Maxim MAX40023-4低功耗低噪音单-双放大器应用方案

Maxim公司的MAX40023/MAX40024是单路/双路放大器,最佳用在功率敏感而又需要低噪音和非常低漏电输入电流(偏压电流)的应用.MAX40023/MAX40024每路仅消耗17μA(典型)电流,同时具有低到32nV/√Hz的输入电压噪音,室温时的输入偏压电流小于1pA.器件工作电压1.6V到3.6V,具有省功耗关断模式,内部有EMI抑制,工作温度-40C到 +125C.器件采用6点WLP和6引脚SOT23封装(单路)和9点WLP和10引脚TDFN封装(双路).主要用在可穿戴医疗电子,工业传感器和电池供电设备.本文介绍了MAX40023/MAX40024主要优势和特性,框图,可穿戴ECG框图以及评估板MAX40024 EVK主要特性,电路图,材料清单和PCB设计图.

 The MAX40023/MAX40024 are single and dual amplifiers optimized for power-sensitive applications that require low noise and very low-leakage input current (bias current).

The MAX40023/MAX40024 amplifiers consume less than 17μA (typ) of supply current per channel, but also feature incredibly low noise as low as 32nV/√Hz. The input bias current is <1pA at room temperature.

These amplifiers are available in a space-saving, 6-bump wafer-level package (WLP) with a 0.4mm bump pitch (single), 9-bump WLP (dual), 6-pin SOT23 (single), and 10-pin TDFN (dual). They are designed for use as a sensor interface in wearable medical and industrial sensor applications.

The MAX40023/MAX40024 amplifiers operate from a 1.6V to 3.6V power supply voltage and are specified over the -40C to +125C operating temperature range.

The MAX40023/MAX40024 feature a combination of low input current and voltage noise, rail-to-rail input and output voltage swing, low supply voltage, and low-power operation. High-impedance inputs on the MAX40023/MAX40024 make them ideal for use as transimpedance amplifiers and high-impedance sensor interface front-ends in medical and industrial applications. The MAX40023/MAX40024 can interface with small signals from either current sources or high-output impedance voltage sources. Applications include photodiode interfaces, pH sensors, capacitive pressure sensors, chemical analysis ...