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Texas Instruments LM4132CMF-2.5/NOPB
- Part No.:
- LM4132CMF-2.5/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LM4132CMF-2.5/NOPB.pdf
- Description:
- IC VREF SERIES 0.2% SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:482
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Product details
Overview
LM4132CMF-2.5/NOPB from Texas Instruments is a precision low-dropout (LDO) series voltage reference delivering a stable 2.5 V output with ±0.2% initial accuracy (C-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 current, and features an enable pin for 3 µA shutdown mode-ideal for high-accuracy ADC biasing in portable instrumentation.
For engineers reviewing the LM4132CMF-2.5/NOPB datasheet, LM4132CMF-2.5/NOPB pinout, LM4132CMF-2.5/NOPB application, or LM4132CMF-2.5/NOPB equivalent, key selection criteria include dropout voltage at 10 mA (175 mV typ), 0.1–10 Hz noise (240 µVPP), line regulation (50 ppm/V), thermal hysteresis (75 ppm), and SOT-23-5 package compatibility with low-ESR ceramic capacitors.
Technical Context
The LM4132CMF-2.5/NOPB uses EEPROM-trimmed CMOS bandgap architecture to correct curvature, tempco, and accuracy at package level-overcoming assembly-induced shifts that limit laser-trimmed bipolar references. Its internal LDO regulator eliminates need for output buffer or mandatory COUT, enabling direct drive of ADC reference inputs and DAC bias networks.
Unlike shunt references, it draws only 60 µA under no-load conditions and maintains regulation down to 400 mV input-to-output differential. The EN pin controls full rail-to-rail enable/disable transition with VIH = 65% VIN and VIL = 35% VIN, supporting seamless integration into power-managed systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.5 V ±0.2% (C-grade, 25°C); enables precise 12-bit+ ADC full-scale calibration |
| Tempco | 10 ppm/°C (0°C to 85°C); ensures ≤±0.21 mV drift over industrial range |
| Dropout Voltage | 175 mV (typ, ILOAD = 10 mA); allows operation from 2.675 V supply in battery-powered designs |
| Quiescent Current | 60 µA (typ); supports >1-year runtime on coin-cell in always-on sensor nodes |
| Shutdown Current | 3 µA (typ, EN = 0 V); enables ultra-low-power sleep modes without external switches |
| 0.1–10 Hz Noise | 240 µVPP; meets noise floor requirements for 16-bit SAR and delta-sigma ADCs |
| Line Regulation | 50 ppm/V; limits output shift to <±125 µV across 2.9–5.5 V input range |
Pinout & Package
SOT-23-5 (DBV) package: 2.90 mm × 1.60 mm body, 0.95 mm height, gull-wing leads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | N/C | No-connect; must remain floating-no internal connection or parasitic path |
| 2 | GND | Analog ground reference; requires low-impedance PCB plane tie to minimize noise coupling |
| 3 | EN | Active-high digital enable; transitions fully within 35–65% VIN; no pull-up required |
| 4 | VIN | Input supply; accepts 2.9–5.5 V with ≥400 mV headroom above VREF |
| 5 | VREF | Stable 2.5 V output; capable of sourcing 20 mA; stable with 1 µF ceramic CIN only |
Key Features
| Feature | Design Value |
|---|---|
| EEPROM-trimmed CMOS bandgap | Enables post-assembly correction of tempco and accuracy-eliminates laser trimming cost and yield loss |
| Enable-controlled shutdown | Reduces supply current from 60 µA to 3 µA without external FET or sequencing logic |
| No mandatory output capacitor | Removes COUT BOM item and layout area; simplifies design for space-constrained PCBs |
| Low-ESR capacitor stability | Guaranteed stable with standard 1 µF X7R/X5R ceramics-no tantalum or special low-ESR types needed |
| 20 mA output drive | Directly powers reference inputs of multiple ADCs, DACs, or op-amp bias networks without buffer stage |
Applications
| Portable Data Acquisition | Automotive Sensor Signal Conditioning |
|---|---|
Use Scenario: Handheld multimeter acquiring 16-bit voltage measurements with 100 kSPS sampling. IC Role / Device Role / Timing Role: Primary voltage reference for SAR ADC front-end, providing stable 2.5 V VREF with minimal drift during battery discharge. Use Value: Enables ±0.005% full-scale accuracy over –10°C to +50°C ambient, meeting Class A handheld instrument specs. | Use Scenario: Engine control unit conditioning exhaust gas oxygen (EGO) sensor signals in Tier 1 powertrain module. IC Role / Device Role / Timing Role: Precision bias source for analog front-end op-amps and ADC reference in ASIL-B compliant subsystem. Use Value: Maintains 10 ppm/°C stability across –40°C to +125°C junction range, ensuring consistent sensor gain calibration. |
| Medical Patient Monitor Analog Front-End | Industrial PLC Analog Input Module |
Use Scenario: ECG acquisition system digitizing biopotential signals with 24-bit delta-sigma ADC. IC Role / Device Role / Timing Role: Low-noise reference for ADC and programmable gain amplifier (PGA) bias network. Use Value: 240 µVPP (0.1–10 Hz) noise contributes <0.5 LSB error in 24-bit conversion, preserving diagnostic resolution. | Use Scenario: Modular I/O card converting 4–20 mA field signals to digital with isolated 16-bit ADC. IC Role / Device Role / Timing Role: Stable reference for isolated sigma-delta modulator and on-board calibration DAC. Use Value: ±0.2% initial accuracy and 75 ppm thermal hysteresis ensure <±0.1% span error after thermal cycling in factory calibration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REF3025AIDBZR | Fixed 2.5 V, ±0.2% initial accuracy, 50 ppm/°C tempco, 50 µA IQ, SOT-23-3, no enable pin | Lacks shutdown control; requires external switch for low-power sleep; lower drive (10 mA) | Select when board space is critical and enable functionality is unnecessary |
| ADR3425ARJZ-R7 | Fixed 2.5 V, ±0.1% initial accuracy, 10 ppm/°C tempco, 120 µA IQ, SOT-23-5, no enable pin | Higher accuracy but no enable; higher quiescent current reduces battery life in portable use | Select when highest initial accuracy is prioritized over power and control flexibility |
Compared with REF3025AIDBZR and ADR3425ARJZ-R7, the LM4132CMF-2.5/NOPB uniquely combines C-grade accuracy, enable control, 20 mA drive, and ultra-low dropout-making it optimal for space- and power-constrained systems requiring dynamic power management.
