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Analog Devices Inc./Maxim Integrated MAX6029EUK25+T
- Part No.:
- MAX6029EUK25+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX6029EUK25+T.pdf
- Description:
- IC VREF SERIES 0.15% SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:12,150
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Product details
Overview
MAX6029EUK25+T from Maxim Integrated is a micropower, low-dropout series-mode voltage reference delivering 2.500V output with ±0.15% initial accuracy, 30ppm/°C max temperature coefficient, and ultra-low 5.75µA max supply current in a 5-pin SOT23 package. It sources up to 4mA and sinks up to 1mA, operates from 2.7V to 12.6V input, and maintains stability with capacitive loads up to 10µF - ideal for precision ADC/DAC biasing in battery-powered instrumentation.
For engineers reviewing the MAX6029EUK25+T datasheet, MAX6029EUK25+T pinout, MAX6029EUK25+T application, or MAX6029EUK25+T equivalent, key selection criteria include guaranteed 2.500V output tolerance at +25°C (2.4963V to 2.5038V), 200mV dropout at 4mA load, 137µVRMS noise (10Hz–1kHz), and operation across –40°C to +85°C without external compensation.
Technical Context
The MAX6029EUK25+T uses a bandgap-based series architecture with internal compensation, eliminating need for external capacitors while ensuring stability with 0–10µF output capacitance during sourcing and 0–0.4µF during sinking. Its supply current remains tightly regulated (≤1.5µA/V variation) across the full 2.7V–12.6V input range.
It achieves precision via trimmed output voltage and low thermal hysteresis (140ppm), with long-term stability of 150ppm over 1000 hours. Load regulation is specified at 2.5–6.2µV/µA (0 to +4mA source / 0 to –1mA sink), and line regulation at ≤230µV/V from 2.7V to 12.6V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.500V ±0.15% at +25°C (2.4963V–2.5038V); enables 16-bit ADC accuracy over industrial temperature range |
| Temperature Coefficient | ≤30ppm/°C max; ensures <±0.75mV drift over –40°C to +85°C ambient |
| Supply Current | ≤5.75µA max; extends battery life in multi-year portable sensor nodes |
| Dropout Voltage | 200mV at 4mA load; allows operation from single-cell Li-ion (3.0V min) or two alkaline cells (3.2V min) |
| Noise (10Hz–1kHz) | 137µVRMS; supports high-resolution SAR and sigma-delta ADCs without added filtering |
| Load Regulation | 2.5–6.2µV/µA (0 to ±1mA); maintains reference integrity under dynamic sensor or DAC load switching |
| Stable Capacitive Load | 0–10µF (source), 0–0.4µF (sink); eliminates need for output capacitor in space-constrained designs |
Pinout & Package
MAX6029EUK25+T is housed in a RoHS-compliant 5-pin SOT23 package (outline 21-0057), occupying 70% less PCB area than comparable SO-8 devices. Pin 1 = IN, Pin 2 = GND, Pins 3 & 4 = N.C., Pin 5 = OUT.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN) | Positive Supply Input | Accepts 2.7V–12.6V; no input bypass required, but 0.1µF ceramic improves transient response |
| 2 (GND) | Analog Ground Reference | Must be connected to clean system ground; shared return for load and reference paths |
| 3, 4 (N.C.) | No Connection | Internally unconnected; may be left floating or tied to GND for mechanical stability |
| 5 (OUT) | Precision 2.500V Output | Delivers regulated voltage to ADC reference inputs, DAC bias, or analog circuitry; stable with 0–10µF capacitive loads |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 5.75µA max ensures >10-year battery life in 10µA average-power IoT sensors |
| No external compensation required | Internal capacitor guarantees stability with 0–10µF output capacitance - saves BOM cost and layout area |
| Low 200mV dropout | Enables direct regulation from partially discharged batteries (e.g., 2.9V Li-ion) while maintaining 2.500V output |
| ±0.15% initial accuracy | Reduces or eliminates post-production calibration in portable medical and test equipment |
| 30ppm/°C tempco | Meets 16-bit ADC full-scale error budget (<±1 LSB) over –40°C to +85°C without trimming |
Applications
| Battery-Powered Handheld Meters | Precision Data Acquisition Systems |
|---|---|
Use Scenario: Portable multimeter measuring DC voltage/current with 16-bit resolution and 24-hour battery life. IC Role / Device Role / Timing Role: Provides stable 2.500V reference for dual-slope or sigma-delta ADC, directly determining measurement accuracy and repeatability. Use Value: Ultra-low 5.75µA supply current extends battery life; 30ppm/°C tempco ensures <±0.5mV drift across operating temperature, meeting Class II meter specs. |
Use Scenario: Industrial sensor node digitizing thermocouple or strain gauge signals using 16-bit SAR ADC. IC Role / Device Role / Timing Role: Supplies excitation and reference voltage for ratiometric measurements, minimizing gain error sensitivity to supply variations. Use Value: 2.500V output matches common ADC full-scale ranges; 137µVRMS noise avoids degrading ENOB below 15.5 bits. |
| Low-Power Medical Wearables | Calibration-Free Sensor Modules |
Use Scenario: ECG patch monitoring heart rate and waveform morphology using ultra-low-power MCU and analog front-end. IC Role / Device Role / Timing Role: References ADC that digitizes amplified biopotential signals; must remain stable during motion-induced temperature shifts. Use Value: 140ppm thermal hysteresis and 150ppm long-term stability eliminate recalibration needs over device lifetime. |
Use Scenario: Factory-calibrated environmental sensor (humidity/temperature) with digital output and minimal host-side firmware. IC Role / Device Role / Timing Role: Sets absolute scaling for analog signal conditioning prior to ADC; defines end-product accuracy grade. Use Value: ±0.15% initial accuracy allows shipping calibrated units without individual trimming, reducing manufacturing test time and cost. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6126AASA25+ | Higher initial accuracy (±0.02%), lower noise (7.5µVRMS), but 12µA supply current and SO-8 only | Suitable for metrology-grade systems where power is secondary to precision | Select MAX6126AASA25+ when sub-0.05% total error budget is required and board space allows SO-8 |
| ADR3425ARJZ-R7 | Similar 2.5V output and SOT23-5 package, but 12ppm/°C tempco and 6.5µA supply current; requires 1µF output cap for stability | Better tempco for wide-temperature deployments, but adds capacitor and footprint | Choose ADR3425ARJZ-R7 if 12ppm/°C is mandatory and 1µF output cap is acceptable in layout |
Compared with MAX6029EUK25+T, MAX6126AASA25+ trades 2× higher supply current for 7× better accuracy and noise, while ADR3425ARJZ-R7 offers tighter tempco at the cost of mandatory output capacitance and slightly higher quiescent draw - making MAX6029EUK25+T optimal for space- and power-constrained 16-bit applications where ±0.15% is sufficient.
