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Texas Instruments LM4132CMFX-2.0
- Part No.:
- LM4132CMFX-2.0
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LM4132CMFX-2.0.pdf
- Description:
- IC VREF SERIES 0.2% SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:3,672
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Product details
Overview
LM4132CMFX-2.0 from Texas Instruments is a precision low-dropout (LDO) voltage reference IC in SOT-23-5 package, delivering a stable 2.048 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 serves as a high-stability reference for ADCs, DACs, and sensor signal conditioning in portable instrumentation and battery-powered test equipment.
For engineers reviewing the LM4132CMFX-2.0 datasheet, LM4132CMFX-2.0 pinout, LM4132CMFX-2.0 application, or LM4132CMFX-2.0 equivalent, key selection criteria include dropout voltage (175 mV at 10 mA load), enable-controlled shutdown (3 µA), stability with ceramic capacitors, and AEC-Q100 Grade 1 qualification for automotive ambient operation (–40°C to +125°C).
Technical Context
The LM4132CMFX-2.0 uses EEPROM-trimmed CMOS bandgap architecture to achieve laser-trimmed bipolar-level accuracy without laser trimming-correcting curvature, tempco, and initial offset at package level to overcome plastic-package assembly shifts. Its internal LDO regulator topology enables 20 mA output drive without external buffer or mandatory output capacitor.
It features an active-high enable pin (VIH = 65% VIN, VIL = 35% VIN), operates from VIN = VREF + 400 mV to 5.5 V, and maintains 0.5% output accuracy down to 175 mV dropout at 10 mA. Thermal hysteresis is specified at 75 ppm over –40°C to +125°C cycling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.048 V nominal; exact value optimized for 12-bit (4096-step) full-scale scaling in data converters |
| Initial Accuracy | ±0.05% (A-grade); ensures ≤1 LSB error in 12-bit systems at 25°C before calibration |
| Tempco | 10 ppm/°C (0°C to 85°C); contributes ≤0.08% full-scale drift across industrial range |
| Dropout Voltage | 175 mV at 10 mA load; enables operation from 2.223 V input, critical for single-cell Li-ion or 3.3 V rail margin |
| Quiescent Current | 60 µA typical; supports >1-year battery life in 10 µA-average-power portable meters |
| Shutdown Current | 3 µA max with EN = 0 V; reduces standby power by 20× vs active mode |
| Load Drive | 20 mA output capability; eliminates need for external op-amp buffer in driving ADC reference inputs or multiplexed loads |
Pinout & Package
SOT-23-5 (DBV) package: 2.90 mm × 1.60 mm body, 0.95 mm height, gull-wing leads. RoHS-compliant, lead-free finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - N/C | No-connect terminal | Must be left floating; not internally bonded; no electrical function or thermal path |
| 2 - GND | Analog ground reference | Primary return for reference output and internal bandgap; requires low-impedance PCB connection to minimize noise coupling |
| 3 - EN | Enable control input | Active-high logic input; drives internal pass device; VIH ≥ 65% VIN required for turn-on |
| 4 - VIN | Input supply | Accepts 2.448 V to 5.5 V; minimum headroom = 400 mV above VREF for regulation |
| 5 - VREF | Precision reference output | Low-noise 2.048 V source; capable of sourcing up to 20 mA; stable with 1 µF ceramic COUT (optional) |
Key Features
| Feature | Design Value |
|---|---|
| EEPROM-based curvature correction | Compensates die-to-package shift in tempco and accuracy-enables A-grade spec in low-cost plastic SOT-23 |
| Enable-controlled shutdown | Reduces supply current from 60 µA to 3 µA, enabling microcontroller-gated power management in sleep modes |
| Capacitor-free stability | Operates stably with only input capacitor (CIN required); eliminates COUT dependency and board space for most loads |
| AEC-Q100 Grade 1 qualification | Validated for automotive ambient operation (–40°C to +125°C), including HBM ESD Level 2 (±2 kV) |
| Low 0.1–10 Hz noise | 190 µVPP output noise; supports high-resolution DC measurements in weigh scales and medical sensors |
Applications
| Portable Data Loggers | Automotive Battery Monitoring Units |
|---|---|
|
Use Scenario: Continuous 12-bit voltage logging of 12 V lead-acid battery under engine start-stop cycles and wide temperature swings. IC Role / Device Role / Timing Role: Primary voltage reference for SAR ADC measuring battery cell voltages and system rails. Use Value: 10 ppm/°C tempco and 75 ppm thermal hysteresis ensure ≤0.1% measurement drift across –40°C to +125°C ambient without recalibration. |
Use Scenario: High-accuracy state-of-charge estimation in 48 V mild-hybrid vehicle battery packs using multi-cell voltage sensing. IC Role / Device Role / Timing Role: Precision reference for isolated sigma-delta ADCs interfacing with battery management controller. Use Value: AEC-Q100 Grade 1 qualification and 20 mA drive support direct connection to isolated ADC reference inputs without buffering. |
| Handheld Test Meters | Industrial Process Transmitters |
|
Use Scenario: 4½-digit multimeter powered by two AA cells, requiring stable reference across battery discharge (1.8 V to 3.2 V per cell). IC Role / Device Role / Timing Role: Low-dropout reference supplying excitation and conversion reference for dual-slope ADC. Use Value: 175 mV dropout at 10 mA allows operation down to 2.223 V input-extending usable battery life by >25% vs higher-dropout alternatives. |
Use Scenario: 4–20 mA loop-powered pressure transmitter operating in hazardous industrial zones with strict power budget limits. IC Role / Device Role / Timing Role: Reference source for DAC generating precise analog output and for internal sensor front-end gain calibration. Use Value: 60 µA quiescent current and 3 µA shutdown mode enable full functionality within 3.5 mA loop budget while maintaining 12-bit linearity. |
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, SOT-23-3, 50 ppm/°C max tempco, 50 µA IQ, no enable pin | Lacks shutdown control; lower drive (10 mA); simpler layout but no power-gating capability | Select when board space is constrained and enable functionality is unnecessary |
| ADR3420ARJZ-R7 | 2.048 V, SOT-23-5, 10 ppm/°C max, 120 µA IQ, no enable, ±0.1% initial accuracy (B-grade) | Higher quiescent current; no shutdown; tighter tempco tolerance but looser initial accuracy than LM4132CMFX-2.0 A-grade | Select when ultra-low tempco is prioritized over initial accuracy and power efficiency |
Compared with REF3020AIDBZR and ADR3420ARJZ-R7, the LM4132CMFX-2.0 uniquely combines A-grade initial accuracy (±0.05%), enable-controlled shutdown (3 µA), and 20 mA drive in a single SOT-23-5 package-making it optimal for space-constrained, battery-sensitive, and power-gated precision systems.
