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Analog Devices Inc./Maxim Integrated MAX6029EUK33+T
- Part No.:
- MAX6029EUK33+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX6029EUK33+T.pdf
- Description:
- IC VREF SERIES 0.15% SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:6,764
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Product details
Overview
MAX6029EUK33+T from Maxim Integrated is a micropower, low-dropout series-mode voltage reference delivering 3.300V output with ±0.15% initial accuracy, 30ppm/°C max temperature coefficient, and ultra-low 7.25µA max supply current. It sources up to 4mA and sinks up to 1mA, operates from 3.5V to 12.6V input, and features 200mV dropout-ideal for precision ADC/DAC biasing in battery-powered instrumentation.
For engineers reviewing the MAX6029EUK33+T datasheet, MAX6029EUK33+T pinout, MAX6029EUK33+T application, or MAX6029EUK33+T equivalent, this page delivers verified specifications, SOT23-5 package details, load regulation (2.4–7 µV/µA), noise performance (174 µVRMS, 10Hz–1kHz), and real-world stability with capacitive loads up to 10µF-enabling rapid selection for low-power, high-accuracy analog systems.
Technical Context
The MAX6029EUK33+T uses a bandgap-based series architecture with internal compensation, eliminating external capacitors while maintaining stability across 0–10µF output capacitance. Its design targets ultra-low quiescent current (7.25µA max) without sacrificing precision: line regulation is 30–270 µV/V over 3.5V–12.6V input, and load regulation remains under 7 µV/µA across full sourcing/sinking range.
It achieves 3.300V nominal output via laser-trimmed resistive networks, with thermal hysteresis limited to 140ppm and long-term drift of 150ppm over 1000 hours. The device is specified across –40°C to +85°C and exhibits 38dB ripple rejection at 120Hz-critical for noisy supply environments in portable measurement gear.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 3.2951V to 3.3050V at +25°C - ensures ≤0.15% absolute error for 12-bit+ data converters |
| Temp Coefficient | 30ppm/°C max - guarantees ≤±1.26mV drift over –40°C to +85°C operating range |
| Supply Current | 7.25µA max - enables >10-year battery life in 10µA-sleep systems with minimal self-heating |
| Dropout Voltage | 200mV at 4mA load - allows operation from 3.5V supply while regulating 3.3V output |
| Noise (10Hz–1kHz) | 174µVRMS - supports <16-bit ENOB in precision SAR ADCs without additional filtering |
| Load Regulation | 2.4–7 µV/µA - maintains output stability during dynamic current draw in sensor front-ends |
| Ripple Rejection | 38dB at 120Hz - suppresses AC-coupled supply noise common in switched-capacitor power rails |
Pinout & Package
MAX6029EUK33+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 3.5V–12.6V; no bypass capacitor required but 0.1µF ceramic improves transient response |
| 2 (GND) | Analog Ground Reference | Must be connected to clean system ground plane; 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 Reference Output | Delivers stable 3.300V; drives capacitive loads up to 10µF when sourcing, up to 0.4µF when sinking |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low supply current | 7.25µA max - reduces standby power in always-on IoT sensors and handheld meters |
| No external compensation | Internal capacitor ensures stability with 0–10µF output capacitance - eliminates layout-sensitive tuning |
| Low dropout operation | 200mV at 4mA - enables use with single-cell Li-ion (3.0–3.6V) or regulated 3.3V rails |
| High sink/source capability | Sources 4mA / sinks 1mA - directly drives ADC reference inputs, op-amp bias networks, and DAC buffers |
| Thermal hysteresis control | 140ppm - minimizes calibration drift after thermal cycling in field-deployed test equipment |
Applications
| Battery-Powered Data Loggers | Portable Multimeters |
|---|---|
Use Scenario: Continuous 16-bit ADC sampling in solar-powered environmental monitors with 10-year battery target. IC Role / Device Role / Timing Role: Provides stable 3.300V reference for SAR ADC and microcontroller VREF, rejecting supply ripple from buck converter. Use Value: 7.25µA supply current extends coin-cell life beyond 8 years; 30ppm/°C TC prevents calibration drift across desert-to-alpine temperature ranges. |
Use Scenario: Handheld 4½-digit DMM requiring sub-0.01% absolute accuracy across –10°C to +50°C ambient. IC Role / Device Role / Timing Role: Precision voltage reference for dual-slope integrator and auto-zero amplifier stages. Use Value: ±0.15% initial accuracy and 140ppm thermal hysteresis eliminate need for field recalibration; SOT23-5 footprint saves space in compact chassis. |
| Medical Sensor Signal Chains | Industrial 4–20mA Transmitters |
Use Scenario: Low-power ECG front-end with integrated ADC, operating from CR2032 battery for wearable patches. IC Role / Device Role / Timing Role: Supplies 3.300V reference to instrumentation amplifier gain-setting network and ADC reference input. Use Value: 174µVRMS noise ensures ≥14.5 ENOB; stability with 1µF load capacitance simplifies anti-aliasing filter design. |
Use Scenario: Loop-powered 4–20mA transmitter with HART modulation, constrained by 3.5–24V loop voltage. IC Role / Device Role / Timing Role: Regulates 3.300V rail for microcontroller, DAC, and signal conditioning circuitry from varying loop supply. Use Value: 200mV dropout allows operation down to 3.5V loop voltage; 38dB 120Hz ripple rejection prevents HART signal corruption. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADR3433ARJZ-R7 | 3.3V output, 10ppm/°C max TC, 4.5µA supply current, but requires 1µF output capacitor for stability | Better TC and lower IQ, yet higher board area and layout sensitivity due to mandatory external cap | Prefer for ultra-low-drift lab-grade instruments where capacitor placement is controlled; avoid in space-constrained wearables |
| REF3333AIDBVR | 3.3V output, 30ppm/°C max TC, 5.7µA supply current, stable with 0.1–10µF loads, but only 2mA source capability | Lower IQ and same TC, but insufficient drive for 4mA ADC references or op-amp bias networks | Select when driving light loads (<2mA); not suitable for direct ADC VREF in high-speed or buffered designs |
Compared with ADR3433ARJZ-R7 and REF3333AIDBVR, MAX6029EUK33+T uniquely balances 4mA sourcing, capacitor-free stability, and SOT23-5 size-making it optimal for battery-powered systems needing both precision and robustness without layout overhead.
