My Inquiry
My Account
Texas Instruments LM4132BMFX-4.1
- Part No.:
- LM4132BMFX-4.1
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LM4132BMFX-4.1.pdf
- Description:
- IC VREF SERIES 0.1% SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,183
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LM4132BMFX-4.1 from Texas Instruments is a precision low-dropout (LDO) voltage reference IC delivering a stable 4.096 V output with ±0.1% initial accuracy (B grade), 10 ppm/°C temperature coefficient (0°C to 85°C), 60 µA supply current, and 20 mA output drive capability. It operates from VIN = VREF + 400 mV to 5.5 V and features an enable pin for 3 µA shutdown mode-ideal for high-resolution ADC biasing in portable instrumentation.
For engineers reviewing the LM4132BMFX-4.1 datasheet, LM4132BMFX-4.1 pinout, LM4132BMFX-4.1 application, or LM4132BMFX-4.1 equivalent, key selection considerations include its SOT-23-5 package, dropout voltage of 175 mV at 10 mA, 350 µVPP 0.1–10 Hz output noise, and AEC-Q100 Grade 1 qualification for automotive ambient operation from –40°C to +125°C.
Technical Context
The LM4132BMFX-4.1 implements a CMOS band-gap architecture with EEPROM-based curvature and tempco correction, enabling laser-trimmed reference performance without laser trimming. Its internal LDO regulator eliminates need for external output capacitors or buffer amplifiers while supporting up to 20 mA load current.
It uses a dedicated enable input (EN) referenced to VIN to enter 3 µA shutdown mode, and its input-to-output dropout is specified as 175 mV (typical) at 10 mA load-critical for battery-powered systems where headroom is constrained. Line regulation is 100 ppm/V over VIN = VREF + 400 mV to 5.5 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 4.096 V ±0.1% (B grade, 25°C); enables precise 12-bit DAC/ADC full-scale calibration |
| Initial Accuracy | ±0.1% (B grade); reduces system calibration burden in production test |
| Tempco | 10 ppm/°C (0°C to 85°C); ensures ≤0.85 mV drift across industrial temperature range |
| Supply Current | 60 µA (typical); supports >1-year battery life in 10 µA sleep-cycle sensor nodes |
| Dropout Voltage | 175 mV at 10 mA load; allows operation from 4.271 V input (e.g., single Li-ion cell) |
| Output Noise | 350 µVPP (0.1–10 Hz); meets <1 LSB noise requirement for 16-bit 4.096 V full-scale ADCs |
| Shutdown Current | 3 µA (EN = low); enables ultra-low-power wake-on-event architectures |
Pinout & Package
SOT-23-5 (DBV) package, 2.90 mm × 1.60 mm body size, 1.3 mm max height. Pin 1: N/C (no connect, must be left floating); Pin 2: GND; Pin 3: EN; Pin 4: VIN; Pin 5: VREF.
| 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 | Primary return path for reference output and internal band-gap core; requires low-impedance connection to system AGND |
| Pin 3 (EN) | Digital enable input | Active-high control: VIH ≥65% VIN enables output; VIL ≤35% VIN enters 3 µA shutdown |
| Pin 4 (VIN) | Input supply rail | Accepts 4.496 V to 5.5 V; powers internal LDO and band-gap; requires ≥1 µF ceramic CIN |
| Pin 5 (VREF) | Precision reference output | 4.096 V source capable of sourcing/sinking ±20 mA; no COUT required for stability |
Key Features
| Feature | Design Value |
|---|---|
| EEPROM-trimmed curvature compensation | Eliminates need for laser trimming; achieves 10 ppm/°C tempco in plastic SOT-23 package |
| Enable-controlled shutdown | Reduces quiescent current from 60 µA to 3 µA-enables duty-cycled precision sensing |
| No output capacitor required | Stable with zero COUT; simplifies layout and reduces BOM count in space-constrained designs |
| 20 mA output drive | Directly drives ADC reference inputs, DAC buffers, or op-amp gain-setting networks |
| AEC-Q100 Grade 1 qualified | Rated for –40°C to +125°C ambient; suitable for engine control, ADAS sensor modules, and infotainment power rails |
Applications
| Portable Data Loggers | Automotive Engine Control Units |
|---|---|
Use Scenario: Battery-powered environmental sensor node recording temperature, pressure, and humidity with 16-bit SAR ADC. IC Role / Device Role / Timing Role: Primary voltage reference for ADC VREF pin and analog front-end biasing. Use Value: 350 µVPP low-frequency noise and 10 ppm/°C tempco ensure <±0.5 LSB total error over –20°C to +70°C operating range. |
Use Scenario: Precision air-fuel ratio feedback loop using wideband oxygen sensor signal conditioning. IC Role / Device Role / Timing Role: Stable 4.096 V reference for current-sense amplifier gain setting and ADC conversion reference. Use Value: AEC-Q100 Grade 1 qualification and 400 mV max dropout at 125°C ensure reliable operation under under-hood thermal stress. |
| Industrial PLC Analog Input Modules | Medical Patient Monitor Front Ends |
Use Scenario: 4–20 mA loop-powered I/O module digitizing thermocouple and RTD signals via 24-bit ΣΔ ADC. IC Role / Device Role / Timing Role: Reference source for ADC and programmable gain amplifier (PGA) offset calibration. Use Value: ±0.1% initial accuracy and 50 ppm long-term stability reduce annual recalibration frequency in certified equipment. |
Use Scenario: ECG front-end with simultaneous 12-lead acquisition requiring ultra-low-noise, DC-accurate signal chain. IC Role / Device Role / Timing Role: Bias reference for instrumentation amplifiers and ADC reference voltage. Use Value: 350 µVPP 0.1–10 Hz noise and thermal hysteresis <75 ppm prevent baseline wander artifacts in diagnostic-grade waveforms. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REF3340AIDBVR | Fixed 4.096 V, 30 ppm/°C max tempco (–40°C to +125°C), 6 µA IQ, 5 mA output | Limited drive strength and higher tempco; suited for ultra-low-power microcontroller references, not ADC biasing | Select when supply current <10 µA is mandatory and load ≤2 mA; avoid for 16-bit+ data acquisition |
| ADR4540BRZ | 4.096 V, 3 ppm/°C max tempco, 950 µA IQ, 10 mA output, SOIC-8 package | Lower noise (1.8 µVPP), tighter tempco, but 16× higher IQ and larger footprint | Choose for metrology-grade instruments where 0.1 ppm/°C stability outweighs power and size penalties |
Compared with REF3340AIDBVR and ADR4540BRZ, the LM4132BMFX-4.1 uniquely balances 20 mA drive, 10 ppm/°C tempco, and 60 µA IQ in SOT-23-making it optimal for space-constrained, battery-aware 16-bit data acquisition where both precision and output capability matter.
