My Inquiry
My Account
Texas Instruments LM4132AMFX-4.1/NOPB
- Part No.:
- LM4132AMFX-4.1/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LM4132AMFX-4.1/NOPB.pdf
- Description:
- IC VREF SERIES 0.05% SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:4,901
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LM4132AMFX-4.1/NOPB from Texas Instruments is a precision low-dropout (LDO) series voltage reference IC delivering a stable 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 LM4132AMFX-4.1/NOPB datasheet, LM4132AMFX-4.1/NOPB pinout, LM4132AMFX-4.1/NOPB application, or LM4132AMFX-4.1/NOPB equivalent, key selection criteria include output stability under varying load/temperature, dropout headroom for battery-powered designs, enable-controlled power cycling, low-noise performance (350 µVPP, 0.1–10 Hz), and SOT-23-5 package compatibility with space-constrained PCB layouts.
Technical Context
The LM4132AMFX-4.1/NOPB uses EEPROM-trimmed CMOS band-gap architecture to achieve laser-trimmed bipolar-level accuracy without laser trimming, correcting curvature, tempco, and initial offset at package level to mitigate assembly-induced shifts. Its internal LDO regulator topology eliminates need for output buffer or mandatory COUT, unlike shunt references.
It implements a dedicated enable input (EN) that controls internal bias circuitry to reduce supply current from 60 µA to 3 µA in shutdown, with VIH/VIL thresholds defined as 65%/35% of VIN. Dropout voltage is specified at 175 mV (typical, ILOAD = 10 mA) and remains ≤400 mV across –40°C to 125°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 4.096 V ±0.05% (A-grade initial accuracy; enables 12-bit DAC/ADC full-scale calibration) |
| Tempco | 10 ppm/°C (0°C to 85°C); ensures <±0.85 mV drift over industrial range - critical for precision sensor signal chains) |
| Quiescent Current | 60 µA (active), 3 µA (shutdown); supports multi-year battery life in always-on monitoring nodes) |
| Max Load Current | 20 mA (sufficient to drive SAR ADC reference inputs and op-amp buffers without external gain stage) |
| Dropout Voltage | 175 mV (typ, 10 mA); allows operation from 4.271 V input - compatible with single-cell Li-ion (3.0–4.2 V) with LDO pre-regulator) |
| Output Noise | 350 µVPP (0.1–10 Hz); low enough for 16-bit measurement systems without additional filtering) |
| Line Regulation | 100 ppm/V (VREF + 400 mV to 5.5 V); maintains stability despite input rail sag in unregulated power domains) |
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, and halogen-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - N/C | No-connect | Internally unconnected; must be left floating - no tie to GND or VIN |
| 2 - GND | Ground reference | Primary return path for reference output and internal bias; requires low-impedance PCB connection to minimize noise coupling |
| 3 - EN | Enable control input | Active-high digital input; transitions at 35%/65% of VIN; enables fast power gating in sleep/wake cycles |
| 4 - VIN | Input supply | Accepts 4.496 V to 5.5 V (VREF + 400 mV min); requires ≥1 µF ceramic CIN per datasheet for stability |
| 5 - VREF | Precision output | 4.096 V regulated reference; capable of sourcing 20 mA; no mandatory COUT, but optional 0.1 µF improves PSRR |
Key Features
| Feature | Design Value |
|---|---|
| EEPROM-based curvature correction | Compensates die-to-package thermal stress shift, enabling A-grade 0.05% accuracy without laser trimming |
| Enable-controlled shutdown | Reduces IQ to 3 µA - extends battery runtime by >10× vs continuous operation in intermittent-sampling systems |
| Stable with low-ESR ceramics | Eliminates need for tantalum or electrolytic capacitors; supports compact, high-reliability layouts |
| Low dropout (175 mV typ) | Permits direct use after single-stage buck converter or linear post-regulator - reduces system BOM count |
| 20-mA output drive | Directly drives ADC reference pins and op-amp non-inverting inputs without external buffer amplifiers |
Applications
| Portable Data Loggers | Industrial PLC Analog Input Modules |
|---|---|
|
Use Scenario: Battery-powered environmental sensor node sampling temperature, humidity, and pressure at 1 Hz with 16-bit sigma-delta ADC. IC Role / Device Role / Timing Role: Primary voltage reference for ADC VREF pin and signal-conditioning amplifier biasing. Use Value: 10 ppm/°C tempco and 350 µVPP noise ensure <±0.01% measurement error over –25°C to 70°C operating range without recalibration. |
Use Scenario: 4–20 mA loop-powered analog input card accepting thermocouple and RTD signals in factory automation cabinets. IC Role / Device Role / Timing Role: Stable 4.096 V reference for precision 24-bit delta-sigma ADC and programmable gain amplifier front-end. Use Value: 0.05% initial accuracy and 50 ppm long-term stability (1000 hrs) maintain calibration integrity over 10+ year field deployment. |
| Medical Patient Monitoring Devices | Automotive Battery Management Systems |
|
Use Scenario: Portable ECG monitor with isolated analog front-end digitizing biopotential signals at 1 kSPS. IC Role / Device Role / Timing Role: Low-noise reference for ADC and active filter stages in isolated signal path. Use Value: 350 µVPP (0.1–10 Hz) and 100 dB PSRR suppress switching noise from isolated DC/DC converters. |
Use Scenario: High-voltage BMS cell voltage measurement IC requiring accurate 4.096 V reference for 16-bit SAR ADCs monitoring 12S Li-ion packs. IC Role / Device Role / Timing Role: Precision reference for multiplexed cell voltage acquisition with integrated safety monitoring. Use Value: AEC-Q100 Grade 1 qualification (–40°C to +125°C) and 20 ppm/°C max tempco ensure accuracy across full automotive thermal envelope. |
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% accuracy, 3 ppm/°C tempco, 950 µA IQ, SOIC-8 | Lower tempco but 15× higher quiescent current; requires larger footprint and heatsinking at full load | Prefer for ultra-stable lab equipment where power is not constrained; avoid in battery-powered designs |
| ADR4540BRZ | 4.096 V, 0.02% accuracy, 2 ppm/°C tempco, 950 µA IQ, SOIC-8 | Higher precision and lower noise (1.8 µVRMS), but incompatible SOT-23 footprint and higher cost | Select when sub-ppm stability is required and board area allows SOIC-8; not drop-in for space-critical layouts |
Compared with REF5040AIDR and ADR4540BRZ, the LM4132AMFX-4.1/NOPB delivers best-in-class power efficiency (60 µA IQ) and SOT-23-5 integration for portable and automotive applications, trading minor tempco margin (10 vs 2–3 ppm/°C) for 15× lower supply current and 60% smaller PCB area.
