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Texas Instruments LM4132DQ1MFR2.5
- Part No.:
- LM4132DQ1MFR2.5
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LM4132DQ1MFR2.5.pdf
- Description:
- IC VREF SERIES 0.4% SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,307
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Product details
Overview
LM4132DQ1MFR2.5 from Texas Instruments is a precision low-dropout (LDO) voltage reference IC delivering a stable 2.5 V output with ±0.4% initial accuracy (D-grade), 20 ppm/°C temperature coefficient over –40°C to +125°C, 60 µA supply current, and 20 mA output drive capability. It operates from VIN = VREF + 400 mV to 5.5 V and features an enable pin for 3 µA shutdown mode-ideal for automotive sensor signal conditioning and high-accuracy ADC biasing in battery-powered systems.
For engineers reviewing the LM4132DQ1MFR2.5 datasheet, LM4132DQ1MFR2.5 pinout, LM4132DQ1MFR2.5 application, or LM4132DQ1MFR2.5 equivalent, key selection criteria include automotive-grade AEC-Q100 qualification (Grade 1), SOT-23-5 package compatibility, dropout voltage ≤400 mV at 10 mA, stability with low-ESR ceramic capacitors, and absence of required output capacitor-critical for space-constrained, safety-relevant designs.
Technical Context
The LM4132DQ1MFR2.5 implements a CMOS band-gap architecture with EEPROM-based curvature and tempco correction, enabling laser-trimmed-level precision without laser trimming. Its internal LDO regulator topology eliminates need for external buffer amplifiers or mandatory output capacitance-unlike shunt references or older series references.
It integrates an active enable circuit with VIH = 65% VIN and VIL = 35% VIN thresholds, supporting direct microcontroller GPIO control. The device maintains 0.5% output accuracy down to 400 mV input-to-output differential and delivers 20 mA load current while sustaining <25 ppm/mA load regulation across –40°C to +125°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.5 V ±0.4% (D-grade, 25°C); enables precise 12-bit+ ADC reference scaling without calibration. |
| Tempco | 20 ppm/°C (–40°C to +125°C); ensures ≤±0.5% total drift over full automotive temperature range. |
| Dropout Voltage | ≤400 mV at 10 mA load; allows operation from 2.9 V input-compatible with single-cell LiFePO₄ or dual-cell alkaline supplies. |
| Supply Current | 60 µA (active), 3 µA (shutdown); extends battery life in always-on monitoring nodes beyond 10 years at 10 µA avg. |
| Load Drive | 20 mA max; directly drives SAR ADC reference inputs, op-amp bias networks, or DAC VREF pins without buffering. |
| Line Regulation | 50 ppm/V (VREF + 400 mV ≤ VIN ≤ 5.5 V); rejects ripple from switching regulators feeding the reference. |
| Long-Term Stability | 50 ppm (1000 hrs); supports 15-year field reliability in industrial instrumentation without recalibration. |
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 finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - N/C | No-connect terminal | Must remain unconnected; floating-no PCB trace or pad required. |
| 2 - GND | Analog ground reference | Primary return path for reference output and internal band-gap core; requires low-impedance connection to system AGND plane. |
| 3 - EN | Active-high enable input | Drives internal LDO gate; logic high ≥65% VIN enables output; low ≤35% VIN forces 3 µA shutdown. |
| 4 - VIN | Input supply rail | Accepts 2.9 V to 5.5 V; must be bypassed with ≥1 µF ceramic capacitor near pin per layout guidelines. |
| 5 - VREF | Precision 2.5 V output | Low-noise (240 µVPP, 0.1–10 Hz), low-impedance source; connects directly to ADC REF+ or DAC VREF. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualified | Validated for automotive ambient operation from –40°C to +125°C-suitable for engine control, ADAS sensor modules, and infotainment power rails. |
| EEPROM-trimmed curvature compensation | Eliminates need for external trimming components and achieves 10 ppm/°C typ. tempco in 0°C–85°C range-reducing BOM count and calibration labor. |
| No mandatory output capacitor | Stable with only input capacitor (CIN); removes COUT placement constraints and avoids ESR-related instability in compact PCB layouts. |
