My Inquiry
My Account
Texas Instruments LM4041DQDBZRG4
- Part No.:
- LM4041DQDBZRG4
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
LM4041DQDBZRG4.pdf
- Description:
- IC VREF SHUNT ADJ 1% SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:3,050
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LM4041DQDBZRG4 from Texas Instruments is a precision micropower shunt voltage reference in SOT-23-3 (DBZ) package, delivering a fixed 1.225 V output with ±1.0% initial tolerance and 150 ppm/°C max temperature coefficient over –40°C to +125°C. It operates from 45 μA to 12 mA cathode current, exhibits 20 μVRMS wideband noise, and requires no output capacitor-enabling use in battery-powered instrumentation and automotive power-supply monitors.
For engineers reviewing the LM4041DQDBZRG4 datasheet, LM4041DQDBZRG4 pinout, LM4041DQDBZRG4 application, or LM4041DQDBZRG4 equivalent, key selection criteria include its Q-grade extended-temperature qualification, low dynamic impedance (≤2 Ω), stable operation with all capacitive loads, and compatibility with high-EMI environments via optional anode tie of NC pin.
Technical Context
The LM4041DQDBZRG4 implements a Zener-zap trimmed shunt reference architecture with internal bandgap-derived reference core, enabling tight initial accuracy and low drift across temperature. Its feedback (FB) pin is absent in fixed-output variants like this one-only present in adjustable versions-so the DBZ package contains only Cathode, Anode, and NC terminals.
Designed for direct replacement of legacy two-terminal references, it achieves stability without external capacitance by maintaining low dynamic impedance (<2 Ω at 1 mA) and high PSRR (>60 dB at 1 kHz). The D-grade tolerance (±1.0%) and Q-temperature rating (–40°C to +125°C) target cost-sensitive industrial and automotive applications where long-term drift (120 ppm after 1000 h) and ESD robustness (±2 kV HBM) are critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.225 V nominal; enables precise ADC/DAC biasing and sensor excitation without external resistors. |
| Initial Tolerance | ±1.0% max at 25°C (D grade); supports cost-optimized designs where tighter tolerances are unnecessary. |
| Temp Coefficient | 150 ppm/°C max over –40°C to +125°C; ensures <±12 mV drift across full operating range. |
| Cathode Current Range | 45 μA to 12 mA typical; allows ultra-low-power sleep modes and high-current regulation in same device. |
| Output Noise | 20 μVRMS (10 Hz–10 kHz); suitable for 16-bit+ data acquisition without added filtering. |
| Dynamic Impedance | ≤2 Ω at 1 mA; maintains output regulation under fast load transients in power-monitor circuits. |
| ESD Rating | ±2000 V HBM; withstands handling and board-level ESD events without derating or protection diodes. |
Pinout & Package
SOT-23-3 (DBZ) package: compact 2.92 mm × 1.3 mm surface-mount outline with gull-wing leads, optimized for automated assembly and space-constrained PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (Pin 1) | Shunt current sink / output node | Connects to supply rail via series resistor; sets regulated voltage at this node relative to Anode. |
| Anode (Pin 2) | Reference ground reference | Typically tied to system ground; defines 0 V reference for output voltage measurement. |
| NC (Pin 3) | No-connect terminal | Must float or connect to Anode per TI recommendation in high-EMI environments (e.g., near switching regulators). |
Key Features
| Feature | Design Value |
|---|---|
| Capacitor-free stability | Operates stably with any capacitive load (0–∞ F); eliminates BOM cost and layout risk of output capacitor. |
| Ultra-low quiescent current | 45 μA minimum cathode current enables >10-year battery life in always-on monitoring nodes. |
| Extended temperature range | Qualified from –40°C to +125°C (Q grade); supports under-hood automotive and industrial control applications. |
| Low dynamic impedance | ≤2 Ω at 1 mA ensures <2 mV output shift during 1 mA load steps-critical for precision feedback loops. |
| High ESD immunity | ±2000 V HBM rating reduces need for external protection in production test and field deployment. |
Applications
| Portable Data Loggers | Automotive Battery Monitors |
|---|---|
|
Use Scenario: Continuous voltage logging in remote environmental sensors powered by coin cells. IC Role / Device Role / Timing Role: Shunt reference providing stable 1.225 V reference for 16-bit SAR ADC sampling. Use Value: 45 μA min operating current extends 200 mAh CR2032 battery life beyond 5 years; 20 μVRMS noise avoids post-processing filtering. |
Use Scenario: Real-time 12 V battery voltage monitoring in engine control units (ECUs). IC Role / Device Role / Timing Role: Precision shunt reference in resistive divider network feeding microcontroller ADC input. Use Value: 150 ppm/°C tempco ensures <±10 mV error over –40°C to +125°C ambient; Q-grade qualification guarantees reliability under hood. |
| Industrial Process Transmitters | Energy Meter Reference |
|
Use Scenario: 4–20 mA loop-powered pressure transmitter with onboard analog front-end. IC Role / Device Role / Timing Role: Fixed-voltage reference for DAC output scaling and sensor bridge excitation. Use Value: ±1.0% tolerance meets Class 0.5 accuracy requirements; no output cap simplifies conformal coating and reduces failure modes. |
Use Scenario: Polyphase electricity meter requiring metrology-grade voltage reference for ADC and energy calculation. IC Role / Device Role / Timing Role: Primary shunt reference establishing calibration baseline for isolated sigma-delta ADCs. Use Value: 120 ppm long-term drift after 1000 h ensures 10-year calibration stability; low noise preserves ENOB in 24-bit measurements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TL431CDBZR | Adjustable 2.5 V reference; higher 2% initial tolerance; 50 μA min cathode current; requires external resistors for 1.225 V. | Used where programmability or higher output voltage is needed; not drop-in for fixed 1.225 V designs. | Select TL431CDBZR only if adjustable output or higher voltage (≥2.495 V) is required; adds design complexity and resistor tolerance error. |
| MAX6008BAUT12+T | Fixed 1.225 V; ±0.2% initial tolerance; 100 ppm/°C tempco; SOT-23-3; 60 μA min cathode current. | Higher accuracy and lower drift, but higher quiescent current limits ultra-low-power use cases. | Choose MAX6008BAUT12+T when ±0.2% tolerance and 100 ppm/°C are mandatory; accept 33% higher min current vs. LM4041DQDBZRG4. |
Compared with TL431CDBZR and MAX6008BAUT12+T, the LM4041DQDBZRG4 uniquely balances extended-temperature operation, ultra-low 45 μA startup current, and fixed 1.225 V output in a cost-optimized D-grade variant-making it optimal for battery-powered industrial and automotive sensing where absolute precision is secondary to longevity and ruggedness.
