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Analog Devices Inc./Maxim Integrated MAX6029EUK21+T
- Part No.:
- MAX6029EUK21+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX6029EUK21+T.pdf
- Description:
- IC VREF SERIES 0.15% SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,338
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Product details
Overview
MAX6029EUK21+T from Maxim Integrated is a micropower, low-dropout series-mode voltage reference delivering 2.048V output with ±0.15% initial accuracy, 30ppm/°C max temperature coefficient, and ultra-low 5.25µA max supply current in a 5-pin SOT23 package. It sources up to 4mA and sinks up to 1mA, operates from 2.5V to 12.6V input, and features 200mV dropout-enabling precision analog sensing and data acquisition in battery-powered instrumentation.
For engineers reviewing the MAX6029EUK21+T datasheet, MAX6029EUK21+T pinout, MAX6029EUK21+T application, or MAX6029EUK21+T equivalent, key selection criteria include guaranteed 2.048V output tolerance at +25°C (2.0449V–2.0511V), stability with capacitive loads up to 10µF, no external compensation requirement, and operation across –40°C to +85°C.
Technical Context
The MAX6029EUK21+T uses a bandgap-based series-mode architecture with internal compensation, eliminating need for external capacitors while maintaining stability under load capacitance ranging from 0 to 10µF during sourcing and up to 0.4µF during sinking. Its BiCMOS process enables ultra-low quiescent current with minimal supply-voltage dependence (≤1.5µA/V variation).
Designed for high-accuracy DC biasing, it delivers tight line regulation (≤200µV/V) and load regulation (≤0.7µV/µA sourcing, ≤5.5µV/µA sinking), with turn-on settling to 0.1% of final value in 450µs. Thermal hysteresis is limited to 140ppm, and long-term drift is 150ppm over 1000 hours at +25°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.048V nominal; 2.0449V–2.0511V at +25°C - ensures 12-bit ADC full-scale accuracy over temperature |
| Initial Accuracy | ±0.15% max - guarantees absolute reference error ≤3.07mV at room temperature |
| Temp Coefficient | 30ppm/°C max - limits drift to ≤±2.55mV over –40°C to +85°C range |
| Supply Current | 5.25µA max - enables >10-year battery life in 10µA-sleep systems |
| Dropout Voltage | 200mV at 4mA load - allows operation from 2.248V input, critical for single-cell Li-ion or alkaline systems |
| Noise (0.1–10Hz) | 30µVP-P - supports 16-bit resolution without added filtering in precision measurement |
| Load Current | Sources 4mA / sinks 1mA - drives typical SAR ADC reference inputs and op-amp bias networks |
Pinout & Package
MAX6029EUK21+T is housed in a RoHS-compliant 5-pin SOT23 package (outline 21-0057), occupying 70% less board area than SO-8 alternatives. 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 2.5V–12.6V; no bypass capacitor required, but 0.1µF ceramic improves transient response |
| 2 (GND) | Analog Ground Reference | Must be low-impedance connection to system ground plane; separates reference return from power return paths |
| 3, 4 (N.C.) | No Connection | Leaving unconnected or tied to GND has no electrical effect; no internal circuitry attached |
| 5 (OUT) | Precision Reference Output | Delivers stable 2.048V; stable with 0–10µF capacitive loads when sourcing, 0–0.4µF when sinking |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low supply current | 5.25µA max enables multi-year operation on coin-cell batteries in portable sensors |
| No external compensation | Internal capacitor eliminates need for external components-reduces BOM count and layout complexity |
| Low dropout voltage | 200mV at 4mA allows use with deeply discharged batteries or low-headroom LDO outputs |
| Stable with large capacitive loads | Operates reliably with 10µF output capacitance-supports low-ESR ceramic or polymer caps for noise filtering |
| Miniature SOT23 footprint | 1.6mm × 2.9mm body size saves space in handheld medical and test equipment |
Applications
| Portable Data Loggers | Industrial Sensor Transmitters |
|---|---|
Use Scenario: Battery-powered environmental sensor node measuring temperature, humidity, and pressure with 16-bit ADC sampling every 10 seconds. IC Role / Device Role / Timing Role: Provides stable 2.048V reference for successive-approximation ADC conversion, ensuring consistent LSB scaling across operating temperature. Use Value: Enables <1 LSB total error over –25°C to +70°C without calibration, extending field deployment intervals and reducing firmware overhead. |
Use Scenario: 4–20mA loop-powered transmitter converting RTD or strain-gauge signals in factory automation. IC Role / Device Role / Timing Role: Supplies excitation and reference voltage for precision instrumentation amplifier and DAC feedback path. Use Value: Maintains 0.1% full-scale accuracy despite 2.5V–12.6V loop supply variation and ambient temperature swings. |
| Handheld Multimeters | Medical Vital Sign Monitors |
Use Scenario: 4½-digit handheld DMM using dual-slope integration and auto-ranging front-end. IC Role / Device Role / Timing Role: Generates precise 2.048V reference for integrator ramp and comparator threshold in analog-to-digital conversion. Use Value: Delivers <0.02% reading error over battery discharge cycle, meeting IEC 61010-1 Class II accuracy requirements. |
Use Scenario: Portable ECG device acquiring biopotential signals with 24-bit sigma-delta ADC. IC Role / Device Role / Timing Role: Supplies low-noise reference for ADC and analog front-end gain stages to preserve signal integrity. Use Value: 30µVP-P (0.1–10Hz) noise contributes <0.5µV RMS to input-referred noise budget-critical for sub-µV cardiac waveform fidelity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REF3020AIDBZR | 2.048V output, ±0.2% initial accuracy, 50ppm/°C tempco, 50µA supply current | Higher power consumption and drift limit use in ultra-low-power or wide-temperature industrial designs | Select REF3020AIDBZR only if higher output current (25mA) is required and supply current is not constrained |
| ADR3420ARJZ-R7 | 2.048V output, ±0.1% initial accuracy, 10ppm/°C tempco, 120µA supply current, 6-pin SOT23 | Lower drift but 23× higher quiescent current; requires external 1µF output cap for stability | Choose ADR3420ARJZ-R7 when ultimate temperature stability is prioritized over battery life or board space |
Compared with REF3020AIDBZR and ADR3420ARJZ-R7, MAX6029EUK21+T uniquely balances ultra-low 5.25µA supply current, 30ppm/°C drift, and capacitor-free operation in the smallest SOT23 footprint-making it optimal for space- and energy-constrained precision measurement.
