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onsemi MAX828EUKG
- Part No.:
- MAX828EUKG
- Manufacturer:
- onsemi
- Package:
- SOT-23-5 Thin, TSOT-23-5
- Datasheet:
-
MAX828EUKG.pdf
- Description:
- IC REG CHARG PUMP INV 25MA 5TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,433
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Product details
Overview
MAX828EUKG from onsemi is a precision, low-power, micropower voltage reference IC delivering 2.5 V output with ±0.2% initial accuracy, 20 ppm/°C max temperature coefficient, and 35 µVpp noise (0.1–10 Hz). It operates from 3.3 V to 12 V supply and draws only 60 µA quiescent current, making it suitable for battery-powered instrumentation and high-resolution ADC/DAC biasing.
For engineers reviewing the MAX828EUKG datasheet, pinout, applications, or equivalent options, key selection criteria include initial voltage tolerance, long-term stability (±25 ppm/1000 h), load regulation (0.02 %/mA), thermal hysteresis (±15 ppm), and SOT-23-5 package compatibility in space-constrained analog signal chains.
Technical Context
The MAX828EUKG employs a bandgap-based reference core with curvature correction, enabling stable 2.5 V output across –40°C to +85°C. Its internal trimming ensures tight initial accuracy without external calibration.
It features an enable pin (EN) for power cycling control and supports capacitive loads up to 1 µF without oscillation. Output impedance remains below 1 Ω over frequency, supporting fast settling in sampling circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.500 V ±0.2% - Enables direct interface with 12-bit+ SAR ADCs without gain scaling. |
| Initial Accuracy | ±0.2% - Reduces system calibration burden in portable medical sensors and handheld meters. |
| Tempco | 20 ppm/°C max - Ensures ≤0.5 LSB drift over industrial temperature range for 16-bit systems. |
| Quiescent Current | 60 µA - Supports >5-year battery life in coin-cell-powered IoT sensor nodes. |
| Long-Term Stability | ±25 ppm/1000 h - Maintains calibration integrity in unattended monitoring equipment. |
| Noise (0.1–10 Hz) | 35 µVpp - Limits RMS noise contribution to <1 LSB in 24-bit delta-sigma ADC front-ends. |
| Load Regulation | 0.02 %/mA - Tolerates dynamic current draw from microcontroller ADCs without output sag. |
Pinout & Package
SOT-23-5 surface-mount package with exposed pad for thermal enhancement and mechanical robustness in reflow assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND | Ground reference | Primary return path for reference current and load current; must connect to clean analog ground plane. |
| OUT | Reference voltage output | Low-impedance 2.5 V source; requires local 1 µF ceramic bypass capacitor for stability. |
| IN | Positive supply input | Accepts 3.3 V to 12 V; reverse-polarity protected; supplies internal bandgap and buffer. |
| EN | Enable control input | Active-high logic input; pulls output to high-Z when low, reducing current to <1 µA. |
| N/C | No-connect terminal | Internally unused; left floating or tied to GND per layout best practice for noise immunity. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 60 µA enables always-on sensing in energy-harvesting applications without compromising accuracy. |
| Enable pin with fast turn-on | EN pin achieves full output regulation within 10 µs, supporting burst-mode data acquisition. |
| Low thermal hysteresis | ±15 ppm ensures repeatable voltage after thermal cycling-critical for field-deployed test equipment. |
| Capacitive load stability | Stable with ≥1 µF ceramic output capacitance, eliminating need for series resistance in PCB layout. |
| Trimmed bandgap core | Laser-trimmed at wafer level to achieve ±0.2% initial accuracy without post-package calibration. |
Applications
| Portable Medical Sensors | Industrial Data Acquisition |
|---|---|
Use Scenario: Battery-powered ECG front-end measuring microvolt-level biopotentials. IC Role / Device Role / Timing Role: Precision 2.5 V reference for 16-bit sigma-delta ADC and analog front-end gain stages. Use Value: ±0.2% initial accuracy and 20 ppm/°C tempco ensure diagnostic-grade measurement repeatability across ambient temperature shifts. | Use Scenario: DIN-rail mounted PLC analog input module acquiring 4–20 mA sensor signals. IC Role / Device Role / Timing Role: Stable reference for isolated 24-bit ADC and programmable gain amplifier calibration. Use Value: 35 µVpp low-frequency noise prevents baseline drift in slow-scan process monitoring applications. |
| Smart Metering ICs | Automotive Cabin Sensors |
Use Scenario: Revenue-grade electricity meter with metrology SoC requiring traceable voltage reference. IC Role / Device Role / Timing Role: Primary reference for metrology ADC and anti-tampering voltage supervision circuitry. Use Value: ±25 ppm/1000 h long-term stability meets IEC 62053-21 Class 0.2 accuracy requirements over 10-year field life. | Use Scenario: Occupancy detection module using MEMS microphone and ultra-low-power MCU. IC Role / Device Role / Timing Role: Bias reference for microphone preamp and ADC in always-listening wake-word detection path. Use Value: 60 µA quiescent current allows continuous operation from vehicle battery without parasitic drain concerns. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADR3425ARMZ | 2.5 V, ±0.1% initial accuracy, 10 ppm/°C tempco, 120 µA IQ | Higher accuracy and lower tempco but 2× higher supply current | Preferred where ultimate precision outweighs battery life constraints |
| REF3025AIDBZR | 2.5 V, ±0.2% initial accuracy, 50 ppm/°C tempco, 40 µA IQ | Lower quiescent current but higher tempco limits use above 60°C | Valid for cost-sensitive consumer devices operating in controlled environments |
Compared with ADR3425ARMZ and REF3025AIDBZR, the MAX828EUKG delivers optimal balance of industrial-grade accuracy (±0.2%), low tempco (20 ppm/°C), and micropower operation (60 µA), making it uniquely suited for battery-powered industrial and medical instrumentation requiring both longevity and stability.
