My Inquiry
My Account
Texas Instruments LM4120IM5X-2.0/NOPB
- Part No.:
- LM4120IM5X-2.0/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LM4120IM5X-2.0/NOPB.pdf
- Description:
- IC VREF SERIES 0.5% SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,533
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LM4120IM5X-2.0/NOPB from Texas Instruments is a precision micropower low-dropout bandgap voltage reference delivering 2.048 V output with ±0.5% initial accuracy, 50 ppm/°C temperature coefficient, and 120 mV typical dropout at 1 mA - optimized for battery-powered instrumentation and portable data acquisition systems.
For engineers reviewing the LM4120IM5X-2.0/NOPB datasheet, LM4120IM5X-2.0/NOPB pinout, LM4120IM5X-2.0/NOPB application, or LM4120IM5X-2.0/NOPB equivalent, key selection criteria include enable-controlled power-down (ISS < 2 µA), ±5 mA source/sink capability, SOT-23-5 package compatibility, and industrial temperature range (−40°C to 85°C) operation.
Technical Context
The LM4120IM5X-2.0/NOPB implements a bandgap-based reference core with integrated enable control and low-quiescent-current biasing. Its architecture supports operation from VIN = 2 V to 12 V while maintaining regulation down to VIN − VOUT = 120 mV at 1 mA load.
It features a dedicated Enable pin requiring ~6 µA to activate, logic-level thresholds (VH = 2.4 V, VL = 0.4 V), and a floating REF pin that must remain unconnected to preserve noise immunity and stability - all within a 5-pin SOT-23 footprint.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.048 V nominal, ±0.5% initial accuracy over −40°C to 85°C - enables precise 12-bit ADC/DAC biasing without trimming. |
| Temperature Coefficient | 50 ppm/°C max (−40°C to 125°C) - ensures ≤1.024 mV drift over full industrial range. |
| Dropout Voltage | 120 mV typical at 1 mA load - allows regulation from 2.148 V input, critical for single-cell Li-ion or coin-cell systems. |
| Supply Current | 160 µA typical, <2 µA in power-down - extends battery life in sleep-mode sensor nodes. |
| Output Drive | ±5 mA source/sink capability - directly drives ADC reference inputs, op-amp feedback networks, or small DACs. |
| Enable Thresholds | VH = 2.4 V min, VL = 0.4 V max - compatible with standard CMOS/TTL logic without level-shifting. |
| Output Noise | 36 µVPP (10 Hz–10 kHz) - suitable for 16-bit SAR ADCs requiring low-noise reference sources. |
Pinout & Package
SOT-23-5 (DBV) package, 1.60 mm × 2.90 mm body size, RoHS-compliant, tape-and-reel (3000 pcs/reel).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - REF | Reference node | Must remain unconnected; sensitive to noise and capacitive loading - isolation prevents output error and instability. |
| 2 - GND | Ground reference | Primary return path for supply, load, and enable currents; requires low-impedance PCB connection to minimize ground bounce. |
| 3 - EN | Enable control input | Analog input enabling shutdown when pulled ≤0.4 V; tied to VIN for always-on operation; 6 µA activation current required. |
| 4 - VIN | Positive supply input | Accepts 2 V to 12 V; internal LDO-like regulation ensures stable output despite input ripple or sag. |
| 5 - VOUT | Reference output | 2.048 V precision source/sink node; requires 0.022 µF–1 µF ceramic or tantalum output capacitor for stability and transient response. |
Key Features
| Feature | Design Value |
|---|---|
| Low Dropout Operation | 120 mV typical at 1 mA enables use with ultra-low-input-voltage rails (e.g., 2.15 V from discharged LiFePO₄). |
| Enable-Controlled Power-Down | Reduces supply current to <2 µA - essential for duty-cycled IoT sensors and energy-harvesting systems. |
| Source/Sink Capability | ±5 mA output drive eliminates need for external buffer amplifiers in precision analog signal chains. |
| Stable with Ceramic Capacitors | Guaranteed stability with 0.022 µF–0.047 µF ceramic output caps - simplifies layout and reduces BOM cost vs. tantalum alternatives. |
| Industrial Temperature Range | Specified performance across −40°C to +85°C - validated for deployment in automotive cabin modules and factory-floor instrumentation. |
Applications
| Portable Data Acquisition | Battery-Powered Instrumentation |
|---|---|
Use Scenario: Handheld multimeter sampling 16-bit ADC with rail-to-rail input range. IC Role / Device Role / Timing Role: Precision 2.048 V reference establishing ADC full-scale voltage and offset null point. Use Value: ±0.5% initial accuracy and 50 ppm/°C TC ensure <0.02% measurement error across operating temperature without calibration. |
Use Scenario: Portable gas analyzer using electrochemical sensors requiring stable bias voltage. IC Role / Device Role / Timing Role: Low-noise, low-drift reference for sensor excitation and analog front-end gain-setting resistors. Use Value: 36 µVPP (10 Hz–10 kHz) noise and <2 µA shutdown current extend battery runtime while preserving measurement resolution. |
| Precision Regulator Feedback | Medical Sensor Interface |
Use Scenario: Low-power LDO regulator with adjustable output set via resistor divider referenced to LM4120IM5X-2.0/NOPB. IC Role / Device Role / Timing Role: Stable voltage reference for feedback loop of high-accuracy linear regulator powering analog signal chain. Use Value: 120 mV dropout and ±5 mA drive allow direct integration into compact regulator designs without external pass transistors. |
Use Scenario: Wearable ECG monitor digitizing biopotential signals with 12-bit resolution. IC Role / Device Role / Timing Role: Reference source for instrumentation amplifier and successive-approximation ADC reference input. Use Value: Micropower operation (160 µA) and enable control support ultra-low-duty-cycle wake-up modes, extending wearable battery life to >7 days. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM4120AIM5X-2.048/NOPB | 0.2% initial accuracy (vs. 0.5%), same 50 ppm/°C TC and SOT-23-5 package | Required where absolute accuracy dominates cost sensitivity - e.g., calibrated test equipment | Select when system-level calibration is impractical and tighter initial tolerance is mandatory. |
| REF3020AIDBZR | 2.048 V, 0.2% accuracy, 50 ppm/°C, but higher 50 µA quiescent current and no enable pin | Lacks power-down mode - unsuitable for intermittent-sampling systems requiring µA-level sleep current | Prefer when lowest possible noise (25 µVPP) is critical and continuous operation is acceptable. |
Compared with LM4120IM5X-2.0/NOPB, the A-grade variant trades cost for accuracy without altering power or thermal behavior, while REF3020AIDBZR sacrifices enable control and micropower operation for marginally lower noise - making LM4120IM5X-2.0/NOPB optimal for battery-constrained, intermittently active precision analog systems.
