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Texas Instruments LM4132EMF-2.0
- Part No.:
- LM4132EMF-2.0
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LM4132EMF-2.0.pdf
- Description:
- IC VREF SERIES 0.5% SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:4,314
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Product details
Overview
LM4132EMF-2.0 from Texas Instruments is a precision low-dropout (LDO) series voltage reference IC delivering 2.048 V output with ±0.05% initial accuracy (Grade A), 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 LM4132EMF-2.0 datasheet, LM4132EMF-2.0 pinout, LM4132EMF-2.0 application, or LM4132EMF-2.0 equivalent, this page provides verified electrical specs, SOT-23-5 package layout, enable-controlled shutdown mode, dropout behavior at 175 mV (10 mA load), and validated alternatives for precision analog systems requiring stable 2.048 V references.
Technical Context
The LM4132EMF-2.0 implements a CMOS band-gap architecture with EEPROM-based curvature and tempco correction, enabling laser-trimmed-level accuracy without laser trimming. Its enable pin controls a 3-µA shutdown state, and it operates with input voltages as low as VREF + 400 mV (i.e., ≥2.448 V) up to 5.5 V.
Unlike shunt references, it draws only 60 µA supply current under load and delivers up to 20 mA output without requiring an output capacitor or buffer amplifier - critical for space-constrained, battery-powered designs where low quiescent power and minimal external components are mandatory.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.048 V nominal; enables precise 12-bit DAC/ADC full-scale calibration (e.g., 2.048 V = 1 LSB × 4096) |
| Initial Accuracy | ±0.05% (Grade A); ensures ≤1.024 mV absolute error at 25°C for metrology-grade measurement front-ends |
| Tempco | 10 ppm/°C (0°C to 85°C); contributes ≤0.085 mV drift over industrial temperature range |
| Dropout Voltage | 175 mV at 10 mA load; allows operation from 2.448 V input - compatible with single-cell Li-ion or 3.3 V LDO rails |
| Supply Current | 60 µA typical; supports >1-year battery life in 10-µA average-power portable data loggers |
| Shutdown Current | 3 µA max; enables ultra-low-power sleep modes in wake-on-event sensor nodes |
| Load Regulation | 25 ppm/mA (0–20 mA); maintains <0.051 mV output shift across full load range |
Pinout & Package
SOT-23-5 (DBV) package: 2.90 mm × 1.60 mm body, 0.95 mm height, gull-wing leads. RoHS-compliant, surface-mountable.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - N/C | No-connect terminal | Must be left floating; no internal connection - avoids unintended parasitic coupling |
| 2 - GND | Analog ground reference | Primary return path for reference output and internal band-gap core; requires low-impedance PCB plane |
| 3 - EN | Enable control input | Active-high logic: VIH ≥65% VIN enables output; VIL ≤35% VIN enters 3-µA shutdown |
| 4 - VIN | Input supply | Accepts 2.448 V to 5.5 V; supplies internal regulator and output stage; bypass capacitor required |
| 5 - VREF | Precision reference output | 2.048 V source capable of sourcing 20 mA; low-noise (190 µVPP, 0.1–10 Hz) for sensitive analog circuits |
Key Features
| Feature | Design Value |
|---|---|
| EEPROM-trimmed curvature compensation | Eliminates need for laser trimming; achieves 0.05% accuracy and 10 ppm/°C tempco at package level |
| Enable-controlled shutdown | Reduces supply current from 60 µA to 3 µA - extends battery life by >10× in intermittent-sampling systems |
| No output capacitor required | Stable with ceramic capacitors only on input; simplifies layout and reduces BOM count in space-limited PCBs |
| Low dropout (175 mV @ 10 mA) | Enables direct regulation from 2.5 V or 3.3 V rails without intermediate step-down, minimizing power loss |
| Automotive qualification (AEC-Q100 Grade 1) | Rated for –40°C to +125°C ambient; qualified for engine control, ADAS sensors, and infotainment power domains |
Applications
| Portable Data Acquisition | Automotive Sensor Signal Conditioning |
|---|---|
|
Use Scenario: Handheld multimeter acquiring 16-bit voltage measurements with auto-ranging. IC Role / Device Role / Timing Role: Provides stable 2.048 V reference for SAR ADC and programmable gain amplifier offset calibration. Use Value: Enables ±0.005% full-scale accuracy over 0–50°C without recalibration, meeting IEC 61010 Class II requirements. |
Use Scenario: Tire pressure monitoring system (TPMS) ECU measuring piezoresistive bridge output. IC Role / Device Role / Timing Role: Supplies excitation voltage and reference for ratiometric bridge-to-digital conversion. Use Value: 10 ppm/°C tempco ensures <0.1% pressure reading drift across –40°C to +105°C vehicle operating range. |
| Industrial Process Controller | Battery-Powered IoT Node |
|
Use Scenario: 4–20 mA loop transmitter with HART modulation in factory automation. IC Role / Device Role / Timing Role: Precision reference for DAC generating analog output and for internal ADC monitoring supply rail. Use Value: 60 µA quiescent current and 20 mA drive capability allow single-supply operation from 3.3 V rail with margin for HART sine wave superposition. |
Use Scenario: Wireless environmental sensor node logging temperature/humidity every 5 minutes using coin cell. IC Role / Device Role / Timing Role: Reference for ultra-low-power ADC during active measurement bursts; disabled between samples. Use Value: 3 µA shutdown current extends CR2032 battery life to >3 years at 5-minute sampling interval. |
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; suitable only for always-on, cost-sensitive designs | Select when board space is extremely constrained and continuous operation is acceptable |
| ADR3420ARJZ-R7 | 2.048 V, 10 ppm/°C max tempco, 120 µA IQ, no enable, SOT-23-5 | Higher quiescent current and no shutdown; superior long-term stability (15 ppm/1000 hrs vs 50 ppm) | Prefer for high-stability lab equipment where power is not limiting and enable control is unnecessary |
Compared with REF3020AIDBZR and ADR3420ARJZ-R7, the LM4132EMF-2.0 uniquely combines Grade-A accuracy, ultra-low IQ, enable functionality, and automotive qualification - making it optimal for battery-powered, safety-aware, and thermally demanding embedded systems.
