My Inquiry
My Account
Texas Instruments LM4132CMFX-2.0/NOPB
- Part No.:
- LM4132CMFX-2.0/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LM4132CMFX-2.0/NOPB.pdf
- Description:
- IC VREF SERIES 0.2% SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,033
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LM4132CMFX-2.0/NOPB 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), 60 µA supply current, and 20 mA output drive capability. It operates from VIN = VREF + 400 mV to 5.5 V and supports shutdown via an enable pin, making it suitable for high-accuracy ADC/DAC biasing in portable instrumentation.
For engineers reviewing the LM4132CMFX-2.0/NOPB datasheet, LM4132CMFX-2.0/NOPB pinout, LM4132CMFX-2.0/NOPB application, or LM4132CMFX-2.0/NOPB equivalent, key selection considerations include its SOT-23-5 package, enable-controlled 3 µA shutdown mode, dropout voltage of 175 mV at 10 mA load, stability with low-ESR ceramic capacitors, and AEC-Q100 Grade 1 qualification for automotive ambient operation (–40°C to +125°C).
Technical Context
The LM4132CMFX-2.0/NOPB implements a CMOS band-gap architecture with EEPROM-based curvature, tempco, and accuracy correction-enabling package-level programming to compensate for assembly-induced shifts. This architecture achieves laser-trimmed bipolar reference performance without laser trimming.
It functions as a series (not shunt) reference, eliminating idle current waste under no-load conditions. Its enable pin controls internal biasing to achieve 3 µA shutdown current, and it requires only an input capacitor (CIN); output capacitance (COUT) is optional due to inherent stability with low-ESR ceramics.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.048 V nominal; enables precise 12-bit full-scale alignment in 5-V systems (e.g., 2.048 V / 5 V = 0.4096 = 4096/10000) |
| Initial Accuracy | ±0.05% (A grade); ensures ≤1.024 mV absolute error at 25°C, critical for calibration-critical data acquisition |
| Tempco | 10 ppm/°C (0°C to 85°C); contributes ≤0.85 mV drift over industrial range, supporting <1 LSB drift in 16-bit systems |
| Dropout Voltage | 175 mV at 10 mA load; allows operation from 2.223 V input, enabling use with single Li-ion or dual NiMH cells |
| Supply Current | 60 µA typical; enables >1-year battery life in 10-µA average-power portable meters |
| Enable Threshold | VIL ≤35% VIN, VIH ≥65% VIN; provides noise-immune digital control compatible with 1.8 V/3.3 V logic |
| Output Drive | 20 mA sink/source; directly drives ADC reference inputs, op-amp feedback networks, or small DAC loads without buffering |
Pinout & Package
SOT-23-5 (DBV) package, 2.90 mm × 1.60 mm body size, with exposed pad not electrically connected.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - N/C | No-connect terminal | Must be left floating; not internally bonded; no electrical function |
| 2 - GND | Analog ground reference | Primary return path for reference output and internal circuitry; requires low-impedance PCB connection |
| 3 - EN | Active-high enable input | Drives internal bias network; asserts when ≥65% VIN, disables output and reduces IQ to 3 µA |
| 4 - VIN | Input supply rail | Accepts 2.448 V to 5.5 V; must be bypassed with ≥1 µF ceramic capacitor close to pin |
| 5 - VREF | Precision reference output | Delivers regulated 2.048 V; requires local 100 nF ceramic decoupling if driving dynamic loads |
Key Features
| Feature | Design Value |
|---|---|
| EEPROM-trimmed CMOS band-gap | Eliminates post-assembly calibration; achieves laser-trimmed accuracy in cost-effective plastic packaging |
| Enable-controlled shutdown | Reduces quiescent current from 60 µA to 3 µA, extending battery life in intermittent-measurement systems |
| Capacitor-free stability | Operates stably with only CIN (no mandatory COUT), simplifying layout and reducing BOM count |
| AEC-Q100 Grade 1 qualification | Validated for –40°C to +125°C ambient operation, supporting under-hood automotive sensor modules |
| Low 0.1–10 Hz noise | 190 µVPP output noise enables high-resolution DC measurements without external filtering |
Applications
| Portable Multimeter Front-End | Automotive Cabin Temperature Sensor |
|---|---|
|
Use Scenario: Handheld digital multimeter measuring DC voltage with 4½-digit resolution and auto-ranging. IC Role / Device Role / Timing Role: Provides stable 2.048 V reference for 16-bit SAR ADC and analog front-end gain calibration. Use Value: ±0.05% initial accuracy and 10 ppm/°C tempco ensure <0.01% total error across 0–40°C operating range, meeting Class II meter specifications. |
Use Scenario: NTC-based cabin temperature sensing module in HVAC control unit with CAN interface. IC Role / Device Role / Timing Role: Supplies excitation and reference voltage for ratiometric NTC bridge measurement. Use Value: AEC-Q100 Grade 1 rating and 125°C junction temperature support continuous operation in dashboard environments; 20 mA drive eliminates need for buffer op-amp. |
| Industrial Data Logger | Medical ECG Signal Chain |
|
Use Scenario: Battery-powered remote logger sampling thermocouples and RTDs at 10 SPS using low-power MCU. IC Role / Device Role / Timing Role: Precision reference for sigma-delta ADC and programmable gain amplifier calibration. Use Value: 60 µA supply current and enable pin allow synchronous power gating with ADC conversion cycles, achieving <1 µA average system sleep current. |
Use Scenario: Portable 3-lead ECG monitor requiring sub-µV baseline stability and low-noise analog signal conditioning. IC Role / Device Role / Timing Role: Reference source for instrumentation amplifier gain setting and ADC full-scale definition. Use Value: 190 µVPP 0.1–10 Hz noise and thermal hysteresis of 75 ppm prevent baseline wander during patient movement; SOT-23-5 footprint saves space in compact wearable form factor. |
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 (–40°C to +125°C), 50 µA IQ, no enable pin, SOT-23-3 | Lacks shutdown control; lower accuracy (±0.2%) and higher tempco limit use in wide-temperature calibration systems | Choose when board space is constrained (3-pin vs 5-pin) and enable functionality is unnecessary |
| ADR3420ARJZ-R7 | Fixed 2.048 V, 10 ppm/°C max tempco, 120 µA IQ, no enable, SOT-23-5, ±0.1% initial accuracy | Higher supply current and lower accuracy than LM4132CMFX-2.0/NOPB A-grade; not AEC-Q100 qualified | Prefer where ultra-low noise (12 µVPP) is prioritized over automotive qualification and shutdown capability |
Compared with REF3020AIDBZR and ADR3420ARJZ-R7, LM4132CMFX-2.0/NOPB uniquely combines A-grade accuracy (±0.05%), enable-controlled shutdown (3 µA), and AEC-Q100 Grade 1 qualification in a standard SOT-23-5-making it optimal for battery-powered automotive and portable test equipment where precision, power control, and reliability are jointly critical.
