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

Diodes Incorporated ZXRE1004DRSTZ

Name: ZXRE1004DRSTZ
Brand: Diodes Incorporated
SKU: ZXRE1004DRSTZ
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: ZXRE1004DRSTZ

Manufacturer:: Diodes Incorporated

Category:: Voltage Reference

Package:: E-Line-3

Datasheet:: ZXRE1004DRSTZ.pdf

Description:: IC VREF SHUNT 1% E-LINE

Quantity:: RFQ Add To RFQ list

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Inventory:3,552

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Product details

Overview

ZXRE1004DRSTZ from Diodes Incorporated is a micropower (4µA typical knee current), 1.22V bandgap voltage reference in SOT23 package, with 1% initial tolerance and 20ppm/°C typical temperature coefficient. It operates stably from 8µA to 20mA supply current and supports precision analog functions in space-constrained, battery-powered systems such as portable instrumentation and data acquisition.

For engineers reviewing the ZXRE1004DRSTZ datasheet, ZXRE1004DRSTZ pinout, ZXRE1004DRSTZ application, or ZXRE1004DRSTZ equivalent, key selection criteria include ultra-low quiescent current, capacitive-load immunity, tight thermal drift, and SOT23 footprint compatibility with legacy references like LT1004 and REF1004.

Technical Context

The ZXRE1004DRSTZ implements a two-terminal shunt-mode bandgap reference architecture, requiring external current sourcing and delivering a stable 1.22V output across 8µA–20mA operating range. Its unconditionally stable design tolerates unlimited capacitive load without oscillation.

It achieves 20ppm/°C typical TC over –40°C to +85°C and maintains <1mV ΔV_R across its full current range. Reverse breakdown voltage is specified at 1.22V ±1% (min/max 1.208V/1.232V) at I_R = 100µA.

Key Specifications

Parameter	Value and Actual Design Meaning
Reference Voltage	1.22 V ±1% at 100µA - defines absolute accuracy for ADC/DAC biasing and sensor excitation
Knee Current	4 µA typical - enables operation from microamp-level bias sources in ultra-low-power wake-up circuits
Temp Coefficient	20 ppm/°C typical - ensures ≤2.5 mV drift over –40°C to +85°C for portable medical devices
Operating Current	8 µA to 20 mA - supports wide dynamic range from energy-harvesting sensors to high-precision power supplies
Dynamic Impedance	0.2 Ω typical at 1mA - minimizes output perturbation under fast load transients in A/D converter references
Wideband Noise	60 µV_rms (10Hz–10kHz) - suitable for 12-bit+ data acquisition without additional filtering

Pinout & Package

SOT23-3 package (JEDEC TO-236AB), 1.3mm × 2.9mm footprint, 1.12mm max height. Pin 1 (anode) and Pin 2 (cathode) are functional terminals; Pin 3 is internally floating or connected to Pin 1 per E-Line variant - not used in SOT23 configuration.

Pin/Terminal	Circuit Role	Design Meaning
Pin 1 (Anode)	Current sink input	Accepts external bias current; connects to system ground via load resistor in shunt configuration
Pin 2 (Cathode)	Reference output	Provides regulated 1.22V node; must be decoupled locally for noise-sensitive applications
Pin 3 (NC)	No connect	Internally unconnected in SOT23; no PCB trace or pad required - reduces layout complexity

Key Features

Feature	Design Value
Unconditional stability	Operates without phase compensation across all capacitive loads - eliminates need for external isolation resistors
Ultra-low knee current	4µA typical start-up threshold - enables use with high-value bias resistors (>1MΩ) in coin-cell-powered designs
Low dynamic impedance	0.2Ω at 1mA - maintains regulation during rapid current steps in multiplexed sensor front-ends
RoHS/Green compliance	Totally lead-free, halogen- and antimony-free - meets IPC-1752A Class 3 material declarations for industrial OEMs

Applications

Battery-Powered Instrumentation

Precision Data Acquisition

Use Scenario: Handheld multimeter with 16-bit SAR ADC and coin-cell power source.

IC Role / Device Role / Timing Role: Shunt voltage reference providing stable 1.22V reference for ADC full-scale calibration.

Use Value: 4µA knee current extends battery life beyond 12 months; 20ppm/°C TC ensures <0.02% reading error across operating temperature.

Use Scenario: Industrial sensor node digitizing thermocouple and RTD signals.

IC Role / Device Role / Timing Role: Primary reference for dual-channel 24-bit sigma-delta ADC with programmable gain amplifier.

Use Value: 0.2Ω dynamic impedance prevents gain error during channel switching; 60µV_rms noise avoids oversampling penalty.

Portable Communication Devices

Test & Measurement Equipment

Use Scenario: Bluetooth LE audio transmitter with integrated DAC and Li-ion battery management.

IC Role / Device Role / Timing Role: Bias reference for DAC current-steering core and LDO feedback divider.

Use Value: Stable 1.22V enables consistent THD+N performance across battery discharge cycle; SOT23 saves >0.5mm² PCB area vs. TO-92.

