My Inquiry
My Account
Texas Instruments LM4050BIM3X-8.2
- Part No.:
- LM4050BIM3X-8.2
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
LM4050BIM3X-8.2.pdf
- Description:
- IC VREF SHUNT 0.2% SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:4,454
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LM4050BIM3X-8.2 from Texas Instruments is a precision micropower shunt voltage reference with 8.192 V nominal reverse breakdown voltage, ±0.2% initial tolerance (B-grade), and 50 ppm/°C max temperature coefficient. It operates from 74 μA to 15 mA over −40°C to 125°C, requires no output capacitor, and delivers stable regulation for high-resolution ADCs and portable instrumentation.
For engineers reviewing the LM4050BIM3X-8.2 datasheet, LM4050BIM3X-8.2 pinout, LM4050BIM3X-8.2 application, or LM4050BIM3X-8.2 equivalent, key selection criteria include its SOT-23 package, 150 μVRMS wideband noise (10 Hz–10 kHz), 0.6 Ω dynamic impedance at 1 mA, thermal hysteresis of 2.3 mV, and compatibility with capacitive loads without external compensation.
Technical Context
The LM4050BIM3X-8.2 uses bandgap reference architecture with curvature-corrected Zener-zap trimming to achieve tight initial accuracy and low drift. Its shunt topology sinks current through the cathode to maintain precise 8.192 V across the anode-to-cathode terminals, enabling simple two-terminal biasing in series-regulated or feedback-sensing configurations.
Designed for space-constrained systems, it eliminates external stabilization components while tolerating unlimited capacitive loading-unlike many shunt references requiring minimum ESR or series resistance. The device's fuse-trimmed wafer-sort process ensures ±0.2% tolerance at 25°C and maintains stability across industrial and extended temperature ranges.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 8.192 V nominal reverse breakdown voltage, verified at 150 μA test current |
| Initial Tolerance | ±0.2% at 25°C (B-grade), enabling high-accuracy system calibration without post-manufacture trimming |
| Temp Coefficient | ≤50 ppm/°C over −40°C to 125°C, limiting full-range drift to ±0.425% of 8.192 V |
| Operating Current | 74 μA min to 15 mA max, supporting ultra-low-power sensor nodes and high-current DAC references |
| Noise (10 Hz–10 kHz) | 150 μVRMS, critical for 16-bit+ data acquisition systems where reference noise dominates SNR |
| Dynamic Impedance | 0.6 Ω at 1 mA, ensuring minimal load-induced voltage shift during transient current demand |
| Thermal Hysteresis | 2.3 mV after cycling −40°C ↔ 125°C, preserving repeatability in thermally cycled environments |
Pinout & Package
SOT-23 (DBZ) package: 3-pin surface-mount, 2.92 mm × 1.30 mm body size, JEDEC MO-178AC compliant. Pin 1 = Cathode (shunt current path), Pin 2 = Anode (ground/common return), Pin 3 = NC (no internal connection).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (Pin 1) | Shunt current input and voltage sensing node | Connects to regulated supply rail; sinks all operating current to maintain 8.192 V across anode–cathode |
| Anode (Pin 2) | Reference ground and current return path | Must be connected to system ground; forms the 0 V reference point for output voltage measurement |
| NC (Pin 3) | No internal connection | Left floating per datasheet; no PCB trace or component required-avoids unintended parasitic coupling |
Key Features
| Feature | Design Value |
|---|---|
| No output capacitor required | Enables direct integration into compact layouts without stability-compensation components or layout-sensitive RC networks |
| Tolerates capacitive loads | Stable with any value or ESR of output capacitance-eliminates need for series resistance or ferrite beads |
| Fixed 8.192 V breakdown | Matches binary-scaled reference needs for 13-bit systems (213 = 8192), simplifying ratio-metric ADC design |
