My Inquiry
My Account
Analog Devices Inc./Maxim Integrated LM4050AEM3-2.1/V+T
- Part No.:
- LM4050AEM3-2.1/V+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
LM4050AEM3-2.1/V+T.pdf
- Description:
- IC VREF SHUNT 0.1% SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:4,271
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LM4050AEM3-2.1/V+T from Analog Devices is a precision 2.048V, 0.1% initial accuracy, 50ppm/°C temperature coefficient shunt voltage reference in a 3-pin SOT23 package. It operates over -40°C to +125°C with 60µA–15mA shunt current capability and 28µVRMS wideband noise (10Hz–10kHz), enabling stable reference generation in automotive-grade power management circuits.
For engineers reviewing the LM4050AEM3-2.1/V+T datasheet, LM4050AEM3-2.1/V+T pinout, LM4050AEM3-2.1/V+T application, or LM4050AEM3-2.1/V+T equivalent, key selection criteria include AEC-Q100 qualification, guaranteed 0.1% initial tolerance across full temperature range, ultra-low micropower operation down to 60µA, and stability without output capacitors under capacitive loads.
Technical Context
The LM4050AEM3-2.1/V+T implements a laser-trimmed bandgap shunt architecture that maintains a precise 2.048V reverse breakdown voltage across its terminals when biased with 60µA–15mA of cathode-to-anode current. Its internal pass transistor sinks variable current to regulate voltage against supply and load variations.
It guarantees ±50ppm/°C tempco over –40°C to +125°C and exhibits low dynamic impedance (≤0.8Ω at 1mA), ensuring minimal voltage shift (<1.0mV) across 60µA–1mA operating current changes. The device tolerates any output capacitance and requires no external stabilization capacitor.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.048V nominal; ±2.0mV (±0.1%) initial tolerance at +25°C ensures high-accuracy ADC/DAC biasing. |
| Temperature Coefficient | ≤50ppm/°C over –40°C to +125°C; limits worst-case drift to ±0.5% across full range for robust automotive operation. |
| Operating Current Range | 60µA to 15mA; supports micropower sensor nodes and higher-current analog front-ends without external buffering. |
| Dynamic Impedance | ≤0.8Ω at 1mA; minimizes load-induced voltage error in precision feedback loops. |
| Wideband Noise | 28µVRMS (10Hz–10kHz); enables low-noise performance in high-resolution data acquisition systems. |
| Long-Term Stability | 120ppm after 1000 hours; ensures reference integrity in mission-critical industrial control applications. |
Pinout & Package
LM4050AEM3-2.1/V+T uses a 3-pin SOT23 surface-mount package (1.7mm × 2.9mm × 1.3mm), optimized for space-constrained PCB layouts in automotive and portable electronics.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (+) | Anode (positive terminal) | Connects to system ground or low-impedance return path; serves as reference output node. |
| 2 (–) | Cathode (negative terminal) | Connected to regulated voltage source via series resistor; sinks shunt current to maintain 2.048V. |
| 3 (N.C.) | No connection | Must be left unconnected or tied to Pin 2; no internal function - avoids parasitic coupling. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 qualified | Validated for automotive applications per Grade 1 (-40°C to +125°C junction), supporting under-hood and ADAS subsystems. |
| No output capacitor required | Stable with any capacitive load (0–∞), eliminating BOM cost and layout constraints in battery-powered designs. |
| Laser-trimmed initial accuracy | 0.1% (±2.0mV) tolerance at +25°C enables single-point calibration in precision instrumentation. |
| Low micropower start-up | Operates down to 60µA shunt current, extending battery life in always-on IoT sensors and wearables. |
| Ultra-small SOT23 footprint | 50% smaller than legacy SOT23 references, freeing PCB area for signal routing in compact modules. |
Applications
| Automotive Body Control Module | Portable Medical Sensor |
|---|---|
Use Scenario: Reference for 12-bit ADC measuring battery voltage and cabin temperature in BCM microcontrollers. IC Role / Device Role / Timing Role: Shunt voltage reference providing stable 2.048V reference rail for analog-to-digital conversion. Use Value: AEC-Q100 qualification and ±50ppm/°C tempco ensure measurement accuracy across engine bay thermal cycles. | Use Scenario: Precision bias for low-power ECG amplifier in wearable patch monitors. IC Role / Device Role / Timing Role: Micropower shunt reference generating clean 2.048V for op-amp gain-setting and ADC reference. Use Value: 60µA minimum operating current extends coin-cell battery life beyond 12 months in continuous monitoring mode. |
| Industrial PLC Analog Input Card | Smart Energy Meter |
Use Scenario: Calibration reference for isolated 16-bit current/voltage input channels in modular I/O systems. IC Role / Device Role / Timing Role: High-stability shunt reference used during factory calibration and periodic self-test routines. Use Value: 120ppm long-term stability reduces recalibration frequency, lowering maintenance cost over 10-year field life. | Use Scenario: Reference for metrology-grade energy measurement ICs (e.g., ADE7953) in Class 0.5 smart meters. IC Role / Device Role / Timing Role: Primary voltage reference for polyphase watt-hour computation and anti-tampering diagnostics. Use Value: 0.1% initial accuracy and low 28µVRMS noise directly improve metering accuracy compliance with IEC 62053-21. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM4040A20IDBZR | 2.048V, 0.1%, SOT23, but rated only to +105°C; no AEC-Q100 qualification. | Suitable for commercial/industrial use; not approved for automotive under-hood deployment. | Select when AEC-Q100 is not required and ambient temperature stays ≤+105°C. |
| MAX6002AEUR+T | 2.048V, 0.1%, SC70 package, 45ppm/°C max tempco, but 100µA min operating current. | Better tempco but higher minimum current; less suitable for ultra-low-power wake-up circuits. | Choose for tighter thermal drift budgets where >100µA quiescent current is acceptable. |
Compared with LM4040A20IDBZR and MAX6002AEUR+T, LM4050AEM3-2.1/V+T uniquely combines AEC-Q100 qualification, 60µA minimum current, and guaranteed 50ppm/°C tempco in a production-proven SOT23 package - making it the optimal choice for automotive and high-reliability industrial reference design.
