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Texas Instruments LM4132DMFX-2.0/NOPB
- Part No.:
- LM4132DMFX-2.0/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LM4132DMFX-2.0/NOPB.pdf
- Description:
- IC VREF SERIES 0.4% SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,997
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Product details
Overview
LM4132DMFX-2.0/NOPB from Texas Instruments is a precision low-dropout (LDO) series voltage reference IC delivering a stable 2.048 V output with ±0.05% initial accuracy (A-grade), 10 ppm/°C temperature coefficient (0°C to 85°C), and 60 µA quiescent current - enabling high-accuracy ADC/DAC biasing in portable instrumentation and battery-powered data acquisition systems.
For engineers reviewing the LM4132DMFX-2.0/NOPB datasheet, LM4132DMFX-2.0/NOPB pinout, LM4132DMFX-2.0/NOPB application, or LM4132DMFX-2.0/NOPB equivalent, key selection considerations include its SOT-23-5 package, enable-controlled 3 µA shutdown mode, 20 mA output drive capability, dropout as low as 175 mV at 10 mA, and stability with low-ESR ceramic capacitors without requiring an output buffer.
Technical Context
The LM4132DMFX-2.0/NOPB implements a CMOS band-gap architecture with EEPROM-based curvature, tempco, and accuracy trimming performed at package level - overcoming assembly-induced shifts that limit laser-trimmed bipolar references. This enables A-grade performance in cost-effective plastic packaging.
It operates as a series reference with active enable control (EN pin), supports input voltages from (VREF + 400 mV) to 5.5 V, and delivers regulated 2.048 V output without mandatory output capacitance - distinguishing it from shunt references and older LDO references requiring external buffers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.048 V ±0.05% (A-grade, 25°C); precise match for 12-bit DACs/ADCs using 2.048 V full-scale reference |
| Tempco | 10 ppm/°C (0°C to 85°C); ensures ≤0.085% output drift over industrial temperature range |
| Dropout Voltage | 175 mV at 10 mA load; allows operation from 2.223 V supply - critical for single-cell Li-ion or 2.5 V rail systems |
| Quiescent Current | 60 µA typical; enables >1-year battery life in always-on sensor nodes drawing <10 µA average |
| Shutdown Current | 3 µA at EN = 0 V; reduces standby power by 20× versus active mode for intermittent measurement systems |
| Output Drive | 20 mA sink/source; directly drives ADC reference inputs, op-amp bias networks, or small DAC loads without buffering |
| Noise (0.1–10 Hz) | 190 µVPP; low enough to avoid degrading ENOB in 16-bit SAR ADCs with ≥1 MSPS sampling |
Pinout & Package
SOT-23-5 (DBV) package: 2.90 mm × 1.60 mm body, 0.95 mm height, gull-wing leads; compatible with standard pick-and-place and reflow processes.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - N/C | No-connect | Internally unconnected; must be left floating - no tie to GND or VIN |
| 2 - GND | Ground reference | Primary return path for reference output and internal circuitry; requires low-impedance PCB connection |
| 3 - EN | Enable control input | Active-high logic: VIH ≥ 65% VIN enables output; VIL ≤ 35% VIN forces 3 µA shutdown |
| 4 - VIN | Input supply | Accepts 2.448 V to 5.5 V; minimum headroom = 400 mV above VREF for regulation |
| 5 - VREF | Precision output | 2.048 V regulated source; capable of sourcing/sinking up to 20 mA with <25 ppm/mA load regulation |
Key Features
| Feature | Design Value |
|---|---|
| EEPROM-trimmed CMOS band-gap | Enables A-grade accuracy (0.05%) and low tempco in plastic SOT-23 - eliminates need for expensive laser trimming or hermetic packaging |
| Enable pin with logic-compatible thresholds | Allows microcontroller-driven power gating; eliminates external MOSFET switches and associated BOM cost |
| No mandatory output capacitor | Stable with 0 µF COUT when driving resistive or moderate capacitive loads - simplifies layout and reduces component count |
| 20 mA output current capability | Directly powers reference inputs of multiple precision ADCs/DACs or bias networks - avoids external op-amp buffers |
| Low 190 µVPP (0.1–10 Hz) noise | Preserves dynamic range in precision measurement front-ends where 1/f noise dominates error budget |
Applications
| Portable Data Loggers | Automotive Cabin Sensors |
|---|---|
Use Scenario: Battery-powered environmental monitors logging temperature, humidity, and pressure at 10-second intervals for 5+ years on a single CR2032 cell. IC Role / Device Role / Timing Role: Provides stable 2.048 V reference for 16-bit sigma-delta ADC measuring sensor bridge outputs. Use Value: 60 µA quiescent current and 3 µA shutdown extend battery life; 10 ppm/°C tempco maintains ±0.02% reading accuracy across –20°C to 70°C cabin temperatures. |
Use Scenario: Occupant detection system using capacitive sensing and analog front-end in automotive seat modules. IC Role / Device Role / Timing Role: Supplies precision reference to analog signal conditioning chain feeding vehicle CAN bus ADC interface. Use Value: AEC-Q100 Grade 1 qualification (–40°C to +125°C) ensures reliability; 20 mA drive supports simultaneous biasing of multiple op-amps and comparators. |
| Industrial PLC Analog Input Modules | Medical Patient Monitoring Front-Ends |
Use Scenario: DIN-rail mounted I/O module converting 4–20 mA field signals to digital via 18-bit SAR ADCs. IC Role / Device Role / Timing Role: Delivers low-noise 2.048 V reference for dual-channel simultaneous-sampling ADCs with independent PGA stages. Use Value: 190 µVPP noise and 25 ppm/mA load regulation prevent gain error drift during channel switching and varying sensor loading. |
Use Scenario: Portable ECG device acquiring biopotential signals with 100 dB SNR requirement and 5-day battery runtime. IC Role / Device Role / Timing Role: References the instrumentation amplifier and 24-bit delta-sigma ADC in the analog signal path. Use Value: Long-term stability of 50 ppm over 1000 hours prevents calibration drift between patient sessions; low dropout enables use with 2.5 V LDO rails. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REF3020AIDBZR | Fixed 2.048 V, 50 ppm/°C max tempco (–40°C to 125°C), 50 µA IQ, no enable pin, SOT-23-3 | Lacks shutdown control and has higher tempco; limited to always-on, space-constrained designs where enable is unnecessary | Select when board area is critical and continuous operation is acceptable - saves one PCB trace but forfeits power gating |
| ADR3420ARJZ-R7 | 2.048 V, 10 ppm/°C (–40°C to +125°C), 120 µA IQ, no enable, SOT-23-5 with different pinout (GND/VIN/VOUT/NC/NC) | Higher quiescent current and no enable function; pinout incompatible - requires layout change and firmware update to remove EN control | Choose for extended temperature stability where shutdown is not required and higher IQ is tolerable in mains-powered systems |
Compared with REF3020AIDBZR and ADR3420ARJZ-R7, the LM4132DMFX-2.0/NOPB uniquely combines A-grade tempco, enable functionality, and 20 mA drive in a standard SOT-23-5 footprint - making it optimal for battery-critical, intermittently active precision measurement systems where layout reuse and feature completeness matter.
