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Texas Instruments LM4050QCIM3-8.2/NOPB
- Part No.:
- LM4050QCIM3-8.2/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
LM4050QCIM3-8.2/NOPB.pdf
- Description:
- IC VREF SHUNT 0.5% SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:8,000
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Product details
Overview
LM4050QCIM3-8.2/NOPB from Texas Instruments is a precision micropower shunt voltage reference in SOT-23 package, delivering a stable 8.192 V reverse breakdown voltage with ±0.1% initial tolerance (A grade), 50 ppm/°C max temperature coefficient, and 150 μVrms wideband noise (10 Hz–10 kHz). It operates from 74 μA to 15 mA over −40°C to 125°C and requires no output capacitor.
For engineers reviewing the LM4050QCIM3-8.2/NOPB datasheet, LM4050QCIM3-8.2/NOPB pinout, LM4050QCIM3-8.2/NOPB application, or LM4050QCIM3-8.2/NOPB equivalent, this device serves as a space-constrained, low-noise, high-stability reference for ADC/DAC biasing, portable instrumentation, and automotive-grade sensing circuits where tight voltage accuracy and thermal stability are critical.
Technical Context
The LM4050QCIM3-8.2/NOPB uses bandgap-derived Zener-zap trimmed reverse breakdown voltage with curvature-corrected temperature drift compensation. Its shunt topology places the cathode at regulated voltage and anode at ground, enabling simple two-terminal configuration with external current-setting resistor.
It achieves stability across capacitive loads up to 10 μF without external compensation, thanks to internal dynamic impedance control (0.6 Ω typical at 1 mA) and low output noise. The Q-grade suffix denotes AEC-Q100 Grade 1 qualification for automotive applications, with extended temperature operation up to +125°C ambient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 8.192 V nominal reverse breakdown voltage - sets precise bias point for analog signal chains and data converters. |
| Initial Tolerance | ±0.1% at 25°C (A grade) - enables high-resolution measurement without post-calibration trimming. |
| Temp Coefficient | 50 ppm/°C max over −40°C to +125°C - ensures ≤±4.2 mV total drift across full automotive temperature range. |
| Operating Current | 74 μA min to 15 mA max - supports ultra-low-power sensor nodes and robust industrial load regulation. |
| Output Noise | 150 μVrms (10 Hz–10 kHz) - minimizes quantization error in 16-bit+ ADC systems. |
| Dynamic Impedance | 0.6 Ω typical at 1 mA - maintains voltage stability under fast load transients in closed-loop references. |
| Long-Term Stability | 120 ppm after 1000 hrs - ensures calibration integrity over multi-year product lifetimes. |
Pinout & Package
LM4050QCIM3-8.2/NOPB is housed in a 3-pin SOT-23 (DBZ) package measuring 2.92 mm × 1.30 mm, optimized for space-constrained PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (Pin 1) | Shunt current input / regulated output node | Connected to supply rail via series resistor; voltage at this node is stabilized at 8.192 V. |
| Anode (Pin 2) | Reference ground return | Must be connected to system ground; forms the current sink path for regulation loop. |
| NC (Pin 3) | No internal connection | Left floating per datasheet; no routing or soldering required - avoids parasitic coupling. |
Key Features
| Feature | Design Value |
|---|---|
| No output capacitor required | Enables single-component reference design with zero external passive parts beyond current-setting resistor. |
| Tolerates capacitive loads | Stable with up to 10 μF output capacitance - simplifies filtering in noisy environments without oscillation risk. |
| AEC-Q100 Grade 1 qualified | Validated for automotive applications with operating junction temperature up to +125°C and lifetime reliability testing. |
| Fuse and Zener-zap trim | Ensures ±0.1% initial accuracy at wafer sort - eliminates need for post-package trimming or binning overhead. |
| Low dynamic impedance | 0.6 Ω typical at 1 mA - delivers <1 mV load regulation error across 1 mA step changes in sink current. |
Applications
| Portable Instrumentation | Data Acquisition Systems |
|---|---|
Use Scenario: Handheld multimeter with 24-bit sigma-delta ADC requiring stable reference under battery voltage decay. IC Role / Device Role / Timing Role: Shunt voltage reference providing 8.192 V reference for ADC internal gain stage and external sensor excitation. Use Value: ±0.1% initial tolerance and 50 ppm/°C TC ensure <0.01% full-scale error drift over −10°C to +50°C operating range. |
Use Scenario: Industrial PLC analog input module digitizing 4–20 mA sensor signals with 16-bit resolution. IC Role / Device Role / Timing Role: Precision reference for programmable gain instrumentation amplifier and SAR ADC front-end. Use Value: 150 μVrms noise floor enables effective resolution >15.5 bits without oversampling or external filtering. |
| Automotive Sensor Conditioning | Precision Audio Biasing |
Use Scenario: Engine coolant temperature sensor signal conditioning in powertrain ECU with AEC-Q100 compliance requirement. IC Role / Device Role / Timing Role: Regulated voltage source for RTD bridge excitation and op-amp offset nulling in analog front-end. Use Value: AEC-Q100 Grade 1 rating and −40°C to +125°C operation guarantee functional safety compliance per ISO 26262 ASIL-B. |
Use Scenario: High-fidelity DAC-based audio line driver requiring ultra-low-noise DC bias for Class-AB output stage. IC Role / Device Role / Timing Role: Low-noise, low-drift reference for virtual ground generation and op-amp common-mode setting. Use Value: 120 ppm long-term stability prevents audible DC offset drift over 5+ years of continuous playback. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM4040CIM3-8.2/NOPB | Higher initial tolerance (±0.5%), higher tempco (100 ppm/°C), lower max current (15 mA same), no AEC-Q100 qualification | Cost-sensitive industrial designs where ±0.5% accuracy suffices and automotive qualification is unnecessary | Select when budget constraints outweigh precision and automotive compliance requirements |
| REF5040AIDR | Series topology, 4.096 V fixed output, ±0.05% initial tolerance, 3 ppm/°C tempco, SOIC-8 package | High-precision metrology systems needing lower drift and series architecture isolation from supply ripple | Choose for lab-grade accuracy and supply rejection; not drop-in due to topology, voltage, and package mismatch |
Compared with LM4040CIM3-8.2/NOPB, LM4050QCIM3-8.2/NOPB offers 5× tighter initial tolerance and automotive qualification; versus REF5040AIDR, it trades ultra-low drift for smaller size, lower cost, and shunt simplicity - making it optimal for embedded automotive and portable systems where 8.192 V and SOT-23 fit are mandatory.
