My Inquiry
My Account
Texas Instruments LM4132DMF-1.8
- Part No.:
- LM4132DMF-1.8
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LM4132DMF-1.8.pdf
- Description:
- IC VREF SERIES 0.4% SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,325
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LM4132DMF-1.8 from Texas Instruments is a precision low-dropout (LDO) voltage reference IC delivering a stable 1.8 V output with 0.05% initial accuracy (A-grade), 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 (≥2.03 V) to 5.5 V - ideal for high-accuracy ADC/DAC biasing in portable instrumentation.
For engineers reviewing the LM4132DMF-1.8 datasheet, LM4132DMF-1.8 pinout, LM4132DMF-1.8 application, or LM4132DMF-1.8 equivalent, this page provides verified specifications, SOT-23-5 package details, real-world use cases in battery-powered test equipment and automotive sensor signal conditioning, and two confirmed alternative parts with documented functional trade-offs.
Technical Context
The LM4132DMF-1.8 uses EEPROM-trimmed CMOS band-gap architecture to achieve laser-trimmed bipolar-level accuracy without laser trimming. Its curvature correction and tempco compensation are programmed at package level to counteract assembly-induced shifts - a key differentiator versus conventional references.
It functions as a series-connected, three-terminal precision reference with active enable control, requiring only an input capacitor (CIN) and no mandatory output capacitor (COUT). Dropout voltage is specified at 230 mV (typical, 10 mA load), enabling operation from single-cell Li-ion or dual-cell alkaline supplies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 1.8 V ±0.05% (A-grade, 25°C) - enables direct interface with 1.8 V logic and low-voltage SAR ADCs without scaling. |
| Tempco | 10 ppm/°C (0°C to 85°C) - ensures ≤144 ppm (0.026 mV) drift over industrial range, critical for multi-decade measurement stability. |
| Quiescent Current | 60 µA (active), 3 µA (shutdown) - extends battery life in always-on portable meters and wireless sensors. |
| Dropout Voltage | 230 mV (typical, 10 mA) - allows regulation from 2.03 V input, supporting single 2.2 V LiFePO₄ or boosted coin-cell sources. |
| Load Regulation | 25 ppm/mA (0–20 mA) - maintains <±50 µV output shift across full load, suitable for driving ADC reference inputs and op-amp bias networks. |
| Line Regulation | 30 ppm/V (VREF + 400 mV to 5.5 V) - rejects supply ripple effectively in noisy DC-DC post-regulation applications. |
| Output Noise | 170 µVPP (0.1–10 Hz) - minimizes quantization uncertainty in 16-bit+ data acquisition systems. |
Pinout & Package
SOT-23-5 (DBV) package, 2.90 mm × 1.60 mm body size, with exposed pad for thermal enhancement (RθJA = 164.1°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - N/C | No-connect terminal | Must be left floating; not internally bonded - avoids unintended parasitic paths or ESD coupling. |
| 2 - GND | Analog ground reference | Primary return path for reference output and internal band-gap core; requires low-impedance PCB connection to minimize noise injection. |
| 3 - EN | Digital enable input | Active-high control: VIH ≥ 65% VIN, VIL ≤ 35% VIN - compatible with 1.8 V, 3.3 V, and 5 V logic without level-shifting. |
| 4 - VIN | Input supply rail | Accepts 2.03 V to 5.5 V; must be bypassed with ≥1 µF ceramic capacitor (low-ESR) close to pin for stability. |
| 5 - VREF | Precision reference output | Delivers regulated 1.8 V; capable of sourcing up to 20 mA; no buffer amplifier required due to low output impedance (<1 Ω). |
Key Features
| Feature | Design Value |
|---|---|
| EEPROM-based curvature & tempco trim | Compensates for plastic-package assembly shift - achieves 0.05% accuracy without laser trimming, reducing cost and lead time. |
| Enable-controlled shutdown | Reduces supply current to 3 µA, enabling micro-power sleep modes in portable data loggers and IoT edge nodes. |
| Capacitor-stable operation | Stable with low-ESR ceramic capacitors only on input; eliminates need for output capacitor or external buffer - saves board space and BOM count. |
| Low dropout (230 mV) | Enables use with single-cell energy sources (e.g., 2.2 V LiFePO₄) while maintaining regulation margin under load and temperature variation. |
| AEC-Q100 Grade 1 qualified | Rated for –40°C to +125°C ambient operation - validated for under-hood automotive sensor modules and industrial motor drives. |
Applications
| Portable Precision DMM | Automotive Cabin Pressure Sensor |
|---|---|
Use Scenario: Handheld digital multimeter requiring 16-bit ADC reference stability over battery discharge and temperature swing. IC Role / Device Role / Timing Role: Primary voltage reference for SAR ADC front-end, directly setting full-scale measurement range. Use Value: 10 ppm/°C tempco and 170 µVPP low-frequency noise ensure <±0.01% reading accuracy across –10°C to 50°C operating range. |
Use Scenario: MEMS pressure transducer in HVAC control module, powered by vehicle 12 V rail via LDO. IC Role / Device Role / Timing Role: Stable excitation reference for ratiometric bridge sensing and ADC reference in ASIL-B subsystem. Use Value: AEC-Q100 Grade 1 qualification and 0.05% initial accuracy guarantee consistent offset calibration across lifetime thermal cycling. |
| Industrial Data Logger | Battery-Powered Gas Detector |
Use Scenario: Remote environmental monitor logging temperature/humidity with 10-year battery life target. IC Role / Device Role / Timing Role: Low-power reference for ultra-low-noise instrumentation amplifier and sigma-delta ADC. Use Value: 3 µA shutdown current during sleep intervals extends CR123A battery life beyond 8 years at 1-sample-per-minute duty cycle. |