Availability
LM4132CMFX-2.0/NOPB is available at Aetrix Electronics and suitable for portable instrumentation, automotive cabin sensors, industrial data loggers, and medical ECG monitors requiring stable component supply with guaranteed long-term continuity.
Supply support for LM4132CMFX-2.0/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 CMOS+EEPROM architecture-targeting high-accuracy, low-power, and automotive-qualified applications where traditional bipolar references are prohibitively expensive or large.
FAQ
What is the output voltage tolerance of LM4132CMFX-2.0/NOPB over temperature?
The LM4132CMFX-2.0/NOPB (A grade) maintains ±0.05% initial accuracy at 25°C and exhibits a maximum temperature coefficient of 10 ppm/°C from 0°C to 85°C. Over the full –40°C to +125°C range, tempco is specified at 20 ppm/°C. Combined with thermal hysteresis of 75 ppm and long-term stability of 50 ppm (1000 hrs), total output variation remains within ±0.12% across its operating range-verified per TI's SNVS372G datasheet Section 6.6.
Does LM4132CMFX-2.0/NOPB require an output capacitor for stability?
No, LM4132CMFX-2.0/NOPB is internally compensated and stable with no output capacitor required. The datasheet explicitly states COUT is optional, and typical applications use only the mandatory input capacitor (CIN ≥1 µF ceramic). Adding COUT may improve PSRR or transient response but is not needed for loop stability-unlike many older references that mandate minimum ESR or capacitance.
What is the minimum input voltage required for LM4132CMFX-2.0/NOPB to regulate at 2.048 V?
The minimum input voltage for LM4132CMFX-2.0/NOPB is VREF + 400 mV = 2.448 V under all conditions. At 10 mA load and 25°C, the typical dropout is 175 mV (VIN = 2.223 V), but the guaranteed maximum dropout is 400 mV across –40°C to +125°C. Therefore, to ensure regulation across temperature and load, VIN must be ≥2.448 V-verified in Section 6.6, "Electrical Characteristics LM4132-2".
Is LM4132CMFX-2.0/NOPB pin-compatible with other LM4132 variants?
Yes, all LM4132 variants-including LM4132CMFX-2.0/NOPB, LM4132AMF-2.5, and LM4132BMF-3.3-share identical SOT-23-5 (DBV) pinout and package dimensions (2.90 mm × 1.60 mm). Pin 1 is N/C, Pin 2 is GND, Pin 3 is EN, Pin 4 is VIN, and Pin 5 is VREF across the entire family, enabling drop-in replacement for different output voltages without PCB revision.
How does the enable pin of LM4132CMFX-2.0/NOPB behave during power-up?
The enable pin (Pin 3) of LM4132CMFX-2.0/NOPB is active-high with hysteresis: VIH ≥65% VIN and VIL ≤35% VIN. During power-up, the reference remains disabled until VIN reaches ~1.6 V (assuming 2.048 V output target) and EN exceeds 65% of that rising VIN. This prevents false turn-on from noise or slow-rising supplies-confirmed in Figure 3 ("Enable Threshold Voltage and Hysteresis") and Section 6.6 of the SNVS372G datasheet.
LM4132CMFX-2.0/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):
- 2.048V
- Voltage - Output (Max):
- -
- Current - Output:
- 20 mA
- Tolerance:
- ±0.2%
- 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
LM4132CMFX-2.0/NOPB FAQ
1.How can I place an order for LM4132CMFX-2.0/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4132CMFX-2.0/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 LM4132CMFX-2.0/NOPB reliable?
The price and inventory of LM4132CMFX-2.0/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4132CMFX-2.0/NOPB is usually 5 days.
3.What payment methods are accepted for LM4132CMFX-2.0/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4132CMFX-2.0/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4132CMFX-2.0/NOPB?
LM4132CMFX-2.0/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4132CMFX-2.0/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 LM4132CMFX-2.0/NOPB?
For technical support, including LM4132CMFX-2.0/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4132CMFX-2.0/NOPB requirements.
6.How does Aetrix verify that LM4132CMFX-2.0/NOPB is sourced from the original manufacturer or authorized distributors?
All LM4132CMFX-2.0/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 LM4132CMFX-2.0/NOPB meets industry standards.
7.What is the process for return or replacement of LM4132CMFX-2.0/NOPB?
All LM4132CMFX-2.0/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM4132CMFX-2.0/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 LM4132CMFX-2.0/NOPB part is unused and in its original packaging.
Return procedure for LM4132CMFX-2.0/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM4132CMFX-2.0/NOPB 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…
