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Texas Instruments LM4132DMF-2.5/NOPB
- Part No.:
- LM4132DMF-2.5/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LM4132DMF-2.5/NOPB.pdf
- Description:
- IC VREF SERIES 0.4% SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,796
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Product details
Overview
LM4132DMF-2.5/NOPB from Texas Instruments is a precision low-dropout (LDO) series voltage reference IC delivering a stable 2.5 V output with 0.05% initial accuracy, 10 ppm/°C temperature coefficient (0°C to 85°C), and 60 µA quiescent current - used in high-resolution ADC/DAC biasing, portable instrumentation, and battery-powered test equipment.
For engineers reviewing the LM4132DMF-2.5/NOPB datasheet, LM4132DMF-2.5/NOPB pinout, LM4132DMF-2.5/NOPB application, or LM4132DMF-2.5/NOPB equivalent, key selection criteria include dropout voltage (175 mV at 10 mA), enable-controlled shutdown (3 µA), load regulation (25 ppm/mA), and SOT-23-5 compatibility with ceramic capacitors only.
Technical Context
The LM4132DMF-2.5/NOPB implements a CMOS band-gap architecture with EEPROM-based curvature and tempco correction, enabling laser-trimmed-level precision without laser trimming. It operates as a series reference with internal error amplifier and pass transistor, supporting up to 20 mA output current without requiring an output capacitor.
Its enable pin provides digital control of output state, with VIH = 65% VIN and VIL = 35% VIN thresholds, and it maintains regulation over input voltages from (VREF + 400 mV) to 5.5 V - making it suitable for single-cell Li-ion and dual-cell alkaline systems where headroom is constrained.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.5 V ±0.05% (A-grade initial accuracy at 25°C) |
| Tempco | 10 ppm/°C (0°C to 85°C), 20 ppm/°C (–40°C to 125°C) |
| Dropout Voltage | 175 mV at 10 mA load - enables operation from 2.675 V input |
| Quiescent Current | 60 µA active mode; 3 µA shutdown mode via EN pin |
| Load Regulation | 25 ppm/mA (0–20 mA), ensuring <±50 µV shift across full load range |
| Line Regulation | 50 ppm/V (VREF + 400 mV to 5.5 V), limiting input sensitivity |
| Output Noise | 240 µVPP (0.1 Hz to 10 Hz), critical for 16-bit+ data converters |
Pinout & Package
SOT-23-5 (DBV) package: 2.90 mm × 1.60 mm body, 0.95 mm height, gull-wing leads. RoHS-compliant, lead-free, and halogen-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - N/C | No-connect | Internally unconnected; must be left floating - no PCB trace or pull-up/down |
| 2 - GND | Ground reference | Primary return path for reference output and supply current; requires low-impedance connection to system ground plane |
| 3 - EN | Enable control input | Active-high logic input; drives output to regulated state when ≥65% VIN; pulls output to high-impedance when ≤35% VIN |
| 4 - VIN | Input supply | Accepts 2.9 V to 5.5 V; minimum headroom = 175 mV above VREF for regulation |
| 5 - VREF | Precision output | 2.5 V reference source; capable of sourcing up to 20 mA; stable with ≥1 µF ceramic CIN (required), COUT optional |
Key Features
| Feature | Design Value |
|---|---|
| EEPROM-trimmed curvature compensation | Eliminates assembly-induced voltage shift in plastic SOT-23 packaging, enabling 0.05% accuracy without laser trimming |
| Enable-controlled shutdown | Reduces supply current to 3 µA - extends battery life in sleep-mode portable instruments |
| No output capacitor required | Enables space-constrained designs (e.g., handheld DMMs) without stability-compromising external COUT |
| Low-noise 0.1–10 Hz output | 240 µVPP supports 16-bit SAR and delta-sigma ADCs without additional filtering |
| Stable with low-ESR ceramics | Supports modern 0402/0603 X7R/X5R MLCCs (≥1 µF) - avoids tantalum or electrolytic dependencies |
Applications
| Portable Data Acquisition | Automotive Sensor Signal Conditioning |
|---|---|
|
Use Scenario: Handheld multimeter measuring DC voltage with 16-bit resolution under varying ambient temperatures. IC Role / Device Role / Timing Role: Provides stable 2.5 V reference for SAR ADC and analog front-end gain calibration. Use Value: 10 ppm/°C tempco and 0.05% initial accuracy ensure <±0.5 LSB error across –10°C to 50°C operating range. |
Use Scenario: Engine control unit (ECU) monitoring throttle position sensor output with ratiometric scaling. IC Role / Device Role / Timing Role: Supplies precision reference to ADC measuring potentiometer voltage in AEC-Q100 Grade 1 environment. Use Value: Qualified per AEC-Q100 Grade 1 (–40°C to +125°C) and immune to automotive supply transients due to 5.5 V max VIN rating. |
| Medical Patient Monitor Analog Front-End | Battery-Powered IoT Node ADC Biasing |
|
Use Scenario: Portable ECG device digitizing biopotential signals using low-power 18-bit delta-sigma ADC. IC Role / Device Role / Timing Role: Delivers ultra-low-noise 2.5 V reference to ADC reference input and PGA bias network. Use Value: 240 µVPP (0.1–10 Hz) noise floor prevents degradation of SNR in microvolt-level signal chains. |
Use Scenario: Wireless environmental sensor node powered by CR2032 coin cell, sampling temperature/humidity every 5 minutes. IC Role / Device Role / Timing Role: Supplies reference to successive-approximation ADC during brief active measurement bursts. Use Value: 3 µA shutdown current minimizes quiescent drain; 60 µA active current enables sub-1-second conversion cycles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REF3325AIDBVR | Fixed 2.5 V, 30 ppm/°C max tempco (–40°C to +125°C), 6 µA IQ, SOT-23-5 | Lower power but higher tempco; no enable pin; not AEC-Q100 qualified | Preferred for ultra-low-power wearables where tempco tolerance >30 ppm/°C is acceptable |
| ADR3425ARJZ-R7 | 2.5 V, 10 ppm/°C max tempco, 120 µA IQ, 500 mV dropout, SOT-23-5 | Higher quiescent current and dropout; no enable pin; industrial temp range only (–40°C to +125°C) | Used where higher output drive (>20 mA) or tighter long-term stability (15 ppm/1000 hrs) is prioritized over shutdown capability |
Compared with REF3325AIDBVR and ADR3425ARJZ-R7, the LM4132DMF-2.5/NOPB uniquely combines AEC-Q100 qualification, enable-controlled shutdown, and 10 ppm/°C tempco in a 60 µA, 175 mV-dropout SOT-23-5 package - making it optimal for automotive and portable test gear requiring both precision and power-state flexibility.