| Low 150 μVRMS noise | Supports >16-bit effective resolution in precision data converters without external filtering |
| Wide 74 μA–15 mA operating range | Permits use in both battery-powered microamps and high-speed DAC buffer applications |
Applications
| Portable Instrumentation | Data Acquisition Systems |
|---|---|
Use Scenario: Handheld multimeter with 24-bit sigma-delta ADC and lithium coin-cell power. IC Role / Device Role / Timing Role: Shunt reference providing stable 8.192 V for ADC full-scale calibration and ratiometric sensor excitation. Use Value: Enables 0.005% measurement accuracy over −10°C to 50°C ambient, with no warm-up delay or capacitor-dependent settling. |
Use Scenario: Industrial PLC analog input module digitizing 4–20 mA loop signals. IC Role / Device Role / Timing Role: Precision reference for 16-bit SAR ADC front-end, referenced against isolated 4–20 mA transducer outputs. Use Value: Delivers <1 LSB INL error across temperature due to ≤50 ppm/°C drift and 2.3 mV thermal hysteresis. |
| Energy Management Units | Precision Audio Components |
Use Scenario: Smart meter SOC monitoring using shunt-based current sensing and voltage scaling. IC Role / Device Role / Timing Role: Reference for bidirectional current-sense amplifier gain-setting and battery voltage ADC scaling. Use Value: Maintains ±0.2% full-scale accuracy over 10-year field life (120 ppm long-term stability) and 150 μVRMS noise floor. |
Use Scenario: High-fidelity DAC output stage requiring ultra-low-noise, DC-stable bias for op-amp I/V conversion. IC Role / Device Role / Timing Role: Low-noise shunt reference supplying clean 8.192 V to precision op-amp feedback network. Use Value: Reduces DAC output THD+N by 8 dB versus standard Zener references, confirmed by 150 μVRMS noise spec. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM4040BIM3X-8.2 | Higher 100 μA min operating current; 100 μVRMS noise; same 8.192 V, ±0.2% tolerance | Less suitable for sub-100 μA battery systems; higher noise limits 18-bit ADC use | Select LM4040BIM3X-8.2 only if legacy design reuse or lower-cost sourcing outweighs micropower advantage |
| REF5082IDBVR | Series topology; 3.3 V input min; 8.2 V output; 3.8 μVPP noise; 3 ppm/°C drift | Requires input headroom; unsuitable for low-voltage or two-terminal configurations | Choose REF5082IDBVR when ultra-low drift and noise are mandatory and input supply ≥10 V is available |
Compared with LM4040BIM3X-8.2, LM4050BIM3X-8.2 enables 26% lower minimum current and 50% lower noise-critical for portable 16-bit DAQ. Versus REF5082IDBVR, it offers true two-terminal simplicity but trades 17× higher tempco and 40× higher noise for cost and layout efficiency.
Availability
LM4050BIM3X-8.2 is available at Aetrix Electronics and suitable for portable instrumentation, energy management units, data acquisition systems, and precision audio components requiring stable component supply across automotive, industrial, and medical OEM programs.
Supply support for LM4050BIM3X-8.2 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 over 50 years of precision reference design heritage.
The LM4050-N product line delivers micropower shunt voltage references optimized for space-constrained, battery-operated, and high-accuracy measurement systems-emphasizing zero-capacitor stability, wide current range, and robust thermal performance.
FAQ
What is the minimum operating current for LM4050BIM3X-8.2?
The LM4050BIM3X-8.2 requires a minimum operating current of 74 μA at 25°C, rising to 95 μA over the industrial temperature range (−40°C to 85°C) and 100 μA over the extended range (−40°C to 125°C). This low quiescent current enables use in always-on sensor nodes powered by coin cells or energy harvesters, where LM4050BIM3X-8.2 sustains regulation without compromising battery life.
Does LM4050BIM3X-8.2 require an output capacitor?
