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Texas Instruments LM4132DMFX-4.1/NOPB
- Part No.:
- LM4132DMFX-4.1/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LM4132DMFX-4.1/NOPB.pdf
- Description:
- IC VREF SERIES 0.4% SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:4,879
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Product details
Overview
LM4132DMFX-4.1/NOPB from Texas Instruments is a precision low-dropout (LDO) 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 60 µA quiescent current. It operates from VIN = VREF + 400 mV to 5.5 V and supports up to 20 mA load current, enabling use in high-resolution ADC/DAC biasing and portable instrumentation.
For engineers reviewing the LM4132DMFX-4.1/NOPB datasheet, LM4132DMFX-4.1/NOPB pinout, LM4132DMFX-4.1/NOPB application, or LM4132DMFX-4.1/NOPB equivalent, key selection criteria include dropout voltage at 10 mA (175 mV typ), enable-controlled 3 µA shutdown mode, stability with low-ESR ceramic capacitors, and SOT-23-5 package compatibility for space-constrained PCB layouts.
Technical Context
The LM4132DMFX-4.1/NOPB implements a CMOS band-gap architecture with EEPROM-based curvature and tempco correction, achieving laser-trimmed bipolar reference performance at lower cost. Its enable pin provides digital on/off control without external circuitry, and it requires only an input capacitor (CIN) - no output capacitor (COUT) needed for stability.
This device functions as a series reference, eliminating idle current waste inherent in shunt references. Its 400 mV max dropout across –40°C to 125°C and 25 ppm/mA load regulation support battery-powered systems where supply voltage sags under load, such as handheld test equipment and automotive sensor signal conditioning.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 4.096 V ±0.05% (A-grade); enables precise 12-bit DAC/ADC full-scale calibration |
| Tempco | 10 ppm/°C (0°C–85°C); ensures ≤±0.85 mV drift over industrial temperature range |
| Quiescent Current | 60 µA typ; extends battery life in always-on monitoring nodes |
| Dropout Voltage | 175 mV typ at 10 mA; allows operation from 4.271 V input (e.g., single Li-ion cell) |
| Enable Threshold | VIL ≤35% VIN, VIH ≥65% VIN; compatible with 1.8 V/3.3 V logic without level shifters |
| Output Noise | 350 µVPP (0.1–10 Hz); suitable for 16-bit SAR ADC reference without additional filtering |
| Long-Term Stability | 50 ppm (1000 hrs); reduces recalibration frequency in field-deployed instruments |
Pinout & Package
LM4132DMFX-4.1/NOPB uses the SOT-23-5 (DBV) package (2.90 mm × 1.60 mm), with pin 1 unconnected (N/C), pin 2 as GND, pin 3 as EN, pin 4 as VIN, and pin 5 as VREF. The N/C pin must remain floating per datasheet specification.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (N/C) | No-connect terminal | Must be left floating; not internally bonded - no routing or soldering required |
| 2 (GND) | Analog ground reference | Low-impedance return path for reference output; requires dedicated ground plane tie |
| 3 (EN) | Digital enable input | Active-high control: drives VREF into 3 µA shutdown when pulled low |
| 4 (VIN) | Input supply rail | Accepts 4.496 V to 5.5 V; minimum headroom defined by dropout spec |
| 5 (VREF) | Precision reference output | Delivers regulated 4.096 V; capable of sourcing up to 20 mA into resistive loads |
Key Features
| Feature | Design Value |
|---|---|
| EEPROM-trimmed CMOS band-gap | Eliminates post-assembly accuracy shift - achieves 0.05% initial tolerance without laser trimming |
| Enable-controlled shutdown | Reduces supply current from 60 µA to 3 µA, cutting standby power by 95% in intermittent-sampling systems |
| No output capacitor required | Stable with only CIN (input cap); simplifies layout and reduces BOM count in size-sensitive designs |
| Automotive-qualified option (Q1) | LM4132-Q1 variant meets AEC-Q100 Grade 1 (–40°C to +125°C), supporting engine control and ADAS sensors |
| Low ESR ceramic capacitor compatible | Works with standard 1 µF X7R MLCCs - avoids costly tantalum or polymer caps in cost-sensitive applications |
Applications
| Portable Data Acquisition | Automotive Sensor Signal Conditioning |
|---|---|
Use Scenario: Handheld multimeter acquiring 16-bit ADC samples from thermocouple amplifiers. IC Role / Device Role / Timing Role: Provides stable 4.096 V reference for ADC full-scale calibration and gain-setting resistor bias. Use Value: 10 ppm/°C tempco and 350 µVPP noise ensure <±1 LSB error across –10°C to 50°C operating range. | Use Scenario: Engine coolant temperature sensor interface in Tier-1 powertrain module. IC Role / Device Role / Timing Role: Supplies precision bias to op-amp front-end and ADC reference input in harsh-temperature environment. Use Value: AEC-Q100 qualification and 400 mV max dropout allow direct connection to 5 V domain while surviving cold-crank transients. |
| Industrial PLC Analog Input Module | Battery-Powered Medical Monitor |
Use Scenario: 4–20 mA loop-powered I/O card digitizing pressure transducer outputs. IC Role / Device Role / Timing Role: Generates accurate 4.096 V reference for ratiometric measurement and DAC feedback control. Use Value: 20 mA output drive supports multiple parallel ADCs and buffer stages without external amplification. | Use Scenario: Wearable ECG patch performing real-time analog front-end biasing and ADC referencing. IC Role / Device Role / Timing Role: Delivers ultra-low-noise, low-power reference for 12-bit delta-sigma ADC sampling at 1 kSPS. Use Value: 60 µA quiescent current and enable pin extend coin-cell battery life to >12 months in sleep-active cycling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REF3040AIDBZR | Fixed 4.096 V output; 50 ppm/°C tempco (max); no enable pin; 50 µA IQ | Lacks shutdown mode; higher tempco limits use in wide-temperature industrial enclosures | Select when lowest quiescent current is critical and enable control is unnecessary |
| ADR3440ARJZ-R7 | 4.096 V output; 10 ppm/°C tempco; no enable; 120 µA IQ; SOT-23-5 | Higher supply current reduces battery life; same tempco and accuracy grade as LM4132DMFX-4.1/NOPB | Choose when TI supply chain constraints exist and identical performance with different enable behavior is acceptable |
Compared with REF3040AIDBZR and ADR3440ARJZ-R7, the LM4132DMFX-4.1/NOPB uniquely combines A-grade 0.05% accuracy, 10 ppm/°C tempco, and integrated enable functionality in SOT-23-5 - enabling both precision and power-gated operation where alternatives require external logic or sacrifice one parameter.
