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Texas Instruments LM4132AMF-3.3/NOPB
- Part No.:
- LM4132AMF-3.3/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LM4132AMF-3.3/NOPB.pdf
- Description:
- IC VREF SERIES 0.05% SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,064
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Product details
Overview
LM4132AMF-3.3/NOPB from Texas Instruments is a precision low-dropout (LDO) series voltage reference IC delivering a stable 3.3 V output with 0.05% initial accuracy, 10 ppm/°C temperature coefficient (0°C to 85°C), and 60 µA supply current. It features an enable pin for 3 µA shutdown mode, supports up to 20 mA load current, and operates from VIN = VREF + 400 mV to 5.5 V - ideal for high-accuracy ADC/DAC biasing in portable instrumentation.
For engineers reviewing the LM4132AMF-3.3/NOPB datasheet, LM4132AMF-3.3/NOPB pinout, LM4132AMF-3.3/NOPB application, or LM4132AMF-3.3/NOPB equivalent, key selection criteria include initial voltage tolerance, tempco over automotive-grade temperature range (–40°C to +125°C), dropout behavior at 10 mA, line/load regulation in ppm/V and ppm/mA, and SOT-23-5 package compatibility with space-constrained PCB layouts.
Technical Context
The LM4132AMF-3.3/NOPB uses EEPROM-trimmed CMOS bandgap architecture to achieve laser-trimmed bipolar-level accuracy without laser trimming. Its curvature correction and package-level programming compensate for assembly-induced shifts in voltage and tempco, enabling A-grade performance (0.05%, 10 ppm/°C) in cost-effective plastic SOT-23 packaging.
Unlike shunt references, it draws only 60 µA quiescent current and requires no output capacitor for stability. The enable-controlled shutdown reduces current to 3 µA, and its 400 mV max dropout at 10 mA supports operation from single Li-ion or regulated 3.7 V rails while maintaining 3.3 V reference integrity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 3.3 V ±0.05% (A grade) - ensures <±1.65 mV absolute error at 25°C for 16-bit+ data converters |
| Tempco | 10 ppm/°C (0°C to 85°C) - contributes ≤0.83 mV drift over industrial range, critical for temperature-stable calibration |
| Dropout Voltage | 175 mV (typ) at 10 mA - allows operation from 3.475 V input, compatible with 3.6 V LDOs or single-cell batteries |
| Supply Current | 60 µA (typ) - enables multi-year battery life in always-on sensor nodes with periodic measurement cycles |
| Shutdown Current | 3 µA (typ) - reduces system standby power by >95% when reference is inactive between conversions |
| Load Regulation | 25 ppm/mA (0–20 mA) - maintains <±0.083 mV output shift across full load, supporting dynamic current-sinking DACs |
| Noise (0.1–10 Hz) | 310 µVPP - low enough for 18-bit SAR ADCs without external filtering in precision data acquisition |
Pinout & Package
SOT-23-5 (DBV) package, 2.90 mm × 1.60 mm body size, with exposed pad not connected internally.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - N/C | No-connect terminal | Must be left floating; no internal connection - avoids unintended parasitic paths or ESD coupling |
| 2 - GND | Analog ground reference | Primary return path for reference output and internal bandgap; requires low-impedance PCB tie to system AGND |
| 3 - EN | Digital enable input | Active-high logic control: VIH ≥65% VIN enables output; VIL ≤35% VIN forces 3 µA shutdown mode |
| 4 - VIN | Input supply rail | Accepts 3.7 V to 5.5 V; must exceed VREF by ≥400 mV for regulation - decoupling with 1 µF ceramic required |
| 5 - VREF | Precision reference output | 3.3 V source capable of sourcing/sinking up to ±20 mA; drives ADC REF pins, DAC bias, or op-amp references directly |
Key Features
| Feature | Design Value |
|---|---|
| EEPROM-trimmed CMOS bandgap | Eliminates post-assembly calibration by correcting curvature, tempco, and initial accuracy at package level |
