My Inquiry
My Account
Texas Instruments LM4132DMFX-4.1
- Part No.:
- LM4132DMFX-4.1
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LM4132DMFX-4.1.pdf
- Description:
- IC VREF SERIES 0.4% SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:4,788
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LM4132DMFX-4.1 from Texas Instruments is a precision low-dropout (LDO) voltage reference IC delivering a stable 4.096 V output with 0.05% initial accuracy (A-grade), 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 LM4132DMFX-4.1 datasheet, LM4132DMFX-4.1 pinout, LM4132DMFX-4.1 application, or LM4132DMFX-4.1 equivalent, key selection criteria include dropout voltage at 10 mA (175 mV), 0.1–10 Hz output noise (350 µVPP), thermal hysteresis (75 ppm), long-term stability (50 ppm over 1000 hrs), and SOT-23-5 package compatibility with low-ESR ceramic capacitors.
Technical Context
The LM4132DMFX-4.1 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 consistent 4.096 V output across temperature (–40°C to +125°C) and load (0–20 mA).
It operates as a series reference with no mandatory output capacitor, eliminating buffer amplifier requirements. The enable pin controls a high-impedance shutdown state, reducing supply current to 3 µA while maintaining fast wake-up response - critical for battery-powered data acquisition systems requiring periodic measurement bursts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 4.096 V ±0.05% (A-grade) - matches standard 12-bit DAC/ADC full-scale reference points |
| Tempco | 10 ppm/°C (0°C to 85°C) - ensures ≤0.85 LSB drift over industrial temperature range for 16-bit systems |
| Dropout Voltage | 175 mV at 10 mA - enables operation from 4.271 V input, compatible with single-cell Li-ion after regulation |
| Quiescent Current | 60 µA - supports >1-year battery life in 10-µA average-power sensor nodes |
| Shutdown Current | 3 µA - reduces standby power by 20× vs active mode for duty-cycled applications |
| Noise (0.1–10 Hz) | 350 µVPP - contributes <0.035% of full-scale error in 4.096 V-referenced 16-bit measurements |
| Load Regulation | 25 ppm/mA - maintains output stability across 0–20 mA load variation, critical for driving ADC reference inputs |
Pinout & Package
SOT-23-5 (DBV) package, 2.90 mm × 1.60 mm body size, with exposed pad not electrically connected.
| 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 PCB connection to minimize noise coupling |
| 3 | EN | Active-high enable input - asserts when ≥65% of VIN; pulls to GND for 3 µA shutdown |
| 4 | VIN | Input supply - accepts 4.496 V to 5.5 V; minimum headroom defined by dropout specification |
| 5 | VREF | Precision output - delivers regulated 4.096 V; requires 100 nF ceramic CIN on VIN-GND per layout guidelines |
Key Features
| Feature | Design Value |
|---|---|
| EEPROM-based trimming | Corrects curvature, tempco, and initial accuracy at package level - eliminates post-assembly calibration |
| Low-ESR capacitor stability | Operates stably with 100 nF ceramic input capacitor only - no output cap required for basic operation |
| High output drive | Delivers 20 mA sink/source - directly biases multiple ADC reference inputs or op-amp gain stages |
| Automotive qualification | AEC-Q100 Grade 1 (–40°C to +125°C ambient) - validated for under-hood sensor modules |
| Thermal hysteresis control | 75 ppm max - ensures repeatable output after thermal cycling, critical for metrology-grade instruments |
Applications
| Portable Data Loggers | Industrial PLC Analog Inputs |
|---|---|
Use Scenario: Battery-powered environmental sensor node recording temperature, humidity, and pressure at 1-second intervals. IC Role / Device Role / Timing Role: Provides 4.096 V reference for 16-bit SAR ADC sampling sensor signals with <±0.5 LSB total unadjusted error. Use Value: 60 µA quiescent current extends CR2032 battery life to >2 years; 3 µA shutdown enables microcontroller-controlled sleep/wake cycles. | Use Scenario: Modular I/O card in programmable logic controller acquiring 4–20 mA current loop signals via precision shunt resistor. IC Role / Device Role / Timing Role: Supplies stable 4.096 V reference to 24-bit delta-sigma ADC measuring shunt voltage with 0.001% linearity. Use Value: 10 ppm/°C tempco and 75 ppm thermal hysteresis ensure <0.01% full-scale drift across factory floor temperature swings. |
| Medical Patient Monitors | Automotive Battery Management |
Use Scenario: ECG front-end module digitizing biopotential signals with high common-mode rejection and low noise. IC Role / Device Role / Timing Role: References instrumentation amplifier gain stage and 24-bit ADC to maintain DC accuracy and sub-µV noise floor. Use Value: 350 µVPP (0.1–10 Hz) noise avoids contamination of ST-segment analysis; AEC-Q100 qualification supports automotive medical integration. | Use Scenario: Cell voltage monitoring IC in 12S lithium-ion BMS requiring precise 4.096 V reference for 16-bit ADC per cell. IC Role / Device Role / Timing Role: Supplies reference to isolated sigma-delta modulator feeding digital filter in MCU-based BMS controller. Use Value: 175 mV dropout allows operation from 4.27 V supply - compatible with buck-regulated 4.5 V rail derived from 48 V battery stack. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REF5040AIDBVR | 4.096 V, 3 ppm/°C max tempco, 10 µVPP (0.1–10 Hz) noise, 1 mA quiescent current | Higher precision and lower noise, but 16× higher supply current and larger SOT-23-6 footprint | Select for metrology-grade lab equipment where noise and drift dominate power budget constraints |
| ADR4540BRZ | 4.096 V, 3 ppm/°C tempco, 1.8 µVRMS (0.1–10 Hz), 950 µA quiescent current, SOIC-8 package | Superior long-term stability (15 ppm/1000 hrs) and lower noise, but incompatible pinout and 15× higher IQ | Choose for fixed-power industrial controllers prioritizing absolute accuracy over board space or battery life |
Compared with REF5040AIDBVR and ADR4540BRZ, the LM4132DMFX-4.1 trades ultra-low noise and tempco for ultra-low power and compact SOT-23-5 packaging - making it optimal for space-constrained, battery-operated systems where 10 ppm/°C drift and 350 µVPP noise meet system-level accuracy targets.
