My Inquiry
My Account
Texas Instruments LM4050CEM3X-5.0/NOPB
- Part No.:
- LM4050CEM3X-5.0/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
LM4050CEM3X-5.0/NOPB.pdf
- Description:
- IC VREF SHUNT 0.5% SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:1,373
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LM4050CEM3X-5.0/NOPB from Texas Instruments is a precision micropower shunt voltage reference in SOT-23 package, delivering a stable 5.0 V reverse breakdown voltage with ±0.5% initial tolerance (C-grade), 50 ppm/°C max temperature coefficient, and 93 μVrms wideband noise (10 Hz–10 kHz). It operates from 56 μA to 15 mA, supports capacitive loads without external compensation, and targets high-accuracy analog signal conditioning in portable instrumentation.
For engineers reviewing the LM4050CEM3X-5.0/NOPB datasheet, LM4050CEM3X-5.0/NOPB pinout, LM4050CEM3X-5.0/NOPB application, or LM4050CEM3X-5.0/NOPB equivalent, key selection criteria include its C-grade tolerance, industrial/extended temperature range (−40°C to +125°C), no-output-capacitor operation, low dynamic impedance (0.5 Ω), and compatibility with battery-powered data acquisition systems requiring long-term stability (120 ppm drift over 1000 hrs).
Technical Context
The LM4050CEM3X-5.0/NOPB uses bandgap-based Zener-zap trimmed shunt architecture with curvature-corrected temperature drift compensation. Its two-terminal design requires only an external current-limiting resistor and tolerates any capacitive load without oscillation.
It achieves ±0.5% output voltage tolerance at 25°C and maintains ≤50 ppm/°C tempco across −40°C to +125°C. Dynamic impedance remains ≤0.5 Ω at 1 mA, enabling stable regulation under varying load currents from 56 μA to 15 mA.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.0 V nominal reverse breakdown voltage - provides precise 5 V reference for ADCs, DACs, and comparators. |
| Initial Tolerance | ±0.5% at 25°C (C-grade) - enables cost-sensitive designs where <±0.1% is not required. |
| Tempco | ≤50 ppm/°C max over −40°C to +125°C - ensures <±2.5 mV total drift across full extended temperature range. |
| Operating Current | 56 μA min to 15 mA max - supports ultra-low-power sensor nodes and robust industrial current-sink applications. |
| Noise (10 Hz–10 kHz) | 93 μVrms typical - suitable for 16-bit+ data acquisition where reference noise contributes directly to system ENOB. |
| Dynamic Impedance | 0.5 Ω at 1 mA - minimizes load-induced voltage shift during fast current transients. |
| Long-Term Stability | 120 ppm over 1000 hrs - predictable aging behavior for calibration-critical equipment. |
Pinout & Package
SOT-23 (DBZ) package, 2.92 mm × 1.30 mm body size, surface-mount, 3-pin configuration with Pin 3 unconnected.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (Pin 1) | Shunt current input / reference voltage node | Connected to regulated 5.0 V output; sinks all operating current through external resistor. |
| Anode (Pin 2) | Common return / ground reference | Must be connected to system ground; defines 0 V reference for cathode voltage. |
| NC (Pin 3) | No internal connection | Left floating per datasheet; no PCB trace or solder mask required. |
Key Features
| Feature | Design Value |
|---|---|
| No output capacitor required | Stable operation with any capacitive load up to 10 μF - eliminates BOM cost and layout area for stabilization cap. |
| Fixed 5.0 V breakdown | Factory-trimmed Zener-zap voltage - avoids external trimming components and calibration steps. |
| Micropower operation | 56 μA minimum operating current - extends battery life in portable multimeters and handheld sensors. |
| Wide temperature range | Rated for −40°C to +125°C - supports automotive under-hood and industrial process control environments. |
| Low dynamic impedance | 0.5 Ω at 1 mA - maintains voltage accuracy during pulsed load conditions in switched-mode power monitor circuits. |
Applications
| Portable Instrumentation | Data Acquisition Systems |
|---|---|
Use Scenario: Handheld digital multimeter with 200 kS/s sampling and auto-ranging. IC Role / Device Role / Timing Role: Shunt reference for 16-bit SAR ADC and precision op-amp front-end. Use Value: 5.0 V output with 93 μVrms noise and ≤50 ppm/°C tempco ensures <0.01% measurement linearity across battery discharge cycle and ambient temperature shifts. |
Use Scenario: Industrial PLC analog input module with 8-channel simultaneous sampling. IC Role / Device Role / Timing Role: Common reference source for multiple 24-bit delta-sigma ADCs. Use Value: C-grade tolerance and 120 ppm long-term stability reduce factory calibration frequency and field recalibration intervals. |
| Energy Management | Precision Audio Components |
Use Scenario: Smart electricity meter with metrology-grade current/voltage sensing. IC Role / Device Role / Timing Role: Reference for isolated current-sense amplifier and energy computation IC. Use Value: Stable 5.0 V output under 56 μA–15 mA load variation ensures consistent gain accuracy across wide dynamic range of grid current measurements. |
Use Scenario: High-fidelity DAC-based headphone amplifier with discrete Class-A output stage. IC Role / Device Role / Timing Role: Voltage reference for DAC internal bias and analog output buffer. Use Value: Low 93 μVrms noise directly limits THD+N floor, supporting >110 dB SNR in audio signal chain. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TL4050C50IDBZR | Same 5.0 V, ±0.5% C-grade, SOT-23, but higher 100 μVrms noise and 1.0 Ω dynamic impedance. | Less suitable for 16-bit+ data acquisition where noise and load regulation are critical. | Select if TI second-source assurance is prioritized over noise performance. |
| ADR3450ARJZ-R7 | 5.0 V series reference, ±0.1% A-grade, 10 μVrms noise, but requires ≥100 μA supply current and external bypass cap. | Better noise and accuracy, but incompatible pinout and higher quiescent current limits battery life. | Select when ultra-low noise and tighter tolerance justify added complexity and power budget. |
Compared with TL4050C50IDBZR, LM4050CEM3X-5.0/NOPB delivers 7% lower noise and half the dynamic impedance; compared with ADR3450ARJZ-R7, it offers direct drop-in replacement in shunt topologies with no supply rail dependency, though at reduced absolute accuracy.
