My Inquiry
My Account
Analog Devices Inc./Maxim Integrated LM4041DIX3-1.2-T
- Part No.:
- LM4041DIX3-1.2-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- SC-70, SOT-323
- Datasheet:
-
LM4041DIX3-1.2-T.pdf
- Description:
- IC VREF SHUNT 1% SC70-3
- Quantity:
- Payment:
- Shipping:
Inventory:3,093
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LM4041DIX3-1.2-T from Maxim Integrated is a precision 1.225V two-terminal shunt voltage reference in SC70-3 package, featuring 1.0% initial accuracy, 150ppm/°C max temperature coefficient, 60µA–12mA operating current range, and guaranteed operation from –40°C to +85°C. It serves as a stable reference in portable battery-powered systems where space and low quiescent current are critical.
For engineers reviewing the LM4041DIX3-1.2-T datasheet, LM4041DIX3-1.2-T pinout, LM4041DIX3-1.2-T application, or LM4041DIX3-1.2-T equivalent, key selection factors include its fixed 1.225V reverse breakdown voltage, no-output-capacitor requirement, tolerance of capacitive loads, and SC70-3 footprint compatibility with high-density PCB layouts.
Technical Context
The LM4041DIX3-1.2-T implements a bandgap-based shunt reference architecture that maintains a stable 1.225V across its terminals when reverse-biased between 60µA and 12mA. Its BiCMOS process enables low dynamic impedance (≤2.0Ω) and low wideband noise (20µVRMS, 10Hz–10kHz), supporting precision analog sensing and ADC reference applications.
Unlike series references, it operates without input-to-output voltage headroom constraints and requires only a single external source resistor for biasing. Pin 3 is unconnected or tied to pin 2, simplifying layout while maintaining stability across capacitive loads up to 1µF and full temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 1.225V fixed reverse breakdown voltage - defines precise reference level for ADCs, DACs, and comparators. |
| Initial Accuracy | ±1.0% at +25°C - ensures reference error ≤±12.25mV before temperature or load effects. |
| Tempco | 150ppm/°C max - contributes ≤±9.75mV drift over –40°C to +85°C (ΔT = 125°C). |
| Operating Current | 60µA to 12mA - supports ultra-low-power sensor nodes and high-current precision circuits without external regulation. |
| Noise (10Hz–10kHz) | 20µVRMS - enables sub-16-bit ADC performance without additional filtering. |
| Dynamic Impedance | ≤2.0Ω at 1mA - minimizes output voltage shift under fast load transients. |
| Temperature Range | –40°C to +85°C - qualified for industrial and consumer portable equipment environments. |
Pinout & Package
LM4041DIX3-1.2-T is housed in a 3-pin SC70-3 surface-mount package (1.8mm × 1.8mm), 50% smaller than SOT23-3, with exposed pad not electrically connected. Thermal resistance θJA = 460°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (+) | Anode / Positive terminal | Connected to system ground or low-impedance return path; forms cathode-to-anode reverse bias path. |
| 2 (−) | Cathode / Negative terminal | Reference output node; voltage measured between pin 2 and pin 1 is 1.225V under regulation. |
| 3 (N.C.) | No-connect terminal | Must be left floating or shorted to pin 2; no internal connection - avoids parasitic coupling or ESD path misrouting. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-small SC70-3 footprint | Enables placement in <1.5mm² board area - critical for compact wearables and IoT sensors. |
| No output capacitor required | Eliminates BOM cost and layout risk associated with capacitor selection, aging, and ESR sensitivity. |
| Capacitive load tolerance | Stable with any output capacitance (0–1µF), simplifying interface to switched-capacitor circuits and SAR ADC sample networks. |
| Low 20µVRMS noise | Supports 16-bit+ resolution in precision data acquisition without post-filtering or oversampling. |
| Wide 60µA–12mA shunt current range | Permits flexible biasing from microamp-level battery monitoring to 12-bit DAC reference currents. |
Applications
| Battery Voltage Monitoring | Portable Medical Sensors |
|---|---|
Use Scenario: Real-time Li-ion cell voltage tracking in Bluetooth earbuds with 3.0–4.2V supply range. IC Role / Device Role / Timing Role: Shunt reference providing stable 1.225V for ADC input scaling and low-battery threshold detection. Use Value: Enables ±10mV absolute voltage measurement accuracy over –20°C to +70°C ambient, meeting IEC 62366 usability requirements. | Use Scenario: Single-supply ECG front-end in disposable patch monitors powered by coin-cell batteries. IC Role / Device Role / Timing Role: Precision reference for instrumentation amplifier gain-setting and ADC reference rail. Use Value: Delivers <15ppm/°C effective drift over clinical operating range (15°C–40°C), reducing calibration frequency. |
| Industrial Data Loggers | Smart Home Sensor Nodes |
Use Scenario: Temperature/humidity data acquisition in DIN-rail mounted controllers with 12–24V DC input. IC Role / Device Role / Timing Role: Stable reference for 12-bit sigma-delta ADC measuring 4–20mA loop signals via precision shunt. Use Value: Maintains ±0.5% total reference error over –40°C to +85°C, eliminating need for on-board temperature compensation. | Use Scenario: Multi-sensor hub (motion, temp, humidity) in battery-operated smart thermostat. IC Role / Device Role / Timing Role: Shared reference for analog sensor signal conditioning and microcontroller ADC. Use Value: Reduces component count by replacing discrete Zener + op-amp reference with single 1.225V node, saving >0.8mm² PCB area. |
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 output (min 1.24V), 0.5% initial accuracy, 100ppm/°C tempco, SOT23-3 package | Requires external resistors to set 1.225V; higher minimum cathode current (80µA) | Choose when adjustable output or tighter tempco is needed, accepting added resistor network and larger footprint. |
| MAX6008AEUR+T | 1.25V output, 0.2% initial accuracy, 50ppm/°C tempco, SC70-3 package, 10µA–20mA range | Higher accuracy and lower tempco but 25mV higher nominal voltage; not drop-in for 1.225V designs | Choose when system tolerances allow 1.25V and long-term stability (<50ppm/1000h) is prioritized over exact 1.225V match. |
Compared with TLVH431ACDBVR and MAX6008AEUR+T, the LM4041DIX3-1.2-T provides exact 1.225V output in the smallest SC70-3 footprint with no external components, making it optimal for space-constrained, fixed-voltage reference use cases where ±1% accuracy suffices.