| 20 mA output drive | Supports direct interface to multiple downstream analog blocks (e.g., 2× 10 kΩ ADC reference loads) without external buffers-reducing board area and thermal load. |
| Low 0.1–10 Hz noise | 240 µVPP output noise enables sub-16-bit effective resolution in precision data acquisition systems without additional filtering. |
Applications
| Automotive Engine Control Unit (ECU) | Portable Medical Glucometer |
|---|---|
Use Scenario: Provides stable 2.5 V reference for oxygen sensor signal conditioning and knock sensor ADC conversion under wide temperature and vibration conditions. IC Role / Device Role / Timing Role: Precision voltage reference for analog front-end (AFE) gain-setting and ADC reference voltage generation. Use Value: Maintains ≤±0.5% total error over –40°C to +125°C, ensuring consistent fuel-air ratio calculation accuracy across vehicle lifetime. |
Use Scenario: Supplies reference voltage to 16-bit sigma-delta ADC measuring electrochemical current from test strip biosensors. IC Role / Device Role / Timing Role: Low-noise, low-drift reference source for high-resolution analog measurement chain. Use Value: 240 µVPP 0.1–10 Hz noise and 50 ppm long-term stability enable repeatable blood glucose readings within ±5 mg/dL clinical tolerance. |
| Industrial PLC Analog Input Module | Battery-Powered IoT Environmental Sensor Node |
Use Scenario: References 24-bit delta-sigma ADC converting 4–20 mA loop signals from pressure and temperature transmitters. IC Role / Device Role / Timing Role: Primary system reference for multi-channel simultaneous sampling ADC subsystem. Use Value: 20 ppm/°C tempco and 20 mA drive support 0.005% FS accuracy across –25°C to +70°C operating range without per-channel calibration. |
Use Scenario: Powers reference rail for ultra-low-power ADC measuring humidity, CO₂, and VOC levels in wireless sensor tags. IC Role / Device Role / Timing Role: Enable-controlled precision reference enabling duty-cycled measurement to extend coin-cell battery life. Use Value: 3 µA shutdown current and fast wake-up (<10 µs) reduce average system current to <1 µA during sleep-enabling >5-year operation on CR2032. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6126AASA25+ | 2.5 V, ±0.06% initial accuracy (A-grade), 3 ppm/°C tempco, 0.9 µA quiescent current, SOT-23-6 package. | Higher precision and lower drift-but no enable pin; requires external shutdown control; not AEC-Q100 qualified. | Select for lab-grade instrumentation where ultra-low drift outweighs automotive compliance and enable functionality. |
| ADR3425ARJZ-R7 | 2.5 V, ±0.1% initial accuracy, 10 ppm/°C tempco, 3.5 µA IQ, no enable pin, SOT-23-5 package. | Lacks enable function and automotive qualification; lower supply current but no shutdown mode. | Choose when minimal quiescent current is critical and enable control is implemented externally via MOSFET switch on VIN. |
Compared with MAX6126AASA25+ and ADR3425ARJZ-R7, the LM4132DQ1MFR2.5 uniquely combines AEC-Q100 Grade 1 qualification, integrated enable pin, and 20 mA drive in SOT-23-5-making it the only drop-in solution for automotive and industrial systems requiring both functional safety readiness and direct microcontroller-controlled power gating.
Availability
LM4132DQ1MFR2.5 is available at Aetrix Electronics and suitable for automotive ECU design, portable medical diagnostics, industrial PLC analog input modules, and battery-powered IoT sensor nodes requiring stable component supply with guaranteed long-term availability and automotive-grade traceability.
Supply support for LM4132DQ1MFR2.5 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, power management, and automotive electronics.
The LM4132 family was designed specifically for high-accuracy, low-power, automotive-qualified voltage reference applications-targeting systems where laser-trimmed performance must be achieved in cost-effective CMOS processes with robust thermal and long-term stability.
FAQ
What is the maximum input voltage for LM4132DQ1MFR2.5?
The absolute maximum input voltage for LM4132DQ1MFR2.5 is 6 V, but the recommended operating maximum is 5.5 V. Operation above 5.5 V risks exceeding absolute maximum ratings and may degrade long-term reliability. For optimal performance and safety margin, keep VIN ≤5.5 V across all temperatures and load conditions.