Availability
LM4132EMF-2.0 is available at Aetrix Electronics and suitable for portable instrumentation, automotive sensor modules, and industrial process controllers requiring stable component supply with guaranteed long-term availability and traceable lot history.
Supply support for LM4132EMF-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 leader specializing in analog and embedded processing technologies, with decades of expertise in precision analog IC design and automotive-grade qualification.
The LM4132 family was engineered to deliver laser-trimmed performance in cost-effective CMOS processes - targeting high-accuracy, low-power, and space-constrained applications in test equipment, medical devices, and automotive electronics.
FAQ
What is the exact output voltage tolerance of the LM4132EMF-2.0 at 25°C?
The LM4132EMF-2.0 is a Grade A device with ±0.05% initial output voltage accuracy at 25°C, meaning its 2.048 V nominal output falls within 2.046976 V to 2.049024 V. This specification is 100% production tested and applies to the LM4132EMF-2.0 part number specifically, per TI's SNVS372G datasheet Section 6.6.
Does the LM4132EMF-2.0 require an output capacitor for stability?
No, the LM4132EMF-2.0 is internally compensated and stable without an output capacitor - a key differentiator from most LDO references. The datasheet explicitly states COUT is optional, and the device remains stable with only the required CIN (input capacitor). This eliminates output capacitance-related phase margin risks and saves PCB area in the LM4132EMF-2.0 design.
What is the minimum input voltage required for the LM4132EMF-2.0 to maintain regulation?
The LM4132EMF-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, its dropout voltage is 175 mV (per Section 6.6), so 2.223 V suffices - but the guaranteed operational minimum across all conditions remains 2.448 V as specified in Recommended Operating Conditions.
Is the LM4132EMF-2.0 qualified for automotive applications?
Yes, the LM4132EMF-2.0 is AEC-Q100 Grade 1 qualified, rated for ambient temperatures from –40°C to +125°C, and meets HBM ESD Level 2 (±2000 V). It is identical in qualification to the LM4132-Q1 variant and is approved for use in automotive powertrain, chassis, and body electronics per TI's official documentation.
How does the enable pin of the LM4132EMF-2.0 function in practice?
The EN pin of the LM4132EMF-2.0 is a logic-controlled input: applying ≥65% of VIN enables the reference output and 60 µA operation; applying ≤35% of VIN disables output and reduces current to 3 µA. It is not a push-pull driver - external pull-up/pull-down is required for defined state during power-up or MCU reset, as confirmed in Section 5 and Figure 3 of the LM4132EMF-2.0 datasheet.
LM4132EMF-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:
- ±0.5%
- Temperature Coefficient:
- 30ppm/°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
LM4132EMF-2.0 FAQ
1.How can I place an order for LM4132EMF-2.0 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4132EMF-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 LM4132EMF-2.0 reliable?
The price and inventory of LM4132EMF-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 LM4132EMF-2.0 is usually 5 days.
3.What payment methods are accepted for LM4132EMF-2.0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4132EMF-2.0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4132EMF-2.0?
LM4132EMF-2.0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4132EMF-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 LM4132EMF-2.0?
For technical support, including LM4132EMF-2.0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4132EMF-2.0 requirements.
6.How does Aetrix verify that LM4132EMF-2.0 is sourced from the original manufacturer or authorized distributors?
All LM4132EMF-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 LM4132EMF-2.0 meets industry standards.
7.What is the process for return or replacement of LM4132EMF-2.0?
All LM4132EMF-2.0 units undergo pre-shipment inspection (PSI). If there is an issue with LM4132EMF-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 LM4132EMF-2.0 part is unused and in its original packaging.
Return procedure for LM4132EMF-2.0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM4132EMF-2.0 Tags
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