Analog Devices Inc./Maxim Integrated MAX6162AESA

Overview

MAX6162AESA from Maxim Integrated is a precision, low-dropout, micropower series voltage reference delivering a stable 2.048V output with ±2mV initial accuracy and 5ppm/°C max temperature coefficient over -40°C to +85°C. It sources up to 5mA, sinks 2mA, operates from (VOUT + 200mV) to 12.6V, and requires no external compensation capacitor-ideal for high-accuracy ADC biasing in portable instrumentation.

For engineers reviewing the MAX6162AESA datasheet, MAX6162AESA pinout, MAX6162AESA application, or MAX6162AESA equivalent, key selection criteria include its 2.048V output matched to 12-bit DAC/ADC full-scale ranges, ultra-low 100μA typical supply current, 200mV max dropout at 1mA, stability with 1μF loads, and SO-8 package compatibility with space-constrained PCB layouts.

Technical Context

The MAX6162AESA employs a proprietary curvature-correction circuit and laser-trimmed thin-film resistors to achieve 5ppm/°C max TCVOUT and ±2mV max initial error. Its internal compensation eliminates need for external capacitors, while BiCMOS process ensures low noise (22µV_P-P, 0.1Hz–10Hz) and high PSRR (78dB at 120Hz).

As a three-terminal series-mode reference, it draws supply current virtually independent of input voltage (ΔI_IN/ΔV_IN ≤ 8μA/V), avoids wasteful shunt-resistor biasing, and supports sourcing/sinking load currents without external components-enabling direct integration into precision analog signal chains.

Key Specifications

Pinout & Package

MAX6162AESA is housed in an 8-pin SO (Small Outline) package with exposed pad option not specified; footprint conforms to outline 21-0041 and land pattern 90-0096 per Maxim's package documentation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with REF5020IDR and ADR3420ARJZ-R7, MAX6162AESA uniquely balances 5ppm/°C tempco, 100μA supply current, 2mA sink capability, and capacitor-free operation-making it optimal for portable, battery-powered systems demanding both precision and efficiency.

Availability

MAX6162AESA is available at Aetrix Electronics and suitable for portable instrumentation, industrial data acquisition, medical sensor nodes, and test & measurement equipment requiring stable component supply with guaranteed long-term availability.

Supply support for MAX6162AESA 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.

The MAX6161–MAX6168 family was engineered to replace discrete shunt references and older series references in battery-powered, high-accuracy systems-delivering micropower operation, low dropout, and uncompromised stability without external components.

FAQ

What is the maximum load current the MAX6162AESA can source and sink?

The MAX6162AESA can source up to 5mA and sink up to 2mA while maintaining output regulation within specifications. This dual-direction capability allows it to drive ADC reference inputs, op-amp bias networks, and active filter stages without external buffers. The 0.9mV/mA sourcing load regulation ensures minimal voltage shift even under full 5mA load, preserving accuracy in high-precision signal chains.

Does the MAX6162AESA require an external output capacitor for stability?

No, the MAX6162AESA does not require an external output capacitor for stability due to internal compensation. It remains stable with capacitive loads from 0 to 1μF, enabling direct connection to ADC sample-and-hold capacitors or op-amp inputs. Adding a 1μF capacitor improves transient response during step-load changes but is optional-reducing BOM cost and PCB area in space-constrained designs.

What is the minimum input voltage required for the MAX6162AESA to regulate at 2.048V?

The MAX6162AESA requires a minimum input voltage of V_OUT + 200mV = 2.248V to maintain regulation at 2.048V output. This low dropout enables operation from single-cell lithium batteries (nominal 3.7V, down to 2.8V) or low-voltage LDOs. At 1mA load, dropout is guaranteed ≤200mV; actual dropout decreases with lower load current, improving efficiency in ultra-low-power modes.

How does the MAX6162AESA compare to shunt voltage references in terms of supply current efficiency?

Unlike shunt references that waste current through a series resistor and draw fixed bias current regardless of load, the MAX6162AESA draws only ~100μA quiescent current independent of input voltage (≤8μA/V variation). It supplies load current on-demand, eliminating wasted bias current-reducing total system power by up to 70% in battery-operated devices and simplifying thermal design in dense PCB layouts.

Is the MAX6162AESA RoHS-compliant and lead-free?

Yes, the MAX6162AESA is RoHS-compliant and lead-free, indicated by the "+" suffix in its ordering code (MAX6162AESA+). It meets EU Directive 2011/65/EU and is manufactured using Maxim's standard lead-free packaging process. The SO-8 package uses matte tin lead finish, compatible with standard SnPb and lead-free solder reflow profiles per J-STD-020.