| Enable-controlled shutdown | Reduces supply current from 60 µA to 3 µA - extends battery life in duty-cycled measurement systems |
| Capacitor-free stability | Operates stably with only 1 µF input ceramic capacitor; no output cap needed - saves board area and BOM cost |
| Low 400 mV max dropout | Enables use with 3.6 V nominal supplies (e.g., Li-ion) while maintaining 3.3 V output within 0.5% accuracy |
| AEC-Q100 Grade 1 qualified | Rated for –40°C to +125°C ambient operation - suitable for under-hood automotive sensors and industrial controllers |
Applications
| Portable Data Loggers | Automotive Engine Control Units |
|---|---|
|
Use Scenario: Battery-powered field instruments recording temperature, pressure, and strain with 16-bit ADCs over multi-year deployments. IC Role / Device Role / Timing Role: Provides stable 3.3 V reference for successive-approximation ADCs and microcontroller analog peripherals. Use Value: 0.05% initial accuracy and 10 ppm/°C tempco ensure <±2 LSB error across temperature, eliminating recalibration in remote installations. |
Use Scenario: Closed-loop fuel injection and exhaust gas recirculation (EGR) control requiring precise sensor signal conditioning in engine bays. IC Role / Device Role / Timing Role: Supplies reference voltage to analog front-ends for oxygen (lambda) and manifold absolute pressure (MAP) sensors. Use Value: AEC-Q100 Grade 1 qualification and 125°C junction rating guarantee reliable operation under under-hood thermal stress. |
| Industrial PLC Analog Input Modules | Medical Patient Monitoring Devices |
|
Use Scenario: DIN-rail mounted programmable logic controllers acquiring 4–20 mA current loop signals via precision 24-bit ΣΔ ADCs. IC Role / Device Role / Timing Role: Serves as master reference for both ADC and isolated DAC channels in multi-channel I/O cards. Use Value: 20 mA output drive and 25 ppm/mA load regulation support simultaneous excitation of multiple RTD bridges without gain error. |
Use Scenario: Portable ECG and pulse oximetry units requiring ultra-low-noise, long-term stable references for biopotential amplification. IC Role / Device Role / Timing Role: Sets bias points for instrumentation amplifiers and filters in analog signal chains before digitization. Use Value: 310 µVPP (0.1–10 Hz) noise and 50 ppm long-term stability (1000 hrs) maintain diagnostic-grade signal fidelity over device lifetime. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REF3333AIDBVR | Fixed 3.3 V, 30 ppm/°C max tempco (–40°C to +125°C), 6 µA IQ, SOT-23-5 | Lower power but higher tempco; lacks enable pin and 20 mA drive capability | Prefer for ultra-low-power sensor nodes where tempco <10 ppm/°C is not required and load <1 mA |
| ADR3433ARJZ-R7 | 3.3 V, 10 ppm/°C max tempco, 120 µA IQ, 10 mA max load, SOT-23-5 | Higher quiescent current, lower output drive, no enable pin; tighter long-term stability (30 ppm/1000 hrs) | Choose when long-term drift is prioritized over shutdown control and load drive in medical calibration equipment |
Compared with REF3333AIDBVR and ADR3433ARJZ-R7, the LM4132AMF-3.3/NOPB uniquely combines A-grade tempco, enable functionality, and 20 mA drive in one SOT-23-5 package - making it optimal for systems needing dynamic power management and high-current reference buffering without external op-amps.
Availability
LM4132AMF-3.3/NOPB is available at Aetrix Electronics and suitable for portable instrumentation, automotive engine control units, and industrial PLC analog input modules requiring stable component supply with guaranteed long-term availability and traceable lot history.
Supply support for LM4132AMF-3.3/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 leader specializing in analog and embedded processing technologies, with decades of expertise in precision analog ICs and automotive-qualified components.
