My Inquiry
My Account
Texas Instruments LM4050CEM3X-2.0/NOPB
- Part No.:
- LM4050CEM3X-2.0/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
LM4050CEM3X-2.0/NOPB.pdf
- Description:
- IC VREF SHUNT 0.5% SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:1,876
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LM4050CEM3X-2.0/NOPB from Texas Instruments is a precision micropower shunt voltage reference in SOT-23 package, delivering 2.048 V nominal output with ±0.5% initial tolerance (C grade), 50 ppm/°C max temperature coefficient, and 60 μA minimum operating current. It operates from −40°C to 85°C and requires no output capacitor while tolerating capacitive loads - ideal for space-constrained battery-powered instrumentation.
For engineers reviewing the LM4050CEM3X-2.0/NOPB datasheet, LM4050CEM3X-2.0/NOPB pinout, LM4050CEM3X-2.0/NOPB application, or LM4050CEM3X-2.0/NOPB equivalent, key selection criteria include reverse breakdown voltage accuracy at low current, thermal hysteresis (0.7 mV), dynamic impedance (0.3 Ω), long-term stability (120 ppm), and compatibility with high-capacitance ADC reference inputs.
Technical Context
The LM4050CEM3X-2.0/NOPB uses bandgap-based Zener-zap trimmed shunt architecture with curvature-corrected temperature drift compensation. Its fixed 2.048 V reverse breakdown voltage is optimized for 12-bit and 16-bit analog-to-digital converters requiring exact binary-scaled references.
It achieves stable regulation without external capacitance by integrating low dynamic impedance (0.3 Ω at 1 mA) and inherent phase margin across 10 Hz–10 kHz bandwidth. The device maintains ±0.5% output tolerance over −40°C to 85°C via fused wafer-level trim and on-die thermal compensation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.048 V nominal - matches 12-bit full-scale binary scaling (212 = 4096 → 2.048 V = 0.5 mV per LSB) |
| Initial Tolerance | ±0.5% at 25°C (C grade) - enables single-point calibration in portable data loggers |
| Temp Coefficient | 50 ppm/°C max - contributes ≤±3.25 mV error over −40°C to 85°C ambient range |
| Min Operating Current | 60 μA - supports ultra-low-power wake-up circuits and energy-harvesting sensors |
| Dynamic Impedance | 0.3 Ω at 1 mA - ensures <1 mV load-induced error for 3 mA reference sink variations |
| Wideband Noise | 41 μVrms (10 Hz–10 kHz) - suitable for 16-bit SAR ADCs with ≥90 dB SNR requirement |
| Long-Term Stability | 120 ppm (1000 hrs) - guarantees <±0.25 mV drift in 5-year industrial deployments |
Pinout & Package
SOT-23 (DBZ) package, 2.92 mm × 1.30 mm body size, surface-mount compatible with standard reflow profiles.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (Pin 1) | Shunt current input / reference voltage node | Connects to regulated voltage rail; sinks all load + reference current; sets VREF = VCATHODE |
| 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 | Enables direct connection to high-capacitance ADC reference pins (e.g., 10 nF+), eliminating BOM cost and layout area |
| Tolerates capacitive loads | Stable with ≥100 nF ceramic bypass - avoids oscillation in noisy mixed-signal PCB environments |
| Fixed 2.048 V breakdown | Exact match for 12-bit systems (4096 steps); eliminates scaling errors in firmware or external dividers |
| Low 60 μA min current | Supports operation from coin-cell batteries (e.g., CR2032) for >10 years in sleep-mode sensor nodes |
| Industrial temp range | −40°C to +85°C operation - qualified for factory automation, HVAC controls, and outdoor metering |
Applications
| Portable Data Acquisition | Precision Instrumentation |
|---|---|
Use Scenario: Handheld multimeter measuring 0–2 V DC with 16-bit resolution. IC Role / Device Role / Timing Role: Shunt reference providing stable 2.048 V for ADC full-scale calibration. Use Value: ±0.5% initial tolerance and 50 ppm/°C TC ensure <±3.5 mV total error across operating temperature, meeting Class II accuracy standards. |
Use Scenario: Benchtop oscilloscope front-end using 14-bit ADC for analog signal digitization. IC Role / Device Role / Timing Role: Low-noise voltage reference for ADC reference input with 41 μVrms noise floor. Use Value: 41 μVrms wideband noise enables >90 dB SNR, preserving vertical resolution without external filtering. |
| Energy Management Systems | Battery-Powered Sensors |
Use Scenario: Smart electricity meter monitoring AC line voltage via isolated ADC. IC Role / Device Role / Timing Role: Stable reference for isolated sigma-delta ADC measuring RMS voltage under varying grid conditions. Use Value: 120 ppm long-term stability ensures <±0.25 mV drift over 5 years, maintaining billing-grade accuracy without field recalibration. |
Use Scenario: Wireless temperature node powered by Li-SOCl₂ battery with 10-year lifespan. IC Role / Device Role / Timing Role: Micropower shunt reference enabling 60 μA minimum current draw during ADC sampling bursts. Use Value: 60 μA start-up current allows operation down to 2.2 V supply, extending usable battery life by 18 months vs. 100 μA alternatives. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TL4050C20IDBZR | Same 2.048 V, ±0.5% tolerance, SOT-23, but higher 100 μA min current and 100 ppm/°C TC | Limited to lower-precision industrial controls where long-term drift <200 ppm is acceptable | Select when legacy TI design reuse is prioritized over micropower or tight TC requirements |
| ADR3420ARJZ-R7 | 2.048 V, ±0.1% A-grade, 3 ppm/°C TC, but requires 100 μA min current and 1 μF output cap | Suitable for metrology-grade instruments needing sub-ppm stability, not space-constrained nodes | Choose only if absolute accuracy outweighs board area, power, and capacitor count constraints |
Compared with TL4050C20IDBZR and ADR3420ARJZ-R7, the LM4050CEM3X-2.0/NOPB uniquely balances C-grade tolerance, micropower operation (60 μA), and capacitor-free stability - making it optimal for battery-powered 12–16-bit data acquisition where size and quiescent current are critical.
