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Texas Instruments LM4132CMF-4.1
- Part No.:
- LM4132CMF-4.1
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LM4132CMF-4.1.pdf
- Description:
- IC VREF SERIES 0.2% SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,790
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Product details
Overview
LM4132CMF-4.1 from Texas Instruments is a precision low-dropout (LDO) series voltage reference IC delivering a stable 4.096 V output with ±0.2% initial accuracy (C-grade), 10 ppm/°C temperature coefficient (0°C to 85°C), and 60 µA quiescent current - designed for high-resolution ADC/DAC biasing in portable instrumentation and automotive sensor signal chains.
For engineers reviewing the LM4132CMF-4.1 datasheet, LM4132CMF-4.1 pinout, LM4132CMF-4.1 application, or LM4132CMF-4.1 equivalent, key selection criteria include dropout voltage (175 mV at 10 mA), enable-controlled shutdown (3 µA), load regulation (25 ppm/mA), noise performance (350 µVPP, 0.1–10 Hz), and SOT-23-5 package compatibility with space-constrained PCB layouts.
Technical Context
The LM4132CMF-4.1 uses EEPROM-trimmed CMOS bandgap architecture to achieve laser-trimmed bipolar-level precision without laser trimming, correcting curvature, tempco, and accuracy at package level to mitigate assembly-induced shifts. Its internal LDO regulator enables direct drive of 20 mA loads without external buffer or output capacitor.
It operates from VIN = VREF + 400 mV (min) to 5.5 V, supports enable-controlled shutdown with VIH/VIL thresholds referenced to VIN (65%/35%), and maintains stability with low-ESR ceramic capacitors on input only - COUT is optional per design requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 4.096 V nominal; ±0.2% initial accuracy (C-grade) ensures ≤±8.2 mV absolute error at 25°C for 12-bit system calibration. |
| Tempco | 10 ppm/°C (0°C to 85°C); ≤20 ppm/°C over –40°C to +125°C - enables <±0.5 mV drift across full automotive ambient range. |
| Dropout Voltage | 175 mV at 10 mA load; allows operation from 4.271 V input - critical for single-cell Li-ion (3.0–4.2 V) or regulated 4.5 V rails. |
| Quiescent Current | 60 µA typical; rises to 100 µA max over temperature - supports >1-year battery life in always-on sensor nodes. |
| Shutdown Current | 3 µA typical with EN = 0 V; enables ultra-low-power sleep modes in portable data loggers and IoT edge devices. |
| Output Noise | 350 µVPP (0.1–10 Hz); low flicker noise preserves SNR in precision 16-bit+ SAR ADC front-ends. |
| Load Regulation | 25 ppm/mA (0–20 mA); ≤0.5 mV output shift under full load - eliminates need for post-regulation buffering in DAC references. |
Pinout & Package
SOT-23-5 (DBV) package: 2.90 mm × 1.60 mm body, 0.95 mm height, gull-wing leads; thermally enhanced for 164.1°C/W junction-to-ambient resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | N/C | No-connect pin; must remain floating - no internal connection or function. |
| 2 | GND | Analog ground reference; requires low-impedance PCB plane tie to minimize noise coupling into reference node. |
| 3 | EN | Active-high enable input; VIH ≥65% VIN, VIL ≤35% VIN - compatible with 1.8 V, 3.3 V, and 5 V logic without level-shifting. |
| 4 | VIN | Input supply pin; accepts 4.496 V to 5.5 V (VREF + 400 mV min); requires ≥1 µF low-ESR ceramic capacitor (CIN). |
| 5 | VREF | Precision 4.096 V output; capable of sourcing up to 20 mA; no output capacitor required for stability. |
Key Features
| Feature | Design Value |
|---|---|
| EEPROM-trimmed CMOS bandgap | Enables factory programming post-assembly to correct package-induced voltage/tempco shifts - eliminates laser trim cost and yield loss. |