The LM4132 family was designed to deliver laser-trimmed reference accuracy using cost-effective CMOS processes - targeting high-reliability applications in test equipment, industrial automation, and automotive subsystems where stability, low dropout, and enable control are essential.
FAQ
What is the maximum input voltage for LM4132AMF-3.3/NOPB?
The LM4132AMF-3.3/NOPB supports a maximum input voltage of 5.5 V, as specified in the Absolute Maximum Ratings table. Operation above this voltage risks permanent damage. For reliable regulation, VIN must remain ≥ VREF + 400 mV (i.e., ≥3.7 V) across all load and temperature conditions - the LM4132AMF-3.3/NOPB is not rated for 6 V or higher inputs.
Does LM4132AMF-3.3/NOPB require an output capacitor?
No, the LM4132AMF-3.3/NOPB is internally compensated and stable without an output capacitor - a key differentiator from many LDO references. Only a 1 µF ceramic input capacitor (CIN) is required between VIN and GND. Adding COUT may improve transient response but is optional and not necessary for stability per the datasheet's "Stable With Low-ESR Ceramic Capacitors" feature.
What is the enable pin logic polarity for LM4132AMF-3.3/NOPB?
The EN pin on the LM4132AMF-3.3/NOPB is active-high: the device operates normally when EN ≥ 65% of VIN, and enters 3 µA shutdown mode when EN ≤ 35% of VIN. The threshold is ratiometric to VIN, ensuring robust enable behavior across varying input voltages - for example, with VIN = 3.7 V, VIH ≥ 2.4 V and VIL ≤ 1.3 V.
Is LM4132AMF-3.3/NOPB qualified for automotive applications?
Yes, the LM4132AMF-3.3/NOPB is AEC-Q100 Grade 1 qualified, with device-level testing confirming operation from –40°C to +125°C ambient temperature, HBM ESD classification Level 2 (±2 kV), and reliability for automotive use. It is distinct from the LM4132-Q1 variants but shares identical electrical specs and qualification scope - the /NOPB suffix denotes lead-free, RoHS-compliant packaging.
What is the typical output noise of LM4132AMF-3.3/NOPB?
The LM4132AMF-3.3/NOPB delivers 310 µVPP (peak-to-peak) integrated noise over the 0.1 Hz to 10 Hz bandwidth - a critical spec for high-resolution data acquisition. This value is measured with no output capacitor and reflects inherent bandgap noise; adding a 10 nF capacitor from VREF to GND can reduce low-frequency noise further, though it is not required for stability.
LM4132AMF-3.3/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):
- 3.3V
- Voltage - Output (Max):
- -
- Current - Output:
- 20 mA
- Tolerance:
- ±0.05%
- Temperature Coefficient:
- 20ppm/°C
- Noise - 0.1Hz to 10Hz:
- 310µVp-p
- Noise - 10Hz to 10kHz:
- -
- Voltage - Input:
- 3.7V ~ 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
LM4132AMF-3.3/NOPB FAQ
1.How can I place an order for LM4132AMF-3.3/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4132AMF-3.3/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 LM4132AMF-3.3/NOPB reliable?
The price and inventory of LM4132AMF-3.3/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4132AMF-3.3/NOPB is usually 5 days.
3.What payment methods are accepted for LM4132AMF-3.3/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4132AMF-3.3/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4132AMF-3.3/NOPB?
LM4132AMF-3.3/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4132AMF-3.3/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 LM4132AMF-3.3/NOPB?
For technical support, including LM4132AMF-3.3/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4132AMF-3.3/NOPB requirements.
6.How does Aetrix verify that LM4132AMF-3.3/NOPB is sourced from the original manufacturer or authorized distributors?
All LM4132AMF-3.3/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 LM4132AMF-3.3/NOPB meets industry standards.
7.What is the process for return or replacement of LM4132AMF-3.3/NOPB?
All LM4132AMF-3.3/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM4132AMF-3.3/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 LM4132AMF-3.3/NOPB part is unused and in its original packaging.
Return procedure for LM4132AMF-3.3/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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