Availability
LM4050CEM3X-2.0/NOPB is available at Aetrix Electronics and suitable for portable instrumentation, energy metering, and battery-powered sensor nodes requiring stable component supply with guaranteed long-term continuity.
Supply support for LM4050CEM3X-2.0/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.
The LM4050-N series was engineered for space-constrained, low-power applications demanding high initial accuracy and robust thermal performance - targeting portable test equipment, industrial process sensors, and automotive subsystems.
FAQ
What is the output voltage tolerance of LM4050CEM3X-2.0/NOPB at 25°C?
The LM4050CEM3X-2.0/NOPB has a ±0.5% initial output voltage tolerance at 25°C (C grade), corresponding to ±10.24 mV around the 2.048 V nominal value. This tolerance is production-tested and guaranteed per TI's SNOS455G datasheet Section 6.5, and applies specifically to the LM4050CEM3X-2.0/NOPB variant with SOT-23 packaging and industrial temperature range.
Does LM4050CEM3X-2.0/NOPB require an external output capacitor?
No, the LM4050CEM3X-2.0/NOPB does not require an external output capacitor due to its internally compensated shunt architecture. It remains stable with any capacitive load, including direct connection to ADC reference inputs with ≥100 nF bypass capacitance - a key advantage confirmed in the "No Output Capacitor Required" feature and functional description of the LM4050-N datasheet.
What is the minimum operating current for LM4050CEM3X-2.0/NOPB?
The LM4050CEM3X-2.0/NOPB requires a minimum operating current of 60 μA at 25°C, increasing to 65 μA across the full −40°C to +85°C industrial temperature range. This value is specified in Section 6.5 of the SNOS455G datasheet and is essential for maintaining regulation and specified voltage accuracy.
Can LM4050CEM3X-2.0/NOPB be used in automotive applications?
The LM4050CEM3X-2.0/NOPB is rated for the industrial temperature range (−40°C to +85°C) and is not AEC-Q100 qualified. For automotive use, TI offers the pin-compatible LM4050-Q1 variants (e.g., LM4050CQEM3-2.0/NOPB), which are AEC-Q100 Grade 3 qualified. The LM4050CEM3X-2.0/NOPB itself is intended for industrial and commercial systems only.
What is the thermal hysteresis specification for LM4050CEM3X-2.0/NOPB?
The LM4050CEM3X-2.0/NOPB exhibits 0.7 mV thermal hysteresis, defined as the voltage difference measured at 25°C after cycling between −40°C and +125°C. This parameter is explicitly listed in Section 6.5 of the SNOS455G datasheet and reflects repeatability of the reference voltage after extreme temperature excursions - critical for calibration-critical instrumentation.
LM4050CEM3X-2.0/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:
- Obsolete
- Reference Type:
- Shunt
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 2.048V
- Voltage - Output (Max):
- -
- Current - Output:
- 15 mA
- Tolerance:
- ±0.5%
- Temperature Coefficient:
- 50ppm/°C
- Noise - 0.1Hz to 10Hz:
- -
- Noise - 10Hz to 10kHz:
- 34µVrms
- Voltage - Input:
- -
- Current - Supply:
- -
- Current - Cathode:
- 65 µA
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
LM4050CEM3X-2.0/NOPB FAQ
1.How can I place an order for LM4050CEM3X-2.0/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4050CEM3X-2.0/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-2.0/NOPB reliable?
The price and inventory of LM4050CEM3X-2.0/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-2.0/NOPB is usually 5 days.
3.What payment methods are accepted for LM4050CEM3X-2.0/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4050CEM3X-2.0/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4050CEM3X-2.0/NOPB?
LM4050CEM3X-2.0/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4050CEM3X-2.0/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-2.0/NOPB?
For technical support, including LM4050CEM3X-2.0/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4050CEM3X-2.0/NOPB requirements.
6.How does Aetrix verify that LM4050CEM3X-2.0/NOPB is sourced from the original manufacturer or authorized distributors?
All LM4050CEM3X-2.0/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-2.0/NOPB meets industry standards.
7.What is the process for return or replacement of LM4050CEM3X-2.0/NOPB?
All LM4050CEM3X-2.0/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM4050CEM3X-2.0/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-2.0/NOPB part is unused and in its original packaging.
Return procedure for LM4050CEM3X-2.0/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM4050CEM3X-2.0/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…