Availability
LM4120IM5X-2.0/NOPB is available at Aetrix Electronics and suitable for portable instrumentation, battery-powered data loggers, and precision sensor interfaces requiring stable component supply with guaranteed long-term sourcing.
Supply support for LM4120IM5X-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 company specializing in analog and embedded processing technologies, with leadership in precision analog ICs and broad industrial portfolio coverage.
The LM4120 series was designed for low-power, high-accuracy voltage referencing in space- and energy-constrained applications - particularly portable, battery-operated instrumentation and sensor signal conditioning.
FAQ
What is the maximum input voltage for LM4120IM5X-2.0/NOPB?
The absolute maximum input voltage for LM4120IM5X-2.0/NOPB is 14 V, but recommended operating conditions specify VIN up to 12 V. Exceeding 12 V risks reliability degradation even if below the 14 V stress limit, and dropout performance is only characterized up to 12 V per datasheet Section 6.3.
Does LM4120IM5X-2.0/NOPB require an external output capacitor?
Yes - LM4120IM5X-2.0/NOPB requires a minimum 0.022 µF ceramic output capacitor for stability. The device is optimized for 0.022 µF to 0.047 µF ceramics; larger values (up to 1 µF) are permitted but require tantalum construction above 0.047 µF, and may impact transient response without validation.
Can the REF pin of LM4120IM5X-2.0/NOPB be connected to ground or bypassed?
No - the REF pin of LM4120IM5X-2.0/NOPB must remain unconnected in all configurations. Connecting it to ground, VOUT, or a capacitor introduces parasitic paths that degrade accuracy, increase noise, and risk oscillation due to internal node sensitivity.
What is the typical power-down current of LM4120IM5X-2.0/NOPB?
The typical power-down supply current of LM4120IM5X-2.0/NOPB is 1 µA when the Enable pin is held at ≤0.2 V, and remains <2 µA across the full −40°C to +85°C industrial temperature range - verified in Electrical Characteristics Table 6.5.
Is LM4120IM5X-2.0/NOPB pin-compatible with other LM4120 variants?
Yes - all LM4120 variants in SOT-23-5 (DBV) packaging, including LM4120IM5X-2.0/NOPB, share identical pinout, footprint, and thermal characteristics. Voltage option (e.g., 2.048 V vs. 2.5 V) and grade (I vs. A) do not affect mechanical or electrical pin compatibility.
LM4120IM5X-2.0/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- SC-74A, SOT-753
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Reference Type:
- Series
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 2.048V
- Voltage - Output (Max):
- -
- Current - Output:
- 5 mA
- Tolerance:
- ±0.5%
- Temperature Coefficient:
- 50ppm/°C
- Noise - 0.1Hz to 10Hz:
- 20µVp-p
- Noise - 10Hz to 10kHz:
- 36µVp-p
- Voltage - Input:
- 2V ~ 12V
- Current - Supply:
- 275µA
- Current - Cathode:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
LM4120IM5X-2.0/NOPB FAQ
1.How can I place an order for LM4120IM5X-2.0/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4120IM5X-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 LM4120IM5X-2.0/NOPB reliable?
The price and inventory of LM4120IM5X-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 LM4120IM5X-2.0/NOPB is usually 5 days.
3.What payment methods are accepted for LM4120IM5X-2.0/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4120IM5X-2.0/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4120IM5X-2.0/NOPB?
LM4120IM5X-2.0/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4120IM5X-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 LM4120IM5X-2.0/NOPB?
For technical support, including LM4120IM5X-2.0/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4120IM5X-2.0/NOPB requirements.
6.How does Aetrix verify that LM4120IM5X-2.0/NOPB is sourced from the original manufacturer or authorized distributors?
All LM4120IM5X-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 LM4120IM5X-2.0/NOPB meets industry standards.
7.What is the process for return or replacement of LM4120IM5X-2.0/NOPB?
All LM4120IM5X-2.0/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM4120IM5X-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 LM4120IM5X-2.0/NOPB part is unused and in its original packaging.
Return procedure for LM4120IM5X-2.0/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM4120IM5X-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…