Availability
LM4132DMFX-4.1 is available at Aetrix Electronics and suitable for portable instrumentation, industrial PLC analog inputs, medical patient monitors, and automotive battery management systems requiring stable component supply with guaranteed long-term availability.
Supply support for LM4132DMFX-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-qualified components.
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 instrumentation, industrial automation, and automotive electronics.
FAQ
What is the maximum input voltage for the LM4132DMFX-4.1?
The LM4132DMFX-4.1 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 performance, VIN should be maintained between VREF + 400 mV (4.496 V) and 5.5 V under recommended operating conditions - ensuring dropout compliance and thermal safety within the SOT-23-5 package's 350 mW power dissipation limit.
Does the LM4132DMFX-4.1 require an output capacitor?
No, the LM4132DMFX-4.1 does not require an output capacitor for stability - a key differentiator from many LDO references. The datasheet explicitly states COUT is optional, and the device remains stable with only the required 100 nF ceramic input capacitor (CIN) between VIN and GND. This simplifies layout and reduces bill-of-materials count, especially valuable in space-constrained designs like handheld test equipment.
What grade is specified for the LM4132DMFX-4.1 part number?
LM4132DMFX-4.1 is the A-grade variant, confirmed by Texas Instruments' orderable addendum and Electrical Characteristics Table 6.11. It guarantees ±0.05% initial output voltage accuracy and 10 ppm/°C temperature coefficient over 0°C to 85°C - the highest precision tier in the LM4132 family. The 'DMFX' suffix denotes tape-and-reel packaging in SOT-23-5 (DBV) format.
How does the enable pin function on the LM4132DMFX-4.1?
The EN pin on the LM4132DMFX-4.1 is an active-high digital control input. When pulled to ≥65% of VIN, the device operates normally; when pulled to ≤35% of VIN (or grounded), it enters 3 µA shutdown mode. This threshold is internally referenced to VIN, ensuring robust operation across input voltage variations - enabling direct interfacing with 3.3 V or 5 V GPIOs without level-shifting.
Is the LM4132DMFX-4.1 qualified for automotive applications?
Yes, the LM4132DMFX-4.1 is AEC-Q100 qualified for automotive applications (Grade 1: –40°C to +125°C ambient). It meets HBM ESD Class 2 (±2000 V) and is rated for operation across the full automotive temperature range with verified parametric performance - including tempco, dropout, and long-term stability - making it suitable for engine control units, battery monitors, and ADAS sensor interfaces.
LM4132DMFX-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:
- ±0.4%
- 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
LM4132DMFX-4.1 FAQ
1.How can I place an order for LM4132DMFX-4.1 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4132DMFX-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 LM4132DMFX-4.1 reliable?
The price and inventory of LM4132DMFX-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 LM4132DMFX-4.1 is usually 5 days.
3.What payment methods are accepted for LM4132DMFX-4.1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4132DMFX-4.1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4132DMFX-4.1?
LM4132DMFX-4.1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4132DMFX-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 LM4132DMFX-4.1?
For technical support, including LM4132DMFX-4.1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4132DMFX-4.1 requirements.
6.How does Aetrix verify that LM4132DMFX-4.1 is sourced from the original manufacturer or authorized distributors?
All LM4132DMFX-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 LM4132DMFX-4.1 meets industry standards.
7.What is the process for return or replacement of LM4132DMFX-4.1?
All LM4132DMFX-4.1 units undergo pre-shipment inspection (PSI). If there is an issue with LM4132DMFX-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 LM4132DMFX-4.1 part is unused and in its original packaging.
Return procedure for LM4132DMFX-4.1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM4132DMFX-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…
