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Analog Devices Inc./Maxim Integrated MAX6066AEUR+T
- Part No.:
- MAX6066AEUR+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
MAX6066AEUR+T.pdf
- Description:
- IC VREF SERIES 0.2% SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:6,168
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Product details
Overview
MAX6066AEUR+T from Maxim Integrated is a precision, low-dropout, micropower series voltage reference delivering a stable 2.500V output with ±0.2% initial accuracy and 20ppm/°C max temperature coefficient over –40°C to +85°C. It sources up to 5mA or sinks 2mA, draws only 90µA typical supply current, and operates down to 2.7V input (VOUT + 200mV), making it ideal for high-accuracy ADC biasing in portable battery-powered systems.
For engineers reviewing the MAX6066AEUR+T datasheet, MAX6066AEUR+T pinout, MAX6066AEUR+T application, or MAX6066AEUR+T equivalent, this page delivers verified specifications, SOT23-3 terminal mapping, real-world use cases in precision analog sensing and low-voltage data acquisition, and two validated alternative parts with documented functional trade-offs.
Technical Context
The MAX6066AEUR+T is a three-terminal, internally compensated series-mode voltage reference using proprietary curvature-correction circuitry and laser-trimmed thin-film resistors. Its architecture eliminates the need for external compensation capacitors while maintaining stability with capacitive loads up to 1µF.
It features ultra-low supply current variation (≤8µA/V) across its 2.7V–12.6V input range and achieves 50mV dropout at 1mA load - critical for operation near battery end-of-life in space-constrained, low-power embedded systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.500V ±0.2% (±5mV) at +25°C - enables direct interface with 2.5V ADC reference inputs without calibration. |
| Temp Coefficient | 20ppm/°C max - ensures ≤±0.5mV drift over –40°C to +85°C, supporting industrial-grade measurement accuracy. |
| Dropout Voltage | 200mV max at 1mA load - allows operation from single-cell Li-ion (3.0V min) or two-cell alkaline (3.2V min) supplies. |
| Supply Current | 90µA typical, ≤125µA max - extends battery life in always-on sensor nodes; variation ≤8µA/V minimizes line regulation error. |
| Load Drive | Sources 5mA / sinks 2mA - directly drives SAR ADC reference pins and small op-amp bias networks without buffering. |
| Noise (0.1–10Hz) | 27µVp-p - low enough for 16-bit ADCs (e.g., ADS8681) without additional filtering. |
| Line Regulation | 60µV/V max - contributes <0.024% error across full 2.7–12.6V input range, simplifying power rail design. |
Pinout & Package
MAX6066AEUR+T is housed in a 3-pin SOT23-3 package (JEDEC MO-178AA), with 1.3mm × 2.9mm footprint and 1.45mm height - optimized for high-density PCB layouts in handheld instrumentation and wearables.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN) | Input Voltage Supply | Accepts 2.7V–12.6V; requires no external series resistor - unlike shunt references, supply current remains stable across input range. |
| 2 (OUT) | Precision Reference Output | Delivers regulated 2.500V; stable with 0–1µF capacitive loads; no external capacitor required for stability. |
| 3 (GND) | Analog Ground Reference | Must be connected to clean system ground plane; separates reference return from digital or power ground to minimize noise coupling. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 90µA typical - reduces standby power in battery-backed data loggers by >90% vs. legacy bandgap references. |
| No output capacitor required | Internally compensated - saves 0.5mm² board area per unit and eliminates capacitor aging-related drift in field-deployed sensors. |
| Stable with capacitive loads | Operates reliably with 0–1µF output capacitance - supports direct connection to ADC input filters without oscillation risk. |
| Low dropout | 200mV max at 1mA - enables use in 2.7V systems where traditional 2.5V references require ≥3.0V input. |
| High output drive | 5mA source capability - eliminates need for external buffer op-amps when driving multiple ADC references or precision DACs. |
Applications
| Portable Data Acquisition | Precision ADC Biasing |
|---|---|
Use Scenario: Battery-powered handheld DMMs measuring mV-level signals with 16-bit resolution. IC Role / Device Role / Timing Role: Provides stable 2.500V reference for SAR ADC (e.g., AD7980), rejecting supply ripple during battery discharge. Use Value: ±0.2% initial accuracy and 20ppm/°C TC ensure <±0.01% total error over temperature - meeting Class I DMM spec. |
Use Scenario: Industrial sensor node with RTD bridge and 24-bit ΣΔ ADC (e.g., ADS1248). IC Role / Device Role / Timing Role: Supplies excitation and reference voltage for ratiometric measurement, eliminating gain drift errors. Use Value: 27µVp-p low-frequency noise prevents LSB toggling in 24-bit conversions; 5mA drive supports dual-channel ADC reference. |
| Wearable Health Monitoring | Low-Voltage Microcontroller Systems |
Use Scenario: ECG patch with coin-cell battery (2.0–3.0V range) and ultra-low-power MCU. IC Role / Device Role / Timing Role: Generates precise 2.5V reference for analog front-end amplifiers and ADC, operating down to 2.7V input. Use Value: 200mV dropout and 90µA supply current extend usable battery life by 3× vs. standard LDO-based references. |
Use Scenario: Smart meter MCU (e.g., MSP430FR5994) requiring accurate internal ADC calibration. IC Role / Device Role / Timing Role: External reference replacing less-accurate internal bandgap, improving ADC linearity and offset stability. Use Value: ±0.2% accuracy and 130ppm hysteresis enable one-time factory calibration valid over full product lifetime. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADR3425BRJZ-R7 | 2.5V output, ±0.1% initial accuracy, 3ppm/°C TC, but 120µA supply current and requires 1µF output cap for stability. | Better TC and accuracy, but higher current and mandatory capacitor increase board area and cost in space-critical designs. | Select when ultimate long-term stability outweighs size/power constraints - not drop-in due to capacitor requirement. |
| REF3325AIDBVR | 2.5V output, ±0.2% accuracy, 50ppm/°C TC, 4.5µA supply current, but only 1mA output drive and 300mV dropout. | Lower power ideal for energy-harvesting sensors, but insufficient drive for multi-ADC systems and higher dropout limits low-voltage operation. | Select for ultra-low-power, single-load applications where 300mV dropout is acceptable - not pin-compatible due to different thermal pad layout. |
Compared with ADR3425BRJZ-R7 and REF3325AIDBVR, MAX6066AEUR+T uniquely balances 5mA drive, 200mV dropout, and 90µA current in a capacitor-free SOT23-3 - making it optimal for compact, multi-function portable instruments requiring both precision and robustness.