Availability
MAX6029EUK33+T is available at Aetrix Electronics and suitable for battery-powered instrumentation, portable medical sensors, and industrial 4–20mA transmitters requiring stable component supply with guaranteed long-term availability and RoHS compliance.
Supply support for MAX6029EUK33+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 and mixed-signal ICs for demanding industrial, medical, and communications applications.
The MAX6029EUK33+T belongs to the Ultra-Low-Power Precision Series voltage reference family, engineered specifically for extended-battery-life systems where accuracy, stability, and minimal board area are critical.
FAQ
What is the maximum load current the MAX6029EUK33+T can source and sink?
The MAX6029EUK33+T can source up to 4mA and sink up to 1mA of load current while maintaining output accuracy within specification. This capability allows it to directly drive ADC reference inputs, op-amp bias networks, and small logic interfaces without external buffering. Exceeding these limits risks increased dropout voltage and potential regulation loss, especially near the 3.5V minimum input voltage.
Does the MAX6029EUK33+T require an external output capacitor for stability?
No, the MAX6029EUK33+T does not require an external output capacitor for stability-it integrates internal compensation and is specified stable with capacitive loads from 0 to 10µF when sourcing current and 0 to 0.4µF when sinking. Adding a capacitor (e.g., 0.1–1µF) may improve transient response in high-dynamic-load applications, but it is never mandatory for basic operation.
What is the supply voltage range for the MAX6029EUK33+T?
The MAX6029EUK33+T operates from a supply voltage range of 3.5V to 12.6V. Its 200mV dropout voltage means it regulates 3.300V output down to 3.5V input-enabling compatibility with single-cell Li-ion batteries (nominal 3.6V, discharge to ~3.0V) when paired with a low-headroom LDO pre-regulator or used in systems with marginally higher supply rails.
How does the MAX6029EUK33+T perform in terms of output voltage temperature coefficient?
The MAX6029EUK33+T has a maximum temperature coefficient of 30ppm/°C over –40°C to +85°C. This translates to a worst-case output drift of ±1.26mV across its full operating range, supporting 12-bit accuracy without calibration. The coefficient is characterized using the box method and guaranteed by design-not production tested-but validated across process corners and temperature extremes.
Is the MAX6029EUK33+T RoHS-compliant and lead-free?
Yes, the MAX6029EUK33+T is RoHS-compliant and lead-free, indicated by the "+T" suffix in its orderable part number. It meets JEDEC J-STD-020 moisture sensitivity level 1 (MSL-1) and is qualified for reflow soldering per industry standards. The SOT23-5 package uses BiCMOS process technology and carries the "+" RoHS indicator per Maxim's package coding convention.
MAX6029EUK33+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):
- 3.3V
- Voltage - Output (Max):
- -
- Current - Output:
- 4 mA
- Tolerance:
- ±0.15%
- Temperature Coefficient:
- 30ppm/°C
- Noise - 0.1Hz to 10Hz:
- 56µVp-p
- Noise - 10Hz to 10kHz:
- 174µVrms
- Voltage - Input:
- 3.5V ~ 12.6V
- Current - Supply:
- 7.25µA
- Current - Cathode:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
MAX6029EUK33+T FAQ
1.How can I place an order for MAX6029EUK33+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6029EUK33+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 MAX6029EUK33+T reliable?
The price and inventory of MAX6029EUK33+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6029EUK33+T is usually 5 days.
3.What payment methods are accepted for MAX6029EUK33+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6029EUK33+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6029EUK33+T?
MAX6029EUK33+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6029EUK33+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 MAX6029EUK33+T?
For technical support, including MAX6029EUK33+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6029EUK33+T requirements.
6.How does Aetrix verify that MAX6029EUK33+T is sourced from the original manufacturer or authorized distributors?
All MAX6029EUK33+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 MAX6029EUK33+T meets industry standards.
7.What is the process for return or replacement of MAX6029EUK33+T?
All MAX6029EUK33+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6029EUK33+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 MAX6029EUK33+T part is unused and in its original packaging.
Return procedure for MAX6029EUK33+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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