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

Diodes Incorporated ZXRE4041ERSTZ

Name: ZXRE4041ERSTZ
Brand: Diodes Incorporated
SKU: ZXRE4041ERSTZ
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: ZXRE4041ERSTZ

Manufacturer:: Diodes Incorporated

Category:: Voltage Reference

Package:: TO-236-3, SC-59, SOT-23-3

Datasheet:: ZXRE4041ERSTZ.pdf

Description:: IC VREF SHUNT 2% SOT23

Quantity:: RFQ Add To RFQ list

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Inventory:1,996

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Product details

Overview

ZXRE4041ERSTZ from Diodes Incorporated is a micropower bandgap voltage reference IC delivering a precise 1.225 V output with ±0.5% initial tolerance (C grade), 20 ppm/°C typical temperature coefficient, and stable operation from 30 µA to 12 mA supply current - used in precision A/D converters, portable instrumentation, and battery-powered systems.

For engineers reviewing the ZXRE4041ERSTZ datasheet, ZXRE4041ERSTZ pinout, ZXRE4041ERSTZ application, or ZXRE4041ERSTZ equivalent, key selection factors include knee current (30 µA), capacitive-load stability, SOT23-3 package compatibility, and direct functional replacement for LM4041 series in low-power reference designs.

Technical Context

The ZXRE4041ERSTZ implements a two-terminal shunt topology with internal bandgap core, operating as a precision voltage clamp across its anode–cathode terminals. It requires no external biasing components and maintains regulation over a wide current range (30 µA–12 mA) without oscillation.

Its unconditionally stable design tolerates unlimited capacitive load at the cathode, eliminating need for series resistance or isolation networks. Temperature compensation is achieved via curvature-corrected bandgap architecture, yielding 20 ppm/°C typical TC over −40°C to +125°C.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Voltage	1.225 V ±0.5% (C grade) - defines ADC reference accuracy and system gain calibration baseline
Temp Coefficient	20 ppm/°C typical - ensures ≤0.3 mV drift over 0–70°C ambient, critical for portable measurement
Knee Current	30 µA - minimum current to enter regulation; enables ultra-low-power sleep-mode reference hold
Dynamic Impedance	0.2 Ω typical at 1 mA - minimizes output perturbation during fast load transients in data acquisition
Wideband Noise	60 µV(rms), 10 Hz–10 kHz - supports 16-bit+ resolution in precision SAR ADC front-ends
Capacitive Load Stability	Unconditional - allows direct connection to large decoupling caps (≥10 µF) without phase margin loss

Pinout & Package

SOT23-3 package (JEDEC TO-236AB), 2.80 × 2.64 × 1.12 mm body, gull-wing leads, RoHS-compliant green molding compound.

Pin/Terminal	Circuit Role	Design Meaning
Anode (Pin 1)	Reference ground node	Connected to system GND; forms return path for shunt current; may be left floating per datasheet option
Cathode (Pin 2)	Reference output node	Provides regulated 1.225 V when current flows into this terminal; connects to ADC REF+ or op-amp feedback
No Connect (Pin 3)	Unused terminal	Internally unconnected; must remain open or tied to cathode only if mechanical stabilization required

Key Features

Feature	Design Value
Shunt topology with zero external components	Eliminates need for bias resistor network, reducing BOM count and PCB area in space-constrained designs
30 µA regulation threshold	Enables continuous reference operation during microcontroller deep-sleep modes where supply current drops below 100 µA
0.2 Ω dynamic impedance	Supports <10 µV output shift under 100 µA load steps - essential for high-resolution sensor signal chains
Unconditional capacitive stability	Permits use of bulk ceramic + tantalum decoupling directly at cathode, improving PSRR without compensation
Green compound packaging	Meets IPC-J-STD-609A Class 1 halogen-free requirements for industrial and medical end equipment

Applications

Battery-Powered Instrumentation

Precision Data Acquisition

Use Scenario: Handheld multimeter with 200 kSPS sampling and auto-ranging analog front-end.

IC Role / Device Role / Timing Role: Shunt voltage reference for dual-slope integrator and 24-bit sigma-delta ADC reference buffer.

Use Value: 20 ppm/°C TC and 60 µV noise ensure <0.01% full-scale error across 0–50°C operating range without recalibration.

Use Scenario: Isolated industrial sensor node transmitting 4–20 mA loop data via RS-485.

IC Role / Device Role / Timing Role: Precision reference for 16-bit DAC generating loop current setpoint and for ADC measuring thermocouple EMF.

Use Value: 30 µA knee current enables reference retention during 10-second wireless wake-up intervals, minimizing system power budget.

Portable Medical Monitoring

Notebook System Power Management

Use Scenario: Wearable ECG patch with single-cell Li-ion battery and low-noise analog signal conditioning.

IC Role / Device Role / Timing Role: Reference source for instrumentation amplifier gain-setting and ADC conversion in biopotential front-end.

