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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Voltage Reference

Diodes Incorporated ZXRE4041ERSTOA

Name: ZXRE4041ERSTOA
Brand: Diodes Incorporated
SKU: ZXRE4041ERSTOA
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: ZXRE4041ERSTOA

Manufacturer:: Diodes Incorporated

Category:: Voltage Reference

Package:: E-Line-3

Datasheet:: ZXRE4041ERSTOA.pdf

Description:: IC VREF SHUNT 2% E-LINE

Quantity:: RFQ Add To RFQ list

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Inventory:3,323

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Product details

Overview

ZXRE4041ERSTOA from Diodes Incorporated is a precision micropower bandgap voltage reference delivering 1.225 V ±0.5% (C grade) with 20 ppm/°C typical temperature coefficient, 30 µA minimum operating current, and unconditional stability into capacitive loads - used in battery-powered instrumentation and portable A/D converters.

For engineers reviewing the ZXRE4041ERSTOA datasheet, ZXRE4041ERSTOA pinout, ZXRE4041ERSTOA application, or ZXRE4041ERSTOA equivalent, key selection criteria include knee current (30 µA), reverse dynamic impedance (0.2–0.6 Ω), wideband noise (60 µV_rms), tolerance grade, and SOT23-3 compatibility with LM4041 footprints.

Technical Context

The ZXRE4041ERSTOA operates as a shunt-mode two-terminal voltage reference, requiring an external current source and load resistor to establish bias. It functions across 30 µA to 12 mA, maintaining regulation without oscillation even with >1 µF capacitive loading at the cathode.

Its bandgap core achieves low drift via curvature compensation, yielding 20 ppm/°C typical TC over –40°C to +125°C and <100 ppm/°C max TC. Reverse breakdown voltage variation is specified as ±6 mV (1.219 V to 1.231 V) at 100 µA for C-grade units.

Key Specifications

Parameter	Value and Actual Design Meaning
Reference Voltage	1.225 V ±0.5% (C grade) - sets precise analog bias point for ADCs and sensor signal chains
Temp Coefficient	20 ppm/°C typical - ensures ≤±1.23 mV drift over –40°C to +125°C ambient
Knee Current	30 µA - minimum bias current enabling regulation onset; enables ultra-low-power sleep modes
Dynamic Impedance	0.2–0.6 Ω at 1 mA - minimizes output voltage shift under load transients
Noise (10 Hz–10 kHz)	60 µV_rms - supports 16-bit+ resolution in precision data acquisition
Capacitive Load Stability	Unconditionally stable - eliminates need for series resistance or isolation when driving op-amp inputs or ADC sample capacitors

Pinout & Package

SOT23-3 package (JEDEC TO-236AB), 2.80–3.04 mm × 2.10–2.64 mm × 1.12 mm height, 0.95 mm lead pitch, green molding compound.

Pin/Terminal	Circuit Role	Design Meaning
Pin 1	Anode (floating or tied to Pin 2)	Optional connection to cathode for improved noise rejection; left open in standard shunt configuration
Pin 2	Cathode	Regulated output node; connects to load and bias resistor; accepts unlimited capacitive loading
Pin 3	Anode	Ground reference terminal; must be connected to system ground for proper regulation

Key Features

Feature	Design Value
LM4041 pin-compatible footprint	Direct drop-in replacement in existing SOT23-3 layouts without PCB revision
0.5% initial tolerance (C grade)	Eliminates post-manufacture trimming in portable medical sensors and handheld meters
30 µA minimum operating current	Enables operation from high-impedance bias networks in energy-harvesting systems
20 ppm/°C tempco	Meets industrial-grade accuracy requirements without external calibration
Unconditional capacitive stability	Removes need for external damping resistors when driving SAR ADC input capacitance (≥10 pF)

Applications

Battery-Powered Instrumentation

Precision Data Acquisition

Use Scenario: Handheld multimeter with auto-ranging and 16-bit sigma-delta ADC.

IC Role / Device Role / Timing Role: Shunt voltage reference providing stable 1.225 V reference for ADC internal gain stage and offset calibration.

Use Value: 0.5% tolerance and 20 ppm/°C TC ensure measurement repeatability across temperature without firmware correction.

Use Scenario: Isolated industrial sensor node transmitting 4–20 mA loop data via microcontroller.

IC Role / Device Role / Timing Role: Reference source for current-sense amplifier and DAC generating loop current setpoint.

Use Value: 30 µA knee current allows operation from low-quiescent LDOs, extending battery life beyond 5 years.

Portable Communication Devices

Notebook Power Management

Use Scenario: LTE modem module with integrated RF front-end requiring stable bias for PA driver stages.

IC Role / Device Role / Timing Role: Precision bias generator for analog control loops in envelope tracking circuits.

Use Value: 60 µV_rms noise prevents spurious sidebands in transmitted spectrum; unconditionally stable into RF IC decoupling caps.

Use Scenario: Dual-battery notebook with adaptive voltage regulator for DDR4 memory termination.

