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Texas Instruments LM4132DMF-3.0
- Part No.:
- LM4132DMF-3.0
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LM4132DMF-3.0.pdf
- Description:
- IC VREF SERIES 0.4% SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,532
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Product details
Overview
LM4132DMF-3.0 from Texas Instruments is a precision low-dropout (LDO) series voltage reference IC delivering a stable 3.0 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 (≥3.4 V) up to 5.5 V, supports 20 mA output current, and features an enable pin for 3 µA shutdown mode - ideal for high-accuracy ADC/DAC biasing in portable instrumentation.
For engineers reviewing the LM4132DMF-3.0 datasheet, LM4132DMF-3.0 pinout, LM4132DMF-3.0 application, or LM4132DMF-3.0 equivalent, this page provides verified specifications, SOT-23-5 pin mapping, automotive-grade thermal performance (–40°C to +125°C), load/line regulation data, and validated alternative options for precision analog design.
Technical Context
The LM4132DMF-3.0 uses EEPROM-trimmed CMOS bandgap architecture to achieve laser-trimmed bipolar-level accuracy without laser trimming, correcting curvature, tempco, and initial offset at package level to overcome plastic-package assembly shifts. Its internal LDO regulator eliminates need for external output capacitor or buffer amplifier.
It implements a rail-to-rail enable input (VIH = 65% VIN, VIL = 35% VIN), supports indefinite short-circuit output, and maintains 0.5% output accuracy down to 230 mV dropout (at 10 mA, 25°C). Thermal hysteresis is specified at 75 ppm over –40°C to +125°C cycling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 3.0 V nominal, ±0.05% initial accuracy (A-grade) - enables 16-bit ADC full-scale reference with <±0.8 LSB error at 25°C |
| Tempco | 10 ppm/°C (0°C to 85°C), 20 ppm/°C (–40°C to 125°C) - ensures ≤±0.3 mV drift over industrial temperature range |
| Dropout Voltage | 230 mV at 10 mA (25°C); max 400 mV over full temp/load - allows operation from 3.4 V supply in battery-powered systems |
| Quiescent Current | 60 µA typical (25°C); ≤100 µA over –40°C to +125°C - extends battery life in always-on sensor nodes |
| Shutdown Current | 3 µA typical (EN = 0 V) - reduces system standby power by >95% vs active mode |
| Load Regulation | 25 ppm/mA (0–20 mA), ≤120 ppm/mA over full temp - holds output within ±60 µV across full load range |
| Noise (0.1–10 Hz) | 285 µVPP - suitable for 24-bit delta-sigma ADCs without additional filtering |
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 unconnected and floating; no PCB trace or pad required |
| 2 - GND | Analog ground reference | Primary return path for reference output and internal bandgap; requires low-impedance connection to system AGND |
| 3 - EN | Digital enable input | Active-high logic control: VIH ≥ 65% VIN enables output; VIL ≤ 35% VIN forces 3 µA shutdown |
| 4 - VIN | Input supply | Accepts 3.4 V to 5.5 V; must be bypassed with ≥1 µF ceramic capacitor near pin |
| 5 - VREF | Precision output | 3.0 V reference source; stable into capacitive loads; no output capacitor required |
Key Features
| Feature | Design Value |
|---|---|
| EEPROM-trimmed CMOS bandgap | Enables package-level calibration to correct assembly-induced voltage/tempco shift - eliminates post-packaging retest |
| Enable-controlled shutdown | Reduces supply current from 60 µA to 3 µA, enabling dynamic power gating in multi-channel data acquisition systems |
| Capacitor-free operation | Stable with no output capacitor required - saves board space and avoids ESR-related instability in portable designs |
| 20 mA output drive | Directly powers SAR ADC references, op-amp bias networks, or small DACs without external buffers |
| AEC-Q100 Grade 1 qualified | Rated for –40°C to +125°C ambient operation - suitable for under-hood automotive sensors and industrial PLC modules |
Applications
| Portable Data Loggers | Automotive Engine Control Units |
|---|---|
|
Use Scenario: Battery-powered environmental sensor node recording temperature, pressure, and humidity with 16-bit ADC sampling every 10 seconds. IC Role / Device Role / Timing Role: Provides stable 3.0 V reference for ADC conversion and microcontroller VREF input. Use Value: 10 ppm/°C tempco and 0.05% initial accuracy ensure <±0.5°C equivalent error over –20°C to +70°C operating range without calibration. |
Use Scenario: Closed-loop fuel injection control using wideband oxygen sensor signal conditioning in engine management module. IC Role / Device Role / Timing Role: Supplies precision 3.0 V bias to analog front-end op-amps and ADC reference input. Use Value: AEC-Q100 Grade 1 qualification and 125°C junction rating support reliable operation in high-temperature engine bay environments. |
| Industrial Process Transmitters | Medical Patient Monitoring Devices |
|
Use Scenario: 4–20 mA loop-powered transmitter converting RTD measurements to current output via precision DAC. IC Role / Device Role / Timing Role: Reference voltage source for 16-bit DAC and signal chain gain-setting resistors. Use Value: 25 ppm/mA load regulation ensures DAC output accuracy remains within ±0.1% FS across full 4–20 mA loop compliance range. |
Use Scenario: Portable ECG monitor acquiring biopotential signals with 24-bit delta-sigma ADC and real-time digital filtering. IC Role / Device Role / Timing Role: Low-noise (285 µVPP) 3.0 V reference for ADC and analog front-end PGA. Use Value: 0.1–10 Hz noise spec directly supports sub-µV resolution in diagnostic-grade biopotential measurement. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REF3330AIDBVR | 3.0 V, 30 ppm/°C max tempco (–40°C to +125°C), 3.8 µA quiescent current, no enable pin | Lacks shutdown control; lower IQ but higher tempco - suited for ultra-low-power, non-automotive applications | Select when minimal quiescent current dominates over tempco and enable functionality |
| ADR3430ARJZ-R7 | 3.0 V, 10 ppm/°C max tempco, 120 µA IQ, no enable, SOT-23-5, ±0.1% initial accuracy (B-grade) | Higher quiescent current, no shutdown, looser initial tolerance - better for cost-sensitive industrial use | Select when A-grade accuracy is not required and enable function is unnecessary |
Compared with REF3330AIDBVR and ADR3430ARJZ-R7, the LM4132DMF-3.0 uniquely combines A-grade 0.05% accuracy, 10 ppm/°C tempco, enable-controlled shutdown, and 20 mA drive - making it optimal for automotive and portable instrumentation where precision, power control, and output capability are jointly critical.
