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Analog Devices Inc./Maxim Integrated LM4050BIX3-2.5+T
- Part No.:
- LM4050BIX3-2.5+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- SC-70, SOT-323
- Datasheet:
-
LM4050BIX3-2.5+T.pdf
- Description:
- LM4050 50PPM PER DEGREE CELSIUS
- Quantity:
- Payment:
- Shipping:
Inventory:22,500
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Product details
Overview
LM4050BIX3-2.5+T from Maxim Integrated is a precision 2.500V shunt voltage reference in SC70-3 package, featuring ±5.0mV initial accuracy (0.2%), ±15ppm/°C temperature coefficient over –40°C to +125°C, 60µA–15mA operating current range, and 35µVRMS wideband noise (10Hz–10kHz). It serves as a stable reference for ADCs, DACs, and power-supply monitoring in portable battery-powered systems.
For engineers reviewing the LM4050BIX3-2.5+T datasheet, LM4050BIX3-2.5+T pinout, LM4050BIX3-2.5+T application, or LM4050BIX3-2.5+T equivalent, key selection criteria include guaranteed initial tolerance at 25°C and full-temperature-range stability, ultra-low quiescent current capability, no external capacitor requirement, and SC70 footprint compatibility with space-constrained PCB layouts.
Technical Context
The LM4050BIX3-2.5+T uses a laser-trimmed bandgap core to deliver fixed 2.500V reverse breakdown voltage with minimal drift. Its two-terminal shunt architecture sinks current through an external series resistor to maintain regulation across load and supply variations.
It operates without output capacitance and remains stable under any capacitive load condition. The device's dynamic impedance is ≤0.8Ω at 1mA, enabling fast transient response in precision analog signal chains where reference stability directly impacts measurement integrity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.500V ±5.0mV at +25°C - ensures accurate 12-bit+ ADC/DAC reference without calibration. |
| Initial Accuracy | ±0.2% (Grade B) - supports high-precision sensor front-ends and industrial control loops. |
| Tempco | ±15ppm/°C max - guarantees <±0.3mV drift over full –40°C to +125°C range. |
| Operating Current | 60µA to 15mA - enables micropower operation in sleep modes and robust regulation at full load. |
| Output Noise | 35µVRMS (10Hz–10kHz) - minimizes quantization error in high-resolution data acquisition. |
| Dynamic Impedance | ≤0.8Ω at 1mA - maintains voltage stability during rapid load transients. |
| Long-Term Stability | 120ppm over 1000h - reduces calibration frequency in field-deployed instrumentation. |
Pinout & Package
LM4050BIX3-2.5+T is housed in a 3-pin SC70 surface-mount package (1.8mm × 1.8mm), 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 | Connected to system ground or low-impedance return path; defines reference node polarity. |
| Pin 2 (−) | Cathode / Negative Terminal | Connected to regulated output node; sinks shunt current to maintain 2.500V across terminals. |
| Pin 3 (N.C.) | No Connection | Must remain unconnected or shorted to Pin 2; not internally bonded - avoids parasitic coupling. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-small SC70-3 package | 1.8mm × 1.8mm footprint - saves >50% board area vs. SOT23, critical for wearables and compact IoT nodes. |
| No output capacitor required | Internally compensated - eliminates BOM cost, layout risk, and ESR-related instability in battery-powered designs. |
| Tolerates capacitive loads | Stable with any COUT value - simplifies filtering for noise-sensitive SAR ADC references without phase-margin analysis. |
| Wide shunt-current range | 60µA–15mA operation - supports both ultra-low-power sensor wake-up states and full-load regulation in active mode. |
| Laser-trimmed accuracy | 0.2% initial tolerance - reduces need for system-level trimming, lowering production test time and cost. |
Applications
| Portable Medical Sensors | Industrial Data Loggers |
|---|---|
Use Scenario: Battery-powered glucose meter with 16-bit sigma-delta ADC measuring electrochemical current. IC Role / Device Role / Timing Role: Provides stable 2.500V reference for ADC conversion, directly determining measurement resolution and repeatability. Use Value: ±5mV initial error and ±15ppm/°C tempco ensure <±0.01% full-scale error across clinical operating temperatures (0°C–40°C). | Use Scenario: Ruggedized environmental monitor logging temperature, humidity, and gas concentration over years. IC Role / Device Role / Timing Role: Supplies precision reference to multiple 24-bit delta-sigma ADCs interfacing RTDs and electrochemical sensors. Use Value: 120ppm long-term stability minimizes recalibration intervals; SC70 package withstands thermal cycling in uncontrolled enclosures. |
| Wireless Sensor Nodes | Automotive Body Control Modules |
Use Scenario: Zigbee-enabled soil moisture sensor operating on coin-cell battery for >5 years. IC Role / Device Role / Timing Role: Enables ultra-low-quiescent-current reference for ADC and LDO feedback, extending battery life. Use Value: 60µA minimum operating current allows continuous sensing at sub-10µA system average current, meeting energy budget targets. | Use Scenario: Cabin air quality module monitoring CO₂ and VOCs in automotive HVAC systems. IC Role / Device Role / Timing Role: Delivers stable reference to analog front-end conditioning circuits operating across –40°C to +105°C ambient. Use Value: Guaranteed performance over –40°C to +125°C junction temperature ensures reliability in engine-bay-proximate mounting locations. |
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 min), 0.5% initial accuracy, 90ppm/°C tempco, SOT23-3 | Requires two external resistors for 2.5V setting; higher tempco increases drift in wide-temp environments | Choose when adjustable output or cost sensitivity outweighs precision and thermal stability requirements. |
| REF3025AIDBZR | 2.5V fixed, 0.2% initial accuracy, 50ppm/°C tempco, SOT23-3, 50µA–25mA | Series topology - requires minimum load current; higher quiescent current than LM4050BIX3-2.5+T in idle state | Prefer for low-noise, low-drift applications where series topology simplifies biasing but SC70 size is less critical. |
Compared with TLVH431AIDBZR and REF3025AIDBZR, the LM4050BIX3-2.5+T delivers superior thermal stability (±15ppm/°C vs. 90ppm/°C or 50ppm/°C), smallest footprint (SC70 vs. SOT23), and true zero-load capability - making it optimal for ultra-compact, battery-critical, and high-accuracy analog systems.
