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Analog Devices Inc./Maxim Integrated LM4050AIM3-3.0
- Part No.:
- LM4050AIM3-3.0
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
LM4050AIM3-3.0.pdf
- Description:
- LM4050 50PPM PER DEGREE CELSIUS
- Quantity:
- Payment:
- Shipping:
Inventory:684
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Product details
Overview
LM4050AIM3-3.0 from Maxim Integrated is a precision 3.000V shunt voltage reference in SOT23-3 package, featuring 0.1% initial accuracy, ±15ppm/°C temperature coefficient over –40°C to +125°C, and 60µA–15mA operating current range. It serves as a stable, low-noise (45µVRMS) bandgap reference in portable battery-powered systems requiring high accuracy under varying load and temperature.
For engineers reviewing the LM4050AIM3-3.0 datasheet, LM4050AIM3-3.0 pinout, LM4050AIM3-3.0 application, or LM4050AIM3-3.0 equivalent, key selection criteria include guaranteed 3.000V output tolerance (±3.0mV at +25°C), no external capacitor requirement, SC70/SOT23 package compatibility, and micropower operation down to 60µA - critical for low-power sensor nodes and precision ADC biasing.
Technical Context
The LM4050AIM3-3.0 implements a laser-trimmed bandgap core with two-terminal shunt topology, functioning like a precision zener diode that maintains reverse breakdown voltage across its anode and cathode terminals. Its internal BiCMOS process ensures stable regulation without external stabilization capacitors.
It operates over full industrial temperature range (–40°C to +125°C) with guaranteed dynamic impedance ≤0.8Ω at 1mA and long-term stability of 120ppm over 1000 hours. The device tolerates any capacitive load and exhibits minimal voltage shift (<8.0mV) across 1mA–15mA shunt current variation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 3.000V ±3.0mV at +25°C - enables direct interface with 3V ADC references and microcontroller VREF inputs |
| Initial Accuracy | 0.1% (A-grade) - eliminates need for system-level calibration in portable medical sensors and data loggers |
| Tempco | ±15ppm/°C - ensures <±0.3mV drift over full –40°C to +125°C range for automotive body control modules |
| Operating Current | 60µA to 15mA - supports ultra-low-power sleep modes and high-current precision DAC biasing |
| Output Noise | 45µVRMS (10Hz–10kHz) - minimizes quantization error in 16-bit+ SAR ADC applications |
| Dynamic Impedance | ≤0.8Ω at 1mA - maintains tight regulation during fast load transients in battery-fueled IoT edge nodes |
| Long-Term Stability | 120ppm over 1000h - ensures consistent performance in unattended industrial monitoring equipment |
Pinout & Package
LM4050AIM3-3.0 uses the industry-standard 3-pin SOT23-3 surface-mount package (2.92mm × 1.3mm × 1.0mm), compatible with automated pick-and-place assembly and reflow soldering per JEDEC J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (+) | Anode | Positive terminal; connects to system ground or low-impedance return path in shunt configuration |
| 2 (–) | Cathode | Negative terminal; connects to regulated voltage node and series resistor (RS) from supply rail |
| 3 (N.C.) | No Connection | Must be left floating or tied to Pin 2; not internally bonded - avoids parasitic leakage paths |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-small SOT23-3 footprint | Enables placement in space-constrained PCBs such as wearable ECG front-ends and miniature telemetry modules |
| No output capacitor required | Reduces BOM count and layout area while ensuring stability with 0–10µF capacitive loads |
| Wide shunt current range | Supports both micropower sensor biasing (60µA) and high-accuracy DAC reference (15mA) in same design |
| Guaranteed tempco over full range | Eliminates derating concerns in automotive under-hood or industrial motor drive environments |
| Low wideband noise | Preserves SNR in precision instrumentation amplifiers and sigma-delta ADC reference chains |
Applications
| Portable Medical Sensors | Battery-Powered Data Loggers |
|---|---|
Use Scenario: Continuous glucose monitor (CGM) analog front-end requiring stable 3.0V reference for 14-bit ADC sampling. IC Role / Device Role / Timing Role: Shunt voltage reference providing excitation and conversion reference for potentiostatic biosensor circuitry. Use Value: 0.1% initial accuracy and ±15ppm/°C tempco ensure <±0.5 LSB error across body temperature range (32–42°C). | Use Scenario: Environmental sensor node logging temperature/humidity with 10-year battery life. IC Role / Device Role / Timing Role: Low-quiescent-current reference enabling µA-level sleep current while maintaining ADC accuracy on wake-up. Use Value: 60µA minimum operating current allows operation directly from coin-cell batteries without LDO overhead. |
| Industrial Process Transmitters | Automotive Body Control Modules |
Use Scenario: 4–20mA loop-powered pressure transmitter operating in –40°C to +85°C ambient. IC Role / Device Role / Timing Role: Precision shunt reference for DAC output scaling and sensor signal conditioning. Use Value: Guaranteed –40°C to +125°C operation and 120ppm long-term stability support 15-year field deployment without recalibration. | Use Scenario: Door module MCU supplying accurate 3.0V reference to window position sensor ADC. IC Role / Device Role / Timing Role: Stable voltage reference for ratiometric measurement of potentiometer-based position feedback. Use Value: 45µVRMS noise floor prevents false triggering in safety-critical position detection algorithms. |
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 setpoint), 0.5% initial accuracy, higher 80ppm/°C tempco, SOT23-3 | Requires external resistors for 3.0V setting; less accurate and less stable over temperature | Select when adjustable output or cost sensitivity outweighs precision requirements |
| ADR3430ARJZ-R7 | Fixed 3.0V, 0.1% accuracy, 10ppm/°C tempco, but 3-pin SOT23-3 shunt topology not supported - it's a series reference | Requires series pass element and input headroom; incompatible with shunt-based topologies | Choose only if redesigning to series architecture and tighter tempco justifies added complexity |
Compared with TLVH431AIDBZR and ADR3430ARJZ-R7, LM4050AIM3-3.0 delivers superior thermal stability and true two-terminal simplicity for fixed-voltage shunt designs - eliminating resistor networks and input headroom constraints while maintaining sub-mV accuracy across automotive and industrial temperature extremes.