Availability
LM4132DMF-2.5/NOPB is available at Aetrix Electronics and suitable for portable instrumentation, automotive sensor modules, and medical analog front-ends requiring stable component supply with guaranteed long-term availability and TI-authorized traceability.
Supply support for LM4132DMF-2.5/NOPB 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 for high-accuracy, low-power reference needs in space-constrained, battery-operated, and safety-critical systems - targeting instrumentation, automotive sensors, and portable medical devices.
FAQ
What is the maximum load current supported by the LM4132DMF-2.5/NOPB?
The LM4132DMF-2.5/NOPB delivers up to 20 mA of output current while maintaining regulation within specified accuracy and dropout limits. This capability eliminates the need for external buffer amplifiers in most data acquisition and sensor interface circuits, directly driving ADC reference inputs, op-amp bias networks, or DAC references without performance degradation.
Does the LM4132DMF-2.5/NOPB require an output capacitor for stability?
No, the LM4132DMF-2.5/NOPB is internally compensated and stable without an output capacitor - a key differentiator from many competing references. A 1 µF ceramic input capacitor (CIN) is mandatory for input bypassing, but COUT is optional and only recommended for specific noise-reduction scenarios in sensitive applications.
Is the LM4132DMF-2.5/NOPB qualified for automotive use?
Yes, the LM4132DMF-2.5/NOPB is part of the LM4132-Q1 family and qualified to AEC-Q100 Grade 1 standards (–40°C to +125°C ambient), with HBM ESD rating of ±2000 V. It meets automotive reliability requirements for engine bay and cabin-mounted sensor modules and control units.
What is the minimum input voltage required for regulation at full load?
At 10 mA load, the LM4132DMF-2.5/NOPB requires a minimum input voltage of 2.675 V (2.5 V + 175 mV dropout). Under worst-case conditions (–40°C to +125°C), dropout increases to 400 mV, requiring VIN ≥ 2.9 V - enabling compatibility with single-cell Li-ion (2.7–4.2 V) and two-cell alkaline (2.4–3.2 V) supplies.
How does the enable pin function on the LM4132DMF-2.5/NOPB?
The EN pin on the LM4132DMF-2.5/NOPB is an active-high digital control input. When pulled to ≥65% of VIN, the device enters normal operation; when ≤35% of VIN, it enters shutdown mode drawing only 3 µA. No external pull-up/down resistors are needed - direct MCU GPIO interfacing is supported.
LM4132DMF-2.5/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- SC-74A, SOT-753
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Reference Type:
- Series
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 2.5V
- Voltage - Output (Max):
- -
- Current - Output:
- 20 mA
- Tolerance:
- ±0.4%
- Temperature Coefficient:
- 20ppm/°C
- Noise - 0.1Hz to 10Hz:
- 240µVp-p
- Noise - 10Hz to 10kHz:
- -
- Voltage - Input:
- 2.9V ~ 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-2.5/NOPB FAQ
1.How can I place an order for LM4132DMF-2.5/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4132DMF-2.5/NOPB 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-2.5/NOPB reliable?
The price and inventory of LM4132DMF-2.5/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4132DMF-2.5/NOPB is usually 5 days.
3.What payment methods are accepted for LM4132DMF-2.5/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4132DMF-2.5/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4132DMF-2.5/NOPB?
LM4132DMF-2.5/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4132DMF-2.5/NOPB 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-2.5/NOPB?
For technical support, including LM4132DMF-2.5/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4132DMF-2.5/NOPB requirements.
6.How does Aetrix verify that LM4132DMF-2.5/NOPB is sourced from the original manufacturer or authorized distributors?
All LM4132DMF-2.5/NOPB 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-2.5/NOPB meets industry standards.
7.What is the process for return or replacement of LM4132DMF-2.5/NOPB?
All LM4132DMF-2.5/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM4132DMF-2.5/NOPB, 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-2.5/NOPB part is unused and in its original packaging.
Return procedure for LM4132DMF-2.5/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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