Availability
LM4050CEM3X-5.0/NOPB is available at Aetrix Electronics and suitable for portable instrumentation, industrial data acquisition, and energy management systems requiring stable component supply with guaranteed long-term availability and traceable sourcing.
Supply support for LM4050CEM3X-5.0/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 high-volume manufacturing.
The LM4050-N family was engineered for space-constrained, low-power applications demanding high initial accuracy and long-term stability - particularly in portable test equipment, industrial sensors, and automotive subsystems.
FAQ
What is the minimum operating current for LM4050CEM3X-5.0/NOPB?
The LM4050CEM3X-5.0/NOPB requires a minimum operating current of 56 μA at 25°C, increasing to 90 μA across the extended temperature range (−40°C to +125°C). This current must be supplied via an external series resistor to the cathode; insufficient current causes loss of regulation and increased output error.
Does LM4050CEM3X-5.0/NOPB require an output capacitor?
No, the LM4050CEM3X-5.0/NOPB is designed to remain stable with any capacitive load - including 0 μF - eliminating the need for an external output capacitor. This simplifies layout and reduces BOM count, unlike many competing shunt references that mandate minimum capacitance for phase margin.
What is the temperature coefficient specification for LM4050CEM3X-5.0/NOPB?
The LM4050CEM3X-5.0/NOPB has a maximum temperature coefficient of 50 ppm/°C over −40°C to +125°C. At 5.0 V output, this translates to ≤±2.5 mV total deviation across the full extended temperature range, verified by production testing and statistical correlation per TI's SQC methodology.
How does LM4050CEM3X-5.0/NOPB differ from the A-grade version LM4050AIM3X-5.0/NOPB?
The LM4050CEM3X-5.0/NOPB is C-grade (±0.5% initial tolerance at 25°C), while LM4050AIM3X-5.0/NOPB is A-grade (±0.1%). Both share identical 50 ppm/°C max tempco, 93 μVrms noise, and SOT-23 packaging. The C-grade variant trades tighter initial accuracy for lower unit cost in applications where post-calibration or relaxed tolerance is acceptable.
Is LM4050CEM3X-5.0/NOPB qualified for automotive applications?
No - LM4050CEM3X-5.0/NOPB is part of the industrial LM4050-N series. For automotive use, TI offers the LM4050-N-Q1 family (e.g., LM4050CQEM3X-5.0/NOPB), which is AEC-Q100 Grade 1 qualified (−40°C to +125°C) and manufactured on an automotive-grade flow. The standard LM4050CEM3X-5.0/NOPB lacks automotive qualification documentation and stress testing.
LM4050CEM3X-5.0/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:
- Active
- Reference Type:
- Shunt
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 5V
- 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:
- 90 µA
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
LM4050CEM3X-5.0/NOPB FAQ
1.How can I place an order for LM4050CEM3X-5.0/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4050CEM3X-5.0/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-5.0/NOPB reliable?
The price and inventory of LM4050CEM3X-5.0/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-5.0/NOPB is usually 5 days.
3.What payment methods are accepted for LM4050CEM3X-5.0/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4050CEM3X-5.0/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4050CEM3X-5.0/NOPB?
LM4050CEM3X-5.0/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4050CEM3X-5.0/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-5.0/NOPB?
For technical support, including LM4050CEM3X-5.0/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4050CEM3X-5.0/NOPB requirements.
6.How does Aetrix verify that LM4050CEM3X-5.0/NOPB is sourced from the original manufacturer or authorized distributors?
All LM4050CEM3X-5.0/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-5.0/NOPB meets industry standards.
7.What is the process for return or replacement of LM4050CEM3X-5.0/NOPB?
All LM4050CEM3X-5.0/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM4050CEM3X-5.0/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-5.0/NOPB part is unused and in its original packaging.
Return procedure for LM4050CEM3X-5.0/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM4050CEM3X-5.0/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…
