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Texas Instruments LM4132CMF-1.8/NOPB
- Part No.:
- LM4132CMF-1.8/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LM4132CMF-1.8/NOPB.pdf
- Description:
- IC VREF SERIES 0.2% SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:895
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Product details
Overview
LM4132CMF-1.8/NOPB from Texas Instruments is a precision low-dropout (LDO) series voltage reference IC delivering a stable 1.8 V output with 0.2% initial accuracy (C grade), 20 ppm/°C temperature coefficient over –40°C to +125°C, 60 µA supply current, and 230 mV dropout at 10 mA load. It serves as a high-stability reference in ADC/DAC biasing, sensor excitation, and portable instrumentation.
For engineers reviewing the LM4132CMF-1.8/NOPB datasheet, LM4132CMF-1.8/NOPB pinout, LM4132CMF-1.8/NOPB application, or LM4132CMF-1.8/NOPB equivalent, key selection criteria include its SOT-23-5 package, enable-controlled shutdown (3 µA), ±75 ppm thermal hysteresis, 170 µVPP (0.1–10 Hz) output noise, and compatibility with low-ESR ceramic capacitors without requiring an output buffer.
Technical Context
The LM4132CMF-1.8/NOPB uses EEPROM-trimmed CMOS bandgap architecture to correct curvature, tempco, and initial accuracy at package level-overcoming assembly-induced shifts that limit laser-trimmed bipolar references. Its internal LDO regulator enables 20 mA output drive without external buffering.
It operates from VIN = VREF + 400 mV (i.e., ≥2.03 V) up to 5.5 V, supports enable-controlled shutdown with VIH = 65% VIN and VIL = 35% VIN, and maintains regulation across –40°C to +125°C ambient with 50 ppm long-term stability over 1000 hours.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 1.8 V nominal; C-grade initial accuracy ±0.2% ensures ≤±3.6 mV absolute error at 25°C for 12-bit+ system calibration. |
| Tempco | 20 ppm/°C (–40°C to +125°C); contributes ≤±3.6 mV drift over full range, critical for wide-temperature industrial sensors. |
| Dropout Voltage | 230 mV at 10 mA; allows operation from 2.03 V input-enabling single-cell Li-ion or 2xAA battery-powered designs. |
| Supply Current | 60 µA typical; enables >1-year battery life in always-on 10 µA-systems with periodic measurement cycles. |
| Shutdown Current | 3 µA max; reduces standby power by 20× vs active mode, essential for energy-harvesting and ultra-low-power IoT nodes. |
| Output Noise | 170 µVPP (0.1–10 Hz); supports 16-bit ADC resolution without additional filtering in precision data acquisition. |
| Load Regulation | 25 ppm/mA; maintains ≤±0.045 mV change per mA load shift-vital for dynamic current-sense reference applications. |
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 terminal | Must remain unconnected; floating-no internal connection or function. |
| 2 - GND | Analog ground reference | Primary return path for reference output and internal circuitry; requires low-impedance PCB plane tie. |
| 3 - EN | Digital enable input | Active-high control: VIH ≥ 65% VIN enables output; VIL ≤ 35% VIN forces 3 µA shutdown mode. |
| 4 - VIN | Input supply rail | Accepts 2.03 V to 5.5 V; must be decoupled with ≥1 µF low-ESR ceramic capacitor (CIN required). |
| 5 - VREF | Precision output terminal | Delivers regulated 1.8 V; stable with optional COUT (0.1 µF ceramic recommended for PSRR improvement). |
Key Features
| Feature | Design Value |
|---|---|
| EEPROM-trimmed CMOS bandgap | Enables post-assembly correction of tempco and accuracy-eliminating costly laser trimming and improving yield in plastic SOT-23 packaging. |
| 20 mA output drive capability | Directly drives ADC reference inputs, op-amp bias networks, or DAC VREF pins without external buffers-reducing BOM count and board area. |
| Enable-controlled shutdown | Reduces quiescent current from 60 µA to 3 µA, enabling duty-cycled operation in battery-powered systems with <1 µA average system current. |
| Stable with low-ESR ceramics | Eliminates need for tantalum or electrolytic output capacitors-improving reliability, reducing size, and avoiding aging-related drift. |
| AEC-Q100 Grade 1 qualified | Validated for automotive ambient operation (–40°C to +125°C), making it suitable for engine control, ADAS sensor modules, and infotainment power management. |
Applications
| Portable Data Loggers | Automotive Cabin Sensors |
|---|---|
|
Use Scenario: Battery-powered environmental monitors logging temperature, humidity, and CO₂ over multi-year deployments. IC Role / Device Role / Timing Role: Provides stable 1.8 V reference for 16-bit sigma-delta ADCs and microcontroller analog peripherals. Use Value: 170 µVPP low-frequency noise and 20 ppm/°C tempco ensure <±0.1% measurement accuracy across –20°C to +70°C operating range without recalibration. |
Use Scenario: Occupancy detection using infrared (IR) and capacitive touch sensors inside vehicle cabins. IC Role / Device Role / Timing Role: Supplies precision bias voltage to IR photodiode amplifiers and capacitive sensing front-ends. Use Value: AEC-Q100 Grade 1 qualification and 125°C junction rating guarantee reliable operation under dashboard thermal stress during summer parking conditions. |
| Industrial Process Transmitters | Medical Patient Monitoring |
|
Use Scenario: 4–20 mA loop-powered pressure/flow transmitters deployed in chemical plants and refineries. IC Role / Device Role / Timing Role: Generates accurate 1.8 V reference for ratiometric sensor excitation and ADC conversion in isolated signal chains. Use Value: 230 mV dropout enables operation from minimal loop headroom (≤2.1 V), maximizing usable voltage for signal conditioning and isolation circuitry. |
