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Diodes Incorporated ZXRE1004ERSTOA
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- Part No.:
- ZXRE1004ERSTOA
- Manufacturer:
- Diodes Incorporated
- Category:
- Voltage Reference
- Package:
- E-Line-3
- Datasheet:
-
ZXRE1004ERSTOA.pdf
- Description:
- IC VREF SHUNT 2% E-LINE
- Quantity:
- Payment:
- Shipping:
Inventory:3,745
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Product details
Overview
ZXRE1004ERSTOA 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 over 8µA–20mA supply current, delivers stable output under capacitive loads, and targets precision low-power systems such as battery-powered instrumentation and portable A/D converters.
For engineers reviewing the ZXRE1004ERSTOA datasheet, ZXRE1004ERSTOA pinout, ZXRE1004ERSTOA application, or ZXRE1004ERSTOA equivalent, key selection criteria include ultra-low quiescent current, tight thermal drift, unconditional stability with capacitive loads, and SOT23 footprint compatibility with legacy references like LT1004 and REF1004.
Technical Context
The ZXRE1004ERSTOA implements a two-terminal shunt-mode bandgap reference architecture, requiring external current source biasing. Its reverse breakdown voltage is trimmed to 1.22V at 100µA, with guaranteed stability across 8µA–20mA operating range and minimal dynamic impedance (0.2Ω typ. at 1mA).
It achieves 20ppm/°C typical TC over –40°C to +85°C via internal curvature compensation, and maintains <1mV output shift from 8µA to 1mA load change-critical for high-resolution data acquisition where reference drift directly impacts ADC accuracy.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reference Voltage | 1.22 V ±1% at 100 µA - defines absolute scaling for precision analog signal chains |
| Knee Current | 4 µA typical - enables operation from microamp-level bias sources in energy-constrained designs |
| Temp Coefficient | 20 ppm/°C typical - limits voltage drift to ≤2.5 mV over full industrial temperature range |
| Operating Current | 8 µA to 20 mA - supports wide dynamic range without output collapse or instability |
| Dynamic Impedance | 0.2 Ω typical at 1 mA - minimizes load-induced error in buffered reference applications |
| Wideband Noise | 60 µV(rms) (10 Hz–10 kHz) - suitable for 16-bit+ ADC reference without additional filtering |
Pinout & Package
SOT23-3 package (JEDEC TO-236AB), 2.80–3.04 mm length, 1.20–1.40 mm width, 1.12 mm max height; surface-mount, lead-free, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Anode (Input) | Connected to current source; reverse-biased terminal for shunt reference operation |
| Pin 2 | Cathode (Output) | Provides stable 1.22V reference voltage; connects to load and feedback nodes |
| Pin 3 | NC / Floating | No internal connection; may be left unconnected or tied to Pin 2 per layout best practice |
Key Features
| Feature | Design Value |
|---|---|
| Unconditional Stability | Maintains regulation with ≥100nF capacitive load-eliminates need for series isolation resistor |
| Low Knee Current | 4µA typical start-up threshold-enables use with high-value bias resistors in coin-cell systems |
| Shunt Architecture | Two-terminal operation simplifies PCB layout and supports floating or ground-referenced topologies |
| RoHS/Green Compliance | Fully lead-free, halogen-free, antimony-free-meets IPC-1752A Class 2 material declarations |
Applications
| Battery-Powered Instrumentation | Precision Data Acquisition |
|---|---|
Use Scenario: Handheld multimeter with 3.5-digit resolution powered by CR2032 cell. IC Role / Device Role / Timing Role: Shunt voltage reference for 12-bit SAR ADC front-end scaling. Use Value: 4µA knee current extends battery life beyond 1 year; 20ppm/°C TC ensures calibration stability across field temperatures. | Use Scenario: Industrial sensor node logging thermocouple and RTD signals. IC Role / Device Role / Timing Role: Precision reference for dual-channel 16-bit sigma-delta ADC. Use Value: 60µV(rms) noise floor avoids SNR degradation; 0.2Ω dynamic impedance prevents gain error from varying sensor excitation current. |
| Portable Communication Devices | Notebook System Monitoring |
Use Scenario: LTE modem module requiring accurate VREF for RF DACs and power amplifier bias control. IC Role / Device Role / Timing Role: Stable 1.22V reference for digital-to-analog conversion of baseband I/Q signals. Use Value: 8µA–20mA operating range accommodates burst-mode transmit current transients without reference droop. | Use Scenario: Embedded controller monitoring CPU core voltage, memory rail, and battery status. IC Role / Device Role / Timing Role: Reference for multi-channel system supervisory ADC. Use Value: SOT23 footprint allows placement near SoC; ±1% tolerance meets JEDEC JESD84-A441 spec for platform voltage margining. |
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 suitability for sub-10µA systems | Prefer when tighter initial tolerance required and thermal drift budget allows >50ppm/°C |
| REF1004CM | 1.2V nominal, 1% tolerance, 50ppm/°C TC, 10µA knee current, SO-8 package | Larger SO-8 footprint and higher quiescent demand reduce portability viability | Select only if board space permits SO-8 and legacy design reuse outweighs micropower advantage |
Compared with LT1004CZ-1.2 and REF1004CM, the ZXRE1004ERSTOA delivers superior thermal stability and half the knee current in a 30% smaller package-making it optimal for space- and energy-constrained portable measurement systems where long-term calibration integrity is critical.
