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Texas Instruments LM4132CMFX-3.0
- Part No.:
- LM4132CMFX-3.0
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LM4132CMFX-3.0.pdf
- Description:
- IC VREF SERIES 0.2% SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:4,411
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Product details
Overview
LM4132CMFX-3.0 from Texas Instruments is a precision low-dropout (LDO) series voltage reference IC delivering a stable 3.0 V output with 0.05% initial accuracy, 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, supports up to 20 mA load current, and features an enable pin for 3 µA shutdown mode - ideal for high-accuracy ADC/DAC biasing in portable instrumentation.
For engineers reviewing the LM4132CMFX-3.0 datasheet, LM4132CMFX-3.0 pinout, LM4132CMFX-3.0 application, or LM4132CMFX-3.0 equivalent, key selection criteria include dropout voltage at 10 mA (175 mV typ), line regulation (70 ppm/V), load regulation (25 ppm/mA), thermal hysteresis (75 ppm), and compatibility with low-ESR ceramic capacitors without requiring an output buffer.
Technical Context
The LM4132CMFX-3.0 uses EEPROM-trimmed CMOS band-gap architecture to achieve laser-trimmed bipolar-level precision while overcoming plastic-package assembly shifts. Its curvature, tempco, and accuracy are corrected at package level - enabling A-grade performance (0.05%, 10 ppm/°C) in cost-effective SOT-23 packaging.
Unlike shunt references, it draws only 60 µA quiescent current and delivers full 20 mA output without external buffering. The enable pin controls operation between active mode (60 µA) and shutdown (3 µA), and the device remains stable with no output capacitor required - simplifying layout in space-constrained systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 3.0 V ±0.05% (A-grade initial accuracy at 25°C) |
| Tempco | 10 ppm/°C (0°C to 85°C), enabling <±0.25 mV drift over industrial range |
| Dropout Voltage | 175 mV (typ at 10 mA load), allowing operation from 3.175 V input |
| Quiescent Current | 60 µA (active), 3 µA (shutdown), critical for battery runtime in portable designs |
| Load Regulation | 25 ppm/mA (0–20 mA), ensuring <±0.15 mV output shift across full load range |
| Line Regulation | 70 ppm/V (VREF + 0.4 V to 5.5 V), limiting input sensitivity to <±0.21 mV per volt |
| Output Noise | 285 µVPP (0.1–10 Hz), suitable for 16-bit+ data acquisition systems |
Pinout & Package
SOT-23 (DBV) 5-pin plastic package, 2.90 mm × 1.60 mm body size, with exposed pad not electrically connected.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - N/C | No-connect | Must be left floating; no internal connection |
| 2 - GND | Ground reference | Primary return path for reference and supply currents |
| 3 - EN | Enable control input | Active-high logic: ≥65% VIN enables, ≤35% VIN disables (3 µA shutdown) |
| 4 - VIN | Input supply | Accepts 3.4 V to 5.5 V; must exceed VREF by ≥400 mV for regulation |
| 5 - VREF | Precision output | 3.0 V reference source; drives up to 20 mA with <0.5% error |
Key Features
| Feature | Design Value |
|---|---|
| EEPROM-trimmed CMOS band-gap | Enables A-grade accuracy (0.05%) and low tempco (10 ppm/°C) without laser trimming |
| Enable-controlled shutdown | Reduces supply current from 60 µA to 3 µA, extending battery life in intermittent-use systems |
| No output capacitor required | Eliminates external COUT, reducing BOM count and PCB area in compact layouts |
| 20 mA output drive capability | Directly powers ADC reference inputs, DAC buffers, or small analog circuitry without op-amp buffering |
| Stable with low-ESR ceramics | Supports modern 0402/0603 X7R/X5R capacitors on input (CIN required), easing layout |
Applications
| Portable Data Loggers | Industrial PLC Analog Input Modules |
|---|---|
|
Use Scenario: Battery-powered field instruments acquiring sensor data with 16-bit SAR ADCs. IC Role / Device Role / Timing Role: Provides stable 3.0 V reference for ADC conversion, rejecting supply ripple and thermal drift. Use Value: Enables ±0.5 LSB accuracy over –40°C to +85°C with <285 µVPP noise and 10 ppm/°C tempco. |
Use Scenario: DIN-rail mounted PLC modules conditioning 4–20 mA sensor signals into digital values. IC Role / Device Role / Timing Role: Supplies precision reference for multi-channel 24-bit ΣΔ ADCs in isolated analog front-ends. Use Value: Maintains <±0.05% initial accuracy and <75 ppm thermal hysteresis after repeated temperature cycling. |
| Automotive Cabin Control Units | Medical Patient Monitoring Devices |
|
Use Scenario: In-vehicle HVAC and infotainment control units requiring AEC-Q100 Grade 1 compliance. IC Role / Device Role / Timing Role: Reference source for microcontroller ADCs measuring thermistor and potentiometer inputs. Use Value: Qualified to –40°C to +125°C ambient, with HBM ESD rating of ±2000 V and 20 mA drive for local signal conditioning. |
Use Scenario: Portable ECG and SpO₂ monitors where low power and long-term stability are critical. IC Role / Device Role / Timing Role: Bias reference for ultra-low-noise instrumentation amplifiers and ADCs. Use Value: Delivers 285 µVPP (0.1–10 Hz) noise and 50 ppm long-term stability (1000 hrs), meeting IEC 60601-1 signal integrity requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REF3030AIDBZR | Fixed 3.0 V, 50 ppm/°C max tempco, 50 µA IQ, no enable pin, SOT-23-3 | Lacks shutdown control; lower drive (25 mA), higher noise (35 µVRMS) | Choose when enable functionality is unnecessary and lower quiescent current is prioritized over tempco. |
| ADR3430ARJZ-R7 | 3.0 V, 10 ppm/°C max, 60 µA IQ, no enable, SOT-23-5 (pin 1 = NC, pin 3 = GND) | Same tempco grade but lacks enable; requires external shutdown circuitry for low-power modes | Prefer when TI supply chain continuity is required and system-level enable control is already implemented externally. |
Compared with REF3030AIDBZR and ADR3430ARJZ-R7, the LM4132CMFX-3.0 uniquely integrates enable control, matches ADR3430's tempco, and offers superior load regulation (25 ppm/mA vs 35 ppm/mA), making it optimal for battery-powered systems needing both precision and dynamic power management.
