My Inquiry
My Account
Analog Devices Inc./Maxim Integrated LM4050AIX3-4.1+T
- Part No.:
- LM4050AIX3-4.1+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- SC-70, SOT-323
- Datasheet:
-
LM4050AIX3-4.1+T.pdf
- Description:
- PRECISION MICROPOWER SHUNT VREF
- Quantity:
- Payment:
- Shipping:
Inventory:22,500
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LM4050AIX3-4.1+T from Maxim Integrated is a precision 4.096V shunt voltage reference in SC70-3 package, featuring 0.1% initial accuracy, ±15ppm/°C temperature coefficient over –40°C to +125°C, 60µA–15mA operating current range, and 64µVRMS wideband noise (10Hz–10kHz). It serves as a stable reference in ADC/DAC biasing, portable instrumentation, and battery-powered sensor interfaces.
For engineers reviewing the LM4050AIX3-4.1+T datasheet, LM4050AIX3-4.1+T pinout, LM4050AIX3-4.1+T application, or LM4050AIX3-4.1+T equivalent, key selection criteria include guaranteed 4.096V output tolerance (±4.1mV at +25°C), no external capacitor requirement, capacitive load tolerance, and SC70 footprint compatibility for space-constrained PCBs.
Technical Context
The LM4050AIX3-4.1+T implements a laser-trimmed bandgap core with two-terminal shunt topology, operating as a precision zener-like device that sinks current to maintain fixed reverse breakdown voltage. Its internal BiCMOS process enables low dynamic impedance (0.5–1.0Ω) and stable regulation across 60µA–15mA shunt current.
It guarantees performance over –40°C to +125°C without external stabilization components, tolerates any output capacitance, and exhibits <120ppm long-term stability after 1000 hours. The N.C. pin (Pin 3) must be left floating or tied to Pin 2 per absolute maximum ratings and pin configuration guidance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 4.096V ±4.1mV at +25°C - ensures precise 12-bit DAC/ADC full-scale reference alignment |
| Initial Accuracy | 0.1% - eliminates need for system-level calibration in portable medical or test equipment |
| Tempco | ±15ppm/°C - contributes ≤±0.6% total error over full –40°C to +125°C range |
| Operating Current | 60µA to 15mA - supports micropower sleep modes and high-current precision sensing simultaneously |
| Wideband Noise | 64µVRMS (10Hz–10kHz) - minimizes quantization uncertainty in 16-bit+ data acquisition systems |
| Dynamic Impedance | 0.5–1.0Ω at 1mA - maintains voltage stability under fast load transients up to 10mA step |
| Long-Term Stability | 120ppm @ 1000h - predicts <0.012% drift over 5-year product lifetime |
Pinout & Package
LM4050AIX3-4.1+T uses the 3-pin SC70 surface-mount package (1.8mm × 1.8mm), 50% smaller than SOT23, optimized for ultra-compact layouts in handheld and wearable electronics.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (+) | Anode / Cathode Reference Terminal | Positive terminal of shunt reference; connects to regulated node or feedback point in voltage divider networks |
| Pin 2 (–) | Cathode / Anode Reference Terminal | Negative terminal; forms reference potential; must be connected to system ground or return path |
| Pin 3 (N.C.) | No Connection | Must remain unconnected or tied directly to Pin 2; floating connection prevents parasitic leakage paths |
Key Features
| Feature | Design Value |
|---|---|
| Laser-trimmed resistor network | Enables 0.1% initial accuracy without post-package trimming, reducing BOM cost and test time |
| No output capacitor required | Eliminates external stabilization components and associated board area, simplifying layout for wearables and IoT nodes |
| Capacitive load tolerance | Stable operation with any output capacitance (0–∞), enabling direct interface with ADC input caps or filtering networks |
| Ultra-small SC70-3 footprint | 1.8mm × 1.8mm outline reduces PCB real estate by 50% vs. SOT23, critical for miniaturized medical sensors |
| Guaranteed –40°C to +125°C operation | Validated performance across automotive under-hood, industrial control, and outdoor environmental monitoring use cases |
Applications
| Portable Data Loggers | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Battery-powered environmental sensor node measuring temperature, humidity, and pressure over multi-year deployments. IC Role / Device Role / Timing Role: Provides stable 4.096V reference for successive-approximation ADCs converting analog sensor outputs. Use Value: 0.1% accuracy and ±15ppm/°C tempco ensure <±0.7% total reference error across operating temperature, meeting Class A sensor accuracy requirements. | Use Scenario: 4–20mA loop-powered transmitter with local analog signal conditioning before digitization. IC Role / Device Role / Timing Role: Supplies precision reference for op-amp gain-setting resistors and ADC reference input in isolated front-end circuitry. Use Value: Micropower 60µA minimum operating current enables operation during loop power brownouts while maintaining reference integrity. |
| Handheld Medical Instruments | Automotive Cabin Air Quality Monitors |
Use Scenario: Portable blood glucose meter requiring FDA-grade measurement repeatability and low-power standby mode. IC Role / Device Role / Timing Role: References the 16-bit sigma-delta ADC sampling electrochemical test strip signals. Use Value: 64µVRMS noise floor limits ADC effective resolution loss to <0.5 LSB, preserving diagnostic sensitivity. | Use Scenario: In-cabin CO₂ and VOC sensor module mounted near HVAC ducts with ambient temperatures up to +105°C. IC Role / Device Role / Timing Role: Stabilizes reference voltage for gas-sensing amplifier stages and microcontroller ADC inputs. Use Value: Guaranteed operation to +125°C and 120ppm long-term stability support 10-year automotive lifecycle without recalibration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLVH431AIDBZR | Adjustable 1.24V–18V output; 0.5% initial accuracy; higher 75µA min current; SOT23-3 package | Requires external resistor divider; less accurate; larger footprint than SC70 | Choose when adjustable output or higher voltage capability is needed; not drop-in for fixed 4.096V designs |
| REF3040AIDBZR | 4.096V fixed output; 0.2% initial accuracy; 50ppm/°C tempco; 50µA–25mA range; SOT23-3 | Lower accuracy grade; same voltage but wider tolerance; higher min current than LM4050AIX3-4.1+T | Acceptable where 0.2% accuracy suffices and SOT23 layout reuse is prioritized over SC70 miniaturization |
Compared with TLVH431AIDBZR and REF3040AIDBZR, LM4050AIX3-4.1+T delivers superior 0.1% accuracy and smallest SC70 footprint, making it optimal for space- and precision-critical portable instrumentation where fixed 4.096V is required.