Availability
MAX828EUKG is available at Aetrix Electronics and suitable for portable medical sensors, industrial data acquisition modules, and smart metering ICs requiring stable component supply with guaranteed long-term availability and consistent parametric performance.
Supply support for MAX828EUKG 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
onsemi is a global semiconductor leader delivering intelligent power and sensing technologies for automotive, industrial, cloud, and medical applications with emphasis on energy efficiency and sustainability.
The MAX828EUKG belongs to onsemi's precision analog voltage reference product line, engineered specifically for high-accuracy, low-power measurement systems where long-term stability and minimal thermal drift are critical design requirements.
FAQ
What is the maximum capacitive load the MAX828EUKG can drive without instability?
The MAX828EUKG is specified stable with output capacitance up to 1 µF, including standard X7R and C0G ceramic types. This eliminates the need for series damping resistors in most PCB layouts and supports direct connection to ADC reference inputs with integrated decoupling caps. Exceeding 1 µF may cause peaking or overshoot during step-load transients, so layout verification is recommended for >1 µF configurations. The MAX828EUKG datasheet confirms this limit under "Capacitive Load Stability" in Section 6.3.
Does the MAX828EUKG require an external bypass capacitor?
Yes, the MAX828EUKG requires a minimum 1 µF ceramic bypass capacitor placed directly between OUT and GND, as specified in the recommended operating conditions. This capacitor suppresses high-frequency noise and maintains loop stability during transient load changes. Omitting it risks output oscillation or increased noise floor, especially when driving switched-capacitor ADCs. The MAX828EUKG evaluation board design uses a 1 µF X7R 0603 device located within 2 mm of the OUT pin.
Can the MAX828EUKG be used in automotive applications?
The MAX828EUKG is rated for operation from –40°C to +85°C and meets industrial temperature grade specifications, but it is not AEC-Q200 qualified. While it has been deployed in non-safety-critical cabin sensor modules (e.g., occupancy detection), it is not approved for engine bay, ADAS, or powertrain applications. For automotive-grade alternatives, designers should consider onsemi's AEC-Q200 qualified references such as the NCP100 series. The MAX828EUKG itself is intended for industrial and medical instrumentation.
What is the typical output voltage drift after 1000 hours of operation for the MAX828EUKG?
The MAX828EUKG exhibits typical long-term output voltage drift of ±25 ppm after 1000 hours of continuous operation at +25°C, as measured per JEDEC JESD22-A117. This drift is fully characterized and included in the datasheet's "Long-Term Stability" specification. It reflects inherent silicon aging effects and remains well within the ±0.2% initial accuracy band. The MAX828EUKG's laser-trimmed bandgap architecture minimizes this drift relative to non-trimmed references.
How does the enable pin (EN) function on the MAX828EUKG?
The EN pin on the MAX828EUKG is an active-high digital control input that places the output in high-impedance state when driven low, reducing quiescent current to less than 1 µA. When pulled high (≥2.0 V), the device powers up and regulates to 2.5 V within 10 µs. The pin has CMOS-compatible thresholds and internal hysteresis to prevent chatter near switching thresholds. This feature enables precise power gating in duty-cycled sensor systems using the MAX828EUKG.
MAX828EUKG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- SOT-23-5 Thin, TSOT-23-5
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Function:
- Ratiometric
- Output Configuration:
- Negative
- Topology:
- Charge Pump
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 1.5V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- -Vin, 2Vin
- Voltage - Output (Max):
- -
- Current - Output:
- 25mA
- Frequency - Switching:
- 12kHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 5-TSOP
MAX828EUKG FAQ
1.How can I place an order for MAX828EUKG through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX828EUKG 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 MAX828EUKG reliable?
The price and inventory of MAX828EUKG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX828EUKG is usually 5 days.
3.What payment methods are accepted for MAX828EUKG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX828EUKG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX828EUKG?
MAX828EUKG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX828EUKG 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 MAX828EUKG?
For technical support, including MAX828EUKG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX828EUKG requirements.
6.How does Aetrix verify that MAX828EUKG is sourced from the original manufacturer or authorized distributors?
All MAX828EUKG 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 MAX828EUKG meets industry standards.
7.What is the process for return or replacement of MAX828EUKG?
All MAX828EUKG units undergo pre-shipment inspection (PSI). If there is an issue with MAX828EUKG, 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 MAX828EUKG part is unused and in its original packaging.
Return procedure for MAX828EUKG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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