My Inquiry
My Account
Analog Devices Inc./Maxim Integrated LM4050AIX3-4.1+
- Part No.:
- LM4050AIX3-4.1+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- SC-70, SOT-323
- Datasheet:
-
LM4050AIX3-4.1+.pdf
- Description:
- PRECISION MICROPOWER SHUNT VREF
- Quantity:
- Payment:
- Shipping:
Inventory:952
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LM4050AIX3-4.1+ from Maxim Integrated is a precision 4.096V shunt voltage reference in SC70-3 package, featuring 0.1% initial accuracy, ±15ppm/°C temperature coefficient (typ), 64µVRMS wideband noise (10Hz–10kHz), and stable operation from 73µA to 15mA shunt current. It serves as a compact, low-power reference for ADC/DAC biasing, portable instrumentation, and battery-powered sensor signal chains.
For engineers reviewing the LM4050AIX3-4.1+ datasheet, LM4050AIX3-4.1+ pinout, LM4050AIX3-4.1+ application, or LM4050AIX3-4.1+ equivalent, key selection criteria include guaranteed -40°C to +125°C operation, no external capacitor requirement, tolerance of capacitive loads, and compatibility with micropower systems requiring <100µA quiescent current.
Technical Context
The LM4050AIX3-4.1+ implements a laser-trimmed bandgap core in BiCMOS process, delivering fixed 4.096V reverse breakdown voltage with dynamic impedance ≤1.0Ω at 1mA. Its internal architecture eliminates need for output stabilization capacitors while maintaining stability across 0–1µF load capacitance.
Designed for high-accuracy analog front-ends, it supports wide shunt-current range (73µA min, 15mA max) and exhibits long-term stability of 120ppm over 1000 hours. The device clamps to ~0.7V below ground under forward bias up to 10mA, enabling bidirectional protection in mixed-signal circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 4.096V ±4.1mV (A-grade, 25°C); enables precise 12-bit DAC/ADC full-scale calibration |
| Initial Accuracy | ±0.1% (max); reduces system calibration burden in portable medical and test equipment |
| Temp Coefficient | ±15ppm/°C (typ); ensures ≤±0.6% total drift over -40°C to +125°C operating range |
| Shunt Current Range | 73µA to 15mA; supports ultra-low-power sleep modes and high-current regulation simultaneously |
| Wideband Noise | 64µVRMS (10Hz–10kHz); maintains SNR >95dB in 16-bit data acquisition systems |
| Dynamic Impedance | ≤1.0Ω at 1mA; minimizes output voltage shift under load transients up to 2.5mA |
| Long-Term Stability | 120ppm (1000h); ensures reference integrity in unattended industrial monitoring nodes |
Pinout & Package
LM4050AIX3-4.1+ uses the 3-pin SC70 surface-mount package (1.8mm × 1.8mm × 0.9mm), 50% smaller than SOT23-3, optimized for space-constrained PCB layouts in handheld devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (+) | Anode / Positive Terminal | Connected to system ground or low-impedance return path; sinks shunt current into this node |
| 2 (−) | Cathode / Negative Terminal | Provides stable 4.096V reference output relative to pin 1; connects to load and sense point |
| 3 (N.C.) | No Connection | Must be left floating or tied to pin 2; no internal connection - avoids parasitic coupling paths |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-small SC70-3 package | 1.8mm × 1.8mm footprint saves >50% board area vs. SOT23-3, critical for wearables and IoT sensors |
| No output capacitor required | Stable with 0–1µF capacitive loads; eliminates BOM cost and layout risk of external COUT |
| Low 64µVRMS noise | Enables high-resolution measurements without post-filtering; supports 16-bit+ precision systems |
| Guaranteed -40°C to +125°C operation | Validated performance across full automotive and industrial ambient ranges without derating |
| 60µA–15mA shunt-current capability | Supports both micropower standby (e.g., 100µA) and active regulation (e.g., 10mA) in same design |
Applications
| Portable Data Loggers | Industrial Sensor Transmitters |
|---|---|
|
Use Scenario: Battery-powered environmental sensor node logging temperature, humidity, and pressure every 10 seconds. IC Role / Device Role / Timing Role: Provides stable 4.096V reference for 12-bit SAR ADC and microcontroller VREF input. Use Value: Enables ±0.1% measurement accuracy over full temperature range with <1µA average quiescent contribution. |
Use Scenario: 4–20mA loop-powered transmitter conditioning thermocouple and RTD signals in factory automation. IC Role / Device Role / Timing Role: Supplies precision reference for signal conditioning amplifier gain-setting and ADC conversion. Use Value: Maintains 0.1% system accuracy despite 125°C junction temperatures and 15mA loop current variations. |
| Medical Wearables | Test & Measurement Front-Ends |
|
Use Scenario: ECG patch measuring sub-mV biopotentials with ultra-low power consumption. IC Role / Device Role / Timing Role: Bias reference for instrumentation amplifier and low-noise PGA stages. Use Value: 64µVRMS noise floor preserves signal integrity; SC70 size enables miniaturized flex PCB integration. |
