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Analog Devices Inc./Maxim Integrated MAX6065AEUR+T
- Part No.:
- MAX6065AEUR+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
MAX6065AEUR+T.pdf
- Description:
- IC VREF SERIES 5V SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:2,250
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Product details
Overview
MAX6065AEUR+T from Maxim Integrated is a precision 5.0V, low-dropout, micropower series voltage reference in SOT23-3 package. It delivers ±0.2% initial accuracy, 20ppm/°C max temperature coefficient, and supports 5mA source / 2mA sink load current. Designed for high-accuracy ADC biasing and battery-powered instrumentation requiring stable 5V reference under varying input and temperature.
For engineers reviewing the MAX6065AEUR+T datasheet, MAX6065AEUR+T pinout, MAX6065AEUR+T application, or MAX6065AEUR+T equivalent, key selection criteria include dropout voltage (≤200mV at 1mA), supply-current independence from VIN (90µA typ, 8µA/V variation), absence of required output capacitor, and guaranteed performance across –40°C to +85°C.
Technical Context
The MAX6065AEUR+T is a three-terminal, series-mode voltage reference using proprietary curvature-correction circuitry and laser-trimmed thin-film resistors. Its BiCMOS process enables ultra-low quiescent current while maintaining tight initial tolerance and low thermal drift.
It operates with input voltage as low as (VOUT + 200mV) = 5.2V up to 12.6V, requires no external compensation capacitor, and remains stable with capacitive loads - eliminating board-area overhead common in shunt references. Output hysteresis is limited to 130ppm after thermal cycling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.000V ±0.2% (±10mV) at +25°C - ensures direct compatibility with 5V ADC full-scale ranges without calibration. |
| Temp. Coefficient | 20ppm/°C max - contributes ≤±1.5mV error over –40°C to +85°C ambient, critical for portable metrology. |
| Dropout Voltage | 200mV max at 1mA load - enables operation from 5.2V supply, supporting single-cell Li-ion or regulated 5.5V rails. |
| Quiescent Current | 90µA typical, ≤125µA max - draws <100µA regardless of input voltage (8µA/V variation), maximizing battery life. |
| Load Drive | Sources 5mA / sinks 2mA - directly drives SAR ADC reference inputs and small analog front-ends without buffering. |
| Noise (0.1–10Hz) | 60µVP-P - low enough for 16-bit+ precision data acquisition without additional filtering. |
| PSRR | 65dB at 120Hz - suppresses ripple from switching regulators feeding the reference input. |
Pinout & Package
MAX6065AEUR+T is housed in a 3-pin SOT23-3 package (JEDEC MO-178AA), footprint-compatible with industry-standard SOT-23 layouts and reflow-process ready.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN) | Input Supply Terminal | Accepts 5.2V to 12.6V; internal regulation rejects line variations - no external resistor needed unlike shunt references. |
| 2 (OUT) | Precision Reference Output | Delivers stable 5.0V; electrically isolated from IN/GND by internal series pass element; stable with 0–1µF capacitive loads. |
| 3 (GND) | Analog Ground Reference | Return path for load current and internal bias; must be connected to clean system AGND to maintain accuracy and noise performance. |
Key Features
| Feature | Design Value |
|---|---|
| No output capacitor required | Eliminates 0.1–1µF ceramic capacitor and associated PCB area - essential for ultra-compact wearables and sensor nodes. |
| Supply-current independence | 90µA quiescent current varies only ±8µA per volt of VIN change - avoids wasted current at higher supply voltages. |
| Low dropout (200mV) | Enables use with low-headroom supplies (e.g., 5.5V buck converter output), reducing power loss and thermal stress. |
| Stable with capacitive loads | Operates reliably with 0–1µF output capacitance - simplifies layout and supports decoupling for downstream analog circuits. |
| Extended temp range | Specified from –40°C to +85°C - validated for industrial and automotive cabin applications without derating. |
Applications
| Portable DMM Front-End | Industrial 16-Bit Data Logger |
|---|---|
Use Scenario: Handheld digital multimeter measuring DC voltage with 0.1% accuracy requirement across battery discharge cycle. IC Role / Device Role / Timing Role: Primary 5V reference for 16-bit sigma-delta ADC and analog multiplexer biasing. Use Value: 20ppm/°C drift and ±0.2% initial error ensure measurement repeatability without auto-zero; 90µA current extends alkaline battery life beyond 200 hours. |
Use Scenario: Ruggedized environmental sensor node logging temperature/pressure with 16-bit resolution in factory settings. IC Role / Device Role / Timing Role: Stable 5V reference for precision RTD-to-digital signal chain including PGA and ADC. Use Value: Dropout of 200mV allows direct connection to 5.2V industrial SMPS rail; –40°C to +85°C spec guarantees field reliability without recalibration. |
| Notebook System Power Monitor | Battery Fuel Gauge Reference |
Use Scenario: Real-time monitoring of CPU core voltage and system rail health in ultrabook platforms. IC Role / Device Role / Timing Role: High-PSRR 5V reference for ADC measuring 0.5–1.5V CPU VDD via precision resistor divider. Use Value: 65dB PSRR at 120Hz suppresses switching noise from nearby buck converters; no output cap saves space in dense motherboard layout. |
Use Scenario: Accurate state-of-charge estimation in smart battery packs using coulomb counting and cell voltage sampling. IC Role / Device Role / Timing Role: Low-drift 5V reference for fuel gauge IC's internal ADC and reference buffer. Use Value: 130ppm hysteresis and 62ppm/1000hr long-term stability prevent drift-induced SoC errors over multi-year 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 |
|---|---|---|---|
| ADR3450ARJZ-R7 | 5.0V output, ±0.1% initial accuracy, 10ppm/°C TC, but 180µA quiescent current and requires 1µF output capacitor. | Better accuracy and TC, but higher supply current and mandatory capacitor reduce suitability for space-constrained, ultra-low-power designs. | Select when ultimate TC performance outweighs board area and current budget constraints. |
| REF5050AIDR | 5.0V output, ±0.05% initial accuracy, 3ppm/°C TC, SO-8 package, 950µA quiescent current, requires 1µF output capacitor. | Higher precision and lower TC, but 10× higher supply current and larger SO-8 footprint limit use in portable or battery-critical systems. | Select for lab-grade instrumentation where accuracy dominates size/power trade-offs. |
Compared with ADR3450ARJZ-R7 and REF5050AIDR, the MAX6065AEUR+T offers the optimal balance of 5V reference stability, ultra-low 90µA operating current, SOT23-3 compactness, and capacitor-free operation - making it uniquely suited for space- and energy-constrained embedded systems.