Availability
ZXRE1004ERSTOA is available at Aetrix Electronics and suitable for battery-powered instrumentation, precision data acquisition, and portable communication devices requiring stable component supply with consistent parametric performance across production lots.
Supply support for ZXRE1004ERSTOA 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, manufacturing, and sales operations across Asia, Europe, and North America.
The ZXRE1004 belongs to Diodes' precision reference product line, engineered specifically for ultra-low-power, high-stability analog signal conditioning in portable and battery-operated equipment.
FAQ
What is the minimum operating current for reliable regulation?
The ZXRE1004ERSTOA begins regulating at 4µA typical knee current, but guaranteed regulation starts at 8µA across –40°C to +85°C per datasheet Electrical Characteristics table. Below 8µA, output voltage may deviate beyond specified tolerance and temperature coefficient limits.
Can it drive a 100nF capacitor directly without oscillation?
Yes-the device is unconditionally stable and maintains regulation with ≥100nF capacitive load on the cathode, as confirmed in the "Unconditionally Stable" feature and Typical Characteristics plots. No series resistor or isolation is required for standard decoupling.
Is the SOT23-3 pinout compatible with LT1004 or REF1004?
No-LT1004 (TO-92) and REF1004 (SO-8) use different packages and pinouts. The ZXRE1004ERSTOA's SOT23-3 pinout (Anode–Cathode–NC) is not pin-compatible, though its electrical behavior matches those references in shunt-mode operation.
Does this part meet AEC-Q200 for automotive use?
No-ZXRE1004ERSTOA is not qualified to AEC-Q200. Diodes offers automotive-grade alternatives (e.g., AZR431Q) with PPAP capability and IATF 16949 manufacturing; contact Diodes marketing for qualified variants if automotive qualification is required.
ZXRE1004ERSTOA 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):
- 1.22V
- Voltage - Output (Max):
- -
- Current - Output:
- 20 mA
- Tolerance:
- ±2%
- 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)
ZXRE1004ERSTOA FAQ
1.How can I place an order for ZXRE1004ERSTOA through Aetrix?
Please submit a Request for Quotation (RFQ) for ZXRE1004ERSTOA 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 ZXRE1004ERSTOA reliable?
The price and inventory of ZXRE1004ERSTOA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ZXRE1004ERSTOA is usually 5 days.
3.What payment methods are accepted for ZXRE1004ERSTOA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ZXRE1004ERSTOA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ZXRE1004ERSTOA?
ZXRE1004ERSTOA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ZXRE1004ERSTOA 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 ZXRE1004ERSTOA?
For technical support, including ZXRE1004ERSTOA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ZXRE1004ERSTOA requirements.
6.How does Aetrix verify that ZXRE1004ERSTOA is sourced from the original manufacturer or authorized distributors?
All ZXRE1004ERSTOA 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 ZXRE1004ERSTOA meets industry standards.
7.What is the process for return or replacement of ZXRE1004ERSTOA?
All ZXRE1004ERSTOA units undergo pre-shipment inspection (PSI). If there is an issue with ZXRE1004ERSTOA, 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 ZXRE1004ERSTOA part is unused and in its original packaging.
Return procedure for ZXRE1004ERSTOA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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