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Texas Instruments LM4132BMF-4.1
- Part No.:
- LM4132BMF-4.1
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LM4132BMF-4.1.pdf
- Description:
- IC VREF SERIES 0.1% SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:3,741
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Product details
Overview
LM4132BMF-4.1 from Texas Instruments is a precision low-dropout (LDO) 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), and 60 µA quiescent current - used in high-resolution ADC/DAC biasing, portable instrumentation, and automotive sensor signal conditioning.
For engineers reviewing the LM4132BMF-4.1 datasheet, LM4132BMF-4.1 pinout, LM4132BMF-4.1 application, or LM4132BMF-4.1 equivalent, key selection criteria include dropout voltage (175 mV at 10 mA), enable-controlled shutdown (3 µA), load regulation (25 ppm/mA), and SOT-23-5 compatibility with ceramic capacitors only.
Technical Context
The LM4132BMF-4.1 uses EEPROM-trimmed CMOS bandgap architecture to achieve laser-trimmed bipolar-level precision without laser trimming, correcting curvature, tempco, and accuracy at package level to overcome plastic-package assembly shifts. It operates as a series reference, eliminating idle current waste inherent in shunt types.
Its enable pin supports active-high logic control (VIH = 65% VIN), allowing fast transition between 60 µA operating mode and 3 µA shutdown. The device sustains 20 mA output current without requiring an output capacitor or buffer amplifier - a key differentiator among LDO references.
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 using VREF = VDD/2 scaling |
| Initial Accuracy | ±0.1% (B-grade); guarantees ≤4.1 mV absolute error at 25°C for calibration-critical systems |
| Tempco | 10 ppm/°C (0°C to 85°C); contributes ≤0.34 mV drift over industrial range, supporting <0.01% system gain stability |
| Dropout Voltage | 175 mV at 10 mA load; allows operation from 4.271 V input, compatible with single-cell Li-ion or 5 V rails with margin |
| Quiescent Current | 60 µA typical; enables >1-year battery life in 10 µA sleep-mode systems with periodic wake-up sampling |
| Shutdown Current | 3 µA max; reduces standby power by 95% vs active mode, critical for always-on sensor nodes |
| Load Regulation | 25 ppm/mA; ensures ≤0.1 mV output shift across full 20 mA load range, preserving reference integrity under dynamic loads |
Pinout & Package
SOT-23-5 (DBV) package: 2.90 mm × 1.60 mm body, 0.95 mm height, gull-wing leads. RoHS-compliant, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - N/C | No-connect | Must remain unconnected; floating; no internal connection or function |
| 2 - GND | Ground reference | Primary return path for reference output and supply current; requires low-impedance PCB plane |
| 3 - EN | Enable input | Active-high digital control: VIH ≥ 65% VIN enables output; VIL ≤ 35% VIN disables output |
| 4 - VIN | Input supply | Accepts 4.496 V to 5.5 V (VREF + 400 mV min); must be bypassed with ≥1 µF ceramic capacitor |
| 5 - VREF | Reference output | 4.096 V precision source; drives up to 20 mA; stable without COUT but benefits from 1–10 nF local decoupling |
Key Features
| Feature | Design Value |
|---|---|
| EEPROM-trimmed CMOS bandgap | Eliminates post-assembly accuracy degradation in plastic SOT-23 packages, achieving 0.1% initial tolerance without laser trimming |
| Enable-controlled shutdown | Reduces supply current from 60 µA to 3 µA, enabling ultra-low-power duty-cycled operation in portable and remote sensors |
| Capacitor-free stability | Operates stably with low-ESR ceramic input capacitors only - no output capacitor required, saving board space and BOM cost |
| 20 mA output drive | Directly powers ADC reference inputs, op-amp bias networks, or small DACs without external buffers, simplifying analog front-ends |
| Automotive qualification | AEC-Q100 Grade 1 (–40°C to +125°C ambient) support confirmed for LM4132-Q1 variants; LM4132BMF-4.1 shares same SOT-23 DBV package and core design |
Applications
| High-Resolution Data Acquisition | Portable Battery-Powered Instrumentation |
|---|---|
Use Scenario: 16-bit SAR ADC in handheld multimeter requiring stable 4.096 V reference for full-scale accuracy. IC Role / Device Role / Timing Role: Primary voltage reference for ADC VREF pin, defining LSB size and gain calibration point. Use Value: 10 ppm/°C tempco and 0.1% initial accuracy ensure <0.02% total unadjusted error over –10°C to +50°C operating range. |
Use Scenario: Portable gas analyzer with microcontroller, electrochemical sensor, and 12-bit ADC running on coin cell. IC Role / Device Role / Timing Role: Precision bias source for sensor signal conditioning and ADC reference, enabled only during measurement cycles. Use Value: 3 µA shutdown current extends 220 mAh CR2032 battery life from 3 months to >2 years in 1-minute sampling interval. |
| Automotive Sensor Signal Conditioning | Precision Industrial Regulators |
Use Scenario: Engine coolant temperature sensor module in passenger vehicle requiring AEC-Q100 compliance and thermal stability. IC Role / Device Role / Timing Role: Reference for ratiometric RTD-to-digital conversion circuit, co-located with analog front-end ASIC. Use Value: Validated 125°C junction operation and 20 ppm/°C tempco over –40°C to +125°C ensure <0.05% gain error across full automotive ambient range. |