Availability
MAX6065AEUR+T is available at Aetrix Electronics and suitable for portable DMMs, industrial data loggers, notebook power monitors, and battery fuel gauges requiring stable component supply with consistent parametric performance across production lots.
Supply support for MAX6065AEUR+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, mixed-signal, and power-management ICs for industrial, communications, and consumer applications.
The MAX6061–MAX6068 family was designed specifically to replace inefficient shunt references in battery-powered and space-constrained systems - delivering precision voltage references with micropower consumption and zero external components.
FAQ
What is the minimum input voltage required for MAX6065AEUR+T to regulate at 5.0V?
The MAX6065AEUR+T requires a minimum input voltage of (VOUT + 200mV) = 5.2V to maintain regulation within specification. This low dropout enables operation from marginally regulated 5.5V supplies or single-cell Li-ion batteries with integrated LDOs. Below 5.2V, output voltage drops linearly with input, and accuracy is not guaranteed.
Does MAX6065AEUR+T require an output capacitor for stability?
No, the MAX6065AEUR+T is internally compensated and does not require an external output capacitor for stability - a key differentiator from most competing references. An optional 0.1µF–1µF ceramic capacitor may be added to improve transient response under step-load conditions, but it is never mandatory.
What is the guaranteed temperature coefficient for MAX6065AEUR+T over –40°C to +85°C?
The MAX6065AEUR+T has a guaranteed maximum temperature coefficient of 20ppm/°C across the full –40°C to +85°C operating range, measured using the "box method." This translates to a worst-case output variation of ±1.5mV over the entire temperature span, ensuring predictable performance in uncontrolled environments.
Can MAX6065AEUR+T sink current, and how much?
Yes, the MAX6065AEUR+T can actively sink up to 2mA of load current into its OUT pin, enabling bidirectional reference usage - for example, driving the reference input of dual-supply op-amps or compensating for leakage in high-impedance sensor interfaces. This capability eliminates need for external sinking circuitry.
How does the supply current of MAX6065AEUR+T vary with input voltage?
The MAX6065AEUR+T exhibits exceptional supply-current stability: typical quiescent current is 90µA with only ±8µA/V variation across its 5.2V to 12.6V input range. This near-constant draw - unlike shunt references whose current scales with VIN - maximizes efficiency and simplifies power budgeting in wide-input-voltage systems.
MAX6065AEUR+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):
- 5V
- Voltage - Output (Max):
- -
- Current - Output:
- 5 mA
- Tolerance:
- ±0.2%
- Temperature Coefficient:
- 20ppm/°C
- Noise - 0.1Hz to 10Hz:
- 60µVp-p
- Noise - 10Hz to 10kHz:
- 60µVrms
- Voltage - Input:
- 5.2V ~ 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
MAX6065AEUR+T FAQ
1.How can I place an order for MAX6065AEUR+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6065AEUR+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 MAX6065AEUR+T reliable?
The price and inventory of MAX6065AEUR+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6065AEUR+T is usually 5 days.
3.What payment methods are accepted for MAX6065AEUR+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6065AEUR+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6065AEUR+T?
MAX6065AEUR+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6065AEUR+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 MAX6065AEUR+T?
For technical support, including MAX6065AEUR+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6065AEUR+T requirements.
6.How does Aetrix verify that MAX6065AEUR+T is sourced from the original manufacturer or authorized distributors?
All MAX6065AEUR+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 MAX6065AEUR+T meets industry standards.
7.What is the process for return or replacement of MAX6065AEUR+T?
All MAX6065AEUR+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6065AEUR+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 MAX6065AEUR+T part is unused and in its original packaging.
Return procedure for MAX6065AEUR+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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