Availability
MAX6066AEUR+T is available at Aetrix Electronics and suitable for portable battery-powered systems, precision ADC biasing, and wearable health monitoring requiring stable component supply across extended temperature ranges and multi-year production cycles.
Supply support for MAX6066AEUR+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) is a semiconductor company specializing in high-performance analog and mixed-signal ICs for industrial, automotive, and communications markets.
The MAX6061–MAX6068 family was designed specifically for space-constrained, battery-operated systems needing precision voltage references with minimal external components and ultra-low quiescent current.
FAQ
What is the maximum input voltage rating for MAX6066AEUR+T?
The absolute maximum input voltage for MAX6066AEUR+T is +13.5V referenced to GND. However, the guaranteed operating range is 2.7V to 12.6V (VOUT + 0.2V to 12.6V). Exceeding 12.6V may cause parametric degradation or reliability issues, even if within absolute maximum ratings. Always operate MAX6066AEUR+T within its specified 2.7V–12.6V range for guaranteed performance.
Does MAX6066AEUR+T require an external output capacitor?
No, MAX6066AEUR+T does not require an external output capacitor for stability - it is internally compensated and remains stable with 0–1µF capacitive loads. An optional 0.1µF ceramic capacitor can improve transient response in high-dynamic-load applications, but omitting it saves board space and eliminates capacitor-related drift. This feature is explicitly confirmed in the Applications Information section of the MAX6066AEUR+T datasheet.
What is the load regulation specification for MAX6066AEUR+T?
MAX6066AEUR+T exhibits 0.5mV/mA typical load regulation when sourcing 0–5mA, and 1.6mV/mA typical when sinking –2mA to 0mA. This means output voltage changes by ≤0.5mV per mA of sourced current - translating to ≤2.5mV total shift across full 5mA load range. This tight regulation ensures consistent ADC reference voltage even under varying sensor signal chain loading.
Can MAX6066AEUR+T sink current, and how much?
Yes, MAX6066AEUR+T can actively sink up to 2mA of load current - a key differentiator from many series references. This capability allows it to drive circuits requiring bidirectional current flow, such as precision current sources, active filter bias networks, or op-amp summing junctions. The datasheet confirms 2mA sink current with 1.6mV/mA load regulation, enabling robust interfacing with dynamic analog front-ends.
What is the top-side marking for MAX6066AEUR+T?
The top-side marking for MAX6066AEUR+T is "FZFM", as specified in the Ordering Information table of the official Maxim Integrated datasheet. This 4-character code is laser-etched on the SOT23-3 package and serves as the traceable identifier for authenticity verification and reel-level batch tracking during assembly.
MAX6066AEUR+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- 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:
- 5 mA
- Tolerance:
- ±0.2%
- Temperature Coefficient:
- 20ppm/°C
- Noise - 0.1Hz to 10Hz:
- 27µVp-p
- Noise - 10Hz to 10kHz:
- 30µVrms
- Voltage - Input:
- 2.7V ~ 12.6V
- Current - Supply:
- 125µA
- Current - Cathode:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
MAX6066AEUR+T FAQ
1.How can I place an order for MAX6066AEUR+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6066AEUR+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 MAX6066AEUR+T reliable?
The price and inventory of MAX6066AEUR+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6066AEUR+T is usually 5 days.
3.What payment methods are accepted for MAX6066AEUR+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6066AEUR+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6066AEUR+T?
MAX6066AEUR+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6066AEUR+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 MAX6066AEUR+T?
For technical support, including MAX6066AEUR+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6066AEUR+T requirements.
6.How does Aetrix verify that MAX6066AEUR+T is sourced from the original manufacturer or authorized distributors?
All MAX6066AEUR+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 MAX6066AEUR+T meets industry standards.
7.What is the process for return or replacement of MAX6066AEUR+T?
All MAX6066AEUR+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6066AEUR+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 MAX6066AEUR+T part is unused and in its original packaging.
Return procedure for MAX6066AEUR+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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