My Inquiry
My Account
Analog Devices Inc./Maxim Integrated LM4041AIM3-1.2-T
- Part No.:
- LM4041AIM3-1.2-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
LM4041AIM3-1.2-T.pdf
- Description:
- IC VREF SHUNT 0.1% SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:2,194
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LM4041AIM3-1.2-T from Maxim Integrated is a precision 1.225V two-terminal shunt voltage reference in SOT23-3 package, featuring 0.1% initial accuracy, 100ppm/°C max temperature coefficient, and 60µA–12mA operating current range. It serves as a stable voltage reference in battery-powered instrumentation and industrial sensor signal conditioning circuits.
For engineers reviewing the LM4041AIM3-1.2-T datasheet, LM4041AIM3-1.2-T pinout, LM4041AIM3-1.2-T application, or LM4041AIM3-1.2-T equivalent, key selection criteria include guaranteed -40°C to +85°C operation, no external capacitor requirement, low 20µVRMS noise (10Hz–10kHz), and SC70/SOT23 package compatibility for space-constrained PCB layouts.
Technical Context
The LM4041AIM3-1.2-T implements a bandgap-based shunt reference architecture with laser-trimmed resistors for precision. Its fixed 1.225V reverse breakdown voltage is maintained across 60µA–12mA cathode-to-anode current, with dynamic impedance ≤1.5Ω at 1mA and 120Hz.
It operates without output capacitance stabilization and tolerates arbitrary capacitive loads. Temperature drift is bounded by ±100ppm/°C over -40°C to +85°C, and long-term stability is 120ppm after 1000 hours at 100µA bias.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 1.225V ±1.2mV at +25°C - ensures precise ADC/DAC reference alignment in 12-bit+ systems |
| Initial Accuracy | ±0.1% (max) - enables single-point calibration in portable medical sensors |
| Temp Coefficient | ≤100ppm/°C - guarantees <±8.5mV drift over full -40°C to +85°C range |
| Operating Current | 60µA to 12mA - supports ultra-low-power sleep modes and high-current active regulation |
| Dynamic Impedance | ≤1.5Ω at 1mA - minimizes load-induced voltage shift in varying current conditions |
| Output Noise | 20µVRMS (10Hz–10kHz) - preserves SNR in precision analog front-ends |
| Long-Term Stability | 120ppm (1000h) - reduces recalibration frequency in field-deployed equipment |
Pinout & Package
LM4041AIM3-1.2-T uses the 3-pin SOT23-3 surface-mount package (1.8mm × 2.9mm footprint), rated for -40°C to +85°C operation and RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (+) | Anode / Positive Terminal | Connects to system ground or low-impedance return path; forms cathode-to-anode bias loop |
| 2 (−) | Cathode / Negative Terminal | Reference output node; sinks shunt current to maintain 1.225V across load |
| 3 (N.C.) | No Connect | Must be left floating or tied to Pin 2; not internally connected - avoids parasitic leakage paths |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-small SOT23-3 package | Enables placement in <2mm² board area - critical for wearable biosensors and compact IoT nodes |
| No output capacitor required | Eliminates BOM cost and layout risk from capacitor selection, aging, and ESR variation |
| Stable with any capacitive load | Supports direct connection to ADC input caps or long PCB traces without oscillation |
| Low 20µVRMS broadband noise | Meets noise floor requirements for 16-bit SAR ADCs without additional filtering |
| Laser-trimmed initial accuracy | Delivers 0.1% tolerance without factory calibration - reduces test time and firmware overhead |
Applications
| Portable Medical Sensors | Battery-Powered Data Loggers |
|---|---|
Use Scenario: Continuous glucose monitor (CGM) with microamp-level bias current and 12-bit ADC sampling. IC Role / Device Role / Timing Role: Shunt voltage reference providing stable 1.225V reference for analog front-end gain calibration and ADC conversion. Use Value: Enables <±1 LSB error over temperature with no external capacitor, reducing component count and board area by 30% vs. SOT23-5 alternatives. | Use Scenario: Environmental sensor node logging temperature/humidity every 10 seconds on coin-cell power. IC Role / Device Role / Timing Role: Precision reference for low-power op-amp signal conditioning and ADC reference rail. Use Value: 60µA minimum operating current extends battery life beyond 5 years; 0.1% accuracy eliminates field recalibration. |
| Industrial 4–20mA Transmitters | Notebook System Power Monitoring |
Use Scenario: Loop-powered transmitter with HART modulation requiring stable reference under varying loop voltage (12–42V). IC Role / Device Role / Timing Role: Shunt reference establishing accurate current-sense threshold and DAC reference for 4–20mA output stage. Use Value: 12mA max shunt current capability supports full-scale output while maintaining <±0.2% total error across -40°C to +85°C. | Use Scenario: Real-time battery voltage and charge current monitoring in ultrabook platforms. IC Role / Device Role / Timing Role: Reference source for fuel-gauge IC analog inputs and system supervisor ADC channels. Use Value: 20µVRMS noise ensures <0.5% measurement uncertainty in 10mV resolution battery sensing circuits. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLVH431ACDBVR | 2.5V adjustable reference; requires external resistor divider; 0.5% initial accuracy; 90ppm/°C tempco | Not drop-in: needs redesign of feedback network; higher reference voltage limits low-voltage rail use | Select when 2.5V reference is acceptable and board space allows resistor pair; avoid for 1.2V–1.8V systems |
| ADR3412ARJZ-R7 | 1.2V fixed reference; 0.1% accuracy; 30ppm/°C tempco; 3-pin SOT23; 100µA–10mA range | Lower tempco improves drift performance but narrower current range limits high-load flexibility | Prefer for ultra-stable applications below 85°C; verify 10mA max current suffices for target load |
Compared with TLVH431ACDBVR and ADR3412ARJZ-R7, the LM4041AIM3-1.2-T offers the only 1.225V fixed shunt reference with 0.1% accuracy, 60µA–12mA range, and guaranteed stability without external capacitance - making it optimal for space- and power-constrained 1.2V–1.8V embedded systems.
