Analog Devices Inc./Maxim Integrated MAX6160ESA+

Overview

MAX6160ESA+ from Maxim Integrated is an adjustable, low-dropout, micropower three-terminal voltage reference delivering 1.23V to (VIN − 0.2V) output with ±1% initial accuracy, 200mV dropout, and 75μA supply current independent of input voltage. It operates from 2.7V to 12.6V and is used in precision ADC/DAC biasing, portable instrumentation, and battery-powered data-acquisition systems.

For engineers reviewing the MAX6160ESA+ datasheet, MAX6160ESA+ pinout, MAX6160ESA+ application, or MAX6160ESA+ equivalent, key selection criteria include its adjustable output range, ultra-low quiescent current, guaranteed 100ppm/°C max temperature coefficient, stability with up to 10nF capacitive loads, and SOT143-4 or SO-8 package options.

Technical Context

The MAX6160ESA+ uses a bandgap-based reference core with an internal ADJ feedback node referenced to 1.23V, enabling precise resistor-divider programming of output voltage. Its architecture ensures supply current remains stable across input voltage (2.7V–12.6V) and temperature (−40°C to +85°C), minimizing battery drain in portable designs.

Unlike two-terminal references, it eliminates external current-setting resistors and avoids load-dependent current draw. The ADJ pin draws only 70nA at 1.23V, and output regulation maintains ≤1mV/mA sourcing load regulation and ≤10mV/mA sinking load regulation over full temperature range.

Key Specifications

Pinout & Package

The MAX6160ESA+ is available in 8-pin SO package (SOIC narrow, 150mil), with pin 1 marked by notch or dot. Pin assignments are validated per Maxim's official SO top-view diagram.

Key Features

Applications

Equivalent & Alternatives

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

Compared with LT1019CS8-2.5#PBF and REF5025IDR, the MAX6160ESA+ uniquely balances adjustability, micropower operation, and industrial tempco in a single SO-8 footprint-making it optimal for cost-sensitive, battery-constrained, multi-voltage designs where ±1% initial accuracy is acceptable.

Availability

MAX6160ESA+ is available at Aetrix Electronics and suitable for portable instrumentation, battery-powered data loggers, and industrial sensor signal chains requiring stable component supply and long-term production continuity.

Supply support for MAX6160ESA+ 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, mixed-signal, and power-management ICs for industrial, medical, and communications applications.

The MAX61xx family was engineered specifically for low-power, high-stability voltage referencing in space- and energy-constrained systems-emphasizing dropout minimization, supply-current independence, and wide output programmability.

FAQ

What is the minimum input voltage required for regulation in MAX6160ESA+?

The MAX6160ESA+ requires input voltage ≥ (VOUT + 200mV) to maintain regulation. For example, if configured for 2.5V output, VIN must be ≥2.7V. This 200mV dropout is guaranteed across −40°C to +85°C and up to 1mA load. The device supports VIN up to 12.6V, making it compatible with both 3V and 5V systems as well as higher-supply industrial rails. Always verify minimum VIN using the actual programmed VOUT in your design.

Can MAX6160ESA+ drive a 10nF capacitive load without oscillation?

Yes, the MAX6160ESA+ is explicitly characterized and guaranteed stable with capacitive loads from 0nF to 10nF-no external compensation required. This eliminates the need for output bypass capacitors in most applications, simplifying layout and reducing BOM count. However, if your design uses >10nF (e.g., for charge reservoirs), stability must be verified empirically, as phase margin degrades beyond the specified limit. The 10nF spec applies to all operating conditions including full temperature and load range.

How do I calculate resistor values to set a specific output voltage on MAX6160ESA+?

To set VOUT on MAX6160ESA+, use R1 = (1.06 × 10⁵) × (VOUT / 1.23) Ω and R2 = R1 / (VOUT / 1.23 − 1). For a 4.096V output, R1 ≈ 350kΩ and R2 ≈ 208kΩ (both 0.1% tolerance). Maxim specifies R1 tolerance ≤±5% to minimize tempco degradation. The ADJ pin's 70nA input current is compensated by the 1.06×10⁵ scaling factor-using standard E96 values within this tolerance ensures ≤100ppm/°C performance. Always validate final VOUT with bench measurement.

Is MAX6160ESA+ suitable for automotive applications?

No, MAX6160ESA+ is rated for −40°C to +85°C operation and is not AEC-Q200 qualified. It lacks automotive-grade screening, extended temperature validation (−40°C to +125°C), and enhanced reliability testing required for under-hood or safety-critical vehicle systems. For automotive use, consider Maxim's MAX6018 or Analog Devices' ADR45xx series, which offer AEC-Q200 variants, wider temp ranges, and qualification documentation. MAX6160ESA+ remains ideal for industrial, medical, and consumer portable equipment within its specified grade.

Does MAX6160ESA+ require an input bypass capacitor?

A 0.1μF ceramic capacitor is recommended at the IN pin for optimal line-transient response-especially in noisy or dynamically loaded supply environments-but is not strictly required for DC regulation. Maxim's Typical Operating Circuit shows this capacitor placed as close as possible to the IN pin. In low-noise, well-regulated supplies (e.g., LDO outputs), the device functions correctly without it. Omitting the capacitor may increase output perturbation during fast input voltage steps, so evaluate transient behavior in your specific application using oscilloscope measurements on MAX6160ESA+.