Use Scenario: Portable multimeter with dual-slope ADC requiring stable, low-drift reference. IC Role / Device Role / Timing Role: Primary voltage reference for integrating ADC and auto-zero calibration circuitry. Use Value: ±0.1% initial accuracy and 120ppm/1000h stability reduce recalibration frequency in field-deployed units. |
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 (2.5V–36V) vs. fixed 4.096V; higher 100ppm/°C tempco; 120µA min cathode current | Suitable where programmability or wider voltage range needed; less accurate for 4.096V-specific systems | Select TLVH431AIDBZR only if adjustable output or higher voltage capability is required; not drop-in for 4.096V precision use cases |
| ADR3440ARJZ-R7 | Series reference (not shunt); 4.096V fixed; 10ppm/°C max tempco; requires 100µA supply current; larger SOT23-5 | Better tempco but needs dedicated supply rail; incompatible topology for shunt-based bias networks | Choose ADR3440ARJZ-R7 only in new designs with available supply headroom and layout space; not compatible with existing LM4050 shunt topologies |
Compared with TLVH431AIDBZR and ADR3440ARJZ-R7, LM4050AIX3-4.1+ uniquely combines fixed 4.096V output, 0.1% accuracy, SC70 size, and true shunt operation - making it optimal for space-constrained, single-supply, micropower systems where output voltage must match standard 12-bit DAC full-scale points.
Availability
LM4050AIX3-4.1+ is available at Aetrix Electronics and suitable for portable instrumentation, industrial sensor transmitters, and medical wearables requiring stable component supply with RoHS-compliant lead-free finish.
Supply support for LM4050AIX3-4.1+ 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 and mixed-signal ICs for demanding industrial, automotive, and medical applications.
The LM4050/LM4051 family delivers micropower shunt references optimized for space-critical, battery-operated systems needing high accuracy without external capacitors.
FAQ
What is the minimum operating current for LM4050AIX3-4.1+?
The LM4050AIX3-4.1+ requires a minimum shunt current of 73µA to maintain regulation at 4.096V. This value is specified at TA = -40°C to +125°C and ensures stable output voltage across the full industrial temperature range. Operating below this threshold may result in loss of accuracy or dropout behavior.
Does LM4050AIX3-4.1+ require an external output capacitor?
No, LM4050AIX3-4.1+ does not require an external output capacitor for stability. It is designed to remain stable with any capacitive load from 0 to 1µF, eliminating the need for additional components and simplifying layout in compact designs.
What is the temperature coefficient specification for LM4050AIX3-4.1+?
The LM4050AIX3-4.1+ has a typical temperature coefficient of ±15ppm/°C over -40°C to +125°C. This translates to a maximum output voltage drift of ±0.6% across the full temperature range, supporting high-accuracy applications without active compensation.
How is pin 3 used on LM4050AIX3-4.1+?
Pin 3 of LM4050AIX3-4.1+ is labeled N.C. (No Connection) and must be left floating or connected to pin 2 (cathode). It has no internal connection and serves only as a mechanical pad; connecting it elsewhere may introduce noise or leakage paths.
Is LM4050AIX3-4.1+ RoHS compliant?
Yes, LM4050AIX3-4.1+ is RoHS/lead-free compliant, as indicated by the "+" suffix in the part number. It meets EU Directive 2011/65/EU requirements and contains no lead, mercury, cadmium, hexavalent chromium, PBB, or PBDE above threshold limits.
LM4050AIX3-4.1+ 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+ FAQ
1.How can I place an order for LM4050AIX3-4.1+ through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4050AIX3-4.1+ 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+ reliable?
The price and inventory of LM4050AIX3-4.1+ 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+ is usually 5 days.
3.What payment methods are accepted for LM4050AIX3-4.1+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4050AIX3-4.1+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4050AIX3-4.1+?
LM4050AIX3-4.1+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4050AIX3-4.1+ 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+?
For technical support, including LM4050AIX3-4.1+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4050AIX3-4.1+ requirements.
6.How does Aetrix verify that LM4050AIX3-4.1+ is sourced from the original manufacturer or authorized distributors?
All LM4050AIX3-4.1+ 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+ meets industry standards.
7.What is the process for return or replacement of LM4050AIX3-4.1+?
All LM4050AIX3-4.1+ units undergo pre-shipment inspection (PSI). If there is an issue with LM4050AIX3-4.1+, 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+ part is unused and in its original packaging.
Return procedure for LM4050AIX3-4.1+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM4050AIX3-4.1+ 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…