Availability
LM4041AIM3-1.2-T is available at Aetrix Electronics and suitable for portable medical sensors, battery-powered data loggers, and industrial 4–20mA transmitters requiring stable component supply and consistent parametric performance across production batches.
Supply support for LM4041AIM3-1.2-T 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
Maxim Integrated (now part of Analog Devices) designs precision analog, mixed-signal, and power management ICs for industrial, automotive, and computing applications.
The LM4041 product line delivers micropower shunt voltage references optimized for space-constrained, battery-operated systems demanding high initial accuracy and wide operating current range without external compensation.
FAQ
What is the exact output voltage tolerance of LM4041AIM3-1.2-T at +25°C?
The LM4041AIM3-1.2-T has a reverse breakdown voltage of 1.225V with ±1.2mV (±0.1%) tolerance at +25°C, as specified in the Electrical Characteristics table for the 'A' grade. This tight tolerance is achieved via laser trimming and is guaranteed across all units without binning or post-assembly calibration.
Does LM4041AIM3-1.2-T require an external capacitor for stability?
No, the LM4041AIM3-1.2-T does not require an external output capacitor for stability. Its internal design ensures unconditional stability with any capacitive load, including direct connection to ADC input capacitors or long PCB traces - eliminating capacitor-related BOM cost, layout constraints, and aging effects.
What is the minimum operating current for LM4041AIM3-1.2-T?
The LM4041AIM3-1.2-T requires a minimum shunt current of 60µA to maintain regulation and specified accuracy. Below this level, the device exits its reverse breakdown region and output voltage deviates significantly from 1.225V - critical for ultra-low-power sleep mode design in battery-powered systems.
Can LM4041AIM3-1.2-T operate across the full industrial temperature range?
The LM4041AIM3-1.2-T is rated for -40°C to +85°C operation only. For extended temperature operation up to +125°C, select the LM4041AEM3-1.2+T variant instead - the 'I' suffix in LM4041AIM3-1.2-T explicitly denotes the industrial (not extended) temperature grade.
What is the function of Pin 3 on LM4041AIM3-1.2-T?
Pin 3 of the LM4041AIM3-1.2-T is labeled N.C. (No Connect) and must be left floating or connected to Pin 2 (cathode). It is not internally bonded and serves no electrical function - connecting it elsewhere may introduce leakage paths or ESD vulnerability.
LM4041AIM3-1.2-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- 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):
- 1.225V
- Voltage - Output (Max):
- -
- Current - Output:
- 12 mA
- Tolerance:
- ±0.1%
- Temperature Coefficient:
- 100ppm/°C
- Noise - 0.1Hz to 10Hz:
- -
- Noise - 10Hz to 10kHz:
- 20µVrms
- Voltage - Input:
- -
- Current - Supply:
- -
- Current - Cathode:
- 60 µA
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
LM4041AIM3-1.2-T FAQ
1.How can I place an order for LM4041AIM3-1.2-T through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4041AIM3-1.2-T 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 LM4041AIM3-1.2-T reliable?
The price and inventory of LM4041AIM3-1.2-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4041AIM3-1.2-T is usually 5 days.
3.What payment methods are accepted for LM4041AIM3-1.2-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4041AIM3-1.2-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4041AIM3-1.2-T?
LM4041AIM3-1.2-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4041AIM3-1.2-T 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 LM4041AIM3-1.2-T?
For technical support, including LM4041AIM3-1.2-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4041AIM3-1.2-T requirements.
6.How does Aetrix verify that LM4041AIM3-1.2-T is sourced from the original manufacturer or authorized distributors?
All LM4041AIM3-1.2-T 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 LM4041AIM3-1.2-T meets industry standards.
7.What is the process for return or replacement of LM4041AIM3-1.2-T?
All LM4041AIM3-1.2-T units undergo pre-shipment inspection (PSI). If there is an issue with LM4041AIM3-1.2-T, 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 LM4041AIM3-1.2-T part is unused and in its original packaging.
Return procedure for LM4041AIM3-1.2-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM4041AIM3-1.2-T 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…