Availability
LM4132DMFX-4.1/NOPB is available at Aetrix Electronics and suitable for portable instrumentation, automotive sensor interfaces, industrial PLC analog input modules, and battery-powered medical monitors requiring stable component supply with guaranteed long-term availability.
Supply support for LM4132DMFX-4.1/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 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 performance using cost-effective CMOS+EEPROM architecture - targeting high-accuracy data acquisition, test equipment, and safety-critical automotive subsystems.
FAQ
What is the maximum load current supported by the LM4132DMFX-4.1/NOPB?
The LM4132DMFX-4.1/NOPB delivers up to 20 mA of output current while maintaining specified accuracy and regulation. This capability eliminates the need for external buffer amplifiers in most 12–16 bit data acquisition systems. At 20 mA, dropout remains within 400 mV across –40°C to 125°C, and load regulation is 25 ppm/mA - ensuring predictable performance under varying load conditions.
Does the LM4132DMFX-4.1/NOPB require an output capacitor for stability?
No, the LM4132DMFX-4.1/NOPB is internally compensated and stable without an output capacitor. Only an input capacitor (CIN) is required per the datasheet. This simplifies layout, reduces bill-of-materials cost, and improves reliability in space-constrained applications such as handheld test gear and wearable medical devices where the LM4132DMFX-4.1/NOPB is commonly deployed.
What is the enable pin logic threshold for the LM4132DMFX-4.1/NOPB?
The LM4132DMFX-4.1/NOPB enable pin has a rail-to-rail compatible threshold: VIH ≥65% of VIN and VIL ≤35% of VIN, specified over –40°C to 125°C. This allows direct interfacing with 1.8 V, 3.3 V, or 5 V logic families without level-shifting circuitry. When EN is low, the LM4132DMFX-4.1/NOPB enters 3 µA shutdown mode, making it ideal for duty-cycled sensing applications.
Is the LM4132DMFX-4.1/NOPB qualified for automotive applications?
The LM4132DMFX-4.1/NOPB itself is not AEC-Q100 qualified; however, the pin-compatible LM4132-Q1 family includes automotive-grade variants (e.g., LM4132QDBVR41). Those parts meet AEC-Q100 Grade 1 (–40°C to +125°C ambient) and HBM ESD Level 2. For non-automotive industrial or medical use, the LM4132DMFX-4.1/NOPB provides identical electrical specs and SOT-23-5 packaging.
What is the long-term stability specification for the LM4132DMFX-4.1/NOPB?
The LM4132DMFX-4.1/NOPB exhibits 50 ppm maximum long-term stability after 1000 hours of operation at 25°C. This parameter reflects output voltage drift due to aging effects and is measured under controlled thermal conditions. In field applications like calibration equipment or laboratory instruments, this stability supports extended recalibration intervals and contributes to overall system measurement repeatability over time.
LM4132DMFX-4.1/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):
- 4.096V
- Voltage - Output (Max):
- -
- Current - Output:
- 20 mA
- Tolerance:
- ±0.4%
- 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
LM4132DMFX-4.1/NOPB FAQ
1.How can I place an order for LM4132DMFX-4.1/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4132DMFX-4.1/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 LM4132DMFX-4.1/NOPB reliable?
The price and inventory of LM4132DMFX-4.1/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4132DMFX-4.1/NOPB is usually 5 days.
3.What payment methods are accepted for LM4132DMFX-4.1/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4132DMFX-4.1/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4132DMFX-4.1/NOPB?
LM4132DMFX-4.1/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4132DMFX-4.1/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 LM4132DMFX-4.1/NOPB?
For technical support, including LM4132DMFX-4.1/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4132DMFX-4.1/NOPB requirements.
6.How does Aetrix verify that LM4132DMFX-4.1/NOPB is sourced from the original manufacturer or authorized distributors?
All LM4132DMFX-4.1/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 LM4132DMFX-4.1/NOPB meets industry standards.
7.What is the process for return or replacement of LM4132DMFX-4.1/NOPB?
All LM4132DMFX-4.1/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM4132DMFX-4.1/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 LM4132DMFX-4.1/NOPB part is unused and in its original packaging.
Return procedure for LM4132DMFX-4.1/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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