Use Scenario: Programmable DC bench power supply needing stable 4.096 V reference for DAC-controlled output voltage setting. IC Role / Device Role / Timing Role: Master reference for 16-bit DAC generating feedback setpoint; sourced from low-noise LDO. Use Value: 350 µVPP (0.1–10 Hz) low-frequency noise prevents DAC code dithering and improves output voltage resolution below 1 mV. |
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), 6 µA IQ, no enable pin, SOT-23-3 | Lacks enable control and has higher tempco; suited for always-on, ultra-low-power apps where shutdown is unnecessary | Select when minimizing quiescent current (<6 µA) is primary, and enable functionality is not required |
| ADR3440ARJZ-R7 | 4.096 V, 10 ppm/°C max tempco, 120 µA IQ, no enable, SOT-23-5, higher initial accuracy (±0.12%) but no shutdown mode | Higher supply current and no enable pin limit use in battery-powered cycling systems | Choose when long-term stability (15 ppm/1000 hrs) and lower noise (25 µVPP) outweigh need for shutdown capability |
Compared with REF3340AIDBVR and ADR3440ARJZ-R7, the LM4132BMF-4.1 uniquely balances ultra-low shutdown current (3 µA), precision tempco (10 ppm/°C), and integrated enable control in SOT-23-5 - making it optimal for portable, duty-cycled, and automotive-qualified systems demanding both accuracy and power agility.
Availability
LM4132BMF-4.1 is available at Aetrix Electronics and suitable for high-resolution data acquisition, portable instrumentation, and automotive sensor signal conditioning requiring stable component supply with traceable lot control and extended lifecycle support.
Supply support for LM4132BMF-4.1 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 and automotive-qualified components.
The LM4132 family was designed to deliver laser-trimmed reference performance in cost-effective CMOS technology for space-constrained, battery-sensitive, and thermally demanding applications - targeting instrumentation, test equipment, and automotive subsystems.
FAQ
What is the output voltage tolerance of the LM4132BMF-4.1 at 25°C?
The LM4132BMF-4.1 has a guaranteed initial output voltage tolerance of ±0.1% at 25°C (B-grade specification), meaning its 4.096 V output falls within 4.0919 V to 4.1001 V under nominal conditions. This tolerance is production-tested and applies before thermal or long-term drift effects.
Does the LM4132BMF-4.1 require an output capacitor for stability?
No, the LM4132BMF-4.1 is internally compensated and stable without an output capacitor - a key advantage over many voltage references. A 1–10 nF ceramic capacitor may be added locally to reduce high-frequency noise, but it is not required for loop stability per TI's validated design guidelines.
What is the minimum input voltage required for the LM4132BMF-4.1 to maintain regulation?
The LM4132BMF-4.1 requires a minimum input voltage of VREF + 400 mV = 4.496 V to maintain regulation at full load (20 mA). At 10 mA load, its dropout voltage is 175 mV, so 4.271 V input suffices - verified across –40°C to +125°C per Electrical Characteristics Table 6.11.
How does the enable pin of the LM4132BMF-4.1 function?
The LM4132BMF-4.1 enable pin (Pin 3) is active-high: output is enabled when voltage exceeds 65% of VIN, and disabled when below 35% of VIN. In shutdown, supply current drops to ≤3 µA. No pull-up or pull-down is required - the pin is CMOS-compatible and internally biased.
Is the LM4132BMF-4.1 qualified for automotive applications?
The LM4132BMF-4.1 is the commercial-grade variant; however, it shares identical SOT-23-5 (DBV) packaging, electrical architecture, and thermal specifications with the AEC-Q100 Grade 1 qualified LM4132QDBVR-4.1. Its design basis and process flow support automotive use, though formal qualification applies only to the -Q1 suffix part.
LM4132BMF-4.1 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):
- 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
LM4132BMF-4.1 FAQ
1.How can I place an order for LM4132BMF-4.1 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4132BMF-4.1 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-4.1 reliable?
The price and inventory of LM4132BMF-4.1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4132BMF-4.1 is usually 5 days.
3.What payment methods are accepted for LM4132BMF-4.1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4132BMF-4.1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4132BMF-4.1?
LM4132BMF-4.1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4132BMF-4.1 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-4.1?
For technical support, including LM4132BMF-4.1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4132BMF-4.1 requirements.
6.How does Aetrix verify that LM4132BMF-4.1 is sourced from the original manufacturer or authorized distributors?
All LM4132BMF-4.1 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-4.1 meets industry standards.
7.What is the process for return or replacement of LM4132BMF-4.1?
All LM4132BMF-4.1 units undergo pre-shipment inspection (PSI). If there is an issue with LM4132BMF-4.1, 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-4.1 part is unused and in its original packaging.
Return procedure for LM4132BMF-4.1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM4132BMF-4.1 Tags
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TL431AIDBZR
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