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Diodes Incorporated ZXRE4041DR
- Part No.:
- ZXRE4041DR
- Manufacturer:
- Diodes Incorporated
- Category:
- Voltage Reference
- Package:
- TO-226-3, TO-92-3 (TO-226AA)
- Datasheet:
-
ZXRE4041DR.pdf
- Description:
- IC VREF SHUNT 1% TO92
- Quantity:
- Payment:
- Shipping:
Inventory:1,353
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Product details
Overview
ZXRE4041DR 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 converter biasing.
For engineers reviewing the ZXRE4041DR datasheet, ZXRE4041DR pinout, ZXRE4041DR application, or ZXRE4041DR equivalent, key selection criteria include knee current (30 µA), reverse dynamic impedance (0.2–0.6 Ω), wideband noise (60 µVrms), tolerance grade compatibility, and SOT23 footprint constraints for space-constrained designs.
Technical Context
The ZXRE4041DR implements a two-terminal shunt-mode bandgap reference architecture, operating as a precision 1.225 V breakdown device across 30 µA to 12 mA anode-cathode current. It achieves stable regulation without external components and maintains performance over −40°C to +125°C.
Its unconditionally stable design eliminates need for output capacitance compensation, and its low 60 µVrms (10 Hz–10 kHz) noise supports high-resolution data acquisition. The device's 0.2 Ω typical dynamic impedance ensures minimal load-induced voltage shift during current transients.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reference Voltage | 1.225 V ±0.5% (C grade); sets accurate bias point for ADCs, DACs, and sensor signal chains |
| Tempco | 20 ppm/°C typical; limits drift to ±2.5 mV over −40°C to +125°C operating range |
| Knee Current | 30 µA; enables reliable turn-on and regulation in ultra-low-power systems (e.g., coin-cell IoT sensors) |
| Dynamic Impedance | 0.2–0.6 Ω at 1 mA; minimizes output voltage variation under dynamic load changes |
| Wideband Noise | 60 µVrms (10 Hz–10 kHz); preserves SNR in 16-bit+ data converters |
| Capacitive Load Stability | Unconditionally stable; permits direct connection to large bypass caps without oscillation risk |
Pinout & Package
Package: SOT23-3 (JEDEC TO-236AB), 2.80 × 2.64 × 1.12 mm body, gull-wing leads, green molding compound (Br/Sb-free).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | Current sink input | Connected to system ground or current-setting resistor; floating allowed per datasheet |
| Cathode (Pin 2) | Reference output | Provides regulated 1.225 V; connects to load or feedback node of regulator/ADC |
| No Connect (Pin 3) | Unused terminal | Internally unconnected; left open or tied to cathode per layout best practice |
Key Features
| Feature | Design Value |
|---|---|
| Shunt-mode operation | Enables simple 2-resistor biasing and eliminates need for series pass element or external op-amp |
| 0.5% initial tolerance (C grade) | Reduces calibration overhead in portable medical and test equipment requiring <1 LSB error at 12-bit resolution |
| 30 µA minimum operating current | Supports operation from high-impedance sources (e.g., microcontroller GPIO with weak pull-up) |
| 20 ppm/°C tempco | Meets industrial-grade accuracy requirements without external temperature compensation circuitry |
| Green package material | Complies with RoHS and JEDEC J-STD-020 reflow profiles without halogen-related reliability concerns |
Applications
| Battery-Powered Instrumentation | Precision Data Acquisition |
|---|---|
Use Scenario: Handheld multimeter with 3.3 V supply and 16-bit SAR 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: 60 µVrms noise and 20 ppm/°C tempco ensure <±0.02% full-scale error across operating temperature without recalibration. | Use Scenario: Isolated analog input module for PLC with 24 V loop power. IC Role / Device Role / Timing Role: Precision bias source for instrumentation amplifier front-end and ADC reference buffer. Use Value: 30 µA knee current allows regulation from low-current isolated DC-DC outputs; unconditionally stable into 100 nF decoupling cap. |
| Portable Communication Devices | Notebook Power Management |
Use Scenario: LTE modem RF front-end requiring stable bias for LNA and mixer LO generation. IC Role / Device Role / Timing Role: Low-noise reference for voltage-controlled oscillator (VCO) tuning voltage generation. Use Value: Sub-1 mV total error (initial + tempco + line regulation) maintains EVM compliance across battery discharge cycle. | Use Scenario: Dual-battery notebook with adaptive CPU core voltage scaling. IC Role / Device Role / Timing Role: Reference for system power monitor IC measuring rail voltages and current sense amplifiers. Use Value: 0.5% tolerance and 330 mW max power dissipation enable accurate ±1% rail monitoring over full thermal range. |
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); higher 65 ppm/°C max tempco; 75 µA min operating current | Requires external resistor divider; less suitable for fixed 1.225 V systems | Select only when adjustable reference or higher current capability is required |
| MAX6008AEUR+T | Fixed 1.25 V output; 25 ppm/°C max tempco; 15 µA min operating current; SC70-3 package | SC70 footprint incompatible with SOT23 PCB layout; 25 mV higher nominal voltage affects ADC full-scale mapping | Choose only if lower knee current and SC70 board space savings outweigh voltage and layout mismatch |
Compared with LM4041CIM3X-ADJ and MAX6008AEUR+T, the ZXRE4041DR offers tighter 0.5% tolerance at 1.225 V, lower knee current than LM4041, and SOT23 pinout compatibility - making it optimal for space-constrained, fixed-voltage, battery-operated precision analog systems.
