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Texas Instruments LM4132AMF-4.1/NOPB
- Part No.:
- LM4132AMF-4.1/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LM4132AMF-4.1/NOPB.pdf
- Description:
- IC VREF SERIES 0.05% SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,826
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Product details
Overview
LM4132AMF-4.1/NOPB from Texas Instruments is a precision low-dropout series voltage reference IC delivering 4.096 V output with ±0.05% initial accuracy, 10 ppm/°C temperature coefficient (0°C to 85°C), and 60 µA quiescent 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-resolution ADC/DAC biasing in portable instrumentation.
For engineers reviewing the LM4132AMF-4.1/NOPB datasheet, LM4132AMF-4.1/NOPB pinout, LM4132AMF-4.1/NOPB application, or LM4132AMF-4.1/NOPB equivalent, key selection criteria include initial voltage tolerance, tempco over automotive-grade temperature range (–40°C to +125°C), dropout voltage 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-4.1/NOPB uses EEPROM-trimmed CMOS bandgap architecture to achieve laser-trimmed bipolar-level precision without laser trimming. Its curvature, tempco, and accuracy are corrected at package level to mitigate assembly-induced shifts - enabling A-grade performance (0.05%, 10 ppm/°C) in cost-effective plastic SOT-23 packaging.
This device operates as a three-terminal series reference with integrated enable logic, requiring only an input capacitor (CIN) and optionally an output capacitor (COUT). Unlike shunt references, it draws only 60 µA under load and eliminates idle current waste - critical for battery-powered systems where efficiency and long-term stability (50 ppm over 1000 hrs) are design-critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 4.096 V ±0.05% (±2.05 mV) at 25°C - matches standard 12-bit DAC/ADC full-scale reference points. |
| Tempco | 10 ppm/°C (0°C to 85°C), 20 ppm/°C (–40°C to 125°C) - ensures ≤±0.82 mV drift across industrial temperature range. |
| Dropout Voltage | 175 mV at 10 mA load - enables operation from 4.271 V supply, compatible with single-cell Li-ion or regulated 4.5 V rails. |
| Quiescent Current | 60 µA typical (≤100 µA over –40°C to +125°C) - supports >1-year battery life in always-on sensor nodes. |
| Shutdown Current | 3 µA at EN = 0 V - reduces system standby power by >95% vs active mode. |
| Load Regulation | 25 ppm/mA (0–20 mA) - maintains <±0.1 mV output shift across full load range. |
| Noise (0.1–10 Hz) | 350 µVPP - suitable for 16-bit+ data acquisition without external filtering. |
Pinout & Package
SOT-23-5 (DBV) package, 2.90 mm × 1.60 mm body size, 1.0 mm max height. Pin 1 is NC (no connect); pins are arranged with standard SOT-23 orientation (notch/left index mark).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | N/C | No-connect terminal - must remain floating; no internal connection or function. |
| 2 | GND | Analog ground reference - requires low-impedance connection to system AGND plane. |
| 3 | EN | Active-high enable input - asserts VREF when ≥65% of VIN; disables output and reduces IQ to 3 µA when <35% of VIN. |
| 4 | VIN | Input supply - accepts 4.496 V to 5.5 V; minimum headroom is 400 mV above VREF. |
| 5 | VREF | Precision output - delivers regulated 4.096 V; stable with low-ESR ceramic capacitors (CIN required, COUT optional). |
Key Features
| Feature | Design Value |
|---|---|
| EEPROM-trimmed CMOS bandgap | Enables A-grade accuracy (0.05%) and low tempco in plastic SOT-23 - avoids costly laser trimming and die-level calibration. |
| Enable-controlled shutdown | Reduces supply current from 60 µA to 3 µA - extends battery life in intermittent-sampling applications like IoT sensors. |
| 20 mA output drive capability | Eliminates need for external buffer op-amps in driving SAR ADC reference inputs or multiple DACs. |
| Stable with ceramic capacitors | Supports 1 µF X7R input cap only - simplifies layout and lowers BOM count vs tantalum/low-ESR electrolytic requirements. |
| Automotive qualification (Q1 option) | LM4132-Q1 variant meets AEC-Q100 Grade 1 (–40°C to +125°C ambient) - LM4132AMF-4.1/NOPB is industrial-grade but shares same core design. |
Applications
| Portable Data Logger | Industrial PLC Analog Input Module |
|---|---|
Use Scenario: Battery-powered environmental sensor node logging temperature/humidity at 10-second intervals using 16-bit sigma-delta ADC. IC Role / Device Role / Timing Role: Provides stable 4.096 V reference for ADC conversion - directly sets full-scale range and determines absolute measurement accuracy. Use Value: 10 ppm/°C tempco and 50 ppm long-term stability ensure <±0.5 LSB error over 1 year and full temperature range without recalibration. |
Use Scenario: 4–20 mA loop-powered analog input card conditioning signals from field transmitters. IC Role / Device Role / Timing Role: Supplies precision reference for programmable gain instrumentation amplifier and 12-bit SAR ADC front-end. Use Value: 20 mA drive capability powers both PGA bias and ADC REF, eliminating dual-reference design; 400 mV dropout allows operation from 4.5 V rail derived from loop supply. |
| Medical Patient Monitor ECG Front-End | Automotive Battery Management System (BMS) Cell Voltage Sensing |
Use Scenario: Low-noise ECG signal chain digitizing microvolt-level biopotentials with 16-bit resolution. IC Role / Device Role / Timing Role: Reference source for anti-aliasing filter cutoff tuning and ADC full-scale definition - impacts dynamic range and common-mode rejection. Use Value: 350 µVPP (0.1–10 Hz) noise ensures <0.1% contribution to total input-referred noise budget, preserving diagnostic signal fidelity. |