Availability
LM4050AEM3-2.1/V+T is available at Aetrix Electronics and suitable for automotive body control modules, portable medical sensors, industrial PLC analog input cards, and smart energy meters requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for LM4050AEM3-2.1/V+T 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
Analog Devices, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Wilmington, MA.
The LM4050/LM4051 family was designed specifically for precision, low-drift, micropower shunt voltage referencing in automotive, industrial, and portable applications demanding AEC-Q100 compliance and extended temperature operation.
FAQ
What is the exact output voltage tolerance of LM4050AEM3-2.1/V+T at +25°C?
The LM4050AEM3-2.1/V+T has a guaranteed initial output voltage tolerance of ±2.0mV (±0.1%) at +25°C, corresponding to a 2.0460V to 2.0500V range. This specification is laser-trimmed and verified during 100% production testing, ensuring consistent performance for high-accuracy calibration tasks in the LM4050AEM3-2.1/V+T reference circuit.
Does LM4050AEM3-2.1/V+T require an external capacitor for stability?
No, the LM4050AEM3-2.1/V+T does not require an external output capacitor for stability. Its internal design ensures unconditional stability with any capacitive load, including zero capacitance. This eliminates board space, BOM cost, and layout sensitivity - a key advantage confirmed in the LM4050AEM3-2.1/V+T datasheet's "No Output Capacitors Required" feature and stability test results.
Is LM4050AEM3-2.1/V+T qualified for automotive applications?
Yes, LM4050AEM3-2.1/V+T is AEC-Q100 qualified for automotive Grade 1 operation (–40°C to +125°C). The "/V" suffix explicitly denotes AEC-Q100 qualification per the ordering information table in the official Analog Devices datasheet. This makes LM4050AEM3-2.1/V+T suitable for under-hood and ADAS subsystems where reliability across extreme thermal cycling is mandatory.
What is the minimum shunt current needed for LM4050AEM3-2.1/V+T to regulate properly?
The LM4050AEM3-2.1/V+T requires a minimum shunt current of 60µA to maintain regulation within specifications across its full temperature range. Below this threshold, output voltage accuracy degrades. This value is specified in the Electrical Characteristics table for the 2.048V grade and is critical for designing low-power sensor interfaces where the LM4050AEM3-2.1/V+T supplies reference voltage to ultra-low-quiescent circuits.
How does the temperature coefficient of LM4050AEM3-2.1/V+T affect long-term accuracy?
The LM4050AEM3-2.1/V+T has a guaranteed maximum temperature coefficient of 50ppm/°C over –40°C to +125°C. Over this 165°C span, worst-case drift is ±8.25mV (0.4%), which - combined with its ±2.0mV initial tolerance - yields a total worst-case error of ±10.25mV (±0.5%). This is fully characterized and validated, ensuring predictable performance in the LM4050AEM3-2.1/V+T's target applications.
LM4050AEM3-2.1/V+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Reference Type:
- Shunt
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 2.048V
- Voltage - Output (Max):
- -
- Current - Output:
- 15 mA
- Tolerance:
- ±0.1%
- Temperature Coefficient:
- 50ppm/°C
- Noise - 0.1Hz to 10Hz:
- -
- Noise - 10Hz to 10kHz:
- 28µVrms
- Voltage - Input:
- -
- Current - Supply:
- -
- Current - Cathode:
- 65 µA
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
LM4050AEM3-2.1/V+T FAQ
1.How can I place an order for LM4050AEM3-2.1/V+T through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4050AEM3-2.1/V+T 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 LM4050AEM3-2.1/V+T reliable?
The price and inventory of LM4050AEM3-2.1/V+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4050AEM3-2.1/V+T is usually 5 days.
3.What payment methods are accepted for LM4050AEM3-2.1/V+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4050AEM3-2.1/V+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4050AEM3-2.1/V+T?
LM4050AEM3-2.1/V+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4050AEM3-2.1/V+T 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 LM4050AEM3-2.1/V+T?
For technical support, including LM4050AEM3-2.1/V+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4050AEM3-2.1/V+T requirements.
6.How does Aetrix verify that LM4050AEM3-2.1/V+T is sourced from the original manufacturer or authorized distributors?
All LM4050AEM3-2.1/V+T 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 LM4050AEM3-2.1/V+T meets industry standards.
7.What is the process for return or replacement of LM4050AEM3-2.1/V+T?
All LM4050AEM3-2.1/V+T units undergo pre-shipment inspection (PSI). If there is an issue with LM4050AEM3-2.1/V+T, 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 LM4050AEM3-2.1/V+T part is unused and in its original packaging.
Return procedure for LM4050AEM3-2.1/V+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM4050AEM3-2.1/V+T 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…
