Analog Devices Inc./Maxim Integrated MAX6064AEUR

Overview

MAX6064AEUR from Maxim Integrated is a precision, micropower, low-dropout series voltage reference delivering a stable 4.096V 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 quiescent current, and operates with input voltages as low as 4.296V (V_OUT + 200mV), making it ideal for high-resolution ADC biasing in portable instrumentation.

For engineers reviewing the MAX6064AEUR datasheet, MAX6064AEUR pinout, MAX6064AEUR application, or MAX6064AEUR equivalent, key selection criteria include its guaranteed 4.096V output tolerance, ultra-low supply current independence from VIN, absence of required output capacitor, and SOT23-3 footprint compatibility with space-constrained battery-powered systems.

Technical Context

The MAX6064AEUR employs a proprietary curvature-correction circuit and laser-trimmed thin-film resistors to achieve its 20ppm/°C max TCV_OUT and ±0.2% initial accuracy. Its internal compensation eliminates need for external stabilization capacitors, and its series-mode architecture ensures supply current remains stable across 4.296V–12.6V input range.

It delivers 5mA sourcing and 2mA sinking capability while maintaining 50mV–200mV dropout at 1mA load, enabling operation in low-voltage systems where headroom is constrained. Output noise is 50µV_p-p (0.1Hz–10Hz) and ripple rejection reaches 72dB at 120Hz - critical for precision analog signal chains.

Key Specifications

Pinout & Package

MAX6064AEUR is housed in a 3-pin SOT23-3 package (JEDEC MO-178AA), with 1.3mm × 2.9mm footprint and 1.45mm height. Pin 1 is IN, Pin 2 is OUT, Pin 3 is GND - compatible with standard SOT23 pick-and-place tooling and reflow profiles.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar voltage reference applications.

Compared with ADR3440BRJZ-R7 and REF3040AIDBZR, MAX6064AEUR uniquely balances ±0.2% accuracy, 20ppm/°C drift, 90µA I_Q, and 4.296V min input - making it the optimal choice for portable test equipment and industrial DAQ where power, precision, and supply flexibility must coexist.

Availability

MAX6064AEUR is available at Aetrix Electronics and suitable for portable digital multimeters, handheld GPS receivers, industrial data acquisition modules, and medical patient monitoring sensors requiring stable component supply with guaranteed long-term availability.

Supply support for MAX6064AEUR 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 industrial, medical, and communications applications, emphasizing performance-per-watt and integration density.

The MAX6061–MAX6068 family was engineered specifically for battery-powered, high-resolution measurement systems needing micropower operation, low dropout, and uncompromised DC accuracy - with MAX6064AEUR targeting 4.096V-referenced 12-bit ADC architectures.

FAQ

What is the guaranteed initial accuracy of MAX6064AEUR over temperature?

The MAX6064AEUR guarantees ±0.2% initial output voltage accuracy at +25°C, with total error over –40°C to +85°C remaining within ±0.2% plus 20ppm/°C × ΔT - resulting in ≤±0.36% worst-case deviation. This specification is validated per Maxim's production test flow and applies to all units marked 'A' grade, including MAX6064AEUR.

Does MAX6064AEUR require an external output capacitor for stability?

No, MAX6064AEUR does not require an external output capacitor for stability due to its internally compensated design. The device remains stable with capacitive loads up to 1µF, and adding ≥0.1µF improves transient response during load steps - but omission incurs no risk of oscillation, saving board space in size-critical applications like handheld DMMs.

What is the minimum input voltage required for MAX6064AEUR to maintain regulation?

The minimum input voltage for MAX6064AEUR is V_OUT + 200mV = 4.296V, as specified in the Selector Guide and confirmed in Electrical Characteristics tables. Below this, dropout occurs - defined as >0.2% deviation from nominal 4.096V output. Operation at 4.296V is valid at 1mA load; higher loads increase required headroom.

Can MAX6064AEUR sink current, and how much?

Yes, MAX6064AEUR can sink up to 2mA of load current, as verified in Load Regulation specifications and Absolute Maximum Ratings. This capability supports active pull-down configurations, such as biasing current-sinking DACs or interfacing with open-drain comparators - extending utility beyond traditional reference-only use cases.

How does MAX6064AEUR's supply current vary with input voltage?

MAX6064AEUR exhibits supply current variation of ≤8µA/V across its 4.296V–12.6V input range, meaning total change is ≤66µA. At 4.3V input, I_IN ≈ 90µA; at 12.6V, it rises to ≤125µA (max). This near-constant behavior - unlike shunt references - simplifies power modeling and eliminates wasted current at higher VIN.