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Analog Devices Inc./Maxim Integrated LM4050AIM3-5.0
- Part No.:
- LM4050AIM3-5.0
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
LM4050AIM3-5.0.pdf
- Description:
- IC VREF SHUNT 0.1% SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:651
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Product details
Overview
LM4050AIM3-5.0 from Maxim Integrated is a precision 5.000V shunt voltage reference in SOT23-3 package, designed for stable biasing of ADCs, DACs, and sensor signal chains in space-constrained industrial and portable systems. It delivers ±5.0mV initial accuracy (0.1%), 50ppm/°C max temperature coefficient over –40°C to +125°C, and operates from 60µA to 15mA shunt current without external capacitors.
For engineers reviewing the LM4050AIM3-5.0 datasheet, LM4050AIM3-5.0 pinout, LM4050AIM3-5.0 application, or LM4050AIM3-5.0 equivalent, key selection criteria include guaranteed 5.000V output tolerance at 100µA, low 80µVRMS wideband noise (10Hz–10kHz), and compatibility with capacitive loads up to 1µF while maintaining stability.
Technical Context
The LM4050AIM3-5.0 uses a laser-trimmed bandgap core to achieve fixed 5.000V reverse breakdown voltage with ±15ppm/°C typical tempco. Its two-terminal shunt architecture sinks variable current (60µA–15mA) to maintain regulation, eliminating need for series pass elements or output capacitors.
It features ultra-low dynamic impedance (0.5–1.1Ω at 1mA/120Hz), enabling stable reference performance under load transients. The device tolerates any output capacitance and exhibits 120ppm long-term stability after 1000 hours, making it suitable for high-reliability measurement front-ends.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.000V ±5.0mV at TA = +25°C - ensures precise full-scale calibration for 12-bit+ ADCs |
| Initial Accuracy | ±0.1% (A-grade) - eliminates need for system-level trimming in factory calibration |
| Tempco | 50ppm/°C max over –40°C to +125°C - supports operation in automotive engine control and industrial PLC environments |
| Shunt Current Range | 60µA to 15mA - enables use with high-impedance dividers or low-power microcontrollers |
| Wideband Noise | 80µVRMS (10Hz–10kHz) - minimizes added noise in precision analog-to-digital conversion |
| Dynamic Impedance | 0.5–1.1Ω at 1mA/120Hz - maintains voltage stability during rapid load current changes |
| Long-Term Stability | 120ppm after 1000h - ensures consistent reference accuracy across product lifetime |
Pinout & Package
LM4050AIM3-5.0 is housed in a RoHS-compliant 3-pin SOT23-3 surface-mount package (2.92mm × 1.3mm × 1.0mm), optimized for automated assembly and thermal performance in dense PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (+) | Anode / Cathode Reference Terminal | Positive terminal of shunt reference; connects to regulated node or feedback point in voltage divider |
| 2 (−) | Cathode / Ground Reference Terminal | Negative terminal; must be connected to system ground or common reference plane |
| 3 (N.C.) | No Connection | Must remain floating or tied directly to Pin 2; no internal connection or function |
Key Features
| Feature | Design Value |
|---|---|
| Fixed 5.000V Output | Enables direct interface with 5V logic and legacy analog subsystems without level-shifting |
| No Output Capacitor Required | Reduces BOM count and board area; simplifies layout for battery-powered IoT sensors |
| Tolerates Any Capacitive Load | Supports integration with noisy digital ICs or long traces without oscillation risk |
| Ultra-Small SOT23-3 Package | 50% smaller footprint than SC70 variants - ideal for wearables and compact medical devices |
| –40°C to +125°C Operation | Validated for under-hood automotive, industrial motor drives, and outdoor infrastructure |
Applications
| Portable Data Acquisition | Industrial Sensor Transmitters |
|---|---|
Use Scenario: Battery-powered handheld multimeter measuring DC voltage with 16-bit SAR ADC. IC Role / Device Role / Timing Role: Provides stable 5.000V reference for ADC full-scale calibration and offset nulling. Use Value: ±0.1% initial accuracy and 50ppm/°C tempco ensure <0.02% total error across operating temperature range. | Use Scenario: 4–20mA loop-powered pressure transmitter in oil & gas field instrumentation. IC Role / Device Role / Timing Role: Supplies precision excitation voltage to bridge sensor and reference for DAC-controlled current output. Use Value: 60µA minimum operating current allows operation down to 3.3V supply with minimal headroom loss. |
| Medical Patient Monitoring | Automotive Body Control Modules |
Use Scenario: ECG front-end amplifier with programmable gain and 24-bit delta-sigma ADC. IC Role / Device Role / Timing Role: Delivers low-noise 5.000V reference for analog signal conditioning and ADC reference input. Use Value: 80µVRMS wideband noise prevents degradation of SNR in sub-µV biomedical signal paths. | Use Scenario: Cabin temperature sensor module interfacing with 12-bit MCU ADC in HVAC control unit. IC Role / Device Role / Timing Role: Supplies accurate reference for thermistor voltage divider and on-chip ADC calibration. Use Value: Guaranteed operation to +125°C 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 |
|---|---|---|---|
| TLVH431AIDBZR | Adjustable output (2.5V–36V); 1% initial accuracy; 100ppm/°C max tempco; 1mA min cathode current | Requires external resistor network for 5V setting; higher quiescent current reduces battery life | Choose when adjustable reference or higher voltage capability is needed; not drop-in for fixed 5V designs |
| REF5050AIDR | Series reference; 5.000V output; 0.05% initial accuracy; 3ppm/°C max tempco; requires 100µA–10mA supply current | Higher accuracy and lower noise but needs dedicated supply rail and bypass capacitor | Prefer for metrology-grade systems where cost and board space allow series topology trade-offs |
Compared with TLVH431AIDBZR and REF5050AIDR, the LM4050AIM3-5.0 offers the lowest component count for fixed 5V shunt reference applications, with guaranteed 0.1% accuracy and no external components required - critical for high-volume portable electronics.
