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Texas Instruments LM4132DMF-4.1
- Part No.:
- LM4132DMF-4.1
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LM4132DMF-4.1.pdf
- Description:
- IC VREF SERIES 0.4% SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,359
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Product details
Overview
LM4132DMF-4.1 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 (A-grade), 10 ppm/°C temperature coefficient (0°C to 85°C), and 60 µA quiescent current. It operates from VIN = VREF + 400 mV to 5.5 V, supports up to 20 mA load, and features an enable pin for 3 µA shutdown - ideal for high-resolution ADC/DAC biasing in portable instrumentation.
For engineers reviewing the LM4132DMF-4.1 datasheet, LM4132DMF-4.1 pinout, LM4132DMF-4.1 application, or LM4132DMF-4.1 equivalent, key selection criteria include dropout voltage at 10 mA (175 mV typ), 0.1–10 Hz noise (350 µVPP), line regulation (100 ppm/V), and SOT-23-5 package compatibility with space-constrained PCB layouts.
Technical Context
The LM4132DMF-4.1 uses EEPROM-trimmed CMOS bandgap architecture to achieve laser-trimmed bipolar-level precision without laser trimming. Its curvature correction and tempco compensation are performed at package level to counteract assembly-induced shifts, enabling consistent 4.096 V output across temperature and unit-to-unit variation.
This device functions as a two-terminal series reference with active enable control: EN pin accepts 35%–65% of VIN logic thresholds, and internal circuitry maintains regulation down to 400 mV dropout while rejecting supply ripple up to –40 dB at 10 kHz (no COUT required).
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 mV drift over industrial range, critical for metrology |
| Dropout Voltage | 175 mV (typ, ILOAD = 10 mA) - enables operation from 4.271 V input, compatible with Li-ion single-cell systems |
| Quiescent Current | 60 µA (active), 3 µA (shutdown) - extends battery life in always-on sensor nodes |
| Noise (0.1–10 Hz) | 350 µVPP - limits quantization error in 16-bit+ data acquisition front-ends |
| Load Regulation | 25 ppm/mA (0–20 mA) - maintains stability under dynamic load switching in mixed-signal SoCs |
| Line Regulation | 100 ppm/V (VIN = VREF + 400 mV to 5.5 V) - rejects ripple from noisy DC-DC converters |
Pinout & Package
SOT-23-5 (DBV) package: 2.90 mm × 1.60 mm body, 0.95 mm height, gull-wing leads. RoHS-compliant, moisture sensitivity level 1.
| 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 - drives high (>65% VIN) to activate reference; pulls low (<35% VIN) for 3 µA shutdown |
| 4 | VIN | Input supply - minimum 4.496 V (4.096 V + 400 mV); decoupled with ≥1 µF ceramic capacitor |
| 5 | VREF | Precision 4.096 V output - capable of sourcing 20 mA; stable without output capacitor |
Key Features
| Feature | Design Value |
|---|---|
| EEPROM-based curvature correction | Compensates die-package thermal shift post-assembly, eliminating need for laser trim and enabling A-grade spec in plastic SOT-23 |
| Enable-controlled shutdown | Reduces supply current to 3 µA - enables power-gating in duty-cycled measurement systems |
| Capacitor-free stability | Operates without output capacitor (COUT), simplifying layout and reducing BOM count in space-limited designs |
| Low-noise 0.1–10 Hz output | 350 µVPP - avoids adding noise floor that would degrade effective resolution of 16-bit ADCs |
| Automotive qualification option | LM4132-Q1 variant available with AEC-Q100 Grade 1 (–40°C to +125°C) - supports infotainment and ADAS sensor references |
Applications
| Portable Data Loggers | Industrial PLC Analog Inputs |
|---|---|
Use Scenario: Battery-powered environmental sensor node recording temperature, humidity, and pressure at 100 Hz with 16-bit SAR ADC. IC Role / Device Role / Timing Role: Primary voltage reference for ADC VREF pin and DAC output buffer biasing. Use Value: 4.096 V output aligns with 212 scaling; 60 µA IQ extends 10-year coin-cell life; 175 mV dropout allows direct use of 4.2 V Li-ion. |
Use Scenario: Modular analog input card accepting 4–20 mA and ±10 V signals in factory automation rack. IC Role / Device Role / Timing Role: Precision reference for programmable gain instrumentation amplifier and sigma-delta ADC front-end. Use Value: 10 ppm/°C tempco ensures <±0.02% reading error across –25°C to +70°C cabinet range; 20 mA drive supports multiple channel buffers. |
| Medical Patient Monitors | Test & Measurement Equipment |
Use Scenario: Portable ECG module digitizing biopotential signals with 24-bit delta-sigma ADC. IC Role / Device Role / Timing Role: Low-noise reference for ADC and analog front-end PGA calibration. Use Value: 350 µVPP (0.1–10 Hz) prevents noise aliasing into cardiac band; AEC-Q100 qualified version supports safety-critical design reuse. |
