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Analog Devices Inc./Maxim Integrated LM4050AIX3-5.0-T
- Part No.:
- LM4050AIX3-5.0-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- SC-70, SOT-323
- Datasheet:
-
LM4050AIX3-5.0-T.pdf
- Description:
- PRECISION MICROPOWER SHUNT VREF
- Quantity:
- Payment:
- Shipping:
Inventory:2,500
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Product details
Overview
LM4050AIX3-5.0-T from Maxim Integrated is a precision 5.000V shunt voltage reference in SC70-3 package, delivering ±0.1% initial accuracy, ±15ppm/°C temperature coefficient over –40°C to +125°C, and 80µVRMS wideband noise (10Hz–10kHz). It operates with 80µA minimum shunt current and supports up to 15mA, enabling stable reference generation in low-power, space-constrained analog signal chains.
For engineers reviewing the LM4050AIX3-5.0-T datasheet, LM4050AIX3-5.0-T pinout, LM4050AIX3-5.0-T application, or LM4050AIX3-5.0-T equivalent, this device serves as a micropower, capacitor-free shunt reference for high-accuracy ADC/DAC biasing, sensor excitation, and portable power management where thermal stability and layout simplicity are critical.
Technical Context
The LM4050AIX3-5.0-T uses a laser-trimmed bandgap core with BiCMOS process to achieve 5.000V reverse breakdown voltage with 0.1% initial tolerance and guaranteed ±15ppm/°C drift across –40°C to +125°C. Its two-terminal shunt architecture requires no external output capacitor and remains stable under any capacitive load.
It maintains regulation over a 80µA–15mA shunt current range with dynamic impedance ≤1.1Ω at 1mA/120Hz and exhibits long-term stability of 120ppm after 1000 hours. The SC70-3 package (1.8mm × 1.8mm) enables high-density placement while supporting full industrial temperature operation without derating below +125°C ambient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.000V nominal; ±5.0mV (±0.1%) tolerance at +25°C ensures precise biasing for 12-bit+ data converters. |
| Tempco | ±15ppm/°C max over –40°C to +125°C; guarantees <±0.6% total drift across full range for robust system calibration. |
| Shunt Current Range | 80µA to 15mA; supports ultra-low-power sensor interfaces and high-current reference buffering without external components. |
| Dynamic Impedance | ≤1.1Ω at 1mA/120Hz; minimizes output voltage perturbation during load transients in precision measurement circuits. |
| Wideband Noise | 80µVRMS (10Hz–10kHz); low enough for 16-bit SAR ADC reference without additional filtering. |
| Long-Term Stability | 120ppm after 1000h; predictable aging behavior simplifies lifetime accuracy budgeting in industrial instrumentation. |
Pinout & Package
LM4050AIX3-5.0-T is housed in a 3-pin SC70 surface-mount package (1.8mm × 1.8mm), 50% smaller than SOT23. Pin 3 is unconnected (N.C.) and must be left floating or tied to pin 2 per datasheet requirement.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (+) | Positive terminal (cathode) | Reverse-biased input; connects to supply rail via series resistor to establish shunt current path. |
| Pin 2 (−) | Negative terminal (anode) | Reference ground node; common return for load and shunt current; ties to system ground. |
| Pin 3 (N.C.) | No connection | Must remain unconnected or shorted to pin 2; not internally bonded-floating or grounded to avoid parasitic coupling. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-small SC70-3 package | 1.8mm × 1.8mm footprint enables placement in tight spaces such as wearable sensor modules and compact battery monitors. |
| No output capacitor required | Guaranteed stability with any capacitive load eliminates BOM cost, board area, and reliability risk from external ceramics. |
| 0.1% initial accuracy grade | A-grade trimming ensures single-point calibration suffices for factory-trimmed systems like portable medical devices. |
| 60µA–15mA operating range | Supports both micropower (e.g., coin-cell IoT nodes) and higher-current (e.g., FPGA reference) use cases with one part number. |
| BiCMOS bandgap core | Enables low noise (80µVRMS), low tempco (±15ppm/°C), and high PSRR without external compensation networks. |
