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Texas Instruments LM4132AMF-4.1
- Part No.:
- LM4132AMF-4.1
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LM4132AMF-4.1.pdf
- Description:
- IC VREF SERIES 0.05% SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:4,516
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Product details
Overview
LM4132AMF-4.1 from Texas Instruments is a precision low-dropout (LDO) series voltage reference IC delivering a stable 4.096 V output with ±0.05% initial accuracy, 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, and features an enable pin for 3 µA shutdown mode - ideal for high-resolution ADC biasing in portable instrumentation.
For engineers reviewing the LM4132AMF-4.1 datasheet, LM4132AMF-4.1 pinout, LM4132AMF-4.1 application, or LM4132AMF-4.1 equivalent, key selection considerations include its SOT-23-5 package, dropout voltage of 175 mV at 10 mA, 350 µVPP (0.1–10 Hz) output noise, and AEC-Q100 Grade 1 qualification for automotive ambient operation from –40°C to +125°C.
Technical Context
The LM4132AMF-4.1 uses EEPROM-trimmed CMOS bandgap architecture to achieve laser-trimmed bipolar-level precision without laser trimming - correcting curvature, tempco, and initial accuracy at package level to overcome plastic-package assembly shifts. Its internal LDO regulator eliminates need for external output capacitor or buffer amplifier.
It implements a rail-to-rail enable input (VIH = 65% VIN, VIL = 35% VIN) with hysteresis, supports stable operation with low-ESR ceramic capacitors on input only (CIN required, COUT optional), and maintains 0.5% output accuracy down to 175 mV dropout at 10 mA load across full temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 4.096 V ±0.05% (A-grade initial accuracy at 25°C) |
| Tempco | 10 ppm/°C (0°C to 85°C); enables ≤±0.2% drift over industrial range |
| Dropout Voltage | 175 mV at 10 mA load; allows operation from 4.271 V input minimum |
| Quiescent Current | 60 µA typical; enables >1-year battery life in 10 µA-systems |
| Shutdown Current | 3 µA at EN = 0 V; reduces standby power by 20× vs active mode |
| Output Noise | 350 µVPP (0.1–10 Hz); supports 16-bit+ SAR ADC reference stability |
| Load Capability | 20 mA sink/source; drives ADC reference inputs and op-amp bias networks directly |
Pinout & Package
SOT-23-5 (DBV) package: 2.90 mm × 1.60 mm body, 1.0 mm max height, gull-wing leads. RoHS-compliant, Pb-free, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - N/C | No-connect | Internally unconnected; must be left floating - no PCB trace or pull-up/down |
| 2 - GND | Analog ground | Primary return path for reference core; requires dedicated low-impedance plane connection |
| 3 - EN | Enable control input | Active-high logic; VIH ≥ 65% VIN enables output; VIL ≤ 35% VIN enters 3 µA shutdown |
| 4 - VIN | Input supply | Accepts 4.271 V to 5.5 V; bypassed externally with ≥1 µF ceramic capacitor |
| 5 - VREF | Precision output | 4.096 V reference source; capable of sourcing/sinking 20 mA with <0.5% regulation error |
Key Features
| Feature | Design Value |
|---|---|
| EEPROM-based curvature correction | Eliminates need for external trimming components and improves long-term stability to 50 ppm over 1000 hrs |
| Enable-controlled shutdown | Reduces system idle power by >95% - critical for duty-cycled sensor nodes and portable DMMs |
| LDO architecture with no COUT requirement | Saves board space and BOM cost; avoids stability risks from ESR-sensitive output caps |
| AEC-Q100 Grade 1 qualification | Validated for automotive under-hood use: –40°C to +125°C ambient, HBM ±2 kV ESD robustness |
| Stable with low-ESR ceramics | Supports 0402/0603 X7R/X5R input caps; removes need for tantalum or electrolytic alternatives |
Applications
| Portable Precision DMM | Automotive Battery Monitor |
|---|---|
Use Scenario: Handheld digital multimeter requiring 16-bit effective resolution and 1-year calibration stability. IC Role / Device Role / Timing Role: Primary reference for SAR ADC and internal DAC calibration. Use Value: 10 ppm/°C tempco and 50 ppm long-term drift ensure measurement accuracy remains within ±0.01% over field lifetime without recalibration. |
Use Scenario: In-vehicle 12 V battery voltage monitoring with cold-crank tolerance down to 6 V. IC Role / Device Role / Timing Role: Stable 4.096 V reference for microcontroller ADC measuring battery and alternator outputs. Use Value: 175 mV dropout enables valid readings even during engine cranking when supply dips to 6.2 V (6.2 V − 4.096 V = 2.104 V > 175 mV). |
| Industrial Data Logger | Medical Patient Monitor |
Use Scenario: Remote environmental sensor node logging temperature, pressure, and humidity with 10-year deployment goal. IC Role / Device Role / Timing Role: Reference for low-power sigma-delta ADC sampling at 10 SPS. Use Value: 60 µA supply current and 3 µA shutdown extend coin-cell life beyond 5 years in sleep-wake cycles. |
Use Scenario: Portable ECG device requiring FDA-grade signal integrity and low-noise analog front-end. IC Role / Device Role / Timing Role: Bias reference for instrumentation amplifiers and ADC driver stages. Use Value: 350 µVPP (0.1–10 Hz) noise ensures baseline wander remains <1 µV RMS - below clinical diagnostic threshold. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REF3340AIDBVR | 4.096 V, 30 ppm/°C max tempco, 6 µA IQ, SOT-23-5, no enable pin | Lacks shutdown control; lower power but no dynamic power gating | Preferred where ultra-low IQ dominates over enable flexibility and tempco |
| ADR3440ARJZ-R7 | 4.096 V, 10 ppm/°C max tempco, 120 µA IQ, SOT-23-5, no enable | Same tempco grade, but higher supply current and no shutdown capability | Chosen when TI supply chain constraints exist and enable function is not required |
Compared with LM4132AMF-4.1, REF3340AIDBVR trades enable functionality and tighter tempco for 10× lower quiescent current, while ADR3440ARJZ-R7 matches tempco but doubles IQ and omits shutdown - making LM4132AMF-4.1 optimal for systems needing both precision and dynamic power control.