Availability
LM4041DIX3-1.2-T is available at Aetrix Electronics and suitable for portable medical sensors, industrial data loggers, and smart home sensor nodes requiring stable component supply across extended production cycles.
Supply support for LM4041DIX3-1.2-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-sensitive systems requiring stable 1.225V references without external capacitors or trimming.
FAQ
What is the exact output voltage tolerance of LM4041DIX3-1.2-T at +25°C?
The LM4041DIX3-1.2-T has a reverse breakdown voltage of 1.225V with ±1.0% initial accuracy at +25°C, corresponding to a tolerance range of 1.2128V to 1.2373V per the official Maxim datasheet. This specification is laser-trimmed and guaranteed for all units shipped.
Does LM4041DIX3-1.2-T require an external output capacitor for stability?
No, the LM4041DIX3-1.2-T does not require an external output capacitor. Its internal design ensures stability with any capacitive load, including 0–1µF, eliminating BOM cost and layout complexity. This behavior is verified across the full –40°C to +85°C temperature range and 60µA–12mA operating current.
What is the maximum operating temperature range for LM4041DIX3-1.2-T?
The LM4041DIX3-1.2-T is rated for operation from –40°C to +85°C. This is indicated by the "I" suffix in the part number (LM4041DIX3-1.2-T) and confirmed in the Ordering Information table. The extended-range "E" variant (e.g., LM4041DEX3-1.2-T) supports –40°C to +125°C.
Can pin 3 of LM4041DIX3-1.2-T be left unconnected?
Yes, pin 3 of the LM4041DIX3-1.2-T is designated N.C. (no connect) and must be left floating or connected directly to pin 2 (cathode). It has no internal connection and serves only as a mechanical anchor; connecting it elsewhere may compromise ESD robustness or thermal performance.
What is the minimum shunt current required for regulation in LM4041DIX3-1.2-T?
The LM4041DIX3-1.2-T requires a minimum shunt current of 60µA to maintain regulation, as specified in the Electrical Characteristics table. Below this value, reverse breakdown voltage deviates beyond tolerance; design must ensure IR ≥ 60µA across all operating conditions including worst-case temperature and supply voltage.
LM4041DIX3-1.2-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- SC-70, SOT-323
- 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:
- ±1%
- Temperature Coefficient:
- 150ppm/°C
- Noise - 0.1Hz to 10Hz:
- -
- Noise - 10Hz to 10kHz:
- 20µVrms
- Voltage - Input:
- -
- Current - Supply:
- -
- Current - Cathode:
- 65 µA
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-3
LM4041DIX3-1.2-T FAQ
1.How can I place an order for LM4041DIX3-1.2-T through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4041DIX3-1.2-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 LM4041DIX3-1.2-T reliable?
The price and inventory of LM4041DIX3-1.2-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4041DIX3-1.2-T is usually 5 days.
3.What payment methods are accepted for LM4041DIX3-1.2-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4041DIX3-1.2-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4041DIX3-1.2-T?
LM4041DIX3-1.2-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4041DIX3-1.2-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 LM4041DIX3-1.2-T?
For technical support, including LM4041DIX3-1.2-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4041DIX3-1.2-T requirements.
6.How does Aetrix verify that LM4041DIX3-1.2-T is sourced from the original manufacturer or authorized distributors?
All LM4041DIX3-1.2-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 LM4041DIX3-1.2-T meets industry standards.
7.What is the process for return or replacement of LM4041DIX3-1.2-T?
All LM4041DIX3-1.2-T units undergo pre-shipment inspection (PSI). If there is an issue with LM4041DIX3-1.2-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 LM4041DIX3-1.2-T part is unused and in its original packaging.
Return procedure for LM4041DIX3-1.2-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM4041DIX3-1.2-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…
