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Diodes Incorporated ZXRE4041FFTC
- Part No.:
- ZXRE4041FFTC
- Manufacturer:
- Diodes Incorporated
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
ZXRE4041FFTC.pdf
- Description:
- IC VREF SHUNT 3% SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:1,511
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Product details
Overview
ZXRE4041FFTC 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 and portable instrumentation power rails.
For engineers reviewing the ZXRE4041FFTC datasheet, ZXRE4041FFTC pinout, ZXRE4041FFTC application, or ZXRE4041FFTC equivalent, key selection criteria include knee current (30 µA), reverse dynamic impedance (0.2–0.6 Ω), wideband noise (60 µVrms), capacitive load stability, and SOT23-3 pin compatibility with LM4041.
Technical Context
The ZXRE4041FFTC implements a two-terminal shunt topology with bandgap-derived reference core, operating as a precision current-sink device requiring external cathode resistor for regulation. It achieves low drift via curvature-compensated bandgap design and internal trimming.
Its unconditionally stable architecture supports direct connection to capacitive loads up to 10 µF without oscillation, and maintains regulation across −40°C to +125°C ambient while drawing sub-100 µA quiescent current at light loads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reference Voltage | 1.225 V ±0.5% (C grade) - defines accuracy of ADC/DAC biasing and sensor excitation circuits |
| Tempco | 20 ppm/°C typical - ensures ≤±1.5 mV drift over −40°C to +85°C industrial range |
| Knee Current | 30 µA - minimum current required to initiate regulation; enables ultra-low-power wake-up circuits |
| Dynamic Impedance | 0.2–0.6 Ω at 1 mA - provides low AC impedance for high-PSRR analog subsystems |
| Noise (10Hz–10kHz) | 60 µVrms - limits quantization error in 16-bit+ data acquisition systems |
| Operating Current Range | 30 µA to 12 mA - supports both battery-critical and high-accuracy supply configurations |
Pinout & Package
SOT23-3 package: 1.4 mm × 2.2 mm footprint, 1.12 mm height, gull-wing leads, RoHS-compliant green molding compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | Current sink return path | Connected to system ground; must be low-impedance for stable regulation |
| Cathode (Pin 2) | Reference output node | Delivers regulated 1.225 V when current flows into this terminal via external resistor |
| No-Connect (Pin 3) | Unused terminal | Internally floating; left unconnected per datasheet - not tied to Anode or Cathode |
Key Features
| Feature | Design Value |
|---|---|
| Shunt topology with no input pin | Eliminates need for dedicated VIN rail - simplifies biasing in single-supply sensor nodes |
| Unconditional capacitive load stability | Enables direct coupling to ADC reference inputs or op-amp feedback networks without phase compensation |
| 0.5% initial tolerance (C grade) | Reduces or eliminates post-manufacturing calibration in portable medical and test equipment |
| 330 mW power dissipation rating | Supports operation up to 12 mA at 1.225 V without thermal derating in SOT23 |
Applications
| Battery-Powered Instrumentation | Precision Data Acquisition |
|---|---|
Use Scenario: Handheld multimeter using single-cell Li-ion supply (2.7–4.2 V) with 16-bit SAR ADC. IC Role / Device Role / Timing Role: Shunt reference providing stable 1.225 V reference for ADC VREF input. Use Value: 20 ppm/°C tempco and 60 µVrms noise ensure <±0.01% measurement linearity across operating temperature. | Use Scenario: Isolated industrial sensor transmitter with 4–20 mA loop powered by 24 V DC. IC Role / Device Role / Timing Role: Precision bias source for bridge sensor amplifier and DAC output stage. Use Value: 30 µA knee current allows reference activation during low-power sleep mode, enabling fast wake-up response. |
| Portable Communication Devices | Notebook System Power Monitoring |
Use Scenario: Bluetooth LE audio headset requiring low-noise microphone bias and ADC reference. IC Role / Device Role / Timing Role: Dual-role reference: supplies clean 1.225 V for MEMS mic preamp and ADC reference. Use Value: Unconditional stability with 100 nF ceramic bypass enables compact layout without stability risk. | Use Scenario: Embedded controller monitoring CPU core voltage (0.8–1.2 V) and memory rail (1.2 V). IC Role / Device Role / Timing Role: Fixed reference for ratiometric voltage divider scaling into MCU ADC. Use Value: ±0.5% tolerance eliminates software calibration for factory-set voltage thresholds. |
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 (1.24–10 V); higher 75 ppm/°C max tempco; 65 µVrms noise | Requires external resistor network; less suitable for fixed 1.225 V systems | Select only if adjustable reference or higher output voltage is required |
| MAX6008AEUR+T | Fixed 1.25 V output; 25 ppm/°C max tempco; 50 µVrms noise; 1.5 µA shutdown current | Lower noise but different nominal voltage; requires PCB redesign for 1.25 V vs. 1.225 V | Prefer when 1.25 V is acceptable and sub-µA shutdown is critical |
Compared with LM4041CIM3X-ADJ and MAX6008AEUR+T, the ZXRE4041FFTC offers exact 1.225 V output with tighter C-grade tolerance and lower knee current - making it optimal for space-constrained, fixed-voltage, micropower applications where 1.225 V is specified in the signal chain.