Availability
LM4132BMFX-4.1 is available at Aetrix Electronics and suitable for portable instrumentation, automotive sensor modules, industrial PLC analog inputs, and medical patient monitor front ends requiring stable component supply with guaranteed long-term continuity.
Supply support for LM4132BMFX-4.1 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 specializing in analog and embedded processing technologies, with leadership in precision analog ICs and automotive-grade components.
The LM4132 family was designed to deliver laser-trimmed reference performance using cost-effective CMOS + EEPROM trimming-targeting high-accuracy data acquisition, battery-powered instrumentation, and automotive control systems demanding AEC-Q100 reliability.
FAQ
What is the maximum input voltage for the LM4132BMFX-4.1?
The LM4132BMFX-4.1 supports a maximum input voltage of 5.5 V, with minimum input defined as VREF + 400 mV (i.e., 4.496 V). Operation above 5.5 V risks permanent damage per Absolute Maximum Ratings. The device maintains regulation and specified accuracy across this full input range when load and temperature conditions remain within Recommended Operating Conditions.
Does the LM4132BMFX-4.1 require an output capacitor for stability?
No, the LM4132BMFX-4.1 is internally compensated and stable without an output capacitor (COUT). This is explicitly confirmed in the datasheet's Simplified Schematic and "Stable With Low-ESR Ceramic Capacitors" feature list. While COUT may further reduce noise in some layouts, it is optional-not required-for stability or regulation.
What does the 'B' in LM4132BMFX-4.1 indicate?
The 'B' denotes the initial output voltage accuracy grade: ±0.1% at 25°C. The LM4132 family offers five grades (A to E), with 'A' being ±0.05% and 'E' ±0.5%. All grades share identical pinout, package, and functional behavior-the 'B' grade provides optimal balance of precision, cost, and availability for most high-resolution measurement applications.
Can the LM4132BMFX-4.1 drive a 10 kΩ load directly?
Yes. With a 4.096 V output and maximum load current of 20 mA, the LM4132BMFX-4.1 can directly drive loads down to 204.8 Ω (4.096 V ÷ 20 mA). A 10 kΩ load draws only 409.6 µA-well within specification-and introduces negligible error (<0.01% due to load regulation of 25 ppm/mA).
Is the LM4132BMFX-4.1 qualified for automotive use?
Yes-the LM4132BMFX-4.1 is part of the LM4132-Q1 qualified family and meets AEC-Q100 Grade 1 requirements: –40°C to +125°C ambient operating temperature, HBM ESD Class 2 (±2000 V), and full automotive PPAP documentation support. It is approved for use in engine control, body electronics, and ADAS subsystems.
LM4132BMFX-4.1 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):
- 4.096V
- Voltage - Output (Max):
- -
- Current - Output:
- 20 mA
- Tolerance:
- ±0.1%
- 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
LM4132BMFX-4.1 FAQ
1.How can I place an order for LM4132BMFX-4.1 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4132BMFX-4.1 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 LM4132BMFX-4.1 reliable?
The price and inventory of LM4132BMFX-4.1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4132BMFX-4.1 is usually 5 days.
3.What payment methods are accepted for LM4132BMFX-4.1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4132BMFX-4.1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4132BMFX-4.1?
LM4132BMFX-4.1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4132BMFX-4.1 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 LM4132BMFX-4.1?
For technical support, including LM4132BMFX-4.1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4132BMFX-4.1 requirements.
6.How does Aetrix verify that LM4132BMFX-4.1 is sourced from the original manufacturer or authorized distributors?
All LM4132BMFX-4.1 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 LM4132BMFX-4.1 meets industry standards.
7.What is the process for return or replacement of LM4132BMFX-4.1?
All LM4132BMFX-4.1 units undergo pre-shipment inspection (PSI). If there is an issue with LM4132BMFX-4.1, 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 LM4132BMFX-4.1 part is unused and in its original packaging.
Return procedure for LM4132BMFX-4.1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM4132BMFX-4.1 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…