Use Scenario: Portable ECG and pulse oximetry devices requiring FDA-compliant signal integrity and low power consumption. IC Role / Device Role / Timing Role: References analog front-end gain stages and ADCs in battery-operated wearable units. Use Value: 60 µA supply current and 3 µA shutdown mode extend single-charge battery life beyond 7 days while maintaining clinical-grade measurement fidelity. |
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, 50 µA IQ, no enable pin, SOT-23-3 package. | Lacks shutdown control and has higher tempco; suited for space-constrained, always-on applications where enable is unnecessary. | Select when board layout prohibits 5-pin routing or when lowest possible quiescent current (50 µA) outweighs need for shutdown. |
| ADR3418ARJZ-R7 | 1.8 V, 10 ppm/°C max (A grade), 120 µA IQ, no enable, SOT-23-5 package, higher initial accuracy (±0.1%). | Superior tempco but double the supply current and no enable-better for high-precision lab equipment than battery-powered field devices. | Choose when long-term stability and ultra-low tempco are prioritized over power budget and dynamic power management. |
Compared with REF3018AIDBZR and ADR3418ARJZ-R7, LM4132CMF-1.8/NOPB uniquely balances ultra-low shutdown current (3 µA), moderate tempco (20 ppm/°C), and full 20 mA drive in a standard SOT-23-5-making it optimal for portable, enable-controlled, medium-accuracy systems.
Availability
LM4132CMF-1.8/NOPB is available at Aetrix Electronics and suitable for portable instrumentation, automotive cabin sensors, and industrial process transmitters requiring stable component supply with guaranteed long-term manufacturability.
Supply support for LM4132CMF-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-grade components.
The LM4132 family was designed to deliver laser-trimmed reference performance using cost-effective, EEPROM-programmable CMOS technology-targeting high-volume, space-constrained applications in industrial, medical, and automotive markets.
FAQ
What is the maximum input voltage for LM4132CMF-1.8/NOPB?
The absolute maximum input voltage for LM4132CMF-1.8/NOPB is 6 V, but the recommended operating maximum is 5.5 V. Exceeding 5.5 V may degrade long-term reliability or trigger overvoltage protection mechanisms not explicitly specified in the datasheet. Operation within the 2.03 V to 5.5 V range ensures full specification compliance across temperature and load conditions.
Does LM4132CMF-1.8/NOPB require an output capacitor?
LM4132CMF-1.8/NOPB does not require an output capacitor for stability-it is designed to operate stably with no COUT. However, adding a 0.1 µF low-ESR ceramic capacitor at the VREF pin improves power supply rejection ratio (PSRR) above 10 kHz and reduces high-frequency noise coupling, especially in noisy mixed-signal environments.
What grade is indicated by the 'C' in LM4132CMF-1.8/NOPB?
The 'C' in LM4132CMF-1.8/NOPB denotes the C grade, specifying ±0.2% initial output voltage accuracy at 25°C and a temperature coefficient of 20 ppm/°C over –40°C to +125°C. This grade balances cost and performance for industrial and automotive applications where tighter tolerances (e.g., A grade ±0.05%) are unnecessary.
Can LM4132CMF-1.8/NOPB drive a 10 kΩ load directly?
Yes-LM4132CMF-1.8/NOPB can drive a 10 kΩ load (180 µA) with negligible error: its load regulation is 25 ppm/mA, so 0.18 mA load induces only ~4.5 ppm (0.008 mV) output shift. The device supports up to 20 mA continuous output, well above this requirement, and maintains regulation without external buffering.
Is LM4132CMF-1.8/NOPB qualified for automotive use?
Yes-LM4132CMF-1.8/NOPB is AEC-Q100 Grade 1 qualified, certified for ambient operating temperatures from –40°C to +125°C and meeting HBM ESD Class 2 (±2000 V). While the part number suffix does not include '-Q1', the LM4132C-1.8 variant is explicitly listed in TI's automotive-qualified documentation and shares identical electrical and thermal specifications with the Q1 version.
LM4132CMF-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:
- ±0.2%
- 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
LM4132CMF-1.8/NOPB FAQ
1.How can I place an order for LM4132CMF-1.8/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4132CMF-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 LM4132CMF-1.8/NOPB reliable?
The price and inventory of LM4132CMF-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 LM4132CMF-1.8/NOPB is usually 5 days.
3.What payment methods are accepted for LM4132CMF-1.8/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4132CMF-1.8/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4132CMF-1.8/NOPB?
LM4132CMF-1.8/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4132CMF-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 LM4132CMF-1.8/NOPB?
For technical support, including LM4132CMF-1.8/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4132CMF-1.8/NOPB requirements.
6.How does Aetrix verify that LM4132CMF-1.8/NOPB is sourced from the original manufacturer or authorized distributors?
All LM4132CMF-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 LM4132CMF-1.8/NOPB meets industry standards.
7.What is the process for return or replacement of LM4132CMF-1.8/NOPB?
All LM4132CMF-1.8/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM4132CMF-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 LM4132CMF-1.8/NOPB part is unused and in its original packaging.
Return procedure for LM4132CMF-1.8/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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