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Texas Instruments LM4132AMF-2.0/NOPB
- Part No.:
- LM4132AMF-2.0/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LM4132AMF-2.0/NOPB.pdf
- Description:
- IC VREF SERIES 0.05% SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:641
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Product details
Overview
LM4132AMF-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, 10 ppm/°C temperature coefficient (0°C to 85°C), and 60 µA quiescent current. It features an enable pin for 3 µA shutdown mode, supports up to 20 mA load current, and operates from VIN = VREF + 400 mV to 5.5 V - ideal for high-accuracy ADC/DAC biasing in portable instrumentation.
For engineers reviewing the LM4132AMF-2.0/NOPB datasheet, LM4132AMF-2.0/NOPB pinout, LM4132AMF-2.0/NOPB application, or LM4132AMF-2.0/NOPB equivalent, key selection criteria include initial voltage tolerance, tempco over automotive-grade temperature range (–40°C to +125°C), dropout voltage at 10 mA (175 mV typical), enable logic thresholds (VIH = 65% VIN, VIL = 35% VIN), and stability with low-ESR ceramic capacitors without requiring output buffering.
Technical Context
The LM4132AMF-2.0/NOPB uses EEPROM-trimmed CMOS band-gap architecture to correct curvature, tempco, and accuracy at package level - overcoming assembly-induced shifts that limit laser-trimmed bipolar references. Its internal LDO regulator topology enables series operation with no mandatory output capacitor, unlike shunt references.
This device implements a dedicated enable input (pin 3) that controls a high-impedance shutdown state, reducing supply current to 3 µA while maintaining fast turn-on response. The 5-pin SOT-23 package integrates VIN, GND, EN, VREF, and N/C pins - with no connect (N/C) on pin 1 ensuring layout compatibility across the LM4132 family.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.048 V ±0.05% (A-grade initial accuracy at 25°C; enables 12-bit DAC/ADC full-scale calibration) |
| Tempco | 10 ppm/°C (0°C to 85°C); 20 ppm/°C (–40°C to +125°C) - ensures ≤±0.25% drift over full automotive range |
| Dropout Voltage | 175 mV (typical at 10 mA load); allows operation from 2.223 V input - critical for single-cell Li-ion or 3.3 V rail-powered systems |
| Quiescent Current | 60 µA (active); 3 µA (shutdown) - extends battery life in always-on sensor nodes and portable test gear |
| Load Regulation | 25 ppm/mA (0–20 mA); <±50 µV change per mA - maintains reference integrity under dynamic load conditions |
| Line Regulation | 30 ppm/V (VREF + 400 mV to 5.5 V); rejects input ripple without external filtering |
| Output Noise | 190 µVPP (0.1 Hz to 10 Hz); supports high-resolution metrology-grade measurements |
Pinout & Package
SOT-23 (DBV) 5-pin plastic package, 2.90 mm × 1.60 mm body size, with exposed pad not electrically connected. Pin 1 is no-connect (N/C) and must remain floating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (N/C) | No-connect | Unused internal node; must be left unconnected to avoid parasitic coupling or ESD path disruption |
| 2 (GND) | Ground reference | Primary return path for reference output and internal circuitry; requires low-impedance PCB connection to minimize noise injection |
| 3 (EN) | Enable control input | Active-high digital input; VIH ≥65% VIN enables regulation, VIL ≤35% VIN forces 3 µA shutdown - compatible with 1.8 V/3.3 V logic |
| 4 (VIN) | Input supply | Accepts 2.448 V to 5.5 V; minimum headroom of 400 mV above VREF ensures regulation stability under all loads |
| 5 (VREF) | Precision output | Low-impedance 2.048 V source capable of sourcing/sinking ±20 mA; no buffer amplifier required |
Key Features
| Feature | Design Value |
|---|---|
| EEPROM-based trimming | Corrects curvature, tempco, and initial accuracy at package level - eliminates post-assembly re-trimming and improves yield |
| Enable-controlled shutdown | Reduces IQ to 3 µA while preserving output voltage settling time <10 µs on wake-up - suitable for duty-cycled data loggers |
| No output capacitor required | Stable with 0.1 µF ceramic COUT (optional); removes BOM cost and board space for bulk capacitance in space-constrained designs |
| Automotive qualification | AEC-Q100 Grade 1 (–40°C to +125°C ambient) and HBM ESD Level 2 (±2 kV) - validated for under-hood and infotainment applications |
| Low-noise architecture | 190 µVPP (0.1–10 Hz) enables direct use in 16-bit+ SAR and delta-sigma ADC reference paths without additional filtering |
Applications
| Portable Data Acquisition | Automotive Sensor Signal Conditioning |
|---|---|
Use Scenario: Handheld multimeter acquiring 16-bit voltage readings from thermocouples and RTDs. IC Role / Device Role / Timing Role: Primary voltage reference for dual-slope and sigma-delta ADC front-end, providing excitation and measurement基准. Use Value: 10 ppm/°C tempco and 190 µVPP noise ensure <±0.01% measurement error across –10°C to +50°C operating range without recalibration. |
Use Scenario: Engine control unit conditioning signals from knock, MAP, and coolant temperature sensors. IC Role / Device Role / Timing Role: Stable bias source for analog signal chains feeding 12-bit ADCs in ASIL-B subsystems. Use Value: AEC-Q100 Grade 1 rating and 20 ppm/°C tempco over –40°C to +125°C guarantee consistent sensor gain/offset compensation across full vehicle thermal envelope. |
| Industrial PLC Analog Input Modules | Battery-Powered Medical Instrumentation |
Use Scenario: DIN-rail mounted I/O module digitizing 4–20 mA and 0–10 V field signals with galvanic isolation. IC Role / Device Role / Timing Role: Precision reference for isolated ΣΔ ADCs and programmable gain amplifiers in multi-channel acquisition. Use Value: 60 µA quiescent current and 20 mA drive capability allow local regulation per channel without shared LDO overhead or external buffers. |
