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

Diodes Incorporated ZRC400F01TC

Name: ZRC400F01TC
Brand: Diodes Incorporated
SKU: ZRC400F01TC
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: ZRC400F01TC

Manufacturer:: Diodes Incorporated

Category:: Voltage Reference

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

Datasheet:: ZRC400F01TC.pdf

Description:: IC VREF SHUNT 1% SOT23

Quantity:: RFQ Add To RFQ list

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Inventory:4,945

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Product details

Overview

ZRC400F01TC from Diodes Incorporated is a precision 4.096 V bandgap voltage reference IC in SOT23-3 package, featuring 1% initial tolerance, 30 ppm/°C typical temperature coefficient, and 0.4 Ω typical slope resistance. It operates from 23 μA to 5 mA, requires no external capacitor, and stabilizes in under 10 μs-ideal for portable instrumentation and battery-powered metering systems.

For engineers reviewing the ZRC400F01TC datasheet, ZRC400F01TC pinout, ZRC400F01TC application, or ZRC400F01TC equivalent, key selection criteria include low knee current (18 μA typ), capacitive-load stability, industrial temperature range (–40°C to +85°C), and transient response performance critical for precision ADC biasing and low-power sensor signal conditioning.

Technical Context

The ZRC400F01TC implements a bandgap-based reference architecture with inherent compensation for process and temperature variation, delivering stable 4.096 V output without external stabilization components. Its low 0.4 Ω slope resistance and 90 µV_rms wideband noise (10 Hz–10 kHz) support high-resolution data acquisition systems.

Designed for micropower operation, it maintains regulation down to 18 μA minimum current and withstands transient surges up to 200 mA due to rugged 20 V processing. The device achieves full stability in <10 μs after power-on or load step, enabling use in wake-up-critical portable applications.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Voltage	4.096 V ±1% - precise reference for 12-bit ADCs and DACs requiring 4.096 V full-scale alignment
Temp Coefficient	30 ppm/°C typ - ensures ≤±0.3% voltage drift over –40°C to +85°C operating range
Slope Resistance	0.4 Ω typ - minimizes load-induced error in current-sensing and feedback paths
Min Operating Current	18 μA typ - enables ultra-low-power sleep-mode reference retention in battery-backed systems
Stabilization Time	<10 μs - supports fast wake-up and burst-mode measurement cycles
Noise (10Hz–10kHz)	90 µV_rms - preserves SNR in 16-bit+ precision analog front-ends
Capacitive Load Stability	Stable with any capacitive load - eliminates need for output filter design iteration

Pinout & Package

SOT23-3 package (JEDEC MO-178AA), 2.80–3.04 mm × 2.10–2.64 mm footprint, 1.12 mm max height, 0.95 mm lead pitch. RoHS-compliant, "Green" molding compound.

Pin/Terminal	Circuit Role	Design Meaning
Pin 1	Anode (Input)	Connect to supply rail; reverse-biased operation requires current sourcing into this terminal
Pin 2	Cathode (Output)	Delivers regulated 4.096 V; low-impedance node for ADC reference or op-amp biasing
Pin 3	Case / Thermal Pad (Not Internally Connected)	Floating or tied to ground for thermal enhancement; electrically isolated per datasheet

Key Features

Feature	Design Value
No external capacitor required	Eliminates BOM cost and PCB area for stabilization, verified across 0–10 µF capacitive loads
Low knee current	18 μA typical - enables operation in energy-harvesting and coin-cell-powered nodes
Fast transient response	Stabilizes in <10 μs - supports microsecond-scale power cycling in duty-cycled sensors
Industrial temperature range	–40°C to +85°C operation - qualified for field-deployed test equipment and industrial meters
Rugged surge tolerance	Withstands 200 mA transient current - protects against ESD and supply-rail fault events

Applications

Portable Multimeter Reference

Smart Sensor Transmitter Bias

Use Scenario: Handheld digital multimeter requiring stable 4.096 V reference for 12-bit SAR ADC scaling.

IC Role / Device Role / Timing Role: Primary voltage reference source for ADC full-scale calibration and offset trimming.

Use Value: 1% tolerance and 30 ppm/°C TC ensure measurement accuracy remains within ±0.5% over full temperature range without recalibration.

Use Scenario: Loop-powered 4–20 mA smart pressure transmitter with integrated signal conditioning.

IC Role / Device Role / Timing Role: Precision bias reference for instrumentation amplifier and ADC reference input.

Use Value: Low 18 μA knee current allows reliable start-up and regulation even at 3.3 V supply with 200 Ω loop impedance.

Battery-Backed RTC Calibration

Energy Meter ADC Reference

Use Scenario: Real-time clock module with backup coin cell, requiring low-quiescent reference during sleep.

IC Role / Device Role / Timing Role: Standby-mode voltage reference for crystal oscillator bias and timekeeping circuitry.

