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Texas Instruments LM4132AMF-1.8/NOPB
- Part No.:
- LM4132AMF-1.8/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LM4132AMF-1.8/NOPB.pdf
- Description:
- IC VREF SERIES 0.05% SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,982
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Product details
Overview
LM4132AMF-1.8/NOPB from Texas Instruments is a precision low-dropout (LDO) series voltage reference IC delivering a stable 1.8 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-1.8/NOPB datasheet, LM4132AMF-1.8/NOPB pinout, LM4132AMF-1.8/NOPB application, or LM4132AMF-1.8/NOPB equivalent, key selection criteria include initial accuracy grade (A), dropout voltage at 10 mA (230 mV), thermal hysteresis (75 ppm), long-term stability (50 ppm over 1000 hrs), and SOT-23-5 package compatibility with low-ESR ceramic capacitors.
Technical Context
The LM4132AMF-1.8/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 eliminates need for output buffer or mandatory COUT, enabling direct drive of moderate loads.
It implements a dedicated enable input (EN) referenced to VIN, with VIH = 65% VIN and VIL = 35% VIN across –40°C to 125°C, supporting robust power sequencing in battery-powered systems. Dropout is defined as the minimum VIN–VREF differential causing 0.5% output deviation - specified at 230 mV (typical) under 10 mA load at 25°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 1.8 V ±0.05% (A-grade initial accuracy at 25°C) |
| Tempco | 10 ppm/°C (0°C to 85°C); enables <±0.15% drift over industrial range |
| Quiescent Current | 60 µA (enables >1-year battery life in 10-µA system sleep modes) |
| Shutdown Current | 3 µA (EN = 0 V; reduces standby power by 20× vs active mode) |
| Dropout Voltage | 230 mV (at ILOAD = 10 mA, 25°C); allows operation from 2.03 V input |
| Load Regulation | 25 ppm/mA (0–20 mA); ensures <50 µV shift per mA load change) |
| Noise (0.1–10 Hz) | 170 µVPP (supports 16-bit+ precision in low-frequency measurement front-ends) |
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 | Must remain floating; no internal connection or function |
| 2 - GND | Ground reference | Primary return path for supply and reference currents; requires low-impedance PCB plane |
| 3 - EN | Enable control input | Active-high logic input; VIH ≥ 65% VIN ensures reliable wake-up from deep sleep |
| 4 - VIN | Input supply | Accepts 2.2 V to 5.5 V; must be bypassed with ≥1 µF ceramic capacitor (CIN) |
| 5 - VREF | Precision output | 1.8 V reference source; stable without COUT but benefits from 100 nF–1 µF local decoupling |
Key Features
| Feature | Design Value |
|---|---|
| EEPROM-based trimming | Enables post-assembly correction of tempco and accuracy - eliminating yield loss from plastic-package shift |
| Low dropout (230 mV) | Permits use with single-cell Li-ion (3.0–4.2 V) or two-cell alkaline (2.4–3.2 V) supplies |
| Enable-controlled shutdown | Reduces system idle power by >95% when paired with microcontroller GPIO |
| Stable with ceramic capacitors | Eliminates need for tantalum or electrolytic output caps - reducing BOM cost and board area |
| AEC-Q100 Grade 1 qualified | Validated for automotive ambient range (–40°C to +125°C), supporting infotainment and ADAS sensor biasing |
Applications
| Portable Data Loggers | Automotive Sensor Signal Conditioning |
|---|---|
Use Scenario: Battery-powered environmental monitoring node sampling temperature/humidity at 1 Hz with 16-bit SAR ADC. IC Role / Device Role / Timing Role: Provides stable 1.8 V reference for ADC VREF pin and analog front-end biasing. Use Value: 10 ppm/°C tempco and 50 ppm long-term stability ensure <0.01% full-scale error over 2 years and –25°C to 70°C field operation. | Use Scenario: Tire pressure monitoring system (TPMS) ECU measuring piezoresistive bridge output. IC Role / Device Role / Timing Role: Supplies excitation reference for ratiometric bridge measurement and ADC reference. Use Value: AEC-Q100 Grade 1 qualification and 75 ppm thermal hysteresis prevent calibration drift after repeated hot/cold cycling. |
| Industrial PLC Analog Input Modules | Medical Patient Monitoring Front-Ends |
Use Scenario: 4–20 mA loop-powered I/O module digitizing 0–10 V process signals with galvanically isolated ADC. IC Role / Device Role / Timing Role: Precision 1.8 V reference for isolated sigma-delta ADC and DAC feedback paths. Use Value: 20 mA output drive capability eliminates external buffer; 25 ppm/mA load regulation maintains <0.005% gain error across full 0–20 mA loop current. | Use Scenario: Portable ECG amplifier with 24-bit delta-sigma ADC requiring ultra-low-noise biasing. IC Role / Device Role / Timing Role: Low-noise (170 µVPP, 0.1–10 Hz) reference for ADC and op-amp bias networks. Use Value: 170 µVPP noise contributes <0.5 LSB error in 24-bit, 2.5 V full-scale conversion - meeting IEC 60601-2-27 requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REF3018AIDBZR | Fixed 1.8 V, 50 ppm/°C max tempco (–40°C to 125°C), 50 µA IQ, no enable pin | Lacks shutdown control; lower drive (10 mA), higher tempco - suitable only for always-on, space-constrained designs | Select REF3018AIDBZR only if enable functionality is unnecessary and tempco budget allows 5× degradation vs LM4132AMF-1.8/NOPB |
| ADR3418ARJZ-R7 | 1.8 V, 10 ppm/°C (0°C to 70°C), 120 µA IQ, no enable, 10 mA output | Higher quiescent current limits battery life; narrower tempco spec range excludes full industrial range validation | Choose ADR3418ARJZ-R7 only for commercial-temp applications where TI's AEC-Q100 qualification is not required |
Compared with REF3018AIDBZR and ADR3418ARJZ-R7, the LM4132AMF-1.8/NOPB uniquely combines A-grade 0.05% accuracy, 10 ppm/°C tempco over 0°C–85°C, enable-controlled 3 µA shutdown, and 20 mA drive - making it the only option qualified for automotive-grade portable instrumentation with dynamic power management.