Availability
LM4041DQDBZRG4 is available at Aetrix Electronics and suitable for portable data loggers, automotive battery monitors, industrial process transmitters, and energy meter reference circuits requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for LM4041DQDBZRG4 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 and automotive-qualified components.
The LM4041 product line delivers micropower shunt references optimized for space-constrained, battery-operated, and high-reliability systems-designed specifically for instrumentation, power monitoring, and automotive subsystems demanding stable voltage references across harsh thermal environments.
FAQ
What is the operating temperature range for LM4041DQDBZRG4?
The LM4041DQDBZRG4 is qualified for operation from –40°C to +125°C (Q-grade), making it suitable for under-hood automotive applications and industrial environments where ambient temperatures exceed standard commercial ranges. This rating is confirmed in Section 5.6 and 5.9 of the official TI datasheet SLCS146H.
Does LM4041DQDBZRG4 require an output capacitor?
No, the LM4041DQDBZRG4 does not require an output capacitor for stability-it is designed to remain stable with all capacitive loads, including 0 F. This is explicitly stated in Features and Section 7.1 of the datasheet, eliminating BOM cost and layout constraints associated with capacitor selection and placement.
What is the minimum cathode current needed for LM4041DQDBZRG4 to regulate properly?
The LM4041DQDBZRG4 requires a minimum cathode current of 45 μA (typical) to maintain regulation, as specified in Sections 5.4–5.6 of the datasheet. Below this threshold, output voltage may deviate outside tolerance; design must ensure worst-case current (e.g., lowest supply voltage, highest load) remains ≥45 μA.
How is the NC pin (Pin 3) used in LM4041DQDBZRG4?
In the LM4041DQDBZRG4 SOT-23-3 (DBZ) package, Pin 3 is designated NC (no connect) and must either be left floating or tied to the Anode (Pin 2), especially in high-EMI environments such as near switching regulators or transformers-as recommended in Section 4 and Figure 4-1 of the TI datasheet.
What is the long-term stability specification for LM4041DQDBZRG4?
The LM4041DQDBZRG4 exhibits 120 ppm maximum long-term stability after 1000 hours of operation at 25°C and 100 μA cathode current, as documented in Sections 5.4–5.9 of the datasheet. This value reflects parametric drift under accelerated aging conditions and supports multi-year calibration intervals in metering and instrumentation.
LM4041DQDBZRG4 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:
- Adjustable
- Voltage - Output (Min/Fixed):
- 1.233V
- Voltage - Output (Max):
- 10 V
- 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:
- 80 µA
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
LM4041DQDBZRG4 FAQ
1.How can I place an order for LM4041DQDBZRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4041DQDBZRG4 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 LM4041DQDBZRG4 reliable?
The price and inventory of LM4041DQDBZRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4041DQDBZRG4 is usually 5 days.
3.What payment methods are accepted for LM4041DQDBZRG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4041DQDBZRG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4041DQDBZRG4?
LM4041DQDBZRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4041DQDBZRG4 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 LM4041DQDBZRG4?
For technical support, including LM4041DQDBZRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4041DQDBZRG4 requirements.
6.How does Aetrix verify that LM4041DQDBZRG4 is sourced from the original manufacturer or authorized distributors?
All LM4041DQDBZRG4 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 LM4041DQDBZRG4 meets industry standards.
7.What is the process for return or replacement of LM4041DQDBZRG4?
All LM4041DQDBZRG4 units undergo pre-shipment inspection (PSI). If there is an issue with LM4041DQDBZRG4, 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 LM4041DQDBZRG4 part is unused and in its original packaging.
Return procedure for LM4041DQDBZRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM4041DQDBZRG4 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…
