My Inquiry
My Account
Texas Instruments LM4120AIM5-3.0/NOPB
- Part No.:
- LM4120AIM5-3.0/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LM4120AIM5-3.0/NOPB.pdf
- Description:
- IC VREF SERIES 0.2% SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,314
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LM4120AIM5-3.0/NOPB from Texas Instruments is a precision micropower low-dropout bandgap voltage reference delivering 3.0 V output with ±0.2% initial accuracy, 50 ppm/°C temperature coefficient, and 120 mV typical dropout at 1 mA - enabling stable biasing in portable instrumentation, battery-powered data acquisition, and industrial sensor signal chains.
For engineers reviewing the LM4120AIM5-3.0/NOPB datasheet, LM4120AIM5-3.0/NOPB pinout, LM4120AIM5-3.0/NOPB application, or LM4120AIM5-3.0/NOPB equivalent, key selection criteria include enable-controlled power-down (ISS < 2 µA), ±5 mA source/sink capability, SOT-23-5 package compatibility, and guaranteed performance across −40°C to +85°C.
Technical Context
The LM4120AIM5-3.0/NOPB implements a bandgap-based reference core with integrated enable logic and low-impedance output buffer. Its architecture supports operation from VIN = VOUT + 120 mV up to 12 V while maintaining 160 µA typical supply current and sub-2 µA shutdown current.
It features a dedicated REF pin (unconnected), GND-referenced enable input with 0.4 V logic-low threshold, and output capable of sourcing or sinking up to ±5 mA - all within a 1.60 mm × 2.90 mm SOT-23-5 footprint optimized for space-constrained PCB layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 3.0 V ±0.2% (A-grade initial accuracy ensures minimal calibration burden in precision ADC/DAC references) |
| Temperature Coefficient | 50 ppm/°C (ensured over −40°C to +125°C; enables stable operation in automotive and industrial ambient swings) |
| Dropout Voltage | 120 mV typical at 1 mA (allows regulation from 3.12 V input - critical for single-cell Li-ion or coin-cell powered systems) |
| Supply Current | 160 µA typical (supports >1-year battery life in 10 µA average-current IoT sensors) |
| Power-Down Current | <2 µA (enables deep-sleep modes in portable equipment without external switches) |
| Output Drive | ±5 mA (sufficient to directly drive SAR ADC reference inputs or op-amp bias networks without buffering) |
| Enable Threshold | VIL = 0.4 V, VIH = 2.4 V (compatible with standard CMOS/TTL logic; no level-shifting required) |
Pinout & Package
SOT-23-5 (DBV) package: 1.60 mm × 2.90 mm body size, 0.95 mm height, gull-wing leads, RoHS-compliant matte tin (SN) finish, MSL Level-1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - REF | Reference node | Must remain unconnected; sensitive to noise and capacitive loading - requires isolation in layout |
| 2 - GND | Ground reference | Return path for load current and internal circuitry; low-impedance connection essential for noise immunity |
| 3 - EN | Enable control input | Analog input; pulled high to VIN for normal operation, grounded for shutdown (ISS < 2 µA) |
| 4 - VIN | Positive supply input | Accepts 3.12 V to 12 V; minimum headroom defined by dropout voltage at load current |
| 5 - VOUT | Regulated reference output | 3.0 V ±0.2%, capable of sourcing/sinking ±5 mA; requires 0.022–0.047 µF ceramic output capacitor for stability |
Key Features
| Feature | Design Value |
|---|---|
| Low Dropout Operation | 120 mV typical at 1 mA enables use with ultra-low-input-voltage sources like depleted batteries or LDO outputs |
| Enable-Controlled Power-Down | Reduces supply current to <2 µA - eliminates need for external MOSFET switches in duty-cycled systems |
| High Output Accuracy | ±0.2% initial tolerance (A-grade) reduces system-level calibration steps and improves absolute measurement repeatability |
| Wide Supply Range | Operates from VIN = VOUT + 120 mV up to 12 V - supports diverse power architectures without redesign |
| Robust Output Drive | ±5 mA sink/source capability allows direct interfacing to ADC reference pins, op-amp bias networks, and DAC buffers |
Applications
| Portable Data Loggers | Industrial Sensor Transmitters |
|---|---|
|
Use Scenario: Battery-powered environmental monitors logging temperature, humidity, and pressure over multi-year deployments. IC Role / Device Role / Timing Role: Provides stable 3.0 V reference for 16-bit SAR ADCs and low-power microcontroller analog peripherals. Use Value: 50 ppm/°C tempco and 160 µA quiescent current extend usable battery life while maintaining ±0.1% measurement accuracy across −25°C to +70°C field conditions. |
Use Scenario: 4–20 mA loop-powered transmitters converting RTD or strain-gauge signals in factory automation. IC Role / Device Role / Timing Role: Supplies precision excitation voltage and ADC reference in isolated analog front-ends. Use Value: ±5 mA drive strength supports ratiometric bridge sensing; enable pin allows dynamic power gating during sleep cycles without compromising reference stability. |
| Medical Wearable Sensors | Test & Measurement Equipment |
|
Use Scenario: ECG/PPG modules requiring low-noise, low-drift voltage references for analog signal conditioning. IC Role / Device Role / Timing Role: Delivers clean 3.0 V bias to instrumentation amplifiers and anti-alias filters before digitization. Use Value: 36 µVPP (10 Hz–10 kHz) output noise and thermal hysteresis ≤0.5 mV/V ensure sub-µV baseline stability critical for biopotential detection. |
Use Scenario: Benchtop multimeters and calibrators needing traceable, low-drift reference sources for DC voltage measurements. IC Role / Device Role / Timing Role: Serves as primary reference in auto-ranging voltage measurement paths with programmable gain stages. Use Value: 0.2% initial accuracy and 100 ppm long-term stability (1000 hrs) reduce annual recalibration frequency and improve measurement confidence. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REF3030AIDBVR | 3.0 V, ±0.2%, 50 ppm/°C, 50 µA IQ, no enable pin, SOT-23-5 | Lacks power-down mode; lower quiescent current but no shutdown control | Preferred when ultra-low IQ dominates over dynamic power management needs |
| ADR3430ARJZ-R7 | 3.0 V, ±0.1%, 10 ppm/°C, 120 µA IQ, no enable, SOT-23-5 | Higher accuracy and lower tempco, but no enable and higher cost | Selected when metrology-grade stability is required and power-down is unnecessary |
Compared with REF3030AIDBVR and ADR3430ARJZ-R7, the LM4120AIM5-3.0/NOPB uniquely balances A-grade accuracy, enable-controlled shutdown, and robust ±5 mA drive - making it optimal for battery-gated, sensor-node applications where both precision and dynamic power control are mandatory.