| Enable-controlled shutdown | Reduces supply current to 3 µA, enabling rapid power cycling in duty-cycled measurement systems without external FETs. |
| No output capacitor required | Stable with only input capacitor (CIN); simplifies layout, reduces BOM count, and avoids COUT ESR-related instability risks. |
| 20 mA output drive capability | Directly powers ADC reference inputs, op-amp bias networks, or small DACs - eliminates buffer amplifier stage and associated noise/error. |
| AEC-Q100 Grade 1 qualified | Rated for –40°C to +125°C ambient operation with HBM ESD ≥±2 kV - suitable for under-hood automotive sensors and industrial control modules. |
Applications
| High-Resolution Data Acquisition | Automotive Sensor Signal Conditioning |
|---|---|
|
Use Scenario: 16-bit SAR ADC in portable environmental monitor measuring temperature, humidity, and gas concentration. IC Role / Device Role / Timing Role: Provides stable 4.096 V reference for ADC full-scale range, enabling true 16-bit linearity and <±1 LSB INL. Use Value: 10 ppm/°C tempco and 350 µVPP noise ensure <±0.0015% FS error over temperature - meets IEC 61000-4-30 Class A metering requirements. |
Use Scenario: Pressure transducer interface in engine control unit (ECU) with analog front-end feeding 12-bit ADC. IC Role / Device Role / Timing Role: Supplies precision bias to bridge amplifier and ADC reference, rejecting supply ripple and thermal drift. Use Value: AEC-Q100 qualification and 20 ppm/°C max tempco over –40°C to +125°C guarantee <±0.5 mV reference error across full operating envelope. |
| Battery-Powered Medical Devices | Industrial Process Controller |
|
Use Scenario: Portable ECG recorder using lithium coin cell (3.0 V) with boost converter stepping to 4.5 V rail. IC Role / Device Role / Timing Role: Generates clean 4.096 V reference for analog front-end and ADC, powered via enable pin during sampling bursts. Use Value: 3 µA shutdown current extends battery life by >3× vs non-shutdown references; 175 mV dropout enables operation down to 4.27 V input. |
Use Scenario: 4–20 mA transmitter module in hazardous-area process loop with isolated 24 V supply. IC Role / Device Role / Timing Role: Sets accurate current-sense reference for DAC-driven output stage and provides calibration point for self-test routines. Use Value: ±0.2% initial accuracy and 50 ppm long-term stability (1000 hrs) reduce annual recalibration frequency by 70% in field-deployed units. |
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 | 4.096 V, 30 ppm/°C max, 6 µA IQ, SOT-23-5 - lower quiescent current but higher tempco and no enable pin. | Best for ultra-low-power always-on sensing where shutdown is unnecessary and tempco tolerance >30 ppm/°C is acceptable. | Select REF3340AIDBVR when minimizing standby current outweighs need for active power gating and tight thermal stability. |
| ADR3440ARJZ-R7 | 4.096 V, 10 ppm/°C max, 120 µA IQ, SOT-23-5 - same tempco grade but higher supply current and no enable functionality. | Suitable for fixed-supply industrial PLC modules where continuous operation is required and board space permits higher IQ. | Choose ADR3440ARJZ-R7 when matching LM4132CMF-4.1's tempco is critical but enable control and sub-100 µA IQ are not required. |
Compared with REF3340AIDBVR and ADR3440ARJZ-R7, the LM4132CMF-4.1 uniquely combines 10 ppm/°C tempco, 3 µA shutdown, and 20 mA drive in one SOT-23-5 package - making it optimal for battery-powered, thermally demanding, and space-constrained applications requiring dynamic power management.
Availability
LM4132CMF-4.1 is available at Aetrix Electronics and suitable for high-precision data acquisition systems, automotive sensor interfaces, and portable medical devices requiring stable component supply with guaranteed long-term availability and traceable sourcing.
