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Texas Instruments LM4132EMFX-4.1
- Part No.:
- LM4132EMFX-4.1
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LM4132EMFX-4.1.pdf
- Description:
- IC VREF SERIES 0.5% SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,147
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Product details
Overview
LM4132EMFX-4.1 from Texas Instruments is a precision low-dropout series voltage reference IC delivering a stable 4.096 V output with 0.05% initial accuracy (A-grade), 10 ppm/°C temperature coefficient (0°C to 85°C), and 20 mA output current capability in a 5-pin SOT-23 package. It operates from VIN = VREF + 400 mV up to 5.5 V and supports shutdown via an enable pin, making it suitable for high-accuracy ADC/DAC biasing in portable instrumentation.
For engineers reviewing the LM4132EMFX-4.1 datasheet, LM4132EMFX-4.1 pinout, LM4132EMFX-4.1 application, or LM4132EMFX-4.1 equivalent, key selection criteria include its guaranteed 4.096 V output tolerance, ultra-low 60 µA quiescent current, 175 mV dropout at 10 mA load, compatibility with ceramic capacitors, and automotive-grade variants (LM4132-Q1) for extended temperature operation.
Technical Context
The LM4132EMFX-4.1 uses EEPROM-trimmed CMOS band-gap architecture to achieve laser-trimmed bipolar reference performance at lower cost. Its curvature, tempco, and initial accuracy are corrected at package level to mitigate assembly-induced shifts-critical for maintaining precision after plastic packaging.
This device functions as a three-terminal series reference with active enable control, requiring only an input capacitor (CIN) and optionally an output capacitor (COUT). Unlike shunt references, it draws only 60 µA quiescent current and delivers full 20 mA load without external buffering, enabling direct drive of SAR ADC reference inputs and precision regulators.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 4.096 V ±0.05% (A-grade), enabling exact 12-bit full-scale scaling for 5-V-supplied ADCs |
| Initial Accuracy | ±0.05% (LM4132A grade), eliminating need for system-level calibration in metrology-grade designs |
| Tempco | 10 ppm/°C (0°C to 85°C), ensuring ≤±0.85 mV drift over industrial temperature range |
| Dropout Voltage | 175 mV at 10 mA load, allowing operation from 4.271 V input - ideal for single-cell Li-ion or 4.5-V rail systems |
| Quiescent Current | 60 µA typical, supporting >1-year battery life in always-on sensor nodes with periodic wake-up |
| Shutdown Current | 3 µA max when EN = 0 V, enabling ultra-low-power sleep modes in portable data loggers |
| Noise (0.1–10 Hz) | 350 µVPP, low enough for 16-bit ADC applications without additional filtering |
Pinout & Package
SOT-23 (DBV) 5-pin plastic package, 2.90 mm × 1.60 mm body size, surface-mount compatible with standard reflow profiles.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | N/C | No-connect pin; must be left floating - not internally bonded |
| 2 | GND | Analog ground reference; requires low-impedance connection to system AGND plane |
| 3 | EN | Digital enable input; asserts output when VIH ≥65% VIN, disables output when VIL ≤35% VIN |
| 4 | VIN | Input supply pin; accepts 4.496 V to 5.5 V (VREF + 400 mV min); bypass with ≥1 µF ceramic capacitor |
| 5 | VREF | Precision 4.096 V output; drives ADC reference inputs, DAC bias, or feedback networks directly |
Key Features
| Feature | Design Value |
|---|---|
| EEPROM-based trimming | Corrects curvature, tempco, and initial accuracy at package level - eliminates post-assembly calibration |
| Low dropout (175 mV) | Enables use with 4.5-V rails or single Li-ion cells while maintaining regulation under 10 mA load |
| Enable-controlled shutdown | Reduces supply current from 60 µA to 3 µA, extending battery life in duty-cycled measurement systems |
| Stable with ceramic capacitors | Eliminates need for tantalum or electrolytic output caps - reduces BOM count and improves reliability |
| AEC-Q100 Grade 1 qualified | Validated for –40°C to +125°C ambient operation - suitable for automotive engine control and ADAS sensors |
Applications
| Portable Data Acquisition | Automotive Sensor Signal Conditioning |
|---|---|
Use Scenario: Battery-powered handheld multimeter acquiring 16-bit voltage readings with <1 LSB error. IC Role / Device Role / Timing Role: Provides stable 4.096 V reference for SAR ADC, rejecting supply ripple and thermal drift. Use Value: Enables true 16-bit resolution without gain/offset calibration due to 0.05% initial accuracy and 10 ppm/°C tempco. |
Use Scenario: Engine coolant temperature sensor interface in powertrain ECU operating at 125°C ambient. IC Role / Device Role / Timing Role: Supplies precision bias to op-amp front-end and ADC reference input under wide-temp conditions. Use Value: AEC-Q100 Grade 1 qualification and 20 ppm/°C tempco (–40°C to 125°C) ensure consistent 12-bit measurement accuracy across full automotive range. |
| Medical Patient Monitor Analog Front-End | Industrial PLC Analog Input Module |
Use Scenario: Low-noise ECG signal chain requiring <5 µVPP reference noise contribution over 0.1–10 Hz. IC Role / Device Role / Timing Role: High-stability 4.096 V reference for 24-bit delta-sigma ADC driving isolated SPI interface. Use Value: 350 µVPP (0.1–10 Hz) noise and 75 ppm thermal hysteresis meet IEC 60601-1 analog integrity requirements. |