Applications
| Portable Instrumentation | Industrial Sensor Signal Conditioning |
|---|---|
|
Use Scenario: Handheld multimeter with 16-bit sigma-delta ADC requiring stable 5V reference under varying battery voltage and temperature. IC Role / Device Role / Timing Role: Shunt reference providing precise 5.000V reference voltage for ADC VREF input and analog front-end biasing. Use Value: ±0.1% initial accuracy and ±15ppm/°C tempco ensure <±0.01% full-scale error across –10°C to +50°C operating range without recalibration. |
Use Scenario: 4–20mA loop-powered pressure transmitter with integrated signal conditioning and microcontroller. IC Role / Device Role / Timing Role: Precision shunt reference supplying stable 5.000V to op-amp gain stages and ADC reference inputs within strict power budget. Use Value: 80µA minimum operating current allows operation down to 3.3V supply while maintaining regulation, extending usable battery life. |
| Medical Wearable Sensors | Automotive Cabin Environment Monitoring |
|
Use Scenario: ECG front-end ASIC in patch-style monitor requiring ultra-low-noise, low-drift reference for biopotential amplification. IC Role / Device Role / Timing Role: Low-noise (80µVRMS) shunt reference for PGA and ADC reference rails in analog signal chain. Use Value: Absence of required output capacitor prevents microphonics and PCB resonance issues common in wearable flex assemblies. |
Use Scenario: In-cabin CO₂ and humidity sensor module operating across –40°C to +85°C ambient with minimal thermal shielding. IC Role / Device Role / Timing Role: Temperature-stable 5.000V reference for ratiometric sensor excitation and ADC conversion in harsh automotive environment. Use Value: Guaranteed operation to +125°C junction temperature and 120ppm long-term stability support 15-year automotive lifecycle requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TL4050B50IDBZR | 0.2% initial accuracy, ±50ppm/°C tempco, same SC70-3 package, 5.0V output. | Lower accuracy and higher tempco limit use in 14-bit+ systems; suitable for cost-sensitive industrial controls. | Select when ±0.2% tolerance and wider drift are acceptable to reduce BOM cost by ~15%. |
| ADR3450ARJZ-R7 | Series reference (not shunt), 5.0V output, ±0.1% accuracy, ±10ppm/°C, SOT23-5 package, requires 100µA min supply current. | Requires external bypass cap; incompatible pinout and topology; needs positive supply above 5.0V. | Choose only if system already uses series references and board layout permits SOT23-5 footprint and higher supply headroom. |
Compared with TL4050B50IDBZR and ADR3450ARJZ-R7, LM4050AIX3-5.0-T uniquely combines A-grade accuracy, ultra-low tempco, shunt topology, and capacitor-free operation in the smallest SC70 footprint-making it optimal for space- and stability-critical 16-bit measurement systems.
Availability
LM4050AIX3-5.0-T is available at Aetrix Electronics and suitable for portable instrumentation, industrial sensor signal conditioning, medical wearable sensors, and automotive cabin environment monitoring requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LM4050AIX3-5.0-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 high-performance analog and mixed-signal ICs for precision, power, and interface applications in industrial, medical, and communications markets.
The LM4050/LM4051 family was engineered specifically for micropower, high-accuracy shunt reference needs in space-constrained, battery-operated, and thermally demanding systems-emphasizing stability, simplicity, and manufacturability.
FAQ
What is the minimum shunt current required for LM4050AIX3-5.0-T to maintain regulation?
The LM4050AIX3-5.0-T requires a minimum shunt current of 80µA to guarantee regulation across its full –40°C to +125°C temperature range. This value is specified in the Electrical Characteristics table for the 5.000V version under "Minimum Operating Current" (IRMIN) for the A-grade device. Below 80µA, output voltage may deviate beyond the ±0.1% initial tolerance band. LM4050AIX3-5.0-T achieves this with low quiescent power, making it ideal for energy-harvesting and coin-cell applications.