Use Scenario: Benchtop digital multimeter with auto-ranging and 5½-digit resolution.

IC Role / Device Role / Timing Role: Master reference for internal 10V reference ladder and autoranging attenuator calibration.

Use Value: 1% initial tolerance and <1mV current-induced drift enable factory calibration without trimming; 8µA–20mA range supports multiple internal rail configurations.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
LT1004CZ-1.2	1.2V nominal, 0.5% tolerance, 50ppm/°C TC, 10µA knee current	Higher TC and knee current limit low-power portables; requires tighter thermal layout	Select when higher initial accuracy outweighs micropower needs and board space allows TO-92
REF1004CP	1.2V nominal, 1% tolerance, 50ppm/°C TC, 10µA knee current, TO-92 only	Larger footprint and higher TC reduce suitability for compact, wide-temperature deployments	Prefer for legacy drop-in replacement where SOT23 redesign is impractical and thermal margin exists

Compared with LT1004CZ-1.2 and REF1004CP, the ZXRE1004DRSTZ delivers superior thermal stability and 2.5× lower operating current in half the footprint - critical for next-gen wearables and edge AI sensors where power and area budgets are constrained.

Availability

ZXRE1004DRSTZ is available at Aetrix Electronics and suitable for battery-powered instrumentation, precision data acquisition, and portable communication devices requiring stable component supply with long-term manufacturability assurance.

Supply support for ZXRE1004DRSTZ 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, headquartered in Plano, Texas, with design centers across Asia and manufacturing in Taiwan, China, and Malaysia.

The ZXRE1004 belongs to Diodes' precision reference product line, engineered specifically for ultra-low-power, high-stability analog signal conditioning in portable and energy-constrained systems.

FAQ

What is the minimum operating current for reliable regulation?

The ZXRE1004DRSTZ achieves stable regulation starting at 4µA typical knee current, with guaranteed operation down to 8µA across temperature. Below 8µA, output voltage may deviate beyond specification; design must ensure bias current remains ≥8µA under worst-case conditions including temperature extremes and supply tolerance.

Can it drive a 100nF bypass capacitor directly?

Yes - the ZXRE1004DRSTZ is unconditionally stable and rated for unlimited capacitive loading. A 100nF ceramic capacitor can be placed directly on the cathode (Pin 2) without risk of oscillation or overshoot, simplifying layout for noise-sensitive ADC references.

Is this device qualified for automotive applications?

No - the ZXRE1004DRSTZ is not AEC-Q100 qualified. Diodes offers automotive-grade alternatives (e.g., AP2112K) but this part is intended for industrial and consumer portable equipment. For automotive use, contact Diodes' automotive team for PPAP-capable, IATF 16949-manufactured variants.

How does the 1% tolerance affect 12-bit ADC accuracy?

At 1.22V output, ±1% tolerance equals ±12.2mV error, which corresponds to ±40 LSBs in a 12-bit system with 5V full scale. For highest accuracy, pair with software calibration or select tighter-tolerance variants (e.g., ZXRE1004CFTA, 0.5%) if available through special order.

ZXRE1004DRSTZ Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Package/Case:: E-Line-3

Series:: -

Packaging:: Tape & Box (TB)

Product Status:: Obsolete

Reference Type:: Shunt

Output Type:: Fixed

Voltage - Output (Min/Fixed):: 1.22V

Voltage - Output (Max):: -

Current - Output:: 20 mA

Tolerance:: ±1%

Temperature Coefficient:: 75ppm/°C

Noise - 0.1Hz to 10Hz:: -

Noise - 10Hz to 10kHz:: 60µVrms

Voltage - Input:: -

Current - Supply:: -

Current - Cathode:: 8 µA

Operating Temperature:: -40°C ~ 85°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

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

ZXRE1004DRSTZ FAQ

1.How can I place an order for ZXRE1004DRSTZ through Aetrix?

Please submit a Request for Quotation (RFQ) for ZXRE1004DRSTZ 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 ZXRE1004DRSTZ reliable?

The price and inventory of ZXRE1004DRSTZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ZXRE1004DRSTZ is usually 5 days.

3.What payment methods are accepted for ZXRE1004DRSTZ?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ZXRE1004DRSTZ transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for ZXRE1004DRSTZ?

ZXRE1004DRSTZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your ZXRE1004DRSTZ 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 ZXRE1004DRSTZ?

For technical support, including ZXRE1004DRSTZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ZXRE1004DRSTZ requirements.

6.How does Aetrix verify that ZXRE1004DRSTZ is sourced from the original manufacturer or authorized distributors?

All ZXRE1004DRSTZ 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 ZXRE1004DRSTZ meets industry standards.

7.What is the process for return or replacement of ZXRE1004DRSTZ?

All ZXRE1004DRSTZ units undergo pre-shipment inspection (PSI). If there is an issue with ZXRE1004DRSTZ, 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 ZXRE1004DRSTZ part is unused and in its original packaging.

Return procedure for ZXRE1004DRSTZ:

1.Submit a request within 90 days.

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

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