Use Scenario: Portable ECG monitor performing real-time waveform analysis on coin-cell power. IC Role / Device Role / Timing Role: Reference for 12-bit ADC sampling lead-II differential voltage at 1 kHz with >80 dB SNR. Use Value: 3 µA shutdown current during sleep mode extends 200-hour battery life; fast wake-up (<10 µs) enables responsive patient-triggered recording. |
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 output; 50 ppm/°C max tempco (–40°C to +125°C); 50 µA IQ; no enable pin | Lacks shutdown control and has higher tempco - suitable only for non-automotive, low-cost, always-on applications | Select when enable functionality and Grade 1 tempco are unnecessary and BOM cost is primary constraint |
| ADR3420ARJZ-R7 | 2.048 V output; 10 ppm/°C max tempco; 120 µA IQ; no enable; SOT-23-5 pinout differs (VOUT on pin 1, GND on pin 2) | Higher quiescent current and incompatible pin mapping require PCB redesign; no shutdown mode limits battery use | Choose only if existing design already uses ADR34xx footprint and shutdown is not required |
Compared with REF3020AIDBZR and ADR3420ARJZ-R7, the LM4132AMF-2.0/NOPB uniquely combines AEC-Q100 Grade 1 qualification, enable-controlled 3 µA shutdown, and 10 ppm/°C tempco in a pin-compatible SOT-23-5 package - making it the sole option for automotive or portable high-accuracy systems requiring dynamic power management.
Availability
LM4132AMF-2.0/NOPB is available at Aetrix Electronics and suitable for portable instrumentation, automotive sensor modules, and industrial PLC analog input circuits requiring stable component supply with guaranteed long-term availability and traceable sourcing.
Supply support for LM4132AMF-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 headquartered in Dallas, Texas, specializing in analog and embedded processing technologies with leadership in precision analog ICs and automotive-grade components.
The LM4132 product line delivers high-accuracy, low-power voltage references using EEPROM-trimmed CMOS band-gap architecture - designed specifically for applications demanding laser-trimmed performance at CMOS cost, including battery-powered test equipment and safety-critical automotive subsystems.
FAQ
What is the maximum load current supported by the LM4132AMF-2.0/NOPB?
The LM4132AMF-2.0/NOPB supports up to 20 mA of continuous 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 applications, directly driving ADC reference inputs, op-amp bias networks, or DAC feedback paths without degradation.
Does the LM4132AMF-2.0/NOPB require an output capacitor for stability?
No, the LM4132AMF-2.0/NOPB is internally compensated and stable with no output capacitor required. A 0.1 µF ceramic capacitor (COUT) is optional and may be added to further reduce high-frequency noise, but it is not necessary for loop stability - simplifying layout and reducing BOM count in space-constrained designs.
What is the dropout voltage specification for the LM4132AMF-2.0/NOPB at 10 mA load?
The dropout voltage for the LM4132AMF-2.0/NOPB is 175 mV typical and 400 mV maximum at 10 mA load and over the full –40°C to +125°C temperature range. This low dropout enables operation from as low as 2.223 V input, supporting single-cell Li-ion (2.7–4.2 V) and regulated 3.3 V supply rails without headroom margin loss.
How does the enable pin function on the LM4132AMF-2.0/NOPB?
The enable (EN) pin on the LM4132AMF-2.0/NOPB is active-high: applying ≥65% of VIN turns on regulation, while ≤35% of VIN places the device in 3 µA shutdown mode. This logic-level compatible control allows direct interfacing with microcontrollers and FPGAs, enabling precise power sequencing and ultra-low-power sleep states in portable systems.
Is the LM4132AMF-2.0/NOPB qualified for automotive applications?
Yes, the LM4132AMF-2.0/NOPB is AEC-Q100 qualified for Automotive Grade 1 (–40°C to +125°C ambient), with HBM ESD rating of ±2 kV. It meets stringent reliability and parametric stability requirements for engine control, ADAS sensor interfaces, and infotainment subsystems - confirmed in TI's official LM4132-Q1 documentation and production test flow.
LM4132AMF-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:
- ±0.05%
- 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
LM4132AMF-2.0/NOPB FAQ
1.How can I place an order for LM4132AMF-2.0/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4132AMF-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 LM4132AMF-2.0/NOPB reliable?
The price and inventory of LM4132AMF-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 LM4132AMF-2.0/NOPB is usually 5 days.
3.What payment methods are accepted for LM4132AMF-2.0/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4132AMF-2.0/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4132AMF-2.0/NOPB?
LM4132AMF-2.0/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4132AMF-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 LM4132AMF-2.0/NOPB?
For technical support, including LM4132AMF-2.0/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4132AMF-2.0/NOPB requirements.
6.How does Aetrix verify that LM4132AMF-2.0/NOPB is sourced from the original manufacturer or authorized distributors?
All LM4132AMF-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 LM4132AMF-2.0/NOPB meets industry standards.
7.What is the process for return or replacement of LM4132AMF-2.0/NOPB?
All LM4132AMF-2.0/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM4132AMF-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 LM4132AMF-2.0/NOPB part is unused and in its original packaging.
Return procedure for LM4132AMF-2.0/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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