Use Value: Stable regulation at 23 μA enables >5-year coin-cell life while maintaining ±2 ppm timing accuracy.

Use Scenario: Class 0.5 electricity meter using 24-bit sigma-delta ADC for voltage/current channel sensing.

IC Role / Device Role / Timing Role: High-stability reference for dual-channel simultaneous sampling ADC.

Use Value: 90 µV_rms noise and 0.4 Ω slope resistance preserve ENOB >21 bits at 1 kSPS.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
TLV431AIDBZR	Adjustable (2.5 V min), 1% tol, 50 ppm/°C TC, 0.2 Ω RS, requires external resistor divider	Needs two resistors for 4.096 V setting; higher TC increases temp-induced error in metering	Choose if adjustable output or tighter slope resistance is prioritized over fixed-voltage simplicity
REF3040AIDBZR	Fixed 4.096 V, 0.2% tol, 50 ppm/°C TC, 0.3 Ω RS, 50 μA min current	Higher min current limits use in sub-50 μA sleep modes; tighter tolerance adds cost	Choose when absolute accuracy dominates over micropower operation in mains-powered instruments

Compared with TLV431AIDBZR and REF3040AIDBZR, the ZRC400F01TC uniquely balances ultra-low knee current (18 μA), fixed 4.096 V output, and capacitor-free stability-making it optimal for space-constrained, battery-operated measurement devices where startup speed and long service life are critical.

Availability

ZRC400F01TC is available at Aetrix Electronics and suitable for portable instrumentation, battery-powered test equipment, and industrial metering systems requiring stable component supply with consistent parametric performance across production lots.

Supply support for ZRC400F01TC 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, cost-optimized components for industrial, computing, and consumer markets.

The ZRC series voltage references were developed to deliver precision, low-power, and capacitor-free operation in compact SOT23 packages-targeting portable test gear, sensor interfaces, and battery-backed measurement systems.

FAQ

What is the maximum capacitive load the ZRC400F01TC can drive without oscillation?

The ZRC400F01TC is explicitly characterized as stable with any capacitive load, including 0–10 µF, per the datasheet's "Capacitive Load Stability" section. No external series resistor or isolation capacitor is required, simplifying layout and eliminating phase-margin tuning.

Can ZRC400F01TC be used in reverse-bias configuration only?

Yes-the ZRC400F01TC is a two-terminal shunt reference designed exclusively for reverse-bias operation: Pin 1 (anode) connects to the supply rail, Pin 2 (cathode) delivers the 4.096 V reference. Forward conduction is not supported and may damage the device.

Does ZRC400F01TC require a minimum load current to maintain regulation?

It requires a minimum operating current of 18 μA (typical) into Pin 1 to maintain regulation. This current must be supplied externally-e.g., via a series resistor from a higher voltage rail-and cannot be sourced from the reference output itself, as it is a shunt device.

How does the ZRC400F01TC perform under rapid supply transients?

Per datasheet Figure 7, the ZRC400F01TC reaches stable output within <10 μs after a 100 mV step on the supply rail. Its internal bandgap design and low dynamic impedance enable robust rejection of supply noise and fast recovery from brown-out events.

ZRC400F01TC Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

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

Series:: -

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Reference Type:: Shunt

Output Type:: Fixed

Voltage - Output (Min/Fixed):: 4.096V

Voltage - Output (Max):: -

Current - Output:: 5 mA

Tolerance:: ±1%

Temperature Coefficient:: 90ppm/°C

Noise - 0.1Hz to 10Hz:: -

Noise - 10Hz to 10kHz:: 90µVrms

Voltage - Input:: -

Current - Supply:: -

Current - Cathode:: 23 µA

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SOT-23-3

ZRC400F01TC FAQ

1.How can I place an order for ZRC400F01TC through Aetrix?

Please submit a Request for Quotation (RFQ) for ZRC400F01TC 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 ZRC400F01TC reliable?

The price and inventory of ZRC400F01TC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ZRC400F01TC is usually 5 days.

3.What payment methods are accepted for ZRC400F01TC?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ZRC400F01TC transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for ZRC400F01TC?

ZRC400F01TC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your ZRC400F01TC 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 ZRC400F01TC?

For technical support, including ZRC400F01TC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ZRC400F01TC requirements.

6.How does Aetrix verify that ZRC400F01TC is sourced from the original manufacturer or authorized distributors?

All ZRC400F01TC 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 ZRC400F01TC meets industry standards.

7.What is the process for return or replacement of ZRC400F01TC?

All ZRC400F01TC units undergo pre-shipment inspection (PSI). If there is an issue with ZRC400F01TC, 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 ZRC400F01TC part is unused and in its original packaging.

Return procedure for ZRC400F01TC:

1.Submit a request within 90 days.

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

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