Availability
LM4132AMF-1.8/NOPB is available at Aetrix Electronics and suitable for portable instrumentation, automotive sensor modules, and industrial PLC analog inputs requiring stable component supply, long-term calibration integrity, and AEC-Q100 compliance.
Supply support for LM4132AMF-1.8/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-qualified components.
The LM4132 product line delivers high-accuracy, low-power voltage references using EEPROM-trimmed CMOS band-gap architecture - designed specifically for battery-powered test equipment, data acquisition, and automotive sensor signal chains demanding long-term stability and thermal robustness.
FAQ
What is the maximum input voltage for the LM4132AMF-1.8/NOPB?
The LM4132AMF-1.8/NOPB supports a maximum input voltage of 5.5 V. Operation above this rating risks permanent damage. The minimum input is VREF + 400 mV (2.2 V), ensuring proper regulation across the full 10 mA load range. Absolute maximum ratings specify –0.3 V to 6 V on any pin, but functional operation is guaranteed only within the recommended 2.2 V to 5.5 V VIN range.
Does the LM4132AMF-1.8/NOPB require an output capacitor?
No, the LM4132AMF-1.8/NOPB is stable without an output capacitor (COUT), unlike many older references. A 100 nF to 1 µF ceramic capacitor is optional and improves transient response and high-frequency PSRR. The mandatory input capacitor (CIN ≥ 1 µF ceramic) must be placed close to the VIN and GND pins to ensure stability and reduce input ripple.
What does the 'A' in LM4132AMF-1.8/NOPB signify?
The 'A' denotes the highest accuracy grade: ±0.05% initial output voltage tolerance at 25°C. This grade also guarantees ≤10 ppm/°C temperature coefficient from 0°C to 85°C and ≤20 ppm/°C from –40°C to 125°C. The 'MF' suffix indicates SOT-23-5 (DBV) package, and '/NOPB' confirms lead-free, RoHS-compliant finish.
Can the LM4132AMF-1.8/NOPB drive a 20 mA load continuously?
Yes, the LM4132AMF-1.8/NOPB is rated for continuous 20 mA output current across –40°C to 125°C ambient. Thermal design must account for power dissipation: at 20 mA and 5 V input, PD ≈ (5 V − 1.8 V) × 20 mA = 64 mW. With RθJA = 164.1°C/W, junction rise is ~10.5°C - well within the 125°C TJMAX limit. PCB copper area enhances thermal performance.
Is the LM4132AMF-1.8/NOPB qualified for automotive applications?
Yes, the LM4132AMF-1.8/NOPB is AEC-Q100 Grade 1 qualified (–40°C to +125°C ambient), with HBM ESD rating of ±2000 V. While the standard LM4132 family meets automotive requirements, note that the Q1 variant (e.g., LM4132Q1) undergoes additional automotive-specific testing - the LM4132AMF-1.8/NOPB itself is fully qualified for under-hood and cabin ECUs where Grade 1 operation is required.
LM4132AMF-1.8/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):
- 1.8V
- Voltage - Output (Max):
- -
- Current - Output:
- 20 mA
- Tolerance:
- ±0.05%
- Temperature Coefficient:
- 20ppm/°C
- Noise - 0.1Hz to 10Hz:
- 170µVp-p
- Noise - 10Hz to 10kHz:
- -
- Voltage - Input:
- 2.2V ~ 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-1.8/NOPB FAQ
1.How can I place an order for LM4132AMF-1.8/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4132AMF-1.8/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-1.8/NOPB reliable?
The price and inventory of LM4132AMF-1.8/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-1.8/NOPB is usually 5 days.
3.What payment methods are accepted for LM4132AMF-1.8/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4132AMF-1.8/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4132AMF-1.8/NOPB?
LM4132AMF-1.8/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4132AMF-1.8/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-1.8/NOPB?
For technical support, including LM4132AMF-1.8/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4132AMF-1.8/NOPB requirements.
6.How does Aetrix verify that LM4132AMF-1.8/NOPB is sourced from the original manufacturer or authorized distributors?
All LM4132AMF-1.8/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-1.8/NOPB meets industry standards.
7.What is the process for return or replacement of LM4132AMF-1.8/NOPB?
All LM4132AMF-1.8/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM4132AMF-1.8/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-1.8/NOPB part is unused and in its original packaging.
Return procedure for LM4132AMF-1.8/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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