Availability
LM4050BIX3-2.5+T is available at Aetrix Electronics and suitable for portable medical sensors, industrial data loggers, wireless sensor nodes, and automotive body control modules requiring stable component supply across extended product lifecycles.
Supply support for LM4050BIX3-2.5+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, automotive, and communications applications.
The LM4050 series belongs to Maxim's precision voltage reference product line, engineered specifically for space-constrained, battery-operated systems needing high initial accuracy, low temperature drift, and micropower operation without external compensation.
FAQ
What is the guaranteed initial accuracy of the LM4050BIX3-2.5+T at +25°C?
The LM4050BIX3-2.5+T has a guaranteed initial accuracy of ±0.2% (±5.0mV) at +25°C, corresponding to Grade B specification per the datasheet's Electrical Characteristics table for 2.500V devices. This tolerance is laser-trimmed and tested during production, ensuring consistent performance without post-manufacture calibration.
Does the LM4050BIX3-2.5+T require an external output capacitor for stability?
No, the LM4050BIX3-2.5+T does not require an external output capacitor. Its internal design ensures stability with any capacitive load, including zero capacitance. This eliminates BOM components, layout constraints, and potential instability from capacitor ESR or aging - a key advantage in low-power and miniaturized designs.
What is the operating temperature range for the LM4050BIX3-2.5+T?
The LM4050BIX3-2.5+T is fully specified and guaranteed over the industrial temperature range of –40°C to +125°C. All electrical parameters - including output voltage, tempco, and dynamic impedance - are characterized across this range, making it suitable for under-hood automotive, outdoor industrial, and extended-environment applications.
Can Pin 3 of the LM4050BIX3-2.5+T be left unconnected?
Yes, Pin 3 (N.C.) of the LM4050BIX3-2.5+T must be left floating or connected to Pin 2 (cathode). It is not internally bonded and serves no electrical function. Leaving it unconnected is acceptable; tying it to Pin 2 avoids potential floating-node noise coupling in high-EMI environments.
How does the LM4050BIX3-2.5+T compare to the LM4050AIX3-2.5+T in terms of accuracy?
The LM4050BIX3-2.5+T offers ±0.2% initial accuracy (±5.0mV), while the LM4050AIX3-2.5+T provides tighter ±0.1% (±2.5mV). Both share identical tempco (±15ppm/°C), noise (35µVRMS), and package (SC70-3). Choose LM4050AIX3-2.5+T only if sub-2.5mV reference error is mandatory; otherwise, LM4050BIX3-2.5+T delivers optimal cost-performance balance for most precision applications.
LM4050BIX3-2.5+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):
- 2.5V
- Voltage - Output (Max):
- -
- Current - Output:
- 15 mA
- Tolerance:
- ±0.2%
- Temperature Coefficient:
- 50ppm/°C
- Noise - 0.1Hz to 10Hz:
- -
- Noise - 10Hz to 10kHz:
- 35µVrms
- Voltage - Input:
- -
- Current - Supply:
- -
- Current - Cathode:
- 65 µA
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-3
LM4050BIX3-2.5+T FAQ
1.How can I place an order for LM4050BIX3-2.5+T through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4050BIX3-2.5+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 LM4050BIX3-2.5+T reliable?
The price and inventory of LM4050BIX3-2.5+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4050BIX3-2.5+T is usually 5 days.
3.What payment methods are accepted for LM4050BIX3-2.5+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4050BIX3-2.5+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4050BIX3-2.5+T?
LM4050BIX3-2.5+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4050BIX3-2.5+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 LM4050BIX3-2.5+T?
For technical support, including LM4050BIX3-2.5+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4050BIX3-2.5+T requirements.
6.How does Aetrix verify that LM4050BIX3-2.5+T is sourced from the original manufacturer or authorized distributors?
All LM4050BIX3-2.5+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 LM4050BIX3-2.5+T meets industry standards.
7.What is the process for return or replacement of LM4050BIX3-2.5+T?
All LM4050BIX3-2.5+T units undergo pre-shipment inspection (PSI). If there is an issue with LM4050BIX3-2.5+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 LM4050BIX3-2.5+T part is unused and in its original packaging.
Return procedure for LM4050BIX3-2.5+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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