Use Scenario: High-accuracy cell voltage monitoring in 12S Li-ion pack with ±1 mV target accuracy per cell. IC Role / Device Role / Timing Role: Precision reference for differential voltage measurement circuitry - defines quantization step for cell voltage ADC. Use Value: ±0.05% initial accuracy and 20 ppm/°C tempco limit reference-induced error to <±0.8 mV across –40°C to +85°C operating range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REF5040AIDR | 4.096 V, 0.05% initial accuracy, 3 ppm/°C tempco, SOIC-8 package, 950 µA IQ | Lower tempco and higher drive (50 mA), but 15× higher quiescent current and larger footprint | Choose REF5040AIDR for ultra-low-drift lab equipment; LM4132AMF-4.1/NOPB preferred for portable/battery designs. |
| ADR4540BRZ | 4.096 V, 0.02% initial accuracy, 2 ppm/°C tempco, SOIC-8, 950 µA IQ, 10 ppm/°C long-term drift | Higher precision and stability, but incompatible SOT-23 footprint and unsuitable for low-power use cases | Select ADR4540BRZ when metrology-grade stability is mandatory; LM4132AMF-4.1/NOPB offers optimal balance of size, power, and A-grade performance. |
Compared with REF5040AIDR and ADR4540BRZ, the LM4132AMF-4.1/NOPB delivers A-grade accuracy and automotive-qualified thermal performance in a miniature SOT-23-5 package with ultra-low 60 µA supply current - making it uniquely suited for space- and power-constrained embedded systems where board area and battery life are primary constraints.
Availability
LM4132AMF-4.1/NOPB is available at Aetrix Electronics and suitable for portable instrumentation, industrial PLC analog modules, medical ECG front-ends, and automotive BMS cell sensing requiring stable component supply with guaranteed long-term availability.
Supply support for LM4132AMF-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 leader specializing in analog and embedded processing technologies, with decades of expertise in precision analog ICs and voltage references.
The LM4132 family was designed to deliver laser-trimmed bipolar reference performance using cost-effective, EEPROM-programmable CMOS technology - targeting high-accuracy, low-power, and space-constrained applications in industrial, medical, and portable electronics.
FAQ
What is the maximum input voltage for LM4132AMF-4.1/NOPB?
The absolute maximum input voltage for LM4132AMF-4.1/NOPB is 6 V, but the recommended operating maximum is 5.5 V. Operation above VREF + 400 mV (i.e., ≥4.496 V) is required for regulation; exceeding 5.5 V risks permanent damage per Absolute Maximum Ratings in the TI datasheet SNVS372G.
Does LM4132AMF-4.1/NOPB require an output capacitor?
No, LM4132AMF-4.1/NOPB is stable without an output capacitor (COUT), though a 1 µF ceramic capacitor may be added to improve transient response. The input capacitor (CIN) is mandatory - a 1 µF X7R ceramic placed close to VIN and GND pins is required for stability and noise reduction.
What grade and accuracy does LM4132AMF-4.1/NOPB specify?
LM4132AMF-4.1/NOPB is an A-grade device with ±0.05% initial output voltage accuracy at 25°C, corresponding to ±2.05 mV tolerance on its 4.096 V nominal output. This specification is production-tested and guaranteed across the device's operating temperature range.
Can LM4132AMF-4.1/NOPB drive a 12-bit SAR ADC reference input directly?
Yes, LM4132AMF-4.1/NOPB can directly drive typical 12-bit SAR ADC reference inputs, which commonly draw ≤100 µA during conversion. With 20 mA output capability and low output impedance, it easily handles dynamic current demands without droop or settling errors - eliminating need for external buffers in most designs.
Is LM4132AMF-4.1/NOPB qualified for automotive applications?
LM4132AMF-4.1/NOPB itself is not AEC-Q100 qualified; it is the industrial-grade version. For automotive use, TI offers the LM4132-Q1 series (e.g., LM4132QDBVR41), which is AEC-Q100 Grade 1 qualified (–40°C to +125°C ambient) and shares identical electrical specifications and pinout.
LM4132AMF-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:
- ±0.05%
- 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
LM4132AMF-4.1/NOPB FAQ
1.How can I place an order for LM4132AMF-4.1/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4132AMF-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 LM4132AMF-4.1/NOPB reliable?
The price and inventory of LM4132AMF-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 LM4132AMF-4.1/NOPB is usually 5 days.
3.What payment methods are accepted for LM4132AMF-4.1/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4132AMF-4.1/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4132AMF-4.1/NOPB?
LM4132AMF-4.1/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4132AMF-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 LM4132AMF-4.1/NOPB?
For technical support, including LM4132AMF-4.1/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4132AMF-4.1/NOPB requirements.
6.How does Aetrix verify that LM4132AMF-4.1/NOPB is sourced from the original manufacturer or authorized distributors?
All LM4132AMF-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 LM4132AMF-4.1/NOPB meets industry standards.
7.What is the process for return or replacement of LM4132AMF-4.1/NOPB?
All LM4132AMF-4.1/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM4132AMF-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 LM4132AMF-4.1/NOPB part is unused and in its original packaging.
Return procedure for LM4132AMF-4.1/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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