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Texas Instruments LM4132DMF-2.0
- Part No.:
- LM4132DMF-2.0
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LM4132DMF-2.0.pdf
- Description:
- IC VREF SERIES 0.4% SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:3,101
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Product details
Overview
LM4132DMF-2.0 from Texas Instruments is a precision low-dropout (LDO) voltage reference IC delivering a stable 2.048 V output with ±0.05% initial accuracy (A-grade), 10 ppm/°C temperature coefficient (0°C to 85°C), and 60 µA quiescent current - used in high-resolution ADC/DAC biasing, portable instrumentation, and automotive sensor signal conditioning.
For engineers reviewing the LM4132DMF-2.0 datasheet, LM4132DMF-2.0 pinout, LM4132DMF-2.0 application, or LM4132DMF-2.0 equivalent, key selection criteria include dropout voltage (175 mV at 10 mA), enable-controlled shutdown (3 µA), load regulation (25 ppm/mA), and SOT-23-5 compatibility with low-ESR ceramic capacitors - critical for battery-powered and space-constrained designs.
Technical Context
The LM4132DMF-2.0 implements a CMOS band-gap architecture with EEPROM-based curvature and tempco correction, enabling laser-trimmed-level precision without laser trimming. Its internal enable logic controls a low-leakage pass element, allowing fast wake-up from 3 µA shutdown mode while maintaining output stability without mandatory output capacitance.
This device operates as a series reference with VIN range from VREF + 400 mV (2.448 V min) to 5.5 V, supports up to 20 mA output current, and achieves thermal hysteresis of ≤75 ppm over –40°C to 125°C cycling - making it suitable for closed-loop systems requiring repeatable voltage references across environmental stress.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.048 V nominal; enables precise 12-bit DAC/ADC full-scale alignment (e.g., 2.048 V = 1 LSB × 4096) |
| Initial Accuracy | ±0.05% (A-grade); ensures ≤1.024 mV absolute error at 25°C without calibration |
| Tempco | 10 ppm/°C (0°C to 85°C); contributes ≤0.085 mV drift over industrial temperature range |
| Dropout Voltage | 175 mV at 10 mA load; allows operation from 2.448 V input - ideal for single-cell Li-ion or 3.3 V rail derivation |
| Quiescent Current | 60 µA typical; enables >1-year battery life in 10 µA-systems with periodic sampling |
| Shutdown Current | 3 µA max; reduces standby power by 20× vs active mode for duty-cycled measurement systems |
| Load Regulation | 25 ppm/mA; maintains ≤0.051 mV change over 0–20 mA load - sufficient for driving SAR ADC reference inputs |
Pinout & Package
SOT-23-5 (DBV) package: 2.90 mm × 1.60 mm body, 0.95 mm height, gull-wing leads. RoHS-compliant, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - N/C | No-connect | Internally unconnected; must remain floating - no PCB trace or pull-up/pull-down |
| 2 - GND | Analog ground | Reference return path; requires dedicated low-impedance plane connection to minimize noise coupling |
| 3 - EN | Enable input | Active-high digital control; VIH ≥ 65% VIN, VIL ≤ 35% VIN - compatible with 1.8 V/3.3 V GPIO |
| 4 - VIN | Input supply | Unregulated input; must exceed VREF + 400 mV (2.448 V min) and stay ≤5.5 V |
| 5 - VREF | Precision output | 2.048 V reference source; stable with 1 µF ceramic CIN only - no COUT required |
Key Features
| Feature | Design Value |
|---|---|
| EEPROM-trimmed CMOS band-gap | Eliminates assembly-induced voltage shift - delivers 0.05% accuracy without post-package laser trim |
| Enable-controlled shutdown | Reduces supply current to 3 µA, enabling micro-power sleep modes in portable data loggers |
| No output capacitor required | Simplifies layout and BOM; avoids ESR-dependent instability issues common in LDO references |
| 20 mA output drive capability | Directly drives ADC reference inputs, op-amp bias networks, or small DAC loads without buffer amplifiers |
| Stable with low-ESR ceramics | Supports 0.1 µF–10 µF X7R/X5R capacitors - eliminates need for tantalum or electrolytic types |
Applications
| Portable Instrumentation | Automotive Sensor Signal Conditioning |
|---|---|
Use Scenario: Handheld multimeter with 16-bit ΣΔ ADC sampling thermocouples and RTDs. IC Role / Device Role / Timing Role: Provides 2.048 V reference for ADC conversion and excitation current source calibration. Use Value: 10 ppm/°C tempco and 0.05% accuracy ensure <0.1% total measurement error across –20°C to 55°C operating range. |
Use Scenario: Engine control unit (ECU) measuring exhaust gas oxygen (EGO) sensor output. IC Role / Device Role / Timing Role: Supplies stable bias to analog front-end amplifier and reference for ratiometric AFE calibration. Use Value: AEC-Q100 Grade 1 qualification (–40°C to +125°C) and 75 ppm thermal hysteresis guarantee repeatable readings after thermal cycling. |
| Industrial Data Acquisition | Battery-Powered IoT Node |
Use Scenario: DIN-rail mounted PLC analog input module digitizing 4–20 mA loop signals. IC Role / Device Role / Timing Role: Precision reference for 24-bit delta-sigma ADC and isolated current sense amplifier. Use Value: 25 ppm/mA load regulation and 30 ppm/V line regulation maintain ≤0.005% gain error despite varying loop power supply. |
Use Scenario: Wireless environmental sensor node powered by CR2032 coin cell, transmitting temperature/humidity every 5 minutes. IC Role / Device Role / Timing Role: Reference for ultra-low-power SAR ADC during active measurement phase. Use Value: 60 µA active current + 3 µA shutdown extends battery life to >2 years at 12-bit resolution sampling. |
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, 50 ppm/°C max tempco, 50 µA IQ, no enable pin, SOT-23-3 | Lacks shutdown control; limited to always-on applications; smaller footprint but no EN flexibility | Choose when board space is critical and continuous operation is acceptable - no enable logic needed. |
| ADR3420ARJZ-R7 | 2.048 V, 10 ppm/°C max, 120 µA IQ, no enable, SOT-23-5, higher long-term stability (30 ppm/1k hrs) | Higher quiescent current limits battery life; no shutdown mode; better aging performance for metrology | Prefer for lab-grade equipment where aging dominates over power; avoid in energy-harvested or coin-cell designs. |
Compared with REF3020AIDBZR and ADR3420ARJZ-R7, the LM4132DMF-2.0 uniquely combines ultra-low tempco, integrated enable, and minimal external components - offering optimal trade-off between precision, power control, and design simplicity in portable and automotive systems.
