Analog Devices Inc./Maxim Integrated MAX6192AESA+

Overview

MAX6192AESA+ from Maxim Integrated is a precision, micropower, low-dropout series-mode bandgap voltage reference delivering 2.500V ±2mV initial accuracy, 4ppm/°C max temperature coefficient, and 35µA max quiescent supply current. It operates from (VOUT + 0.2V) to 12.6V input, sustains ±500µA load current with 100mV dropout at 500µA, and is stable with capacitive loads up to 2.2nF - ideal for high-accuracy ADC/DAC biasing in portable instrumentation.

For engineers reviewing the MAX6192AESA+ datasheet, MAX6192AESA+ pinout, MAX6192AESA+ application, or MAX6192AESA+ equivalent, key selection criteria include initial voltage tolerance, long-term stability (50ppm/1000hrs), load regulation (0.14µV/µA), line regulation (15µV/V), and SO-8 package compatibility with space-constrained PCB layouts.

Technical Context

The MAX6192AESA+ uses a proprietary curvature-correction circuit and laser-trimmed thin-film resistors to achieve <5ppm/°C temperature coefficient and ±2mV initial accuracy across –40°C to +85°C. Its series-mode architecture enables bidirectional output current (±500µA) without external components while maintaining immunity to input voltage variation (0.8µA/V supply current drift).

Internally compensated for fast settling (85µs to 0.1%), it guarantees stability with 0–2.2nF capacitive loads and exhibits low noise (125µVRMS, 0.1Hz–10Hz) and high PSRR (82dB at 120Hz). Dropout voltage remains ≤100mV at 500µA sink/source, supporting operation near battery end-of-life in 3V systems.

Key Specifications

Pinout & Package

MAX6192AESA+ is housed in an 8-pin SO (Small Outline) package, RoHS-compliant and lead(Pb)-free, with exposed pad not internally connected. Pin 1 is OUT, Pin 2 is IN, Pin 4 is GND; Pins 1,3,5,7,8 are No Connection (N.C.).

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADR3425ARJZ-R7 and REF3025AIDBZR, MAX6192AESA+ offers superior TC (4ppm/°C vs 3ppm/°C and 50ppm/°C), lower supply current than REF3025AIDBZR, and robust ±500µA load drive - making it optimal for portable, battery-critical, high-accuracy measurement systems requiring SO-8 layout compatibility.

Availability

MAX6192AESA+ is available at Aetrix Electronics and suitable for hand-held instruments, analog-to-digital converters, and industrial process control systems requiring stable component supply with guaranteed long-term availability and traceable sourcing.

Supply support for MAX6192AESA+ 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 demanding industrial, medical, and communications applications, emphasizing low power, high accuracy, and reliability.

The MAX6190–MAX6195/MAX6198 family was engineered specifically for micropower, high-stability voltage referencing in portable and battery-operated systems where initial accuracy, temperature drift, and quiescent current are critical.

FAQ

What is the maximum load current the MAX6192AESA+ can source or sink?

The MAX6192AESA+ is specified to source and sink up to ±500µA while maintaining output voltage regulation within datasheet limits. At 500µA load, dropout voltage remains ≤100mV, and load regulation is characterized at 0.14µV/µA - ensuring <70µV total shift across the full bidirectional range. This capability enables direct driving of ADC reference inputs and op-amp bias networks without external buffers.

Does the MAX6192AESA+ require an output capacitor for stability?

No, the MAX6192AESA+ is internally compensated and stable with capacitive loads from 0 to 2.2nF. An output capacitor is optional and recommended only in applications subject to rapid load or supply transients - such as multiplexed sensor arrays - where it reduces overshoot/undershoot and improves transient response. For static reference applications, omitting the capacitor saves board space and cost.

What is the minimum input voltage required for the MAX6192AESA+ to regulate at 2.500V?

The minimum input voltage for regulation is VOUT + 0.2V = 2.7V, as specified in the Electrical Characteristics table. Below this, dropout behavior occurs: output voltage drops linearly with input. At 500µA load, the device maintains ≤0.2% deviation from nominal 2.500V down to 2.7V input; operation below 2.7V is possible but unregulated and not guaranteed.

How does the MAX6192AESA+ compare to shunt references in terms of supply efficiency?

Unlike shunt references that draw constant current through a series resistor, the MAX6192AESA+ draws only 35µA quiescent current plus load current - meaning it consumes zero extra current when the load is idle. This series-mode architecture eliminates wasted bias current, extends battery life in intermittent-use devices, and avoids input-voltage-dependent current draw (only 0.8µA/V variation), making it significantly more efficient than shunt alternatives in variable-load systems.

Is the MAX6192AESA+ compatible with standard SO-8 footprints and reflow profiles?

Yes, MAX6192AESA+ uses a standard 8-pin SO (Small Outline) package per outline 21-0041, with RoHS-compliant lead(Pb)-free finish. It is qualified for standard SnPb and lead-free reflow profiles, including peak temperatures up to +260°C (per JEDEC J-STD-020). The exposed pad is not electrically connected, so thermal pad grounding is optional and does not affect electrical performance.