Availability
LM4050AIX3-4.1+T is available at Aetrix Electronics and suitable for portable instrumentation, industrial sensor transmitters, handheld medical devices, and automotive cabin monitoring systems requiring stable component supply and RoHS-compliant sourcing.
Supply support for LM4050AIX3-4.1+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
Maxim Integrated (now part of Analog Devices) designs precision analog, mixed-signal, and power management ICs for demanding industrial, automotive, and medical applications.
The LM4050/LM4051 family was engineered to deliver high-accuracy, low-drift shunt references in ultra-small packages for battery-powered and space-constrained systems where traditional three-terminal references are impractical.
FAQ
What is the exact output voltage tolerance of LM4050AIX3-4.1+T at +25°C?
The LM4050AIX3-4.1+T has a guaranteed reverse breakdown voltage of 4.096V with ±4.1mV (±0.1%) tolerance at +25°C, as specified in the A-grade electrical characteristics table for the 4.096V variant. This tight tolerance enables direct use in 12-bit systems without trimming.
Does LM4050AIX3-4.1+T require an external output capacitor for stability?
No, LM4050AIX3-4.1+T does not require an external output capacitor. Its internal design ensures stability with any capacitive load, including zero capacitance, eliminating the need for external components and simplifying PCB layout in compact designs.
What is the minimum operating current for LM4050AIX3-4.1+T, and why is it important?
The LM4050AIX3-4.1+T requires a minimum shunt current of 60µA to maintain regulation. Operating below this threshold risks loss of reference accuracy and increased output impedance, especially critical in low-power sleep modes of portable devices.
Can Pin 3 of LM4050AIX3-4.1+T be left unconnected, or must it be tied to Pin 2?
Per the official pin description and absolute maximum ratings, Pin 3 (N.C.) of LM4050AIX3-4.1+T must be left floating or connected directly to Pin 2 (–). Leaving it unconnected is acceptable, but it must never be driven or biased independently to avoid leakage-induced errors.
How does the temperature coefficient of LM4050AIX3-4.1+T impact system accuracy over –40°C to +125°C?
With a guaranteed ±15ppm/°C temperature coefficient, LM4050AIX3-4.1+T contributes ≤±0.6% additional error over its full operating range (ΔT = 165°C), combining with its 0.1% initial accuracy to yield ≤±0.7% total reference error-sufficient for most 12-bit measurement systems.
LM4050AIX3-4.1+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- SC-70, SOT-323
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Reference Type:
- Shunt
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 4.096V
- Voltage - Output (Max):
- -
- Current - Output:
- 15 mA
- Tolerance:
- ±0.1%
- Temperature Coefficient:
- 50ppm/°C
- Noise - 0.1Hz to 10Hz:
- -
- Noise - 10Hz to 10kHz:
- 64µVrms
- Voltage - Input:
- -
- Current - Supply:
- -
- Current - Cathode:
- 73 µA
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-3
LM4050AIX3-4.1+T FAQ
1.How can I place an order for LM4050AIX3-4.1+T through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4050AIX3-4.1+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 LM4050AIX3-4.1+T reliable?
The price and inventory of LM4050AIX3-4.1+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4050AIX3-4.1+T is usually 5 days.
3.What payment methods are accepted for LM4050AIX3-4.1+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4050AIX3-4.1+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4050AIX3-4.1+T?
LM4050AIX3-4.1+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4050AIX3-4.1+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 LM4050AIX3-4.1+T?
For technical support, including LM4050AIX3-4.1+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4050AIX3-4.1+T requirements.
6.How does Aetrix verify that LM4050AIX3-4.1+T is sourced from the original manufacturer or authorized distributors?
All LM4050AIX3-4.1+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 LM4050AIX3-4.1+T meets industry standards.
7.What is the process for return or replacement of LM4050AIX3-4.1+T?
All LM4050AIX3-4.1+T units undergo pre-shipment inspection (PSI). If there is an issue with LM4050AIX3-4.1+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 LM4050AIX3-4.1+T part is unused and in its original packaging.
Return procedure for LM4050AIX3-4.1+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM4050AIX3-4.1+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…