Does LM4132DQ1MFR2.5 require an output capacitor?
No, LM4132DQ1MFR2.5 is stable without an output capacitor (COUT). The datasheet explicitly states COUT is optional and only recommended for specific noise-suppression scenarios. A minimum 1 µF ceramic input capacitor (CIN) is required between VIN and GND, placed as close as possible to the device pins.
What does the 'Q1' suffix indicate in LM4132DQ1MFR2.5?
The 'Q1' suffix denotes AEC-Q100 qualification for automotive applications, specifically Grade 1 (–40°C to +125°C ambient operating temperature). This includes stress testing for HBM ESD (±2000 V), thermal cycling, and long-term reliability-verified per TI's automotive qualification protocol, not just standard commercial screening.
Can LM4132DQ1MFR2.5 drive a 10 kΩ load continuously?
Yes, LM4132DQ1MFR2.5 can continuously drive a 10 kΩ load (250 µA at 2.5 V) with full specification compliance. Its 20 mA output capability far exceeds this requirement, and load regulation remains ≤25 ppm/mA up to 20 mA-ensuring <0.005% output deviation even under worst-case temperature and aging conditions.
What is the enable pin threshold voltage for LM4132DQ1MFR2.5?
The enable pin (EN) of LM4132DQ1MFR2.5 has a threshold defined relative to VIN: VIH (min) = 65% of VIN and VIL (max) = 35% of VIN, specified over –40°C to +125°C. This ratiometric behavior ensures reliable enable/disable operation across varying input voltages without level-shifting circuitry.
LM4132DQ1MFR2.5 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):
- 2.5V
- Voltage - Output (Max):
- -
- Current - Output:
- 20 mA
- Tolerance:
- ±0.4%
- Temperature Coefficient:
- 20ppm/°C
- Noise - 0.1Hz to 10Hz:
- 240µVp-p
- Noise - 10Hz to 10kHz:
- -
- Voltage - Input:
- 2.9V ~ 5.5V
- Current - Supply:
- 100µA
- Current - Cathode:
- -
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
LM4132DQ1MFR2.5 FAQ
1.How can I place an order for LM4132DQ1MFR2.5 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4132DQ1MFR2.5 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 LM4132DQ1MFR2.5 reliable?
The price and inventory of LM4132DQ1MFR2.5 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4132DQ1MFR2.5 is usually 5 days.
3.What payment methods are accepted for LM4132DQ1MFR2.5?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4132DQ1MFR2.5 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4132DQ1MFR2.5?
LM4132DQ1MFR2.5 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4132DQ1MFR2.5 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 LM4132DQ1MFR2.5?
For technical support, including LM4132DQ1MFR2.5 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4132DQ1MFR2.5 requirements.
6.How does Aetrix verify that LM4132DQ1MFR2.5 is sourced from the original manufacturer or authorized distributors?
All LM4132DQ1MFR2.5 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 LM4132DQ1MFR2.5 meets industry standards.
7.What is the process for return or replacement of LM4132DQ1MFR2.5?
All LM4132DQ1MFR2.5 units undergo pre-shipment inspection (PSI). If there is an issue with LM4132DQ1MFR2.5, 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 LM4132DQ1MFR2.5 part is unused and in its original packaging.
Return procedure for LM4132DQ1MFR2.5:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM4132DQ1MFR2.5 Tags
-
TL431AIDBZR
Texas Instruments
-
TL431BQDBZR
Texas Instruments
-
AN431AN-ATRG1
Diodes Incorporated
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LM4040CYM3-2.5-TR
Microchip Technology
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LM4040CYM3-4.1-TR
Microchip Technology
-
LM4040EIM3-2.5/NOPB
Texas Instruments
-
AZ431LBNTR-G1
Diodes Incorporated
-
LM4040D20IDBZR
Texas Instruments
-
LM4041DIM3-ADJ/NOPB
Texas Instruments
-
LM4040DIM3X-2.5/NOPB
Texas Instruments
-
LM4040DIM3-2.5/NOPB
Texas Instruments
-
AZ431LANTR-G1
Diodes Incorporated
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