Use Scenario: 4–20 mA loop-powered transmitter with local 12-bit ADC measuring RTD or thermocouple signals. IC Role / Device Role / Timing Role: Precision reference for ratiometric measurement and internal DAC feedback. Use Value: 20 mA output drive capability allows direct excitation of 2-wire RTDs without buffer op-amps, reducing component count and layout area. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REF5040IDBVR | 4.096 V, 0.05% initial accuracy, 3 ppm/°C tempco, 100 µA IQ, no enable pin | Lower noise (12 µVPP) and superior tempco, but lacks shutdown and higher quiescent current | Choose REF5040IDBVR for ultra-high-precision lab equipment where lowest drift dominates; avoid where enable control or low IQ is required. |
| ADR4540BRZ | 4.096 V, 0.02% initial accuracy, 2 ppm/°C tempco, SOIC-8, no enable, 850 µA IQ | Higher accuracy and stability, but larger package, higher power, and no shutdown function | Choose ADR4540BRZ for benchtop test gear needing best-in-class long-term stability; reject for space-constrained or battery-powered designs. |
Compared with REF5040IDBVR and ADR4540BRZ, the LM4132EMFX-4.1 uniquely balances ultra-low IQ (60 µA), integrated enable (3 µA shutdown), SOT-23 footprint, and A-grade precision - making it optimal for portable, automotive, and cost-sensitive industrial systems where power, size, and feature integration are co-prioritized.
Availability
LM4132EMFX-4.1 is available at Aetrix Electronics and suitable for portable instrumentation, automotive sensor modules, and industrial PLC analog input circuits requiring stable component supply with guaranteed long-term availability and traceable sourcing.
Supply support for LM4132EMFX-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 design.
The LM4132 family was engineered to deliver laser-trimmed reference performance using cost-effective EEPROM-trimmed CMOS processes - targeting high-accuracy data acquisition, test equipment, and automotive sensing applications.
FAQ
What is the maximum input voltage for the LM4132EMFX-4.1?
The LM4132EMFX-4.1 supports a maximum input voltage of 5.5 V, with minimum input defined as VREF + 400 mV (i.e., 4.496 V). Operation within this range ensures specified accuracy, dropout, and thermal performance across the full –40°C to +125°C junction temperature range.
Does the LM4132EMFX-4.1 require an output capacitor for stability?
No, the LM4132EMFX-4.1 is stable without an output capacitor and does not require one for basic operation. A COUT capacitor is optional and may be added to reduce high-frequency noise or improve transient response - but it is not needed for loop stability per TI's characterization.
What grade (A–E) does the 'E' in LM4132EMFX-4.1 indicate?
The 'E' in LM4132EMFX-4.1 denotes the device grade - specifically, the E-grade variant with ±0.5% initial output voltage accuracy and 30 ppm/°C temperature coefficient (–40°C to +125°C). This contrasts with the A-grade version (LM4132AMFX-4.1), which offers ±0.05% accuracy and 10 ppm/°C tempco.
Can the LM4132EMFX-4.1 drive a 10 kΩ load directly?
Yes - the LM4132EMFX-4.1 can drive a 10 kΩ load (409.6 µA) with negligible error. Its 20 mA output current capability and low load regulation (25 ppm/mA) ensure <0.01% deviation even at full rated load, making it suitable for driving ADC references, op-amp bias networks, and DAC feedback paths.
Is the LM4132EMFX-4.1 qualified for automotive applications?
The base LM4132EMFX-4.1 is not AEC-Q100 qualified; however, the pin-compatible LM4132QCEMFX-4.1 (C-grade) and LM4132QDEMFX-4.1 (D-grade) variants are AEC-Q100 Grade 1 qualified for –40°C to +125°C operation. These automotive versions share identical electrical specs except for tighter tempco and qualification testing.
LM4132EMFX-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:
- ±0.5%
- Temperature Coefficient:
- 30ppm/°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
LM4132EMFX-4.1 FAQ
1.How can I place an order for LM4132EMFX-4.1 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4132EMFX-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 LM4132EMFX-4.1 reliable?
The price and inventory of LM4132EMFX-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 LM4132EMFX-4.1 is usually 5 days.
3.What payment methods are accepted for LM4132EMFX-4.1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4132EMFX-4.1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4132EMFX-4.1?
LM4132EMFX-4.1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4132EMFX-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 LM4132EMFX-4.1?
For technical support, including LM4132EMFX-4.1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4132EMFX-4.1 requirements.
6.How does Aetrix verify that LM4132EMFX-4.1 is sourced from the original manufacturer or authorized distributors?
All LM4132EMFX-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 LM4132EMFX-4.1 meets industry standards.
7.What is the process for return or replacement of LM4132EMFX-4.1?
All LM4132EMFX-4.1 units undergo pre-shipment inspection (PSI). If there is an issue with LM4132EMFX-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 LM4132EMFX-4.1 part is unused and in its original packaging.
Return procedure for LM4132EMFX-4.1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM4132EMFX-4.1 Tags
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