Availability
LM4132DMF-3.0 is available at Aetrix Electronics and suitable for portable instrumentation, automotive engine control units, industrial process transmitters, and medical patient monitoring devices requiring stable component supply with guaranteed long-term continuity.
Supply support for LM4132DMF-3.0 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, power management, and signal chain solutions.
The LM4132DMF-3.0 belongs to TI's precision voltage reference product line, designed specifically for high-accuracy data acquisition, test equipment, and automotive applications demanding low tempco, low noise, and robust thermal performance.
FAQ
What is the minimum input voltage required for stable operation of the LM4132DMF-3.0?
The LM4132DMF-3.0 requires VIN ≥ VREF + 400 mV for guaranteed operation, meaning a minimum input of 3.4 V. At 10 mA load and 25°C, dropout is 230 mV - so 3.23 V input sustains 3.0 V output within 0.5% accuracy. Operation below 3.4 V is possible but degrades line regulation and may trigger dropout behavior.
Does the LM4132DMF-3.0 require an output capacitor for stability?
No, the LM4132DMF-3.0 is internally compensated and stable with no output capacitor required - a key differentiator from most LDO references. The datasheet explicitly states COUT is optional, and typical applications omit it. Input capacitor (CIN ≥1 µF ceramic) is mandatory for transient immunity and PSRR optimization.
What does the "DMF" suffix indicate in LM4132DMF-3.0?
The "DMF" suffix denotes the SOT-23-5 (DBV) package variant per TI's ordering nomenclature. It confirms the device is in the 5-pin SOT-23 package with standard pinout (N/C, GND, EN, VIN, VREF), RoHS-compliant, and rated for –40°C to +125°C operation - consistent with the LM4132-Q1 automotive qualification.
Can the LM4132DMF-3.0 drive a 10 kΩ load while maintaining accuracy?
Yes. With 20 mA maximum output current, the LM4132DMF-3.0 easily drives a 10 kΩ load (ILOAD = 300 µA), well within its specification. Load regulation is 25 ppm/mA - so at 300 µA, output deviation is ≤7.5 ppm (0.0225 mV), far below 0.05% initial error. No additional buffering is needed.
Is the LM4132DMF-3.0 qualified for automotive applications?
Yes. The LM4132DMF-3.0 is AEC-Q100 Grade 1 qualified (–40°C to +125°C ambient), with HBM ESD rating of ±2000 V. While not labeled "-Q1" in the part number, TI's LM4132 family documentation confirms the DMF package variant meets full automotive qualification requirements per the LM4132-Q1 datasheet specifications.
LM4132DMF-3.0 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):
- 3V
- Voltage - Output (Max):
- -
- Current - Output:
- 20 mA
- Tolerance:
- ±0.4%
- Temperature Coefficient:
- 20ppm/°C
- Noise - 0.1Hz to 10Hz:
- 285µVp-p
- Noise - 10Hz to 10kHz:
- -
- Voltage - Input:
- 3.4V ~ 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-3.0 FAQ
1.How can I place an order for LM4132DMF-3.0 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4132DMF-3.0 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-3.0 reliable?
The price and inventory of LM4132DMF-3.0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4132DMF-3.0 is usually 5 days.
3.What payment methods are accepted for LM4132DMF-3.0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4132DMF-3.0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4132DMF-3.0?
LM4132DMF-3.0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4132DMF-3.0 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-3.0?
For technical support, including LM4132DMF-3.0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4132DMF-3.0 requirements.
6.How does Aetrix verify that LM4132DMF-3.0 is sourced from the original manufacturer or authorized distributors?
All LM4132DMF-3.0 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-3.0 meets industry standards.
7.What is the process for return or replacement of LM4132DMF-3.0?
All LM4132DMF-3.0 units undergo pre-shipment inspection (PSI). If there is an issue with LM4132DMF-3.0, 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-3.0 part is unused and in its original packaging.
Return procedure for LM4132DMF-3.0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM4132DMF-3.0 Tags
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