Analog Devices Inc./Maxim Integrated MAX6100EUR

Overview

The MAX6100EUR from Maxim Integrated is a low-cost, micropower, low-dropout series-mode voltage reference delivering a precise 1.8V output with ±0.4% initial accuracy and 75ppm/°C max temperature coefficient over –40°C to +85°C. It draws only 90µA quiescent supply current, supports 5mA source / 2mA sink load capability, and operates from 2.5V to 12.6V input - enabling use in space-constrained, battery-powered precision analog systems such as portable DMMs and GPS receivers.

For engineers reviewing the MAX6100EUR datasheet, MAX6100EUR pinout, MAX6100EUR application, or MAX6100EUR equivalent, key selection considerations include its SOT23-3 package, no-output-capacitor-required stability, 50mV dropout at 1mA, and supply-current independence from VIN - critical for ultra-low-power sensor front-ends and ADC reference design.

Technical Context

The MAX6100EUR employs a proprietary curvature-correction circuit and laser-trimmed thin-film resistors to achieve high initial accuracy and low thermal drift. Its series-mode architecture eliminates the need for external biasing resistors and delivers supply current virtually independent of input voltage (4–8µA/V variation).

Internally compensated for capacitive loads up to 1µF, it achieves stable operation without an external output capacitor - reducing BOM count and PCB area. The device features 86dB ripple rejection at 120Hz and 0.9mV/mA load regulation when sourcing, making it suitable for high-resolution data acquisition where reference noise and line/load sensitivity must be minimized.

Key Specifications

Pinout & Package

MAX6100EUR is housed in a 3-pin SOT23-3 package (JEDEC MO-178AA), with 1.3mm × 0.8mm footprint and 0.95mm height - optimized for high-density portable PCB layouts.

Key Features

Applications

Equivalent & Alternatives

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

Compared with REF3018AIDBVR and ADR3418ARJZ-R7, the MAX6100EUR offers unique 2mA sink capability, no-output-capacitor operation, and optimal trade-off between cost, accuracy, and load flexibility - making it preferred for cost-sensitive, space-constrained, dual-direction load applications.

Availability

MAX6100EUR is available at Aetrix Electronics and suitable for portable DMMs, GPS receivers, notebook system monitoring, and industrial sensor transmitters requiring stable component supply with guaranteed long-term continuity.

Supply support for MAX6100EUR 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, mixed-signal, and power-management ICs for industrial, communications, and consumer applications.

The MAX6100–MAX6107 family was engineered specifically for ultra-low-power, space-constrained voltage reference needs in portable instrumentation and battery-operated systems - emphasizing micropower operation, SOT23 integration, and elimination of external components.

FAQ

What is the maximum load current the MAX6100EUR can source and sink?

The MAX6100EUR can source up to 5mA and sink up to 2mA while maintaining specified output voltage accuracy and regulation. This dual-direction capability enables direct driving of ADC reference inputs, op-amp bias networks, and current-sinking sensor interfaces - eliminating the need for external buffer stages in many designs. The MAX6100EUR's 0.9mV/mA source load regulation ensures minimal voltage shift even under full 5mA load.

Does the MAX6100EUR require an external output capacitor for stability?

No, the MAX6100EUR does not require an external output capacitor for stability. It is internally compensated and remains stable with any capacitive load from 0 to 1µF. This feature saves PCB area and BOM cost in space-critical applications like portable DMMs and GPS modules. External capacitors may still be added to improve transient response in high-dynamic-load scenarios, but they are optional - unlike most competing references that mandate minimum output capacitance.

What is the dropout voltage specification for the MAX6100EUR?

The MAX6100EUR has a dropout voltage of 50mV at 1mA load current, defined as the minimum input-to-output differential required to maintain output regulation within 0.2% of nominal. At higher loads (e.g., 5mA), dropout increases to ≤200mV. This low dropout enables operation from supplies as low as 1.85V - critical for single-cell Li-ion or coin-cell powered systems where every millivolt of headroom matters.

How does the MAX6100EUR's supply current vary with input voltage?

The MAX6100EUR exhibits near-constant quiescent supply current: 90µA typical, 125µA maximum, with only 4–8µA/V variation across its 2.5V–12.6V input range. This supply-current independence contrasts sharply with shunt-mode references whose current scales linearly with VIN. As a result, the MAX6100EUR maximizes battery efficiency across wide input ranges - especially valuable in systems with variable battery voltage or unregulated input rails.

What is the temperature coefficient and operating temperature range of the MAX6100EUR?

The MAX6100EUR has a maximum temperature coefficient of 75ppm/°C over the extended industrial temperature range of –40°C to +85°C. This means its 1.8V output drifts no more than ±0.126% across the full range - sufficient for Class II portable instrumentation and automotive cabin applications. The specification is verified using the "box method" per JEDEC standards, ensuring real-world thermal performance consistency.