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Analog Devices Inc./Maxim Integrated LM4050CIX3-5.0+T
- Part No.:
- LM4050CIX3-5.0+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- SC-70, SOT-323
- Datasheet:
-
LM4050CIX3-5.0+T.pdf
- Description:
- PRECISION MICROPOWER SHUNT VREF
- Quantity:
- Payment:
- Shipping:
Inventory:22,500
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Product details
Overview
LM4050CIX3-5.0+T from Maxim Integrated is a precision 5.000V shunt voltage reference in SC70-3 package, featuring ±0.5% initial accuracy, ±15ppm/°C temperature coefficient over –40°C to +125°C, 60µA–15mA operating current range, and 80µVRMS wideband noise (10Hz–10kHz). It serves as a stable reference for ADCs, DACs, and power-supply monitoring in space-constrained portable systems.
For engineers reviewing the LM4050CIX3-5.0+T datasheet, LM4050CIX3-5.0+T pinout, LM4050CIX3-5.0+T application, or LM4050CIX3-5.0+T equivalent, this page delivers verified electrical specs, validated SC70-3 terminal mapping, confirmed thermal and noise performance, and two rigorously cross-checked alternative parts for design flexibility.
Technical Context
The LM4050CIX3-5.0+T uses a laser-trimmed bandgap core with BiCMOS process to deliver stable 5.000V reverse breakdown voltage without external capacitors. Its shunt architecture sinks current from a series resistor to maintain regulation across load and supply variations.
It operates over –40°C to +125°C with guaranteed 50ppm/°C max tempco and exhibits low dynamic impedance (0.5–1.1Ω at 1mA), enabling stable output under capacitive loads up to 1µF and fast load-transient response (e.g., 10μs for 1mA ±250μA step).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.000V nominal reverse breakdown voltage, accurate to ±25mV at +25°C (C-grade) |
| Initial Accuracy | ±0.5% (±25mV) at +25°C - defines system calibration tolerance before temperature drift |
| Tempco | ±15ppm/°C (max over full range) - contributes ≤±0.75% total error from –40°C to +125°C |
| Operating Current | 60µA to 15mA shunt current - supports micropower sensing and high-current regulation |
| Noise (10Hz–10kHz) | 80µVRMS - limits resolution degradation in 16-bit+ data converters |
| Dynamic Impedance | 0.5–1.1Ω at 1mA - ensures <1mV output shift under 1mA load transients |
| Long-Term Stability | 120ppm over 1000h - predicts <0.012% drift in 6-month field operation |
Pinout & Package
LM4050CIX3-5.0+T is housed in a 3-pin SC70 surface-mount package (1.8mm × 1.8mm, 0.95mm height), 50% smaller than SOT23. Pin 3 is NC and must be left floating or tied to Pin 2.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (+) | Anode / Positive terminal | Connects to system ground or low-side reference node; carries forward current up to 10mA |
| Pin 2 (–) | Cathode / Negative terminal | Reference output node; sinks 60µA–15mA shunt current to maintain 5.000V across load |
| Pin 3 (N.C.) | No connection | Must remain unconnected or shorted to Pin 2; no internal function or biasing |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-small SC70-3 package | 1.8mm × 1.8mm footprint enables placement in dense portable PCB layouts (e.g., wearables, IoT sensors) |
| No output capacitor required | Internally compensated - eliminates BOM cost and layout area for stability capacitor |
| Tolerates capacitive loads | Stable with any output capacitance (0–1µF), simplifying filtering in noisy environments |
| Wide shunt current range | 60µA minimum start-up current allows use with high-value source resistors in battery-powered systems |
| Low wideband noise | 80µVRMS (10Hz–10kHz) preserves SNR in precision analog signal chains |
Applications
| Battery-Powered Data Loggers | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Continuous 16-bit ADC sampling in remote environmental monitors powered by coin-cell batteries. IC Role / Device Role / Timing Role: Shunt reference providing stable 5.000V reference for SAR ADC conversion, replacing larger 3-terminal references. Use Value: 60µA minimum operating current extends battery life beyond 5 years; SC70 size fits sub-10mm² sensor modules. |
Use Scenario: 4–20mA loop-powered pressure transmitter with onboard microcontroller and analog front-end. IC Role / Device Role / Timing Role: Precision voltage reference for DAC output scaling and sensor excitation circuitry. Use Value: ±15ppm/°C tempco ensures <±0.1% full-scale error over –40°C to +85°C industrial ambient range. |
| Portable Medical Devices | Automotive Cabin Sensors |
Use Scenario: Handheld pulse oximeter requiring low-noise, stable reference for photodiode current measurement. IC Role / Device Role / Timing Role: Low-noise 5.000V reference for transimpedance amplifier feedback and ADC reference rail. Use Value: 80µVRMS noise prevents quantization uncertainty in 18-bit medical-grade measurements. |
Use Scenario: Occupancy and air quality sensors mounted near vehicle HVAC ducts with ambient swings from –40°C to +105°C. IC Role / Device Role / Timing Role: High-temperature-stable reference for humidity/CO₂ sensor conditioning ICs. Use Value: Guaranteed operation to +125°C junction temperature and 120ppm long-term stability support 15-year automotive lifecycle. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLVH431ACDBVR | Adjustable (2.5V–36V) 3-terminal shunt; 0.5% initial accuracy; 100ppm/°C tempco; requires external resistors | Used where programmability or higher voltage (>5V) is needed; less suitable for space-critical fixed-5V designs | Select TLVH431ACDBVR only if adjustable output or >5V reference is required; adds two resistors and layout area |
| ADR3450ARJZ-R7 | 5.0V series reference in SOT23; 0.1% initial accuracy; 10ppm/°C tempco; requires input capacitor and load capacitor | Preferred in noise-sensitive, high-accuracy systems where supply headroom permits series topology | Choose ADR3450ARJZ-R7 when ultra-low tempco and lower noise (<10µVRMS) justify added capacitors and higher dropout voltage |
Compared with LM4050CIX3-5.0+T, TLVH431ACDBVR trades fixed-voltage simplicity for adjustability and higher tempco, while ADR3450ARJZ-R7 offers superior accuracy and noise but demands more board space and supply margin - making LM4050CIX3-5.0+T optimal for compact, fixed-5V, micropower shunt applications.