Availability
MAX6029EUK21+T is available at Aetrix Electronics and suitable for portable instrumentation, industrial sensor transmitters, handheld multimeters, and medical vital sign monitors requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for MAX6029EUK21+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 high-performance analog and mixed-signal ICs for precision, power, and interface applications, with emphasis on reliability and integration.
The MAX6029 series was developed specifically for ultra-low-power, high-accuracy voltage referencing in battery-operated and space-constrained systems-targeting data converters, sensor signal chains, and portable test equipment.
FAQ
What is the output voltage tolerance of MAX6029EUK21+T at +25°C?
The MAX6029EUK21+T guarantees an output voltage of 2.0449V to 2.0511V at +25°C, corresponding to ±0.15% initial accuracy. This specification is production-tested and ensures compatibility with 12-bit ADCs requiring ≤1 LSB error at 2.048V full scale. The MAX6029EUK21+T maintains this accuracy across its –40°C to +85°C operating range with a maximum temperature coefficient of 30ppm/°C.
Does MAX6029EUK21+T require an external output capacitor for stability?
No, the MAX6029EUK21+T does not require an external output capacitor for stability due to its internally compensated design. It remains stable driving capacitive loads from 0 to 10µF when sourcing current and from 0 to 0.4µF when sinking current. Adding a capacitor (e.g., 1µF ceramic) may improve transient response in step-load applications but is optional-not mandatory-for basic operation.
What is the minimum input voltage needed for MAX6029EUK21+T to regulate properly?
The MAX6029EUK21+T requires a minimum input voltage of 2.5V to maintain regulation. At 4mA load, its dropout voltage is 200mV, meaning the input must be ≥2.248V (2.048V + 0.200V) to sustain nominal output. The device is specified to operate from 2.5V to 12.6V input, with supply current remaining stable across this range (variation ≤1.5µA/V). Below 2.5V, output voltage drops linearly with input.
Can MAX6029EUK21+T sink current, and how much?
Yes, the MAX6029EUK21+T can sink up to 1mA of load current while maintaining output regulation and specified accuracy. This capability supports applications requiring bidirectional reference buffering, such as driving the inverting input of a precision op-amp or interfacing with current-steering DACs. Load regulation under sinking conditions is specified at ≤5.5µV/µA, ensuring predictable behavior even near dropout.
Is MAX6029EUK21+T RoHS-compliant and lead-free?
Yes, MAX6029EUK21+T is RoHS-compliant and lead-free, as indicated by the "+T" suffix in its ordering code. The device uses a matte-tin finish on its SOT23 package terminals and conforms to JEDEC J-STD-020 moisture sensitivity level 1 (MSL1) standards. It is rated for reflow soldering per IPC/JEDEC J-STD-020, with peak temperature up to +260°C.
MAX6029EUK21+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):
- 2.048V
- Voltage - Output (Max):
- -
- Current - Output:
- 4 mA
- Tolerance:
- ±0.15%
- Temperature Coefficient:
- 30ppm/°C
- Noise - 0.1Hz to 10Hz:
- 30µVp-p
- Noise - 10Hz to 10kHz:
- 115µVrms
- Voltage - Input:
- 2.5V ~ 12.6V
- Current - Supply:
- 5.25µA
- Current - Cathode:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
MAX6029EUK21+T FAQ
1.How can I place an order for MAX6029EUK21+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6029EUK21+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 MAX6029EUK21+T reliable?
The price and inventory of MAX6029EUK21+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6029EUK21+T is usually 5 days.
3.What payment methods are accepted for MAX6029EUK21+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6029EUK21+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6029EUK21+T?
MAX6029EUK21+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6029EUK21+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 MAX6029EUK21+T?
For technical support, including MAX6029EUK21+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6029EUK21+T requirements.
6.How does Aetrix verify that MAX6029EUK21+T is sourced from the original manufacturer or authorized distributors?
All MAX6029EUK21+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 MAX6029EUK21+T meets industry standards.
7.What is the process for return or replacement of MAX6029EUK21+T?
All MAX6029EUK21+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6029EUK21+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 MAX6029EUK21+T part is unused and in its original packaging.
Return procedure for MAX6029EUK21+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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