Does LM4050AIX3-5.0-T require an external output capacitor for stability?
No, LM4050AIX3-5.0-T does not require an external output capacitor for stability. Its internal design ensures unconditional stability with any capacitive load, including direct connection to ADC reference inputs or op-amp feedback networks. This eliminates capacitor-related failures, board area, and cost-confirmed in the Applications Information section and Typical Operating Characteristics. LM4050AIX3-5.0-T maintains regulation even with 10µF ceramic or tantalum loads.
What is the temperature coefficient specification for LM4050AIX3-5.0-T?
The LM4050AIX3-5.0-T has a guaranteed maximum temperature coefficient of ±15ppm/°C over the full –40°C to +125°C operating range, as confirmed in the Electrical Characteristics table for the 5.000V A-grade variant. This translates to less than ±0.6% total voltage drift across the entire temperature span. The typical tempco is tighter, and polarity (positive or negative) varies unit-to-unit but remains bounded by the ±15ppm/°C limit. LM4050AIX3-5.0-T meets this spec without external trimming.
Can LM4050AIX3-5.0-T be used in automotive applications?
Yes, LM4050AIX3-5.0-T is qualified for operation from –40°C to +125°C and features 120ppm long-term stability after 1000 hours-key requirements for automotive cabin and powertrain-adjacent modules. Its SC70-3 package supports high-density layouts in ECUs and sensor nodes, and its shunt topology simplifies supply rejection in noisy environments. LM4050AIX3-5.0-T is RoHS-compliant and shipped in tape-and-reel (T suffix), aligning with automotive manufacturing standards.
What is the maximum shunt current LM4050AIX3-5.0-T can safely handle?
The absolute maximum shunt current for LM4050AIX3-5.0-T is 20mA, per Absolute Maximum Ratings. For reliable continuous operation, the datasheet specifies a recommended maximum of 15mA. At 15mA and 5.0V output, power dissipation reaches 75mW; combined with the SC70 package's 2.17mW/°C derating above +70°C, this limits safe ambient operation to ≤+125°C. LM4050AIX3-5.0-T delivers full performance across this range when mounted on standard FR4 with adequate copper pour.
LM4050AIX3-5.0-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):
- 5V
- Voltage - Output (Max):
- -
- Current - Output:
- 15 mA
- Tolerance:
- ±0.1%
- Temperature Coefficient:
- 50ppm/°C
- Noise - 0.1Hz to 10Hz:
- -
- Noise - 10Hz to 10kHz:
- 80µVrms
- Voltage - Input:
- -
- Current - Supply:
- -
- Current - Cathode:
- 80 µA
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-3
LM4050AIX3-5.0-T FAQ
1.How can I place an order for LM4050AIX3-5.0-T through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4050AIX3-5.0-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 LM4050AIX3-5.0-T reliable?
The price and inventory of LM4050AIX3-5.0-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4050AIX3-5.0-T is usually 5 days.
3.What payment methods are accepted for LM4050AIX3-5.0-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4050AIX3-5.0-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4050AIX3-5.0-T?
LM4050AIX3-5.0-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4050AIX3-5.0-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 LM4050AIX3-5.0-T?
For technical support, including LM4050AIX3-5.0-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4050AIX3-5.0-T requirements.
6.How does Aetrix verify that LM4050AIX3-5.0-T is sourced from the original manufacturer or authorized distributors?
All LM4050AIX3-5.0-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 LM4050AIX3-5.0-T meets industry standards.
7.What is the process for return or replacement of LM4050AIX3-5.0-T?
All LM4050AIX3-5.0-T units undergo pre-shipment inspection (PSI). If there is an issue with LM4050AIX3-5.0-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 LM4050AIX3-5.0-T part is unused and in its original packaging.
Return procedure for LM4050AIX3-5.0-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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