My Inquiry
My Account
Texas Instruments LM4050CEM3X-4.1/NOPB
- Part No.:
- LM4050CEM3X-4.1/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
LM4050CEM3X-4.1/NOPB.pdf
- Description:
- IC VREF SHUNT 0.5% SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:3,093
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LM4050CEM3X-4.1/NOPB from Texas Instruments is a precision micropower shunt voltage reference in SOT-23 package, delivering 4.096 V nominal output with ±21 mV (±0.5%) initial tolerance at 25°C, 50 ppm/°C max temperature coefficient, and 93 μVrms wideband noise (10 Hz–10 kHz). It operates from 73 μA to 15 mA, enabling use in low-power data acquisition and portable instrumentation.
For engineers reviewing the LM4050CEM3X-4.1/NOPB datasheet, LM4050CEM3X-4.1/NOPB pinout, LM4050CEM3X-4.1/NOPB application, or LM4050CEM3X-4.1/NOPB equivalent, key selection criteria include industrial/extended temperature range support (−40°C to 125°C), no-output-capacitor operation, capacitive load tolerance, and AEC-Q100 Grade 1 qualification for automotive systems.
Technical Context
The LM4050CEM3X-4.1/NOPB implements a bandgap-based shunt reference architecture with curvature-corrected temperature drift compensation and Zener-zap trim at wafer sort. Its dynamic impedance remains ≤0.5 Ω at 1 mA, ensuring stable regulation under varying load conditions.
It functions as a two-terminal device requiring only an external current-limiting resistor, with cathode as the regulated node and anode tied to ground. The NC pin (Pin 3) is unconnected and must be left floating or tied to Pin 2 per TI specification.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 4.096 V nominal; enables precise 12-bit ADC full-scale calibration (e.g., 4.096 V = 1 LSB = 1 mV) |
| Initial Tolerance | ±21 mV (±0.5%) at 25°C; C-grade part suitable for cost-sensitive industrial applications |
| Temp Coefficient | ≤50 ppm/°C over −40°C to 125°C; ensures <±0.5% output drift across full operating range |
| Operating Current | 73–15,000 μA; supports ultra-low-power sleep modes and high-current precision DAC biasing |
| Output Noise | 93 μVrms (10 Hz–10 kHz); meets requirements for 16-bit SAR ADC reference stability |
| Dynamic Impedance | 0.5 Ω at 1 mA; minimizes load-induced voltage error in varying-current sensor interfaces |
| Long-Term Stability | 120 ppm after 1000 hrs; predictable aging behavior for field-deployed measurement systems |
Pinout & Package
SOT-23 (DBZ) package: 2.92 mm × 1.30 mm body, 3-pin surface-mount, JEDEC MO-178AC compliant. Thermal resistance RθJA = 287°C/W (board-mounted).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (Pin 1) | Shunt current input / regulated voltage node | Connected to supply rail via series resistor; output voltage appears here relative to ground |
| Anode (Pin 2) | Reference ground terminal | Must be connected to system ground; defines 0 V reference for cathode voltage |
| NC (Pin 3) | No internal connection | Must remain unconnected or tied to Pin 2; no electrical function or thermal benefit |
Key Features
| Feature | Design Value |
|---|---|
| No output capacitor required | Eliminates BOM cost and board space for stabilization cap; simplifies layout in space-constrained designs |
| Tolerates capacitive loads | Stable with any value of output capacitance; avoids oscillation risk when driving ADC sample-and-hold inputs |
| Fixed 4.096 V breakdown | Matches standard 12-bit full-scale range (4096 steps); enables direct LSB = 1 mV scaling without gain adjustment |
| Industrial & extended temp range | Specified from −40°C to 125°C; supports operation in engine control units and outdoor industrial sensors |
| AEC-Q100 Grade 1 qualified | Validated for automotive powertrain and chassis applications per AEC-Q100 Rev H stress testing |
Applications
| Portable Data Loggers | Automotive Sensor Signal Conditioning |
|---|---|
Use Scenario: Battery-powered environmental monitors logging temperature, humidity, and pressure over weeks on coin-cell power. IC Role / Device Role / Timing Role: Shunt reference providing stable 4.096 V excitation and ADC reference for 12-bit SAR converters. Use Value: Micropower operation (73 μA min) extends battery life; no-output-capacitor design reduces component count and PCB area. | Use Scenario: Engine coolant temperature and manifold absolute pressure (MAP) sensor signal conditioning in powertrain ECUs. IC Role / Device Role / Timing Role: Precision voltage reference for ratiometric sensor excitation and analog front-end ADC reference. Use Value: AEC-Q100 Grade 1 qualification and −40°C to 125°C operation ensure reliability in under-hood environments. |
| Industrial Process Transmitters | Precision Audio DAC Reference |
Use Scenario: 4–20 mA loop-powered field transmitters measuring flow, level, or pH in chemical plants. IC Role / Device Role / Timing Role: Two-terminal shunt reference establishing accurate 4.096 V reference for microcontroller ADC and DAC circuits. Use Value: Wide 73 μA–15 mA operating range accommodates loop power constraints while maintaining ±0.5% accuracy. | Use Scenario: High-fidelity audio DACs in studio-grade digital-to-analog converters requiring low-noise analog references. IC Role / Device Role / Timing Role: Low-noise (93 μVrms) voltage reference for 16-bit+ audio DAC voltage scaling and bias generation. Use Value: Bandgap-derived stability and curvature correction minimize harmonic distortion introduced by reference drift. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TL4050C41IDBZR | Same 4.096 V, ±0.5% tolerance, SOT-23 package; 100 μA min operating current vs. 73 μA for LM4050CEM3X-4.1/NOPB | Higher minimum current limits use in ultra-low-power (<100 μA) systems | Select TL4050C41IDBZR if sourcing consistency with TI's newer TL4050 family is preferred |
| MAX6008AEUR+T | 4.096 V, ±0.2% (A-grade), SOT-23; 60 μA min current but 100 ppm/°C tempco vs. 50 ppm/°C for LM4050CEM3X-4.1/NOPB | Better initial accuracy but higher drift; less suitable for wide-temperature industrial deployments | Select MAX6008AEUR+T where tighter initial tolerance outweighs long-term thermal stability needs |
Compared with TL4050C41IDBZR and MAX6008AEUR+T, the LM4050CEM3X-4.1/NOPB offers the lowest combination of minimum operating current (73 μA) and temperature coefficient (50 ppm/°C), making it optimal for battery-powered industrial sensors requiring both low quiescent power and wide-temperature accuracy.