Availability
LM4132CMF-2.5/NOPB is available at Aetrix Electronics and suitable for portable instrumentation, automotive sensor modules, medical patient monitors, and industrial PLC analog input circuits requiring stable component supply with guaranteed long-term continuity.
Supply support for LM4132CMF-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 leader specializing in analog, embedded processing, and connectivity technologies, with decades of leadership in precision analog ICs.
The LM4132 family was designed to deliver laser-trimmed bipolar reference performance using cost-effective, EEPROM-programmable CMOS technology-targeting high-accuracy data acquisition, test equipment, and safety-critical automotive applications.
FAQ
What is the maximum load current supported by the LM4132CMF-2.5/NOPB?
The LM4132CMF-2.5/NOPB delivers up to 20 mA of output current while maintaining regulation and specified accuracy. This capability allows direct driving of multiple ADC reference inputs or op-amp bias networks without external buffers-reducing component count and board area in compact designs where the LM4132CMF-2.5/NOPB serves as the primary precision reference.
Does the LM4132CMF-2.5/NOPB require an output capacitor for stability?
No, the LM4132CMF-2.5/NOPB is internally compensated and stable with only the required 1 µF input capacitor (CIN). An output capacitor (COUT) is optional and not needed for stability-unlike many competing references. This simplifies layout, reduces BOM cost, and avoids potential phase-margin issues associated with COUT selection in the LM4132CMF-2.5/NOPB design.
What is the dropout voltage specification for the LM4132CMF-2.5/NOPB at 10 mA load?
The dropout voltage for the LM4132CMF-2.5/NOPB is 175 mV (typical) at 10 mA load and 25°C. Over the full temperature range (–40°C to +125°C), it remains ≤400 mV. This low dropout enables reliable operation from supplies as low as 2.675 V, making the LM4132CMF-2.5/NOPB especially suitable for single-cell Li-ion or two-cell alkaline battery-powered systems.
How does the enable pin function on the LM4132CMF-2.5/NOPB?
The EN pin on the LM4132CMF-2.5/NOPB is an active-high digital control input with VIH = 65% VIN and VIL = 35% VIN. When pulled high, the device operates normally; when pulled low, it enters 3 µA shutdown mode. No external pull-up is required, and the pin tolerates full VIN range-enabling direct interface with microcontroller GPIOs in the LM4132CMF-2.5/NOPB's host system.
Is the LM4132CMF-2.5/NOPB qualified for automotive applications?
The LM4132CMF-2.5/NOPB is not the automotive-grade variant; it is the commercial-grade part. For automotive use, TI offers the LM4132QCMF-2.5/NOPB (AEC-Q100 Grade 1, –40°C to +125°C). While the LM4132CMF-2.5/NOPB shares identical electrical specs, it is characterized and screened for commercial temperature range (0°C to +70°C) and lacks automotive qualification documentation required for vehicle ECUs.
LM4132CMF-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:
- ±0.2%
- 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
LM4132CMF-2.5/NOPB FAQ
1.How can I place an order for LM4132CMF-2.5/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4132CMF-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 LM4132CMF-2.5/NOPB reliable?
The price and inventory of LM4132CMF-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 LM4132CMF-2.5/NOPB is usually 5 days.
3.What payment methods are accepted for LM4132CMF-2.5/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4132CMF-2.5/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4132CMF-2.5/NOPB?
LM4132CMF-2.5/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4132CMF-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 LM4132CMF-2.5/NOPB?
For technical support, including LM4132CMF-2.5/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4132CMF-2.5/NOPB requirements.
6.How does Aetrix verify that LM4132CMF-2.5/NOPB is sourced from the original manufacturer or authorized distributors?
All LM4132CMF-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 LM4132CMF-2.5/NOPB meets industry standards.
7.What is the process for return or replacement of LM4132CMF-2.5/NOPB?
All LM4132CMF-2.5/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM4132CMF-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 LM4132CMF-2.5/NOPB part is unused and in its original packaging.
Return procedure for LM4132CMF-2.5/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM4132CMF-2.5/NOPB Tags
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