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Texas Instruments LM4132EMFX-2.0/NOPB
- Part No.:
- LM4132EMFX-2.0/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LM4132EMFX-2.0/NOPB.pdf
- Description:
- IC VREF SERIES 0.5% SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,954
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Product details
Overview
LM4132EMFX-2.0/NOPB from Texas Instruments is a precision low-dropout (LDO) series voltage reference IC delivering a stable 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 LM4132EMFX-2.0/NOPB datasheet, LM4132EMFX-2.0/NOPB pinout, LM4132EMFX-2.0/NOPB application, or LM4132EMFX-2.0/NOPB equivalent, key selection criteria include dropout voltage (175 mV at 10 mA), enable-controlled shutdown (3 µA), load regulation (25 ppm/mA), and SOT-23-5 compatibility with ceramic capacitors only.
Technical Context
The LM4132EMFX-2.0/NOPB implements a CMOS band-gap architecture with EEPROM-based curvature and tempco correction, enabling laser-trimmed-level precision without laser trimming. It operates as a series reference with internal error amplifier and pass element, supporting up to 20 mA output current without requiring an output capacitor.
Its enable pin provides digital control of output state, with VIH = 65% VIN and VIL = 35% VIN thresholds, and it maintains regulation over input voltages from VREF + 400 mV (2.448 V) to 5.5 V - making it suitable for single-cell Li-ion and dual-cell alkaline battery-powered systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.048 V ±0.05% (Grade A) - matches common 12-bit DAC/ADC full-scale scaling ratios (e.g., 2.048 V = 1 LSB × 4096) |
| Tempco | 10 ppm/°C (0°C to 85°C) - ensures ≤0.085% output drift across industrial temperature range |
| Dropout Voltage | 175 mV at 10 mA - enables operation from 2.448 V input, compatible with 2.5 V or 2.7 V LDOs or batteries |
| Quiescent Current | 60 µA - supports >1-year battery life in 10 µA sleep-mode systems with periodic wake-up sampling |
| Shutdown Current | 3 µA - reduces system standby power by >95% vs active mode when EN = low |
| Load Regulation | 25 ppm/mA - guarantees <50 µV shift over 0–20 mA load, critical for ratiometric sensor bridges |
| Noise (0.1–10 Hz) | 190 µVPP - limits quantization uncertainty to <0.1 LSB in 16-bit 2.048 V-range ADCs |
Pinout & Package
LM4132EMFX-2.0/NOPB uses the DBV (SOT-23-5) package: 2.90 mm × 1.60 mm body, 0.95 mm height, gull-wing leads. Pin 1 is marked with dot; Pin 3 is EN (active-high); Pin 1 is N/C (no connect, must float).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (N/C) | No-connect terminal | Internally unconnected; must remain floating - no PCB trace or pull-up/down |
| Pin 2 (GND) | Analog ground reference | Low-impedance return path for reference core; requires dedicated ground plane tie near device |
| Pin 3 (EN) | Digital enable input | Active-high logic control; drives output to high-Z when low; VIH = 65% VIN, VIL = 35% VIN |
| Pin 4 (VIN) | Input supply | Accepts 2.448 V to 5.5 V; bypass with ≥1 µF ceramic capacitor close to pin |
| Pin 5 (VREF) | Precision output | 2.048 V source; stable into 20 mA load; no output capacitor required per design |
Key Features
| Feature | Design Value |
|---|---|
| EEPROM-trimmed curvature compensation | Eliminates need for external calibration; achieves 0.05% initial accuracy without laser trimming |
| Enable-controlled shutdown | Reduces supply current to 3 µA - enables microcontroller-gated power cycling in data loggers |
| Capacitor-free output stability | Operates stably with no COUT required - saves board space and avoids capacitor aging drift |
| Low-ESR ceramic input support | Stable with standard X7R/X5R 1 µF MLCCs - avoids costly tantalum or polymer capacitors |
| Automotive-grade qualification | AEC-Q100 Grade 1 (–40°C to +125°C) - validated for under-hood and ADAS sensor modules |
Applications
| Portable Data Acquisition | Automotive Sensor Signal Chain |
|---|---|
Use Scenario: Handheld multimeter sampling thermocouple or RTD signals using 16-bit SAR ADC. IC Role / Device Role / Timing Role: Provides ratiometric reference for ADC and excitation current source. Use Value: 10 ppm/°C tempco and 190 µVPP noise ensure <±0.01% measurement accuracy across –10°C to +50°C operating range. | Use Scenario: Tire pressure monitoring system (TPMS) ECU measuring piezoresistive pressure sensor bridge. IC Role / Device Role / Timing Role: Supplies stable 2.048 V excitation and ADC reference in ultra-low-power wake-on-event mode. Use Value: 3 µA shutdown current extends coin-cell lifetime beyond 7 years; AEC-Q100 Grade 1 ensures reliability at 125°C ambient. |
| Industrial Process Controller | Battery-Powered Medical Monitor |
Use Scenario: Loop-powered 4–20 mA transmitter with HART modulation, using 24 V rail-derived 2.048 V reference. IC Role / Device Role / Timing Role: Precision voltage source for DAC output stage and analog front-end gain calibration. Use Value: 25 ppm/mA load regulation prevents output error during HART AC signal injection (±1 mA peak). | Use Scenario: Wearable ECG patch acquiring 24-bit delta-sigma ADC data from dry electrodes. IC Role / Device Role / Timing Role: Low-noise, low-drift reference for ADC and programmable gain amplifier. Use Value: 190 µVPP (0.1–10 Hz) noise contributes <0.5 µV RMS to total input-referred noise, preserving SNR > 100 dB. |
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 | 2.048 V, 0.1% initial accuracy, 50 ppm/°C tempco, no enable pin, 50 µA IQ | Lacks shutdown control; higher tempco increases drift in wide-temp environments | Choose when enable functionality is unnecessary and cost sensitivity outweighs drift performance |
| ADR3420ARJZ-R7 | 2.048 V, 0.1% initial accuracy, 10 ppm/°C tempco, no enable, 120 µA IQ, 300 mV dropout | Higher quiescent current and dropout limit battery runtime and low-voltage operation | Prefer when ultra-low noise (12 µVRMS) is prioritized over power and dropout constraints |
Compared with REF3020AIDBZR and ADR3420ARJZ-R7, LM4132EMFX-2.0/NOPB uniquely combines Grade A accuracy, enable control, and sub-200 mV dropout - enabling longer battery life and tighter thermal drift in space-constrained, wide-temperature embedded systems.
