Analog Devices Inc./Maxim Integrated MAX6192CESA+

Overview

MAX6192CESA+ from Maxim Integrated is a precision, micropower, low-dropout series voltage reference delivering 2.500V output with ±2mV initial accuracy, 5ppm/°C max temperature coefficient, and 35µA max quiescent current. It operates from (VOUT + 0.2V) to 12.6V input, supports ±500µA load current, and is stable with capacitive loads up to 2.2nF - ideal for high-accuracy ADC/DAC biasing in portable instrumentation.

For engineers reviewing the MAX6192CESA+ datasheet, MAX6192CESA+ pinout, MAX6192CESA+ application, or MAX6192CESA+ equivalent, key selection criteria include initial voltage tolerance, thermal drift performance, ultra-low supply current, dropout behavior at full load, and capacitive-load stability without external compensation.

Technical Context

The MAX6192CESA+ is a series-mode bandgap voltage reference using proprietary curvature-correction circuitry and laser-trimmed thin-film resistors to achieve <5ppm/°C temperature coefficient and ±2mV initial accuracy over -40°C to +85°C. It features internal compensation and operates as a two-terminal active device with IN and OUT pins defining the reference path.

It sinks and sources up to ±500µA while maintaining regulation, exhibits 0.14µV/µA load regulation and 15µV/V line regulation, and achieves 85µs turn-on settling time to 0.1% with 50pF output capacitance - enabling fast, stable operation in precision data acquisition systems.

Key Specifications

Pinout & Package

MAX6192CESA+ is housed in an 8-pin SO (Small Outline) package with exposed pad (RoHS-compliant, lead-free). Pins 1, 3, 5, 7, and 8 are No Connect (N.C.); Pin 4 is GND; Pin 6 is OUT (2.500V reference output); Pin 2 is IN (supply input).

Key Features

Applications

Equivalent & Alternatives

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

Compared with REF5025IDR and ADR3425ARJZ-R7, MAX6192CESA+ offers the lowest quiescent current (35µA) and smallest tempco (5ppm/°C) in SO-8, making it optimal for portable, battery-sensitive applications where moderate long-term drift (50ppm/1000hrs) is acceptable.

Availability

MAX6192CESA+ 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 MAX6192CESA+ 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 instrumentation applications.

The MAX6190–MAX6195/MAX6198 family was engineered specifically for micropower, high-accuracy voltage referencing in portable and space-constrained systems - prioritizing ultra-low I_Q, low dropout, and minimal external component count.

FAQ

What is the maximum load current supported by the MAX6192CESA+ while maintaining regulation?

The MAX6192CESA+ is specified to source and sink up to ±500µA while maintaining output regulation within specifications. At 500µA load, dropout voltage remains ≤100mV, and load regulation is characterized at 0.14µV/µA - meaning total output shift is ≤0.7mV across the full ±500µA range. This capability supports direct driving of ADC reference inputs and op-amp bias networks without external buffers.

Does the MAX6192CESA+ require an output capacitor for stability?

No, the MAX6192CESA+ is internally compensated and stable with output capacitance ranging from 0 to 2.2nF. Unlike many references, it does not require a minimum output capacitor for phase margin - eliminating BOM cost and PCB area. An external capacitor may be added to improve transient response in high-dynamic-load applications, but it is optional and not needed for basic stability.

What is the supply voltage range for the MAX6192CESA+?

The MAX6192CESA+ operates with a supply voltage from (V_OUT + 0.2V) = 2.7V minimum to 12.6V maximum. This low dropout headroom enables use in 2.7V–3.6V battery-powered systems. The device draws ≤35µA quiescent current across this entire range, with supply current variation limited to 0.8µA/V - ensuring predictable power budgeting regardless of input voltage.

How does the MAX6192CESA+ achieve its 5ppm/°C temperature coefficient?

The MAX6192CESA+ achieves ≤5ppm/°C temperature coefficient through a combination of proprietary curvature-correction circuitry that compensates second-order thermal effects in the bandgap core, and laser-trimming of precision thin-film resistors during wafer sort. This dual approach corrects both linear and parabolic drift components, resulting in a flatter V_OUT vs. temperature curve than standard bandgap references.

Is the MAX6192CESA+ RoHS-compliant and lead-free?

Yes, the MAX6192CESA+ is RoHS-compliant and lead-free, as indicated by the "+" suffix in the part number. It uses a lead(Pb)-free /RoHS-compliant 8-pin SO package with standard JEDEC land pattern (outline 21-0041, land pattern 90-0096), and meets all applicable environmental compliance requirements for industrial and commercial applications.