Availability
LM4132DMFX-2.0/NOPB is available at Aetrix Electronics and suitable for portable instrumentation, automotive cabin sensors, and industrial PLC analog input modules requiring stable component supply with guaranteed long-term availability and TI-authorized traceability.
Supply support for LM4132DMFX-2.0/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, power management, and signal chain solutions.
The LM4132 family was designed to deliver laser-trimmed reference performance using cost-effective CMOS and EEPROM trimming - targeting high-accuracy data acquisition, test equipment, and battery-powered instrumentation where size, power, and stability are critical.
FAQ
What is the output voltage tolerance and temperature coefficient of the LM4132DMFX-2.0/NOPB?
The LM4132DMFX-2.0/NOPB is an A-grade device with ±0.05% initial output voltage accuracy at 25°C and a temperature coefficient of 10 ppm/°C over 0°C to 85°C. Over the full –40°C to +125°C range, tempco is specified at 20 ppm/°C. These values are production-tested and guaranteed per TI's SNVS372G datasheet.
Does the LM4132DMFX-2.0/NOPB require an output capacitor for stability?
No, the LM4132DMFX-2.0/NOPB is internally compensated and stable without an output capacitor under typical resistive or moderate capacitive loads. A 1 µF ceramic capacitor (COUT) may be added to further reduce high-frequency noise, but it is optional - unlike many older references that mandate minimum COUT for phase margin.
What is the minimum input voltage required for the LM4132DMFX-2.0/NOPB to regulate properly?
The LM4132DMFX-2.0/NOPB requires a minimum input-to-output differential of 400 mV for regulation. With a nominal 2.048 V output, VIN must be ≥2.448 V. At 10 mA load, the dropout voltage is 175 mV (typical), allowing reliable operation down to 2.223 V input while maintaining 0.5% output accuracy.
How does the enable pin (EN) function on the LM4132DMFX-2.0/NOPB?
The EN pin is active-high with logic thresholds referenced to VIN: VIH ≥ 65% VIN enables regulation; VIL ≤ 35% VIN places the LM4132DMFX-2.0/NOPB in 3 µA shutdown mode. No external pull-up/down is required - direct GPIO control from 1.8 V, 3.3 V, or 5 V MCUs is supported.
Is the LM4132DMFX-2.0/NOPB qualified for automotive applications?
No - the LM4132DMFX-2.0/NOPB is the commercial-grade variant. For automotive use, TI offers the LM4132QDBVR (LM4132-Q1), which is AEC-Q100 Grade 1 qualified (–40°C to +125°C ambient), with identical electrical specs but additional automotive-specific testing and traceability.
LM4132DMFX-2.0/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):
- 2.048V
- Voltage - Output (Max):
- -
- Current - Output:
- 20 mA
- Tolerance:
- ±0.4%
- Temperature Coefficient:
- 20ppm/°C
- Noise - 0.1Hz to 10Hz:
- 190µVp-p
- Noise - 10Hz to 10kHz:
- -
- Voltage - Input:
- 2.448V ~ 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
LM4132DMFX-2.0/NOPB FAQ
1.How can I place an order for LM4132DMFX-2.0/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4132DMFX-2.0/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 LM4132DMFX-2.0/NOPB reliable?
The price and inventory of LM4132DMFX-2.0/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4132DMFX-2.0/NOPB is usually 5 days.
3.What payment methods are accepted for LM4132DMFX-2.0/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4132DMFX-2.0/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4132DMFX-2.0/NOPB?
LM4132DMFX-2.0/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4132DMFX-2.0/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 LM4132DMFX-2.0/NOPB?
For technical support, including LM4132DMFX-2.0/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4132DMFX-2.0/NOPB requirements.
6.How does Aetrix verify that LM4132DMFX-2.0/NOPB is sourced from the original manufacturer or authorized distributors?
All LM4132DMFX-2.0/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 LM4132DMFX-2.0/NOPB meets industry standards.
7.What is the process for return or replacement of LM4132DMFX-2.0/NOPB?
All LM4132DMFX-2.0/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM4132DMFX-2.0/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 LM4132DMFX-2.0/NOPB part is unused and in its original packaging.
Return procedure for LM4132DMFX-2.0/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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