Analog Devices Inc./Maxim Integrated MAX6195CESA

Overview

MAX6195CESA from Maxim Integrated is a precision, micropower, low-dropout series-mode bandgap voltage reference delivering 5.000V output with ±10mV initial accuracy (±0.2%), 5ppm/°C max temperature coefficient, and 35µA max quiescent supply current. It operates from (VOUT + 0.2V) to 12.6V input, supports ±500µA load current, and is used in high-accuracy ADC/DAC biasing, portable instrumentation, and industrial process control systems requiring stable 5V reference under battery-limited power.

For engineers reviewing the MAX6195CESA datasheet, MAX6195CESA pinout, MAX6195CESA application, or MAX6195CESA equivalent, key selection criteria include guaranteed 100mV dropout at 500µA, 0.17µV/µA load regulation, 25µV/V line regulation, stability with up to 2.2nF capacitive load, and SO-8 package compatibility for space-constrained PCB layouts.

Technical Context

The MAX6195CESA employs a proprietary curvature-correction circuit and laser-trimmed thin-film resistors to achieve <5ppm/°C temperature coefficient and ±10mV initial accuracy over -40°C to +85°C. Its series-mode architecture enables bidirectional load current (±500µA) without external pass components.

Internally compensated design ensures fast settling (220µs to 0.1%) and unconditional stability with capacitive loads from 0 to 2.2nF. Supply current remains virtually invariant across input voltage (0.8µA/V variation), enabling consistent performance in varying battery or LDO-supplied rails.

Key Specifications

Pinout & Package

MAX6195CESA is housed in an 8-pin SO (Small Outline) package with RoHS-compliant lead-free finish. Pins 1, 3, 5, 7, and 8 are No Connect (N.C.) and must remain unconnected. Ground (GND) and supply input (IN) are dedicated terminals; output (OUT) delivers the regulated 5.000V reference.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX6195CESA, REF5050IDR offers better temperature stability but doubles supply current, while ADR4550BRZ delivers lower noise and tighter tempco at the cost of >25× higher quiescent consumption-making MAX6195CESA optimal for micropower, wide-temperature industrial and portable designs where 5ppm/°C and 35µA are sufficient.

Availability

MAX6195CESA 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 MAX6195CESA 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.

The MAX6190–MAX6195/MAX6198 family was engineered specifically for micropower, high-accuracy voltage referencing in battery-operated and thermally variable environments-prioritizing ultra-low quiescent current, low dropout, and exceptional temperature stability.

FAQ

What is the maximum load current supported by the MAX6195CESA?

The MAX6195CESA supports bidirectional load current up to ±500µA while maintaining specified accuracy and dropout voltage. When sourcing 500µA, dropout is guaranteed at 100mV; when sinking 500µA, the device maintains regulation with the same voltage headroom. This capability enables flexible use in both high-side and low-side reference configurations without external buffers.

Does the MAX6195CESA require an output capacitor for stability?

No, the MAX6195CESA is internally compensated and stable with output capacitance ranging from 0 to 2.2nF. An external capacitor is optional and only recommended in applications subject to large load or supply transients-where it improves transient response and reduces overshoot. For space-constrained or ultra-low-power designs, operation without any output capacitor is fully supported and validated.

What is the supply voltage range for the MAX6195CESA?

The MAX6195CESA operates with a supply voltage from (VOUT + 0.2V) = 5.2V minimum to 12.6V maximum. This 5.2V–12.6V range ensures reliable regulation even with modest input headroom, making it compatible with standard 5.5V or 6V LDO outputs and higher-voltage industrial rails. Operation below 5.2V risks loss of regulation and increased dropout error.

How does the MAX6195CESA achieve its low temperature coefficient?

The MAX6195CESA achieves ≤5ppm/°C temperature coefficient through a proprietary curvature-correction circuit combined with laser-trimmed precision thin-film resistors. This architecture actively compensates for second-order thermal nonlinearity in the bandgap core, resulting in near-linear output voltage vs. temperature behavior across -40°C to +85°C without external components or calibration.

Is the MAX6195CESA pin-compatible with other devices in the MAX6190 family?

Yes, all MAX6190–MAX6195/MAX6198 variants-including MAX6195CESA-are housed in identical 8-pin SO packages with identical pinout (IN, GND, OUT, and N.C. pins in fixed positions). This allows direct substitution within the family for different output voltages (1.25V to 5.0V) and accuracy grades (A/B/C), provided the application's voltage, accuracy, and tempco requirements are met.