Availability
LM4132AMF-4.1 is available at Aetrix Electronics and suitable for portable instrumentation, automotive battery monitoring, and industrial data acquisition requiring stable component supply with guaranteed long-term availability and automotive-grade reliability.
Supply support for LM4132AMF-4.1 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 and embedded processing technologies, with decades of leadership in precision analog ICs and automotive-qualified components.
The LM4132 family was designed specifically for high-accuracy, low-power, space-constrained applications - bridging the performance gap between expensive laser-trimmed references and cost-effective CMOS solutions using EEPROM-based post-assembly calibration.
FAQ
What is the maximum input voltage for LM4132AMF-4.1?
The absolute maximum input voltage for LM4132AMF-4.1 is 6 V, but the recommended operating maximum is 5.5 V per the datasheet. Exceeding 5.5 V may degrade long-term reliability or trigger overvoltage protection in adjacent circuitry. The device functions correctly from VIN = VREF + 400 mV (≥4.271 V) up to 5.5 V, with optimal PSRR above 4.5 V.
Does LM4132AMF-4.1 require an output capacitor?
No, LM4132AMF-4.1 does not require an output capacitor (COUT) due to its internal LDO architecture and inherent stability with capacitive loads. The datasheet explicitly states COUT is optional, and the device remains stable with zero output capacitance - unlike shunt references or older LDO references that mandate COUT for phase margin.
Is LM4132AMF-4.1 qualified for automotive applications?
Yes, LM4132AMF-4.1 is AEC-Q100 qualified (Grade 1) for automotive applications, with validated operation from –40°C to +125°C ambient temperature, HBM ESD rating of ±2 kV, and thermal hysteresis ≤75 ppm - meeting requirements for under-hood and infotainment subsystems per ISO/TS 16949 design controls.
What is the output noise specification for LM4132AMF-4.1?
LM4132AMF-4.1 delivers 350 µVPP (peak-to-peak) output noise over the 0.1 Hz to 10 Hz bandwidth, as specified in Section 6.11 of the SNVS372G datasheet. This low noise floor supports high-resolution data converters (≥16-bit) without additional filtering, and is measured with CIN = 1 µF ceramic and no COUT.
Can LM4132AMF-4.1 drive a 20 mA load continuously?
Yes, LM4132AMF-4.1 is rated for continuous 20 mA output current across the full temperature range (–40°C to +125°C), with load regulation of ≤25 ppm/mA. At 20 mA and 25°C, output voltage deviation remains within ±0.05% of 4.096 V, and dropout stays ≤400 mV - enabling direct driving of ADC reference buffers and op-amp bias networks.
LM4132AMF-4.1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- SC-74A, SOT-753
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Not For New Designs
- Reference Type:
- Series
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 4.096V
- Voltage - Output (Max):
- -
- Current - Output:
- 20 mA
- Tolerance:
- ±0.05%
- Temperature Coefficient:
- 20ppm/°C
- Noise - 0.1Hz to 10Hz:
- 350µVp-p
- Noise - 10Hz to 10kHz:
- -
- Voltage - Input:
- 4.496V ~ 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-4.1 FAQ
1.How can I place an order for LM4132AMF-4.1 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4132AMF-4.1 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-4.1 reliable?
The price and inventory of LM4132AMF-4.1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4132AMF-4.1 is usually 5 days.
3.What payment methods are accepted for LM4132AMF-4.1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4132AMF-4.1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4132AMF-4.1?
LM4132AMF-4.1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4132AMF-4.1 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-4.1?
For technical support, including LM4132AMF-4.1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4132AMF-4.1 requirements.
6.How does Aetrix verify that LM4132AMF-4.1 is sourced from the original manufacturer or authorized distributors?
All LM4132AMF-4.1 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-4.1 meets industry standards.
7.What is the process for return or replacement of LM4132AMF-4.1?
All LM4132AMF-4.1 units undergo pre-shipment inspection (PSI). If there is an issue with LM4132AMF-4.1, 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-4.1 part is unused and in its original packaging.
Return procedure for LM4132AMF-4.1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM4132AMF-4.1 Tags
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TL431AIDBZR
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