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MAX4244

单/双/四路、+1.8V/10µA、SOT23封装、超摆幅运算放大器

概述

说明

The MAX4240–MAX4244 family of micropower op amps operate from a single +1.8V to +5.5V supply or dual ±0.9V to ±2.75V supplies and have Beyond-the-Rails™ inputs and rail-to-rail output capabilities. These amplifiers provide a 90kHz gain-bandwidth product while using only 10µA of supply current per amplifier. The MAX4241/MAX4243 have a low-power shutdown mode that reduces supply current to less than 1µA and forces the output into a high-impedance state. Although the minimum operating voltage is specified at +1.8V, these devices typically operate down to +1.5V. The combination of ultra-low-voltage operation, Beyond-the-Rails inputs, rail-to-rail outputs, and ultra-low power consumption makes these devices ideal for any portable/two-cell battery-powered system.

These amplifiers have an input common-mode range that extends 200mV beyond each rail, and their outputs typically swing to within 9mV of the rails with a 100kΩ load. Beyond-the-Rails input and rail-to-rail output characteristics allow the full power-supply voltage to be used for signal range. The combination of low input offset voltage, low input bias current, and high open-loop gain makes them suitable for low-power/low-voltage precision applications.

The MAX4240 is offered in a space-saving 5-pin SOT23 package. All specifications are guaranteed over the -40°C to +85°C extended temperature range.

MAX4240、MAX4241、MAX4242、MAX4243、MAX4244：引脚配置

放大+

关键特性

Ultra-Low-Voltage Operation:
- Guaranteed Down to +1.8V
- Typical Operation to +1.5V
Ultra-Low Power Consumption:
- 10µA Supply Current per Amplifier
- 1µA Shutdown Mode (MAX4241/MAX4243)
- Up to 200,000 Hours Operation from Two AA Alkaline Cells
Beyond-the-Rails Input Common-Mode Range
Outputs Swing Rail-to-Rail
No Phase Reversal for Overdriven Inputs
200µV Input Offset Voltage
Unity-Gain Stable for Capacitive Loads up to 200pF
90kHz Gain-Bandwidth Product
Available in Space-Saving 5-Pin SOT23 and 8-Pin µMAX® Packages