Availability
LM4132AMFX-4.1/NOPB is available at Aetrix Electronics and suitable for portable instrumentation, industrial data acquisition, and automotive battery management systems requiring stable component supply with guaranteed long-term continuity.
Supply support for LM4132AMFX-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 reference design and automotive-qualified components.
The LM4132 family was engineered to deliver laser-trimmed accuracy using cost-effective CMOS + EEPROM trimming - targeting high-volume portable, industrial, and automotive applications where size, power, and long-term stability are critical.
FAQ
What is the maximum input voltage for LM4132AMFX-4.1/NOPB?
The absolute maximum input voltage for LM4132AMFX-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.
Does LM4132AMFX-4.1/NOPB require an output capacitor?
No, LM4132AMFX-4.1/NOPB is stable without an output capacitor due to its internal LDO architecture. A 0.1 µF ceramic capacitor on VREF is optional and improves PSRR above 10 kHz, but it is not required for basic regulation or load step stability.
What is the enable pin threshold voltage for LM4132AMFX-4.1/NOPB?
The LM4132AMFX-4.1/NOPB enable pin has VIH = 65% of VIN and VIL = 35% of VIN, with hysteresis to prevent chatter near the transition. For VIN = 5 V, this means EN must exceed 3.25 V to activate and fall below 1.75 V to enter shutdown.
Is LM4132AMFX-4.1/NOPB qualified for automotive applications?
LM4132AMFX-4.1/NOPB is not automotive-qualified; it belongs to the standard LM4132 family. The automotive variant is LM4132QDBVRQ1 (SOT-23-5, AEC-Q100 Grade 1). LM4132AMFX-4.1/NOPB is rated for –40°C to +125°C junction temperature but lacks AEC-Q100 test documentation.
How does LM4132AMFX-4.1/NOPB achieve 0.05% initial accuracy without laser trimming?
LM4132AMFX-4.1/NOPB uses on-chip EEPROM registers to store correction coefficients for curvature, temperature coefficient, and initial offset - applied during final test at package level. This compensates for plastic-package-induced stress shifts that degrade laser-trimmed die accuracy, achieving A-grade 0.05% without laser.
LM4132AMFX-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
LM4132AMFX-4.1/NOPB FAQ
1.How can I place an order for LM4132AMFX-4.1/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4132AMFX-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 LM4132AMFX-4.1/NOPB reliable?
The price and inventory of LM4132AMFX-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 LM4132AMFX-4.1/NOPB is usually 5 days.
3.What payment methods are accepted for LM4132AMFX-4.1/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4132AMFX-4.1/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4132AMFX-4.1/NOPB?
LM4132AMFX-4.1/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4132AMFX-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 LM4132AMFX-4.1/NOPB?
For technical support, including LM4132AMFX-4.1/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4132AMFX-4.1/NOPB requirements.
6.How does Aetrix verify that LM4132AMFX-4.1/NOPB is sourced from the original manufacturer or authorized distributors?
All LM4132AMFX-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 LM4132AMFX-4.1/NOPB meets industry standards.
7.What is the process for return or replacement of LM4132AMFX-4.1/NOPB?
All LM4132AMFX-4.1/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM4132AMFX-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 LM4132AMFX-4.1/NOPB part is unused and in its original packaging.
Return procedure for LM4132AMFX-4.1/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM4132AMFX-4.1/NOPB Tags
-
TL431AIDBZR
Texas Instruments
-
TL431BQDBZR
Texas Instruments
-
AN431AN-ATRG1
Diodes Incorporated
-
LM4040CYM3-2.5-TR
Microchip Technology
-
LM4040CYM3-4.1-TR
Microchip Technology
-
LM4040EIM3-2.5/NOPB
Texas Instruments
-
AZ431LBNTR-G1
Diodes Incorporated
-
LM4040D20IDBZR
Texas Instruments
-
LM4041DIM3-ADJ/NOPB
Texas Instruments
-
LM4040DIM3X-2.5/NOPB
Texas Instruments
-
LM4040DIM3-2.5/NOPB
Texas Instruments
-
AZ431LANTR-G1
Diodes Incorporated
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