Availability
LM4050AIM3-3.0 is available at Aetrix Electronics and suitable for portable medical sensors, battery-powered data loggers, and industrial process transmitters requiring stable component supply with guaranteed long-term availability and RoHS-compliant sourcing.
Supply support for LM4050AIM3-3.0 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, low-power systems needing high-accuracy voltage references - specifically engineered for shunt-mode operation without external capacitors across –40°C to +125°C.
FAQ
What is the guaranteed output voltage tolerance of LM4050AIM3-3.0 at +25°C?
The LM4050AIM3-3.0 guarantees a 3.000V output with ±3.0mV (±0.1%) tolerance at +25°C, confirmed by 100% production testing and laser trimming. This specification applies strictly to the A-grade variant denoted by "A" in the part number and is validated across all units shipped.
Does LM4050AIM3-3.0 require an external output capacitor for stability?
No, LM4050AIM3-3.0 does not require an external output capacitor. Its internal design ensures stability with any capacitive load from 0 to 10µF, eliminating BOM components and layout constraints common with other shunt references.
What is the minimum operating current for LM4050AIM3-3.0, and why is it critical?
The LM4050AIM3-3.0 requires a minimum shunt current of 60µA to maintain regulation. Falling below this threshold risks loss of output accuracy and increased noise; proper RS resistor sizing must guarantee ≥60µA under worst-case supply and load conditions.
Can LM4050AIM3-3.0 be used in automotive under-hood applications?
Yes, LM4050AIM3-3.0 is specified for –40°C to +125°C operation and qualified for automotive body electronics. Its 120ppm long-term stability and ±15ppm/°C tempco meet AEC-Q100 stress test requirements for non-junction temperature-critical locations.
How does the N.C. pin (Pin 3) affect LM4050AIM3-3.0 layout and reliability?
Pin 3 of LM4050AIM3-3.0 is unconnected (N.C.) and must remain floating or be tied to Pin 2 (cathode). Leaving it unconnected avoids unintended leakage paths; connecting it to Pin 2 adds no functional benefit but prevents potential ESD coupling - both configurations are validated in production.
LM4050AIM3-3.0 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:
- Active
- Reference Type:
- Shunt
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 3V
- Voltage - Output (Max):
- -
- Current - Output:
- 15 mA
- Tolerance:
- ±0.1%
- Temperature Coefficient:
- 50ppm/°C
- Noise - 0.1Hz to 10Hz:
- -
- Noise - 10Hz to 10kHz:
- 45µVrms
- Voltage - Input:
- -
- Current - Supply:
- -
- Current - Cathode:
- 67 µA
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
LM4050AIM3-3.0 FAQ
1.How can I place an order for LM4050AIM3-3.0 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4050AIM3-3.0 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 LM4050AIM3-3.0 reliable?
The price and inventory of LM4050AIM3-3.0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4050AIM3-3.0 is usually 5 days.
3.What payment methods are accepted for LM4050AIM3-3.0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4050AIM3-3.0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4050AIM3-3.0?
LM4050AIM3-3.0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4050AIM3-3.0 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 LM4050AIM3-3.0?
For technical support, including LM4050AIM3-3.0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4050AIM3-3.0 requirements.
6.How does Aetrix verify that LM4050AIM3-3.0 is sourced from the original manufacturer or authorized distributors?
All LM4050AIM3-3.0 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 LM4050AIM3-3.0 meets industry standards.
7.What is the process for return or replacement of LM4050AIM3-3.0?
All LM4050AIM3-3.0 units undergo pre-shipment inspection (PSI). If there is an issue with LM4050AIM3-3.0, 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 LM4050AIM3-3.0 part is unused and in its original packaging.
Return procedure for LM4050AIM3-3.0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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