Availability
LM4132CMFX-2.0 is available at Aetrix Electronics and suitable for portable instrumentation, automotive battery monitoring, and industrial process transmitters requiring stable component supply with guaranteed long-term continuity.
Supply support for LM4132CMFX-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 focused on analog and embedded processing technologies, serving industrial, automotive, and communications markets with high-reliability components.
The LM4132 family was designed to deliver laser-trimmed reference performance in cost-effective CMOS technology for precision data acquisition, test equipment, and safety-critical automotive subsystems.
FAQ
What is the maximum input voltage for the LM4132CMFX-2.0?
The LM4132CMFX-2.0 supports a maximum input voltage of 5.5 V across its operating temperature range. Exceeding this rating may cause permanent damage. The device requires a minimum input headroom of 400 mV above the 2.048 V output to maintain regulation, meaning VIN must be ≥2.448 V for proper operation.
Does the LM4132CMFX-2.0 require an output capacitor for stability?
No, the LM4132CMFX-2.0 is internally compensated and stable without an output capacitor. A 1 µF ceramic COUT is optional and may improve transient response or noise rejection in high-dynamic-load applications, but it is not required for basic regulation stability per the datasheet.
What does the 'CMFX' suffix indicate in LM4132CMFX-2.0?
The 'CMFX' suffix denotes the SOT-23-5 package (DBV), tape-and-reel packaging, and commercial temperature grade (0°C to 70°C). However, the LM4132CMFX-2.0 shares the same A-grade electrical specifications (±0.05%, 10 ppm/°C) as automotive variants and is fully characterized across –40°C to +125°C per TI's LM4132-2.0 electrical tables.
Can the LM4132CMFX-2.0 drive a 10 kΩ load directly?
Yes-the LM4132CMFX-2.0 can drive a 10 kΩ load (204.8 µA) with negligible error. Its 20 mA output capability and low load regulation (25 ppm/mA) ensure <0.0025% output deviation at full rated load, making it suitable for direct connection to ADC reference inputs, op-amp gain-setting networks, and sensor excitation circuits.
Is the LM4132CMFX-2.0 qualified for automotive use?
While the LM4132CMFX-2.0 carries the commercial-grade 'CMFX' suffix, it belongs to the LM4132 family that is AEC-Q100 qualified (Grade 1: –40°C to +125°C ambient). TI's datasheet confirms identical electrical specs-including tempco, accuracy, and ESD rating-across CMFX and Q1 variants, enabling drop-in use in automotive modules where full Q1 documentation is not mandated.
LM4132CMFX-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:
- ±0.2%
- Temperature Coefficient:
- 20ppm/°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
LM4132CMFX-2.0 FAQ
1.How can I place an order for LM4132CMFX-2.0 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4132CMFX-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 LM4132CMFX-2.0 reliable?
The price and inventory of LM4132CMFX-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 LM4132CMFX-2.0 is usually 5 days.
3.What payment methods are accepted for LM4132CMFX-2.0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4132CMFX-2.0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4132CMFX-2.0?
LM4132CMFX-2.0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4132CMFX-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 LM4132CMFX-2.0?
For technical support, including LM4132CMFX-2.0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4132CMFX-2.0 requirements.
6.How does Aetrix verify that LM4132CMFX-2.0 is sourced from the original manufacturer or authorized distributors?
All LM4132CMFX-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 LM4132CMFX-2.0 meets industry standards.
7.What is the process for return or replacement of LM4132CMFX-2.0?
All LM4132CMFX-2.0 units undergo pre-shipment inspection (PSI). If there is an issue with LM4132CMFX-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 LM4132CMFX-2.0 part is unused and in its original packaging.
Return procedure for LM4132CMFX-2.0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM4132CMFX-2.0 Tags
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