Availability
ZXRE4041DR is available at Aetrix Electronics and suitable for battery-powered instrumentation, portable communication devices, and precision data acquisition systems requiring stable component supply with long-term lifecycle support.
Supply support for ZXRE4041DR 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 solutions for industrial, computing, and consumer markets.
The ZXRE4041DR belongs to Diodes' precision voltage reference product line, engineered for ultra-low-power, high-accuracy analog subsystems in portable and battery-critical applications.
FAQ
What is the recommended operating current range for ZXRE4041DR?
The ZXRE4041DR operates reliably from 30 µA (knee current) up to 12 mA. Typical applications use 100 µA to 1 mA to balance power efficiency and dynamic impedance. Exceeding 12 mA risks exceeding 330 mW power dissipation at 25°C ambient, potentially degrading long-term stability.
Can ZXRE4041DR drive a 100 nF capacitor directly?
Yes - the ZXRE4041DR is unconditionally stable and requires no series resistance or isolation when driving capacitive loads up to at least 100 nF, as confirmed by Diodes' application circuit testing and stability characterization across temperature and current ranges.
How does the 0.5% tolerance affect 12-bit ADC accuracy?
With a 1.225 V reference, ±0.5% tolerance equals ±6.1 mV error, corresponding to ±24.5 LSB in a 12-bit (4096-step) system. This meets typical industrial ADC accuracy requirements without trimming, especially when combined with its low tempco and noise.
Is ZXRE4041DR pin-compatible with LM4041 variants?
Yes - ZXRE4041DR uses identical SOT23-3 pinout (Anode–Cathode–NC) and shares functional equivalence with LM4041C/D/X grades. No PCB redesign is needed when substituting, though users must verify matching tolerance grade and operating current conditions.
ZXRE4041DR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Package/Case:
- TO-226-3, TO-92-3 (TO-226AA)
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Reference Type:
- Shunt
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 1.225V
- Voltage - Output (Max):
- -
- Current - Output:
- 12 mA
- Tolerance:
- ±1%
- 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:
- TO-92
ZXRE4041DR FAQ
1.How can I place an order for ZXRE4041DR through Aetrix?
Please submit a Request for Quotation (RFQ) for ZXRE4041DR 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 ZXRE4041DR reliable?
The price and inventory of ZXRE4041DR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ZXRE4041DR is usually 5 days.
3.What payment methods are accepted for ZXRE4041DR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ZXRE4041DR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ZXRE4041DR?
ZXRE4041DR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ZXRE4041DR 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 ZXRE4041DR?
For technical support, including ZXRE4041DR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ZXRE4041DR requirements.
6.How does Aetrix verify that ZXRE4041DR is sourced from the original manufacturer or authorized distributors?
All ZXRE4041DR 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 ZXRE4041DR meets industry standards.
7.What is the process for return or replacement of ZXRE4041DR?
All ZXRE4041DR units undergo pre-shipment inspection (PSI). If there is an issue with ZXRE4041DR, 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 ZXRE4041DR part is unused and in its original packaging.
Return procedure for ZXRE4041DR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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