Supply support for LM4132CMF-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 leader specializing in analog, embedded processing, and connectivity technologies, with decades of expertise in precision analog ICs and automotive-grade components.
The LM4132 family was engineered to deliver laser-trimmed reference performance using cost-effective CMOS EEPROM trimming - targeting high-accuracy, low-power, and space-constrained applications in instrumentation, automotive, and industrial markets.
FAQ
What is the maximum input voltage for the LM4132CMF-4.1?
The LM4132CMF-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. The minimum input is VREF + 400 mV (4.496 V), ensuring proper LDO regulation at full load across temperature.
Does the LM4132CMF-4.1 require an output capacitor for stability?
No, the LM4132CMF-4.1 is internally compensated and stable without an output capacitor. The datasheet explicitly states COUT is optional, and the device delivers full 20 mA output drive capability with only the required input capacitor (CIN ≥1 µF, low-ESR ceramic).
What does the 'C' in LM4132CMF-4.1 indicate?
The 'C' denotes the initial accuracy grade: ±0.2% at 25°C. LM4132 grades range from A (±0.05%) to E (±0.5%). The 'MF' suffix specifies the SOT-23-5 (DBV) package with tape-and-reel packaging - confirmed in TI's orderable addendum.
Can the LM4132CMF-4.1 drive a 12-bit ADC reference input directly?
Yes, the LM4132CMF-4.1 can directly drive typical 12-bit ADC reference inputs. With 20 mA output capability, 25 ppm/mA load regulation, and 350 µVPP low-frequency noise, it maintains <±0.5 LSB error even under dynamic loading conditions common in successive-approximation converters.
Is the LM4132CMF-4.1 qualified for automotive applications?
Yes - the LM4132CMF-4.1 is part of the LM4132-Q1 family and is AEC-Q100 qualified for Grade 1 (–40°C to +125°C ambient), with HBM ESD rating of ±2 kV. While the 'CMF' suffix denotes commercial-temp version, its underlying die and qualification apply; confirm specific lot traceability with TI for automotive use.
LM4132CMF-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:
- ±0.2%
- 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
LM4132CMF-4.1 FAQ
1.How can I place an order for LM4132CMF-4.1 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4132CMF-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 LM4132CMF-4.1 reliable?
The price and inventory of LM4132CMF-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 LM4132CMF-4.1 is usually 5 days.
3.What payment methods are accepted for LM4132CMF-4.1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4132CMF-4.1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4132CMF-4.1?
LM4132CMF-4.1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4132CMF-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 LM4132CMF-4.1?
For technical support, including LM4132CMF-4.1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4132CMF-4.1 requirements.
6.How does Aetrix verify that LM4132CMF-4.1 is sourced from the original manufacturer or authorized distributors?
All LM4132CMF-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 LM4132CMF-4.1 meets industry standards.
7.What is the process for return or replacement of LM4132CMF-4.1?
All LM4132CMF-4.1 units undergo pre-shipment inspection (PSI). If there is an issue with LM4132CMF-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 LM4132CMF-4.1 part is unused and in its original packaging.
Return procedure for LM4132CMF-4.1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM4132CMF-4.1 Tags
-
TL431AIDBZR
Texas Instruments
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TL431BQDBZR
Texas Instruments
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AN431AN-ATRG1
Diodes Incorporated
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LM4040CYM3-2.5-TR
Microchip Technology
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LM4040CYM3-4.1-TR
Microchip Technology
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LM4040EIM3-2.5/NOPB
Texas Instruments
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AZ431LBNTR-G1
Diodes Incorporated
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LM4040D20IDBZR
Texas Instruments
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LM4041DIM3-ADJ/NOPB
Texas Instruments
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LM4040DIM3X-2.5/NOPB
Texas Instruments
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LM4040DIM3-2.5/NOPB
Texas Instruments
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AZ431LANTR-G1
Diodes Incorporated
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