Availability
LM4132EMFX-2.0/NOPB is available at Aetrix Electronics and suitable for portable instrumentation, automotive sensor modules, and industrial process transmitters requiring stable component supply with guaranteed long-term continuity.
Supply support for LM4132EMFX-2.0/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 headquartered in Dallas, Texas, designing and manufacturing analog and embedded processing chips for industrial, automotive, and consumer markets.
The LM4132 family was developed to deliver laser-trimmed precision in cost-effective CMOS processes - targeting high-accuracy data acquisition, battery-powered test equipment, and safety-critical automotive sensing applications.
FAQ
What is the maximum input voltage rating for LM4132EMFX-2.0/NOPB?
The absolute maximum input voltage for LM4132EMFX-2.0/NOPB is 6 V. However, the recommended operating maximum is 5.5 V. Exceeding 5.5 V may degrade long-term reliability or trigger overvoltage protection in adjacent circuitry. The device functions correctly down to VIN = VREF + 400 mV (2.448 V), making LM4132EMFX-2.0/NOPB ideal for single-supply battery interfaces where headroom is constrained.
Does LM4132EMFX-2.0/NOPB require an output capacitor for stability?
No, LM4132EMFX-2.0/NOPB is designed to be stable without an output capacitor - a key differentiator from most LDO references. TI's internal compensation eliminates the need for COUT, reducing BOM count and avoiding capacitor-related drift or aging effects. An input capacitor (≥1 µF ceramic) is mandatory at VIN to suppress supply noise and ensure transient response integrity.
What does the 'E' grade signify in LM4132EMFX-2.0/NOPB?
The 'E' in LM4132EMFX-2.0/NOPB denotes the device grade - specifically, Grade E with ±0.5% initial output voltage accuracy and 30 ppm/°C temperature coefficient (–40°C to +125°C). This contrasts with Grade A (±0.05%, 10 ppm/°C) and Grade B (±0.1%, 20 ppm/°C). LM4132EMFX-2.0/NOPB is therefore optimized for cost-sensitive applications where moderate precision suffices.
Can LM4132EMFX-2.0/NOPB drive a 20 mA load continuously?
Yes, LM4132EMFX-2.0/NOPB is rated for continuous 20 mA output current across its full operating temperature range (–40°C to +125°C). Thermal derating is not required at 20 mA in still air with standard PCB copper; junction temperature remains within limits due to its low 60 µA quiescent current and SOT-23-5 package's 164.1°C/W θJA. For sustained 20 mA loads above 85°C ambient, minor layout enhancements (e.g., thermal vias) are recommended.
Is LM4132EMFX-2.0/NOPB qualified for automotive use?
LM4132EMFX-2.0/NOPB is not AEC-Q100 qualified. Only the LM4132-Q1 variants (e.g., LM4132AMFXT-2.0/NOPB-Q1) carry AEC-Q100 Grade 1 certification (–40°C to +125°C). The 'E' grade non-Q1 version is intended for industrial and commercial applications. For automotive designs, engineers must select the Q1-suffix part number to meet functional safety and qualification requirements.
LM4132EMFX-2.0/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):
- 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
LM4132EMFX-2.0/NOPB FAQ
1.How can I place an order for LM4132EMFX-2.0/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4132EMFX-2.0/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 LM4132EMFX-2.0/NOPB reliable?
The price and inventory of LM4132EMFX-2.0/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4132EMFX-2.0/NOPB is usually 5 days.
3.What payment methods are accepted for LM4132EMFX-2.0/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4132EMFX-2.0/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4132EMFX-2.0/NOPB?
LM4132EMFX-2.0/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4132EMFX-2.0/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 LM4132EMFX-2.0/NOPB?
For technical support, including LM4132EMFX-2.0/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4132EMFX-2.0/NOPB requirements.
6.How does Aetrix verify that LM4132EMFX-2.0/NOPB is sourced from the original manufacturer or authorized distributors?
All LM4132EMFX-2.0/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 LM4132EMFX-2.0/NOPB meets industry standards.
7.What is the process for return or replacement of LM4132EMFX-2.0/NOPB?
All LM4132EMFX-2.0/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM4132EMFX-2.0/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 LM4132EMFX-2.0/NOPB part is unused and in its original packaging.
Return procedure for LM4132EMFX-2.0/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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