 | Lacks shutdown control and has higher tempco; requires external enable circuitry for power gating | Choose when board space is constrained (3-pin vs 5-pin) and shutdown is not required |
| ADR3420ARJZ-R7 | 2.048 V, 10 ppm/°C max, 120 µA IQ, no enable, SOT-23-5 | Higher quiescent current and no enable function; superior long-term stability (15 ppm/1k hrs) | Choose when ultra-low drift (<15 ppm) outweighs power savings from shutdown mode |
Compared with REF3020AIDBZR and ADR3420ARJZ-R7, the LM4132BMF-2.0 uniquely combines 10 ppm/°C tempco, 3 µA shutdown, and 20 mA drive in a single SOT-23-5 package - making it optimal for battery-powered, thermally demanding, and high-current reference applications where both precision and power control are mandatory.
Availability
LM4132BMF-2.0 is available at Aetrix Electronics and suitable for portable instrumentation, automotive sensor modules, and industrial data loggers requiring stable component supply with guaranteed long-term availability and traceable sourcing.
Supply support for LM4132BMF-2.0 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 ICs and automotive-grade components.
The LM4132 family was designed to deliver laser-trimmed reference accuracy using cost-effective CMOS+EEPROM architecture - targeting high-reliability, low-power, and space-constrained applications in industrial, medical, and automotive systems.
FAQ
What is the output voltage tolerance of the LM4132BMF-2.0 at 25°C?
The LM4132BMF-2.0 has an initial output voltage tolerance of ±0.1% at 25°C, corresponding to ±2.05 mV around the nominal 2.048 V output. This B-grade specification is 100% production tested and applies under recommended operating conditions (VIN = 5 V, ILOAD = 0 mA). The LM4132BMF-2.0 maintains this accuracy across its specified temperature range with additional tempco-related drift.
Does the LM4132BMF-2.0 require an output capacitor for stability?
No, the LM4132BMF-2.0 is internally compensated and stable without an output capacitor - a key differentiator from many LDO references. Only an input capacitor (CIN ≥ 1 µF ceramic) is required per the datasheet. Adding COUT may improve PSRR but is not necessary for loop stability. This simplifies layout and reduces BOM count in the LM4132BMF-2.0 design.
What is the minimum input voltage required for the LM4132BMF-2.0 to maintain regulation?
The LM4132BMF-2.0 requires a minimum input voltage of VREF + 400 mV, i.e., 2.448 V, to maintain regulation at full load (20 mA). At 10 mA load, the typical dropout is 175 mV, meaning 2.223 V input sustains regulation. Below the dropout threshold, output voltage drops linearly with input; the LM4132BMF-2.0 does not latch or shut down - it simply ceases regulation.
How does the enable pin of the LM4132BMF-2.0 function?
The EN pin on the LM4132BMF-2.0 is a logic-controlled input: applying ≥65% of VIN enables regulation, while ≤35% of VIN places the device in 3 µA shutdown mode. It is not a rail-to-rail compatible input - thresholds scale with VIN. For fixed 3.3 V systems, a simple resistor divider or GPIO can reliably drive EN. The LM4132BMF-2.0 exhibits no glitch or overshoot during enable transitions.
Is the LM4132BMF-2.0 qualified for automotive applications?
The LM4132BMF-2.0 itself is not automotive-qualified; however, the pin-compatible LM4132BQMF-2.0 (Q1 variant) is AEC-Q100 Grade 1 qualified (–40°C to +125°C ambient) and shares identical electrical specs. Both use the same SOT-23-5 package and EEPROM-trimmed architecture. For automotive designs, LM4132BQMF-2.0 is the approved replacement - the LM4132BMF-2.0 is intended for industrial and commercial use.
LM4132BMF-2.0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- SC-74A, SOT-753
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Reference Type:
- Series
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 2.048V
- Voltage - Output (Max):
- -
- Current - Output:
- 20 mA
- Tolerance:
- ±0.1%
- Temperature Coefficient:
- 20ppm/°C
- Noise - 0.1Hz to 10Hz:
- 190µVp-p
- Noise - 10Hz to 10kHz:
- -
- Voltage - Input:
- 2.448V ~ 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-2.0 FAQ
1.How can I place an order for LM4132BMF-2.0 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4132BMF-2.0 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-2.0 reliable?
The price and inventory of LM4132BMF-2.0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4132BMF-2.0 is usually 5 days.
3.What payment methods are accepted for LM4132BMF-2.0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4132BMF-2.0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4132BMF-2.0?
LM4132BMF-2.0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4132BMF-2.0 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-2.0?
For technical support, including LM4132BMF-2.0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4132BMF-2.0 requirements.
6.How does Aetrix verify that LM4132BMF-2.0 is sourced from the original manufacturer or authorized distributors?
All LM4132BMF-2.0 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-2.0 meets industry standards.
7.What is the process for return or replacement of LM4132BMF-2.0?
All LM4132BMF-2.0 units undergo pre-shipment inspection (PSI). If there is an issue with LM4132BMF-2.0, 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-2.0 part is unused and in its original packaging.
Return procedure for LM4132BMF-2.0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM4132BMF-2.0 Tags
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