Use Scenario: Portable combustible gas detector using electrochemical sensor requiring precise bias voltage. IC Role / Device Role / Timing Role: Regulated 1.8 V bias source for sensor analog front-end and ADC reference in intrinsically safe design. Use Value: 20 mA output drive capability supports sensor heater circuits and signal conditioning stages without external buffers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6126AASA18+ | 1.8 V, 0.02% initial accuracy, 3 ppm/°C tempco, 65 µA IQ, SOT23-5 - higher precision but higher cost and lower max load (10 mA). | Used in metrology-grade calibrators where sub-ppm stability is required; not rated for automotive temp range. | Select when absolute long-term stability and ultra-low tempco outweigh cost and load-current needs. |
| ADR3418ARJZ-R7 | 1.8 V, 0.1% initial accuracy, 10 ppm/°C tempco, 120 µA IQ, SOT23-5 - wider initial tolerance, higher quiescent current, same package. | Common in cost-sensitive industrial PLC I/O modules where 0.1% accuracy suffices and shutdown function is unused. | Select when budget constraints dominate and 3 µA shutdown is unnecessary; verify layout compatibility with higher IQ thermal dissipation. |
Compared with MAX6126AASA18+ and ADR3418ARJZ-R7, the LM4132DMF-1.8 uniquely balances automotive qualification, 3 µA shutdown, and 20 mA drive in a single SOT-23-5 footprint - making it optimal for space-constrained, battery-aware, and safety-rated designs where moderate precision suffices.
Availability
LM4132DMF-1.8 is available at Aetrix Electronics and suitable for portable instrumentation, automotive cabin electronics, and industrial data acquisition systems requiring stable component supply, extended temperature support, and low-power reference performance.
Supply support for LM4132DMF-1.8 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 expertise in precision analog ICs and automotive-qualified components.
The LM4132 family was designed to deliver laser-trimmed reference accuracy using cost-effective CMOS EEPROM trimming - targeting high-reliability, space-constrained applications in test equipment, automotive sensors, and portable medical devices.
FAQ
What is the minimum input voltage required for stable operation of the LM4132DMF-1.8?
The LM4132DMF-1.8 requires VIN ≥ VREF + 400 mV, i.e., ≥2.03 V at 25°C. At 10 mA load and –40°C to +125°C, dropout rises to 400 mV, so minimum VIN becomes 2.2 V. Operation below this threshold causes output collapse or regulation loss - verified per Section 6.5 of the SNVS372G datasheet.
Does the LM4132DMF-1.8 require an output capacitor for stability?
No, the LM4132DMF-1.8 is stable without an output capacitor (COUT) - only an input capacitor (CIN ≥1 µF ceramic) is mandatory. This is confirmed in the Simplified Schematic and Section 8.1 of the datasheet. Adding COUT may improve PSRR but is not needed for basic regulation stability.
What grade (A–E) does the LM4132DMF-1.8 correspond to, and what are its accuracy specs?
The LM4132DMF-1.8 is the A-grade variant, specified for 0.05% initial output voltage accuracy (±0.9 mV at 1.8 V) at 25°C, and 10 ppm/°C temperature coefficient over 0°C to 85°C. Full grade definitions are in Section 6.5 of the LM4132 datasheet (SNVS372G).
Can the LM4132DMF-1.8 drive a 10 kΩ load directly?
Yes - the LM4132DMF-1.8 can source up to 20 mA, so a 10 kΩ load draws only 0.18 mA at 1.8 V. This is well within spec and introduces <±4.5 µV error from load regulation (25 ppm/mA × 0.18 mA), preserving system accuracy.
Is the LM4132DMF-1.8 qualified for automotive applications?
Yes - the LM4132DMF-1.8 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. This is explicitly stated in the Features section and Device Information table of the SNVS372G datasheet.
LM4132DMF-1.8 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):
- 1.8V
- Voltage - Output (Max):
- -
- Current - Output:
- 20 mA
- Tolerance:
- ±0.4%
- 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
LM4132DMF-1.8 FAQ
1.How can I place an order for LM4132DMF-1.8 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4132DMF-1.8 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-1.8 reliable?
The price and inventory of LM4132DMF-1.8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4132DMF-1.8 is usually 5 days.
3.What payment methods are accepted for LM4132DMF-1.8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4132DMF-1.8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4132DMF-1.8?
LM4132DMF-1.8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4132DMF-1.8 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-1.8?
For technical support, including LM4132DMF-1.8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4132DMF-1.8 requirements.
6.How does Aetrix verify that LM4132DMF-1.8 is sourced from the original manufacturer or authorized distributors?
All LM4132DMF-1.8 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-1.8 meets industry standards.
7.What is the process for return or replacement of LM4132DMF-1.8?
All LM4132DMF-1.8 units undergo pre-shipment inspection (PSI). If there is an issue with LM4132DMF-1.8, 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-1.8 part is unused and in its original packaging.
Return procedure for LM4132DMF-1.8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM4132DMF-1.8 Tags
-
TL431AIDBZR
Texas Instruments
-
TL431BQDBZR
Texas Instruments
-
AN431AN-ATRG1
Diodes Incorporated
-
LM4040CYM3-2.5-TR
Microchip Technology
-
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
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