Use Scenario: Benchtop multimeter performing 6½-digit DC voltage measurements with auto-ranging. IC Role / Device Role / Timing Role: Primary reference source for internal DMM ADC and self-calibration circuitry. Use Value: 0.05% initial accuracy and 50 ppm long-term stability (1000 hrs) reduce annual recalibration frequency; 20 mA output drives internal reference buffers. |
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, 3 ppm/°C max, 10 µVPP (0.1–10 Hz), 1 mA IQ, SOIC-8 | Lower noise and tempco but higher IQ and larger package; requires COUT | Choose for metrology-grade instruments where ultra-low drift outweighs size and power penalties. |
| ADR4540BRZ | 4.096 V, 3 ppm/°C max, 12 µVPP, 950 µA IQ, SOIC-8 | Higher precision and lower noise, but 15× higher supply current and no enable pin | Prefer for lab-grade equipment with ample power budget and no need for shutdown control. |
Compared with REF5040AIDR and ADR4540BRZ, the LM4132DMF-4.1 trades ultra-low drift for compact SOT-23-5 size, micropower operation, and integrated enable - making it optimal for portable, battery-sensitive, and space-constrained precision systems where 10 ppm/°C and 350 µVPP meet specification.
Availability
LM4132DMF-4.1 is available at Aetrix Electronics and suitable for portable instrumentation, industrial PLC analog inputs, medical patient monitors, and test & measurement equipment requiring stable component supply across extended product lifecycles.
Supply support for LM4132DMF-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 LM4132DMF-4.1 belongs to TI's precision voltage reference product line, engineered for high-accuracy, low-drift, low-power applications in instrumentation, industrial control, and portable medical devices.
FAQ
What is the maximum input voltage for the LM4132DMF-4.1?
The LM4132DMF-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 across all operating conditions, including transient spikes.
Does the LM4132DMF-4.1 require an output capacitor for stability?
No, the LM4132DMF-4.1 is internally compensated and stable without an output capacitor (COUT). The datasheet explicitly states COUT is optional, and typical applications operate reliably with only the required input capacitor (CIN ≥ 1 µF ceramic). Adding COUT may improve PSRR but is not necessary for loop stability.
What grade does the 'DMF' suffix indicate for the LM4132DMF-4.1?
The 'DMF' suffix denotes the SOT-23-5 package (DBV) and the D-grade accuracy: ±0.4% initial output voltage tolerance at 25°C. This corresponds to the LM4132D-4.1 variant per TI's ordering nomenclature - distinct from A-grade (±0.05%) or B-grade (±0.1%) versions of the same 4.096 V part.
Can the LM4132DMF-4.1 drive a 20 mA load continuously?
Yes, the LM4132DMF-4.1 is rated for continuous 20 mA output current per the Recommended Operating Conditions table. At this load, dropout remains ≤400 mV (worst-case) and output voltage deviation is limited to 25 ppm/mA load regulation - ensuring stable 4.096 V operation even when driving multiple op-amp buffers or ADC reference inputs simultaneously.
Is the LM4132DMF-4.1 qualified for automotive applications?
The base LM4132DMF-4.1 is not automotive-qualified; however, the pin-compatible LM4132Q1DMF-4.1 variant is AEC-Q100 Grade 1 qualified (–40°C to +125°C ambient). Both share identical electrical specs and SOT-23-5 packaging, but only the Q1 version undergoes automotive stress testing and is marked with the Q1 suffix.
LM4132DMF-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
LM4132DMF-4.1 FAQ
1.How can I place an order for LM4132DMF-4.1 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4132DMF-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 LM4132DMF-4.1 reliable?
The price and inventory of LM4132DMF-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 LM4132DMF-4.1 is usually 5 days.
3.What payment methods are accepted for LM4132DMF-4.1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4132DMF-4.1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4132DMF-4.1?
LM4132DMF-4.1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4132DMF-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 LM4132DMF-4.1?
For technical support, including LM4132DMF-4.1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4132DMF-4.1 requirements.
6.How does Aetrix verify that LM4132DMF-4.1 is sourced from the original manufacturer or authorized distributors?
All LM4132DMF-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 LM4132DMF-4.1 meets industry standards.
7.What is the process for return or replacement of LM4132DMF-4.1?
All LM4132DMF-4.1 units undergo pre-shipment inspection (PSI). If there is an issue with LM4132DMF-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 LM4132DMF-4.1 part is unused and in its original packaging.
Return procedure for LM4132DMF-4.1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM4132DMF-4.1 Tags
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