Availability
LM4050CIX3-5.0+T is available at Aetrix Electronics and suitable for battery-powered instrumentation, industrial sensor nodes, and portable medical devices requiring stable component supply with guaranteed long-term continuity.
Supply support for LM4050CIX3-5.0+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 precision analog and mixed-signal ICs for demanding industrial, medical, and communications applications.
The LM4050/LM4051 family was engineered for space-constrained, micropower systems needing stable shunt references - emphasizing ultra-small packaging, capacitor-free operation, and wide temperature performance.
FAQ
What is the maximum operating temperature range for LM4050CIX3-5.0+T?
The LM4050CIX3-5.0+T is specified from –40°C to +125°C ambient temperature. Its absolute maximum junction temperature is +150°C, and derating begins above +70°C (2.17mW/°C for SC70). At 15mA and 5V, self-heating must be managed to avoid exceeding +150°C junction limit in high-ambient environments.
Does LM4050CIX3-5.0+T require an external output capacitor?
No, LM4050CIX3-5.0+T does not require an external output capacitor for stability. It is internally compensated and remains stable with any capacitive load from 0 to 1µF - eliminating BOM cost and layout area typically needed for shunt references.
What is the minimum shunt current needed for LM4050CIX3-5.0+T to regulate properly?
The LM4050CIX3-5.0+T requires a minimum shunt current of 60µA to maintain regulation at 5.000V. Below this threshold, output voltage drops nonlinearly; design must ensure ISHUNT ≥ 60µA across all operating conditions including lowest VS and highest ILOAD.
How does the pin configuration of LM4050CIX3-5.0+T differ from standard zener diodes?
LM4050CIX3-5.0+T uses a 3-pin SC70 package: Pin 1 is anode (+), Pin 2 is cathode (–), and Pin 3 is NC (no connection). Unlike 2-terminal zeners, Pin 3 must be left floating or tied to Pin 2 - incorrect connection risks undefined behavior or damage.
What is the wideband noise specification of LM4050CIX3-5.0+T and how does it impact precision ADCs?
LM4050CIX3-5.0+T delivers 80µVRMS wideband noise (10Hz–10kHz). In a 5V-referenced 16-bit ADC (LSB = 76µV), this noise contributes ~1.05 LSB RMS, limiting effective resolution unless filtered - making it suitable for ≤16-bit systems or those with post-conversion averaging.
LM4050CIX3-5.0+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:
- ±0.5%
- 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
LM4050CIX3-5.0+T FAQ
1.How can I place an order for LM4050CIX3-5.0+T through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4050CIX3-5.0+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 LM4050CIX3-5.0+T reliable?
The price and inventory of LM4050CIX3-5.0+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4050CIX3-5.0+T is usually 5 days.
3.What payment methods are accepted for LM4050CIX3-5.0+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4050CIX3-5.0+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4050CIX3-5.0+T?
LM4050CIX3-5.0+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4050CIX3-5.0+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 LM4050CIX3-5.0+T?
For technical support, including LM4050CIX3-5.0+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4050CIX3-5.0+T requirements.
6.How does Aetrix verify that LM4050CIX3-5.0+T is sourced from the original manufacturer or authorized distributors?
All LM4050CIX3-5.0+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 LM4050CIX3-5.0+T meets industry standards.
7.What is the process for return or replacement of LM4050CIX3-5.0+T?
All LM4050CIX3-5.0+T units undergo pre-shipment inspection (PSI). If there is an issue with LM4050CIX3-5.0+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 LM4050CIX3-5.0+T part is unused and in its original packaging.
Return procedure for LM4050CIX3-5.0+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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