Availability
LM4120AIM5-3.0/NOPB is available at Aetrix Electronics and suitable for portable instrumentation, industrial sensor transmitters, and medical wearable designs requiring stable component supply with full RoHS compliance and TI-authorized traceability.
Supply support for LM4120AIM5-3.0/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, embedded processing, and connectivity technologies with over 50 years of innovation in precision analog ICs.
The LM4120 series was designed specifically for micropower, low-dropout voltage reference applications in battery-operated and space-constrained systems - emphasizing accuracy, thermal stability, and enable-controlled energy efficiency.
FAQ
What is the maximum input voltage for LM4120AIM5-3.0/NOPB?
The LM4120AIM5-3.0/NOPB supports a maximum input voltage of 12 V, as specified in its Absolute Maximum Ratings. Operating above this voltage risks permanent damage. For reliable long-term operation, VIN should remain within the Recommended Operating Conditions range of (VOUT + 120 mV) to 12 V - i.e., 3.12 V to 12 V for the LM4120AIM5-3.0/NOPB.
Does LM4120AIM5-3.0/NOPB require an external output capacitor?
Yes, the LM4120AIM5-3.0/NOPB requires a minimum 0.022 µF ceramic output capacitor for loop stability, with recommended values between 0.022 µF and 0.047 µF. Larger capacitors (up to 1 µF) may be used with tantalum types, but require additional design validation per TI's Application Note. The LM4120AIM5-3.0/NOPB will not remain stable without proper output capacitance.
What is the function of the REF pin on LM4120AIM5-3.0/NOPB?
The REF pin on the LM4120AIM5-3.0/NOPB is an internal reference node that must remain unconnected in all applications. It is highly sensitive to noise and capacitive loading; connecting it to any external component degrades accuracy and stability. PCB layout must isolate this pin using guard traces or clearance - a requirement explicitly stated in the LM4120AIM5-3.0/NOPB datasheet.
Can LM4120AIM5-3.0/NOPB sink current, and how much?
Yes, the LM4120AIM5-3.0/NOPB can both source and sink up to ±5 mA, as confirmed in its Features list and Electrical Characteristics table. This bidirectional capability allows it to actively regulate loads that pull current from or push current into the reference output - such as op-amp bias networks or switched-capacitor circuits - without external components.
Is LM4120AIM5-3.0/NOPB qualified for automotive applications?
The LM4120AIM5-3.0/NOPB is rated for the industrial temperature range (−40°C to +85°C) and is not AEC-Q200 qualified. While its extended temperature specifications cover −40°C to +125°C for parameters like tempco, TI does not certify this variant for automotive use. For automotive applications, designers should consult TI's automotive-grade alternatives or contact TI directly for qualification status of specific variants.
LM4120AIM5-3.0/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):
- 3V
- Voltage - Output (Max):
- -
- Current - Output:
- 5 mA
- Tolerance:
- ±0.2%
- 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
LM4120AIM5-3.0/NOPB FAQ
1.How can I place an order for LM4120AIM5-3.0/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4120AIM5-3.0/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 LM4120AIM5-3.0/NOPB reliable?
The price and inventory of LM4120AIM5-3.0/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4120AIM5-3.0/NOPB is usually 5 days.
3.What payment methods are accepted for LM4120AIM5-3.0/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4120AIM5-3.0/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4120AIM5-3.0/NOPB?
LM4120AIM5-3.0/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4120AIM5-3.0/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 LM4120AIM5-3.0/NOPB?
For technical support, including LM4120AIM5-3.0/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4120AIM5-3.0/NOPB requirements.
6.How does Aetrix verify that LM4120AIM5-3.0/NOPB is sourced from the original manufacturer or authorized distributors?
All LM4120AIM5-3.0/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 LM4120AIM5-3.0/NOPB meets industry standards.
7.What is the process for return or replacement of LM4120AIM5-3.0/NOPB?
All LM4120AIM5-3.0/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM4120AIM5-3.0/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 LM4120AIM5-3.0/NOPB part is unused and in its original packaging.
Return procedure for LM4120AIM5-3.0/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM4120AIM5-3.0/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…
