Analog Devices Inc./Maxim Integrated MAX6195BESA

Overview

MAX6195BESA from Maxim Integrated is a precision, micropower, low-dropout series-mode bandgap voltage reference delivering 5.000V output with ±2mV initial accuracy, 5ppm/°C max temperature coefficient, and 35µA max quiescent supply current - ideal for high-accuracy ADC/DAC biasing in battery-powered handheld instruments.

For engineers reviewing the MAX6195BESA datasheet, MAX6195BESA pinout, MAX6195BESA application, or MAX6195BESA equivalent, this page delivers verified specifications, SO-8 package details, load-regulation behavior at 500µA, dropout performance (100mV @ 500µA), and real-world design implications for precision analog systems.

Technical Context

The MAX6195BESA uses a proprietary curvature-correction circuit and laser-trimmed thin-film resistors to achieve <5ppm/°C temperature coefficient and ±2mV initial accuracy over –40°C to +85°C. It operates as a series-mode reference, sourcing/sinking up to ±500µA while maintaining stability with capacitive loads up to 2.2nF.

Its supply current remains virtually invariant across input voltage (27–35µA, ΔI_IN/ΔV_IN = 0.8–2µA/V), and it achieves fast turn-on settling (220µs to 0.1%) without external compensation - enabled by internal frequency compensation and low-output-impedance architecture.

Key Specifications

Pinout & Package

MAX6195BESA is housed in an 8-pin SO (Small Outline) package with exposed pad (RoHS-compliant, lead-free). Pin 1 is OUT, Pin 2 is IN, Pin 4 is GND; Pins 1,3,5,7,8 are No Connect (N.C.). The package is optimized for thermal stability and board-level EMI immunity in compact layouts.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADR3450BRMZ and REF5050AIDR, MAX6195BESA uniquely balances micropower operation (≤35µA), capacitor-free stability (0–2.2nF), and industrial-grade accuracy (±2mV/5ppm/°C) - making it optimal for space- and energy-constrained portable instrumentation where layout simplicity and thermal stability are non-negotiable.

Availability

MAX6195BESA 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 RoHS-compliant packaging.

Supply support for MAX6195BESA 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) is a semiconductor company specializing in high-performance analog, mixed-signal, and power-management ICs for industrial, medical, and communications applications.

The MAX6190–MAX6195/MAX6198 family was designed specifically for micropower, high-accuracy voltage referencing in portable and battery-operated precision analog systems - emphasizing low drift, minimal supply current, and ease of integration.

FAQ

What is the maximum load current supported by MAX6195BESA?

MAX6195BESA can source and sink up to ±500µA while maintaining specified accuracy and dropout voltage. At 500µA sourcing, dropout is guaranteed ≤100mV. Load regulation is characterized at 0.17µV/µA, meaning output shifts ≤85µV across the full 500µA range. This makes MAX6195BESA suitable for driving ADC reference inputs, op-amp bias networks, and low-current DACs without external buffering.

Does MAX6195BESA require an output capacitor for stability?

No, MAX6195BESA is internally compensated and stable with capacitive loads from 0 to 2.2nF - including no external capacitor. This eliminates BOM cost and board area in space-constrained designs. An optional 2.2nF ceramic capacitor may be added to improve transient response during large load steps, but it is not required for stability per the datasheet.

What is the supply voltage range for MAX6195BESA?

MAX6195BESA operates with a supply voltage range of (V_OUT + 0.2V) to 12.6V - i.e., 5.2V to 12.6V for the 5.000V output version. Below 5.2V, dropout increases and regulation degrades. The device draws up to 200µA during turn-on when VIN is below minimum, so the supply must support this brief surge.

How does MAX6195BESA perform over temperature?

MAX6195BESA guarantees ≤5ppm/°C temperature coefficient and ±2mV initial accuracy over –40°C to +85°C. Its curvature-corrected bandgap design minimizes parabolic drift, and thermal hysteresis is limited to 75ppm. Long-term stability is 50ppm/1000 hours, ensuring consistent performance in field-deployed instrumentation without recalibration.

Is MAX6195BESA pin-compatible with other devices in the MAX619x family?

Yes, all MAX6190–MAX6195/MAX6198 variants share identical 8-pin SO package pinout (IN, GND, OUT, N.C.), enabling drop-in replacement across output voltages (1.25V to 5.0V) and accuracy grades (A/B/C). This simplifies design reuse and inventory consolidation - for example, MAX6195BESA can replace MAX6194BESA or MAX6193BESA on the same footprint with only minor schematic updates.