Availability
LM4050CEM3X-4.1/NOPB is available at Aetrix Electronics and suitable for portable instrumentation, automotive sensor modules, and industrial process transmitters requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LM4050CEM3X-4.1/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 company headquartered in Dallas, Texas, 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 automotive-grade measurement systems demanding high initial accuracy and low temperature drift.
FAQ
What is the output voltage tolerance of the LM4050CEM3X-4.1/NOPB at 25°C?
The LM4050CEM3X-4.1/NOPB has a C-grade initial tolerance of ±21 mV (±0.5%) at 25°C, corresponding to a 4.096 V nominal output. This is verified in Section 6.7 of the SNOS455G datasheet under "Reverse Breakdown Voltage Tolerance" for the 4.1-V option and C-grade devices (LM4050CEM3).
Does the LM4050CEM3X-4.1/NOPB require an external output capacitor?
No, the LM4050CEM3X-4.1/NOPB does not require an external output capacitor. Its internal design ensures stability with any capacitive load, including direct connection to ADC sample-and-hold inputs or DAC reference pins - a key advantage confirmed in the "Features" section and Figure 15 of the SNOS455G datasheet.
What is the minimum operating current for the LM4050CEM3X-4.1/NOPB over temperature?
The LM4050CEM3X-4.1/NOPB requires a minimum operating current of 73 μA at −40°C to 125°C (extended temperature range), as specified in Table 6.7 "Electrical Characteristics: 4.1-V Option" under IRMIN. At 25°C, the typical minimum is 52 μA, but design must accommodate the worst-case 73 μA limit.
Is the LM4050CEM3X-4.1/NOPB qualified for automotive applications?
Yes, the LM4050CEM3X-4.1/NOPB is AEC-Q100 Grade 1 qualified, as explicitly stated in the "Features" section and Section 1 of the SNOS455G datasheet. This qualification covers operation from −40°C to 125°C and validates reliability for automotive powertrain and chassis control modules.
What is the wideband noise performance of the LM4050CEM3X-4.1/NOPB?
The LM4050CEM3X-4.1/NOPB delivers 93 μVrms wideband noise over 10 Hz to 10 kHz, per Table 6.7 in the SNOS455G datasheet. This value is measured at 100 μA operating current and supports high-resolution (≥16-bit) analog-to-digital conversion without added filtering.
LM4050CEM3X-4.1/NOPB 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):
- 4.096V
- Voltage - Output (Max):
- -
- Current - Output:
- 15 mA
- Tolerance:
- ±0.5%
- Temperature Coefficient:
- 50ppm/°C
- Noise - 0.1Hz to 10Hz:
- -
- Noise - 10Hz to 10kHz:
- 93µVrms
- Voltage - Input:
- -
- Current - Supply:
- -
- Current - Cathode:
- 78 µA
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
LM4050CEM3X-4.1/NOPB FAQ
1.How can I place an order for LM4050CEM3X-4.1/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4050CEM3X-4.1/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 LM4050CEM3X-4.1/NOPB reliable?
The price and inventory of LM4050CEM3X-4.1/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4050CEM3X-4.1/NOPB is usually 5 days.
3.What payment methods are accepted for LM4050CEM3X-4.1/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4050CEM3X-4.1/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4050CEM3X-4.1/NOPB?
LM4050CEM3X-4.1/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4050CEM3X-4.1/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 LM4050CEM3X-4.1/NOPB?
For technical support, including LM4050CEM3X-4.1/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4050CEM3X-4.1/NOPB requirements.
6.How does Aetrix verify that LM4050CEM3X-4.1/NOPB is sourced from the original manufacturer or authorized distributors?
All LM4050CEM3X-4.1/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 LM4050CEM3X-4.1/NOPB meets industry standards.
7.What is the process for return or replacement of LM4050CEM3X-4.1/NOPB?
All LM4050CEM3X-4.1/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM4050CEM3X-4.1/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 LM4050CEM3X-4.1/NOPB part is unused and in its original packaging.
Return procedure for LM4050CEM3X-4.1/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM4050CEM3X-4.1/NOPB 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…