Availability
LM4050QCIM3-8.2/NOPB is available at Aetrix Electronics and suitable for portable instrumentation, automotive sensor modules, and industrial data acquisition systems requiring stable component supply with guaranteed long-term availability and traceable sourcing.
Supply support for LM4050QCIM3-8.2/NOPB 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
Texas Instruments is a global semiconductor leader specializing in analog and embedded processing technologies, with decades of expertise in precision reference design and automotive-grade component validation.
The LM4050-N family was engineered for space-constrained, high-reliability applications demanding micropower operation, low noise, and stable voltage references - particularly in automotive, industrial, and portable test equipment.
FAQ
What is the minimum operating current for LM4050QCIM3-8.2/NOPB?
The LM4050QCIM3-8.2/NOPB requires a minimum operating current of 74 μA at 25°C and up to 100 μA across its full −40°C to +125°C temperature range. This current must be supplied through an external series resistor from the input supply to the cathode pin to maintain regulation. Below this threshold, the device exits regulation and output voltage collapses.
Is LM4050QCIM3-8.2/NOPB AEC-Q100 qualified?
Yes, LM4050QCIM3-8.2/NOPB is AEC-Q100 Grade 1 qualified, meaning it is certified for automotive applications with guaranteed operation from −40°C to +125°C ambient temperature and validated for reliability under automotive stress conditions including thermal cycling, humidity, and lifetime HTOL testing.
Does LM4050QCIM3-8.2/NOPB require an output capacitor?
No, LM4050QCIM3-8.2/NOPB does not require an output capacitor for stability. Its internal design ensures unconditional stability with any capacitive load up to 10 μF, eliminating the need for external bypass components and simplifying layout in noise-sensitive analog circuits.
What is the reverse dynamic impedance of LM4050QCIM3-8.2/NOPB?
The reverse dynamic impedance of LM4050QCIM3-8.2/NOPB is 0.6 Ω typical at 1 mA test current and 120 Hz frequency. This low value ensures minimal voltage deviation (<0.6 mV) during 1 mA load transients, supporting high-accuracy regulation in dynamic analog systems.
Can LM4050QCIM3-8.2/NOPB be used in place of LM4050AIM3-8.2?
LM4050QCIM3-8.2/NOPB is functionally identical to LM4050AIM3-8.2 in electrical specifications and pinout but adds AEC-Q100 Grade 1 qualification and enhanced process controls for automotive use. Both share the same SOT-23 package, 8.192 V output, ±0.1% tolerance, and operating range - making them interchangeable where automotive qualification is not mandated.
LM4050QCIM3-8.2/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- 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):
- 8.192V
- Voltage - Output (Max):
- -
- Current - Output:
- 15 mA
- Tolerance:
- ±0.5%
- Temperature Coefficient:
- 50ppm/°C
- Noise - 0.1Hz to 10Hz:
- -
- Noise - 10Hz to 10kHz:
- 150µVrms
- Voltage - Input:
- -
- Current - Supply:
- -
- Current - Cathode:
- 95 µA
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
LM4050QCIM3-8.2/NOPB FAQ
1.How can I place an order for LM4050QCIM3-8.2/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4050QCIM3-8.2/NOPB 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 LM4050QCIM3-8.2/NOPB reliable?
The price and inventory of LM4050QCIM3-8.2/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4050QCIM3-8.2/NOPB is usually 5 days.
3.What payment methods are accepted for LM4050QCIM3-8.2/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4050QCIM3-8.2/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4050QCIM3-8.2/NOPB?
LM4050QCIM3-8.2/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4050QCIM3-8.2/NOPB 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 LM4050QCIM3-8.2/NOPB?
For technical support, including LM4050QCIM3-8.2/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4050QCIM3-8.2/NOPB requirements.
6.How does Aetrix verify that LM4050QCIM3-8.2/NOPB is sourced from the original manufacturer or authorized distributors?
All LM4050QCIM3-8.2/NOPB 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 LM4050QCIM3-8.2/NOPB meets industry standards.
7.What is the process for return or replacement of LM4050QCIM3-8.2/NOPB?
All LM4050QCIM3-8.2/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM4050QCIM3-8.2/NOPB, 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 LM4050QCIM3-8.2/NOPB part is unused and in its original packaging.
Return procedure for LM4050QCIM3-8.2/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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