Use Value: Unconditional capacitive stability allows direct integration with 4.7 µF X7R ceramic cap, suppressing switching noise from on-chip DC-DC converter.

Use Scenario: Ultrabook platform requiring accurate voltage margining for CPU VRM and memory termination.

IC Role / Device Role / Timing Role: Calibration reference for PMIC internal ADC monitoring rail voltages (VDDQ, VCCIO).

Use Value: ±0.5% tolerance and 0.2 Ω Z_OUT enable <±1.5 mV absolute accuracy in closed-loop digital power control loops.

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 base), 1% initial tolerance, 50 ppm/°C TC, higher 65 µA knee current	Requires external resistor divider for 1.225 V; less suitable for ultra-low-I_Q systems	Select when adjustable reference or legacy LM4041 footprint is mandatory; accept higher drift and current penalty
MAX6008AEUR+T	Fixed 1.25 V output, 0.2% tolerance, 30 ppm/°C TC, 1.5 µA shutdown mode	Includes enable pin and tighter tolerance but incompatible pinout (SOT23-5); not drop-in	Choose for highest accuracy where board redesign is acceptable and sub-µA shutdown is required

Compared with LM4041CIM3X-ADJ and MAX6008AEUR+T, the ZXRE4041ERSTZ uniquely balances ultra-low knee current (30 µA), tight C-grade tolerance (±0.5%), and true SOT23-3 pin compatibility - making it optimal for cost-sensitive, space-constrained, battery-operated precision analog systems without enable control needs.

Availability

ZXRE4041ERSTZ is available at Aetrix Electronics and suitable for battery-powered instrumentation, precision data acquisition systems, and portable medical monitoring devices requiring stable component supply with guaranteed long-term sourcing.

Supply support for ZXRE4041ERSTZ 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, energy-efficient components for industrial, computing, and consumer markets.

The ZXRE4041 belongs to Diodes' precision reference product line, engineered specifically for low-power, high-accuracy voltage referencing in portable and space-constrained applications where micropower operation and thermal stability are critical.

FAQ

What is the minimum operating current required for regulation?

The ZXRE4041ERSTZ achieves stable regulation at a minimum cathode current of 30 µA (knee current), verified per DS32169 Rev. 6–2 electrical characteristics table. Below this, output voltage deviates nonlinearly; operation down to 20 µA is possible but with >1% error and degraded TC performance.

Can ZXRE4041ERSTZ drive a 10 µF ceramic capacitor directly?

Yes - the device is unconditionally stable with any capacitive load, including 10 µF X7R ceramics, as confirmed in the "Features" section and Application Circuit diagram of DS32169. No series resistor or isolation network is needed, simplifying layout in noise-sensitive signal chains.

Is ZXRE4041ERSTZ pin-compatible with LM4041CIM3X?

Yes - ZXRE4041ERSTZ uses identical SOT23-3 pinout (Anode–Cathode–NC) and matches LM4041CIM3X mechanical and electrical interface, enabling direct substitution without PCB modification, provided the 1.225 V fixed output meets system requirements.

What is the maximum junction temperature during continuous operation?

Maximum junction temperature is +125°C, aligned with the specified operating temperature range (−40°C to +125°C) and 330 mW power dissipation limit at 25°C ambient. Derating follows standard SOT23 thermal resistance (θ_JA ≈ 300°C/W), limiting max continuous power to ~110 mW at +85°C ambient.

ZXRE4041ERSTZ Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Package/Case:: TO-236-3, SC-59, SOT-23-3

Series:: -

Packaging:: Tape & Box (TB)

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:: Surface Mount

Supplier Device Package:: SOT-23-3

ZXRE4041ERSTZ FAQ

1.How can I place an order for ZXRE4041ERSTZ through Aetrix?

Please submit a Request for Quotation (RFQ) for ZXRE4041ERSTZ 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 ZXRE4041ERSTZ reliable?

The price and inventory of ZXRE4041ERSTZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ZXRE4041ERSTZ is usually 5 days.

3.What payment methods are accepted for ZXRE4041ERSTZ?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ZXRE4041ERSTZ transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for ZXRE4041ERSTZ?

ZXRE4041ERSTZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your ZXRE4041ERSTZ 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 ZXRE4041ERSTZ?

For technical support, including ZXRE4041ERSTZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ZXRE4041ERSTZ requirements.

6.How does Aetrix verify that ZXRE4041ERSTZ is sourced from the original manufacturer or authorized distributors?

All ZXRE4041ERSTZ 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 ZXRE4041ERSTZ meets industry standards.

7.What is the process for return or replacement of ZXRE4041ERSTZ?

All ZXRE4041ERSTZ units undergo pre-shipment inspection (PSI). If there is an issue with ZXRE4041ERSTZ, 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 ZXRE4041ERSTZ part is unused and in its original packaging.

Return procedure for ZXRE4041ERSTZ:

1.Submit a request within 90 days.

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

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