Availability
LM4132CMFX-3.0 is available at Aetrix Electronics and suitable for portable instrumentation, industrial analog I/O modules, and automotive cabin electronics requiring stable component supply with guaranteed long-term availability and traceable sourcing.
Supply support for LM4132CMFX-3.0 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 broad industrial portfolio coverage.
The LM4132 family was designed for high-accuracy, low-power reference needs in portable, automotive, and industrial systems - delivering laser-trimmed performance using programmable CMOS architecture in SOT-23 packaging.
FAQ
What is the minimum input voltage required for stable operation of the LM4132CMFX-3.0?
The LM4132CMFX-3.0 requires VIN ≥ VREF + 400 mV for regulation, so minimum input is 3.4 V. At 10 mA load, typical dropout is 175 mV, meaning 3.175 V input sustains regulation - but 3.4 V ensures margin across temperature and process variation. Operation below 3.4 V risks output deviation exceeding 0.5%.
Does the LM4132CMFX-3.0 require an output capacitor (COUT) for stability?
No, the LM4132CMFX-3.0 is internally compensated and stable without an output capacitor. COUT is optional and may be added only for additional noise filtering - the device delivers full 20 mA output directly, eliminating need for external buffering or stabilization components.
What is the enable pin logic threshold for the LM4132CMFX-3.0?
The LM4132CMFX-3.0 EN pin has CMOS-compatible thresholds: VIH ≥ 65% of VIN (e.g., ≥2.21 V at VIN = 3.4 V) enables operation; VIL ≤ 35% of VIN (e.g., ≤1.19 V at VIN = 3.4 V) places the device in 3 µA shutdown. Thresholds track VIN, ensuring robust operation across input voltage range.
How does the LM4132CMFX-3.0 compare to shunt references in terms of power efficiency?
As a series reference, the LM4132CMFX-3.0 draws only 60 µA quiescent current regardless of load - unlike shunt references that must idle full load current (e.g., 20 mA) even at no load. This yields >99% power savings in low-duty-cycle systems, making LM4132CMFX-3.0 ideal for battery longevity.
Is the LM4132CMFX-3.0 qualified for automotive applications?
The LM4132CMFX-3.0 is not the automotive-grade variant; that is the LM4132QDBVR-3.0 (AEC-Q100 Grade 1). LM4132CMFX-3.0 is commercial-grade (–40°C to +125°C junction), suitable for industrial and portable equipment - but lacks automotive qualification documentation, stress testing, and part-number traceability required for automotive use.
LM4132CMFX-3.0 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):
- 3V
- Voltage - Output (Max):
- -
- Current - Output:
- 20 mA
- Tolerance:
- ±0.2%
- Temperature Coefficient:
- 20ppm/°C
- Noise - 0.1Hz to 10Hz:
- 285µVp-p
- Noise - 10Hz to 10kHz:
- -
- Voltage - Input:
- 3.4V ~ 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
LM4132CMFX-3.0 FAQ
1.How can I place an order for LM4132CMFX-3.0 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4132CMFX-3.0 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 LM4132CMFX-3.0 reliable?
The price and inventory of LM4132CMFX-3.0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4132CMFX-3.0 is usually 5 days.
3.What payment methods are accepted for LM4132CMFX-3.0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4132CMFX-3.0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4132CMFX-3.0?
LM4132CMFX-3.0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4132CMFX-3.0 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 LM4132CMFX-3.0?
For technical support, including LM4132CMFX-3.0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4132CMFX-3.0 requirements.
6.How does Aetrix verify that LM4132CMFX-3.0 is sourced from the original manufacturer or authorized distributors?
All LM4132CMFX-3.0 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 LM4132CMFX-3.0 meets industry standards.
7.What is the process for return or replacement of LM4132CMFX-3.0?
All LM4132CMFX-3.0 units undergo pre-shipment inspection (PSI). If there is an issue with LM4132CMFX-3.0, 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 LM4132CMFX-3.0 part is unused and in its original packaging.
Return procedure for LM4132CMFX-3.0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM4132CMFX-3.0 Tags
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