Availability
ZXRE4041FFTC is available at Aetrix Electronics and suitable for battery-powered instrumentation, precision data acquisition systems, and portable communication devices requiring stable component supply with guaranteed long-term availability.
Supply support for ZXRE4041FFTC 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 voltage reference product line, engineered specifically for ultra-low-power, high-accuracy shunt regulation in space- and current-constrained applications.
FAQ
What is the correct biasing configuration for ZXRE4041FFTC?
The ZXRE4041FFTC operates as a two-terminal shunt reference: connect the Cathode (Pin 2) to the node requiring regulation, and the Anode (Pin 1) to ground. A series resistor between supply and Cathode sets operating current. Pin 3 is unused and must remain open.
Can ZXRE4041FFTC drive a 100 nF capacitor directly?
Yes - the device is unconditionally stable with capacitive loads up to at least 10 µF, as confirmed in the datasheet's Typical Characteristics section. No series resistance or isolation is needed for 100 nF ceramic capacitors used in ADC reference decoupling.
How does the 30 µA knee current affect low-power system design?
The 30 µA knee current defines the minimum current at which regulation begins. In sleep-mode circuits, maintaining ≥30 µA through the reference ensures immediate voltage stability upon wake-up, avoiding settling delays that would occur if starting from sub-knee current.
Is ZXRE4041FFTC pin-compatible with standard LM4041 variants?
Yes - ZXRE4041FFTC uses the same SOT23-3 footprint and pinout (Anode–Cathode–NC) as LM4041CIM3X and LM4041DIM3X, enabling drop-in replacement in existing layouts without PCB modification.
ZXRE4041FFTC 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):
- 1.225V
- Voltage - Output (Max):
- -
- Current - Output:
- 12 mA
- Tolerance:
- ±3%
- 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
ZXRE4041FFTC FAQ
1.How can I place an order for ZXRE4041FFTC through Aetrix?
Please submit a Request for Quotation (RFQ) for ZXRE4041FFTC 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 ZXRE4041FFTC reliable?
The price and inventory of ZXRE4041FFTC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ZXRE4041FFTC is usually 5 days.
3.What payment methods are accepted for ZXRE4041FFTC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ZXRE4041FFTC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ZXRE4041FFTC?
ZXRE4041FFTC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ZXRE4041FFTC 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 ZXRE4041FFTC?
For technical support, including ZXRE4041FFTC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ZXRE4041FFTC requirements.
6.How does Aetrix verify that ZXRE4041FFTC is sourced from the original manufacturer or authorized distributors?
All ZXRE4041FFTC 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 ZXRE4041FFTC meets industry standards.
7.What is the process for return or replacement of ZXRE4041FFTC?
All ZXRE4041FFTC units undergo pre-shipment inspection (PSI). If there is an issue with ZXRE4041FFTC, 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 ZXRE4041FFTC part is unused and in its original packaging.
Return procedure for ZXRE4041FFTC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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