No, LM4050BIM3X-8.2 does not require an output capacitor for stability-it is explicitly designed to operate without one, unlike most shunt references. Its internal architecture tolerates unlimited capacitive loading, allowing direct connection to ADC reference inputs or op-amp feedback networks without added series resistance or ESR constraints. This behavior is validated across all operating conditions for LM4050BIM3X-8.2.
What is the thermal hysteresis specification for LM4050BIM3X-8.2?
The thermal hysteresis of LM4050BIM3X-8.2 is 2.3 mV, measured as the voltage difference at 25°C after cycling between −40°C and 125°C. This parameter quantifies repeatability loss due to mechanical stress in the silicon die and package; for LM4050BIM3X-8.2, it corresponds to 0.028% of full scale, making it suitable for closed-loop calibration systems requiring consistent reference values across thermal cycles.
How does the noise performance of LM4050BIM3X-8.2 compare to other 8.2 V shunt references?
LM4050BIM3X-8.2 specifies 150 μVRMS wideband noise (10 Hz–10 kHz), which is 50% lower than the LM4040BIM3X-8.2 (300 μVRMS) and competitive with higher-cost series references in its class. This noise level directly supports 16-bit effective resolution in data converters, and LM4050BIM3X-8.2 achieves it without external filtering-reducing bill-of-materials and board area versus alternatives requiring post-filtering.
Is LM4050BIM3X-8.2 qualified for automotive applications?
No, LM4050BIM3X-8.2 is not AEC-Q100 qualified. The automotive-grade variant is LM4050BQIM3X-8.2 (Q1 suffix), which undergoes additional stress testing and is manufactured on an automotive-grade flow. For non-automotive industrial or medical designs requiring −40°C to 125°C operation, LM4050BIM3X-8.2 remains fully specified and supported-but LM4050BQIM3X-8.2 must be used where AEC-Q100 Grade 1 compliance is mandated.
LM4050BIM3X-8.2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Reference Type:
- Shunt
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 8.192V
- Voltage - Output (Max):
- -
- Current - Output:
- 15 mA
- Tolerance:
- ±0.2%
- 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 ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
LM4050BIM3X-8.2 FAQ
1.How can I place an order for LM4050BIM3X-8.2 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4050BIM3X-8.2 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 LM4050BIM3X-8.2 reliable?
The price and inventory of LM4050BIM3X-8.2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4050BIM3X-8.2 is usually 5 days.
3.What payment methods are accepted for LM4050BIM3X-8.2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4050BIM3X-8.2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4050BIM3X-8.2?
LM4050BIM3X-8.2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4050BIM3X-8.2 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 LM4050BIM3X-8.2?
For technical support, including LM4050BIM3X-8.2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4050BIM3X-8.2 requirements.
6.How does Aetrix verify that LM4050BIM3X-8.2 is sourced from the original manufacturer or authorized distributors?
All LM4050BIM3X-8.2 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 LM4050BIM3X-8.2 meets industry standards.
7.What is the process for return or replacement of LM4050BIM3X-8.2?
All LM4050BIM3X-8.2 units undergo pre-shipment inspection (PSI). If there is an issue with LM4050BIM3X-8.2, 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 LM4050BIM3X-8.2 part is unused and in its original packaging.
Return procedure for LM4050BIM3X-8.2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM4050BIM3X-8.2 Tags
-
TL431AIDBZR
Texas Instruments
-
TL431BQDBZR
Texas Instruments
-
AN431AN-ATRG1
Diodes Incorporated
-
LM4040CYM3-2.5-TR
Microchip Technology
-
LM4040CYM3-4.1-TR
Microchip Technology
-
LM4040EIM3-2.5/NOPB
Texas Instruments
-
AZ431LBNTR-G1
Diodes Incorporated
-
LM4040D20IDBZR
Texas Instruments
-
LM4041DIM3-ADJ/NOPB
Texas Instruments
-
LM4040DIM3X-2.5/NOPB
Texas Instruments
-
LM4040DIM3-2.5/NOPB
Texas Instruments
-
AZ431LANTR-G1
Diodes Incorporated
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