Availability
MAX6029EUK25+T is available at Aetrix Electronics and suitable for battery-powered handheld instruments, precision data acquisition systems, and low-power medical wearables requiring stable component supply with guaranteed long-term availability and RoHS compliance.
Supply support for MAX6029EUK25+T 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
Maxim Integrated (now part of Analog Devices) designs precision analog, mixed-signal, and power management ICs for demanding industrial, medical, and communications applications.
The MAX6029 series targets ultra-low-power, high-accuracy voltage references for portable and energy-harvested systems where board space, battery life, and calibration simplicity are critical design constraints.
FAQ
What is the guaranteed output voltage tolerance of MAX6029EUK25+T at +25°C?
The MAX6029EUK25+T guarantees an output voltage of 2.4963V to 2.5038V at +25°C, corresponding to ±0.15% initial accuracy. This specification is production-tested and applies specifically to the MAX6029EUK25+T variant in the 5-pin SOT23 package, as confirmed in the Electrical Characteristics table for MAX6029_25.
Does MAX6029EUK25+T require an external output capacitor for stability?
No, MAX6029EUK25+T does not require an external output capacitor for stability. It is internally compensated and remains stable with capacitive loads from 0 to 10µF when sourcing current and 0 to 0.4µF when sinking current. This eliminates BOM cost and layout area typically needed for reference decoupling.
What is the maximum supply current of MAX6029EUK25+T across its operating temperature range?
The MAX6029EUK25+T has a maximum supply current of 5.75µA over the full –40°C to +85°C operating temperature range. This value is specified at VIN = 2.7V and includes worst-case variation; typical supply current is lower and increases by ≤1.5µA/V across the input voltage range.
Can MAX6029EUK25+T operate from a single 3.0V lithium coin cell?
Yes, MAX6029EUK25+T can operate from a single 3.0V lithium coin cell. With a minimum input voltage of 2.7V and 200mV dropout at 4mA load, it delivers regulated 2.500V output down to 2.9V input - well within the 2.0V–3.0V discharge curve of CR2032 cells under light load conditions.
How does the noise performance of MAX6029EUK25+T impact 16-bit ADC accuracy?
With 137µVRMS noise (10Hz–1kHz) and 39µVP-P (0.1Hz–10Hz), MAX6029EUK25+T contributes <0.9 LSB of noise to a 2.5V full-scale 16-bit ADC (LSB = 38.1µV). This preserves effective number of bits (ENOB) above 15.5 bits, ensuring noise does not dominate the system's overall quantization error.
MAX6029EUK25+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- SC-74A, SOT-753
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Reference Type:
- Series
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 2.5V
- Voltage - Output (Max):
- -
- Current - Output:
- 4 mA
- Tolerance:
- ±0.15%
- Temperature Coefficient:
- 30ppm/°C
- Noise - 0.1Hz to 10Hz:
- 39µVp-p
- Noise - 10Hz to 10kHz:
- 137µVrms
- Voltage - Input:
- 2.7V ~ 12.6V
- Current - Supply:
- 5.75µA
- Current - Cathode:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
MAX6029EUK25+T FAQ
1.How can I place an order for MAX6029EUK25+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6029EUK25+T 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 MAX6029EUK25+T reliable?
The price and inventory of MAX6029EUK25+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6029EUK25+T is usually 5 days.
3.What payment methods are accepted for MAX6029EUK25+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6029EUK25+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6029EUK25+T?
MAX6029EUK25+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6029EUK25+T 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 MAX6029EUK25+T?
For technical support, including MAX6029EUK25+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6029EUK25+T requirements.
6.How does Aetrix verify that MAX6029EUK25+T is sourced from the original manufacturer or authorized distributors?
All MAX6029EUK25+T 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 MAX6029EUK25+T meets industry standards.
7.What is the process for return or replacement of MAX6029EUK25+T?
All MAX6029EUK25+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6029EUK25+T, 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 MAX6029EUK25+T part is unused and in its original packaging.
Return procedure for MAX6029EUK25+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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