IC Role / Device Role / Timing Role: Reference for VRM feedback divider network ensuring accurate VTT and VPP regulation.

Use Value: SOT23-3 size fits tight layout constraints near memory slots; 125°C max operating temperature supports thermal zones near CPU/GPU.

Equivalent & Alternatives

The following parts are listed as comparable options for similar shunt voltage reference applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
LM4041CIM3X-ADJ	Adjustable output (1.24 V min); 0.5% tolerance; higher 65 ppm/°C max TC	Requires external resistor divider; less suitable for fixed 1.225 V systems	Select only if adjustable reference voltage is required; not pin-compatible for 1.225 V use
MAX6008AEUR+T	Fixed 1.25 V output; 0.2% tolerance; 30 ppm/°C max TC; SOT23-3	Higher accuracy but mismatched voltage; may require circuit redesign for 1.225 V nodes	Prefer when 1.25 V is acceptable and tighter initial tolerance justifies cost premium

Compared with LM4041CIM3X-ADJ and MAX6008AEUR+T, ZXRE4041ERSTOA uniquely delivers 1.225 V ±0.5% in a drop-in SOT23-3 package with lowest tempco and lowest knee current - critical for space-constrained, battery-operated precision analog systems.

Availability

ZXRE4041ERSTOA is available at Aetrix Electronics and suitable for battery-powered instrumentation, precision data acquisition systems, and portable communication devices requiring stable component supply with guaranteed long-term continuity.

Supply support for ZXRE4041ERSTOA 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

Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, specializing in high-reliability power management, signal integrity, and precision analog solutions.

The ZXRE4041 belongs to Diodes' precision voltage reference product line, engineered specifically for ultra-low-power, space-constrained applications where stability, low knee current, and SOT23 compatibility are mandatory.

FAQ

What is the recommended bias resistor value for ZXRE4041ERSTOA at 3.3 V supply?

At 3.3 V supply, a 15 kΩ resistor delivers ~137 µA bias current - well above the 30 µA knee and within the 12 mA absolute maximum. This ensures stable regulation while minimizing power dissipation (≈0.45 mW). Lower values increase current margin but raise quiescent power; higher values risk dropout below 30 µA at temperature extremes.

Can ZXRE4041ERSTOA drive a 100 nF bypass capacitor directly?

Yes - the device is unconditionally stable with any capacitive load, including 100 nF ceramic capacitors placed directly at the cathode. No series resistor or isolation is needed. This simplifies layout and improves transient response in ADC reference buffers and sensor front-ends.

How does the 0.5% tolerance affect system calibration in a 16-bit ADC design?

A 0.5% tolerance (±6.125 mV at 1.225 V) contributes ≈1 LSB error in a 2.5 V full-scale 16-bit ADC (LSB = 38.1 µV). For highest accuracy, system-level calibration can correct this offset; however, many portable instruments achieve required specs without calibration due to low tempco and noise.

Is ZXRE4041ERSTOA RoHS and REACH compliant?

Yes - ZXRE4041ERSTOA uses green molding compound (Br- and Sb-free), meets RoHS Directive 2011/65/EU, and complies with REACH SVHC thresholds. Certificate of Compliance is available upon request from Aetrix Electronics for traceable industrial procurement.

ZXRE4041ERSTOA Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Package/Case:: E-Line-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:: ±2%

Temperature Coefficient:: 100ppm/°C

Noise - 0.1Hz to 10Hz:: -

Noise - 10Hz to 10kHz:: 60µVrms

Voltage - Input:: -

Current - Supply:: -

Current - Cathode:: 30 µA

Operating Temperature:: -40°C ~ 125°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: E-Line (TO-92 compatible)

ZXRE4041ERSTOA FAQ

1.How can I place an order for ZXRE4041ERSTOA through Aetrix?

Please submit a Request for Quotation (RFQ) for ZXRE4041ERSTOA 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 ZXRE4041ERSTOA reliable?

The price and inventory of ZXRE4041ERSTOA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ZXRE4041ERSTOA is usually 5 days.

3.What payment methods are accepted for ZXRE4041ERSTOA?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ZXRE4041ERSTOA transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for ZXRE4041ERSTOA?

ZXRE4041ERSTOA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your ZXRE4041ERSTOA 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 ZXRE4041ERSTOA?

For technical support, including ZXRE4041ERSTOA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ZXRE4041ERSTOA requirements.

6.How does Aetrix verify that ZXRE4041ERSTOA is sourced from the original manufacturer or authorized distributors?

All ZXRE4041ERSTOA 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 ZXRE4041ERSTOA meets industry standards.

7.What is the process for return or replacement of ZXRE4041ERSTOA?

All ZXRE4041ERSTOA units undergo pre-shipment inspection (PSI). If there is an issue with ZXRE4041ERSTOA, 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 ZXRE4041ERSTOA part is unused and in its original packaging.

Return procedure for ZXRE4041ERSTOA:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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