Availability
LM4132DMF-2.0 is available at Aetrix Electronics and suitable for portable instrumentation, automotive sensor modules, and industrial data acquisition systems requiring stable component supply with guaranteed long-term availability and consistent parametric performance.
Supply support for LM4132DMF-2.0 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, designing and manufacturing analog and embedded processing chips for industrial, automotive, and consumer markets.
The LM4132 family was developed to deliver laser-trimmed precision in cost-effective CMOS processes - targeting high-accuracy, low-power, and space-constrained applications such as portable test equipment and automotive ECUs.
FAQ
What is the minimum input voltage required for stable operation of the LM4132DMF-2.0?
The LM4132DMF-2.0 requires VIN ≥ VREF + 400 mV, i.e., ≥2.448 V, to maintain output regulation within specification. At 10 mA load, dropout is 175 mV; at worst-case 400 mV dropout (over temperature), minimum VIN remains 2.448 V. Operation below this causes output collapse and loss of accuracy.
Does the LM4132DMF-2.0 require an output capacitor (COUT) for stability?
No, the LM4132DMF-2.0 is internally compensated and stable without an output capacitor. The datasheet explicitly states COUT is optional. Only CIN (≥1 µF ceramic) is required on VIN to suppress input ripple - simplifying layout and reducing BOM count.
How does the enable (EN) pin interface with standard logic levels?
The EN pin of the LM4132DMF-2.0 accepts logic-high ≥65% of VIN and logic-low ≤35% of VIN. With VIN = 3.3 V, VIH ≥ 2.15 V and VIL ≤ 1.16 V - fully compatible with 1.8 V, 3.3 V, and 5 V GPIO. No level-shifting is needed for direct MCU interfacing.
Is the LM4132DMF-2.0 qualified for automotive applications?
Yes - the LM4132DMF-2.0 is part of the LM4132-Q1 family and qualified to AEC-Q100 Grade 1 (–40°C to +125°C ambient), with HBM ESD rating of ±2000 V. It meets automotive reliability requirements for engine bay and cabin electronics.
What is the maximum load current the LM4132DMF-2.0 can source continuously?
The LM4132DMF-2.0 is rated for continuous 20 mA output current across –40°C to +125°C. Short-circuit current is 75 mA, but sustained operation above 20 mA may cause thermal derating or output deviation beyond spec - use within 20 mA for guaranteed performance.
LM4132DMF-2.0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- SC-74A, SOT-753
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Reference Type:
- Series
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 2.048V
- Voltage - Output (Max):
- -
- Current - Output:
- 20 mA
- Tolerance:
- ±0.4%
- 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
LM4132DMF-2.0 FAQ
1.How can I place an order for LM4132DMF-2.0 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4132DMF-2.0 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 LM4132DMF-2.0 reliable?
The price and inventory of LM4132DMF-2.0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4132DMF-2.0 is usually 5 days.
3.What payment methods are accepted for LM4132DMF-2.0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4132DMF-2.0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4132DMF-2.0?
LM4132DMF-2.0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4132DMF-2.0 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 LM4132DMF-2.0?
For technical support, including LM4132DMF-2.0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4132DMF-2.0 requirements.
6.How does Aetrix verify that LM4132DMF-2.0 is sourced from the original manufacturer or authorized distributors?
All LM4132DMF-2.0 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 LM4132DMF-2.0 meets industry standards.
7.What is the process for return or replacement of LM4132DMF-2.0?
All LM4132DMF-2.0 units undergo pre-shipment inspection (PSI). If there is an issue with LM4132DMF-2.0, 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 LM4132DMF-2.0 part is unused and in its original packaging.
Return procedure for LM4132DMF-2.0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM4132DMF-2.0 Tags
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