Availability
LM4050AIM3-5.0 is available at Aetrix Electronics and suitable for portable data acquisition, industrial sensor transmitters, and medical patient monitoring requiring stable component supply across extended temperature ranges and multi-year production cycles.
Supply support for LM4050AIM3-5.0 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 series targets space-constrained, micropower systems needing stable voltage references without external compensation - especially where SOT23 packaging and wide temperature operation are mandatory.
FAQ
What is the guaranteed output voltage tolerance of LM4050AIM3-5.0 at +25°C?
The LM4050AIM3-5.0 is an A-grade device with guaranteed output voltage of 5.000V ±5.0mV (±0.1%) at TA = +25°C. This specification is laser-trimmed and 100% production tested, ensuring tight calibration without post-manufacture adjustment. The LM4050AIM3-5.0 maintains this accuracy across its full operating current range of 60µA to 15mA.
Does LM4050AIM3-5.0 require an external output capacitor for stability?
No, the LM4050AIM3-5.0 does not require an external output capacitor and remains stable with any capacitive load - including 0µF to 1µF - due to its inherent shunt architecture and low dynamic impedance. This eliminates BOM cost and layout complexity, making LM4050AIM3-5.0 ideal for compact, low-power designs where board space is constrained.
What is the minimum operating current for LM4050AIM3-5.0?
The LM4050AIM3-5.0 requires a minimum shunt current of 60µA to maintain regulation across its full temperature range (–40°C to +125°C). At 100µA test condition, its typical wideband noise is 80µVRMS (10Hz–10kHz), and dynamic impedance is 0.5–1.1Ω. Operating below 60µA risks loss of regulation and increased output drift.
Can LM4050AIM3-5.0 be used in automotive under-hood applications?
Yes, the LM4050AIM3-5.0 is specified for operation from –40°C to +125°C and qualified per AEC-Q200 stress testing requirements for passive components. Its 50ppm/°C max temperature coefficient, 120ppm long-term stability, and robust SOT23-3 package make LM4050AIM3-5.0 suitable for engine control units, cabin HVAC sensors, and body control modules where ambient temperatures exceed 85°C.
How is Pin 3 configured on LM4050AIM3-5.0?
Pin 3 of the LM4050AIM3-5.0 is labeled N.C. (No Connection) and must either be left floating or connected directly to Pin 2 (−). It has no internal connection and serves no electrical function. Incorrect routing - such as connecting Pin 3 to a signal net or power rail - may compromise device reliability or cause unexpected behavior in the LM4050AIM3-5.0 reference circuit.
LM4050AIM3-5.0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Obsolete
- 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:
- 93µVrms
- Voltage - Input:
- -
- Current - Supply:
- -
- Current - Cathode:
- 80 µA
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
LM4050AIM3-5.0 FAQ
1.How can I place an order for LM4050AIM3-5.0 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4050AIM3-5.0 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 LM4050AIM3-5.0 reliable?
The price and inventory of LM4050AIM3-5.0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4050AIM3-5.0 is usually 5 days.
3.What payment methods are accepted for LM4050AIM3-5.0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4050AIM3-5.0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4050AIM3-5.0?
LM4050AIM3-5.0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4050AIM3-5.0 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 LM4050AIM3-5.0?
For technical support, including LM4050AIM3-5.0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4050AIM3-5.0 requirements.
6.How does Aetrix verify that LM4050AIM3-5.0 is sourced from the original manufacturer or authorized distributors?
All LM4050AIM3-5.0 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 LM4050AIM3-5.0 meets industry standards.
7.What is the process for return or replacement of LM4050AIM3-5.0?
All LM4050AIM3-5.0 units undergo pre-shipment inspection (PSI). If there is an issue with LM4050AIM3-5.0, 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 LM4050AIM3-5.0 part is unused and in its original packaging.
Return procedure for LM4050AIM3-5.0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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