LPV542DNXR中文资料德州仪器数据手册PDF规格书

1 Features

1• Wide Supply Range: 1.6 V to 5.5 V

• Low Supply Current: 490 nA (typical/channel)

• Good Offset Voltage: 3 mV (maximum/room)

• Good TcVos: 1μV/°C (typical)

• Gain-Bandwidth: 8 kHz (typical)

• Rail-to-Rail Input and Output pico•

Unity-Gain Stable

• Low Input Bias Current : 1 pA (typ)

• EMI Hardened

• Temperature Range: -40°C to 125°C

• Thin 3 mm x 3 mm x 0.45 mm X1SON package

2 Applications

• Wearables

• Personal Health Monitors

• Battery Packs

• Mobile Phones and Tablets

• Solar-Powered or Energy Harvested Systems

• PIR, Smoke, Gas, and Fire Detection Systems

• Battery Powered Internet of Things (IoT) Devices

• Remote Sensors

• Micropower Reference Buffer

3 Description

The LPV542 is an ultra-low-power, dual operational

amplifier that provides 8kHz of bandwidth from 490nA of quiescent current making it well suited for battery-

powered applications such as health and fitness

wearables, building automation, and remote sensing

nodes.

Each amplifier has a CMOS input stage with pico•

amp bias currents which reduces errors commonly introduced in megaohm feedback resistance

topologies such as photodiode and charge sense

applications. In addition, the input common-mode

range extends to the power supply rails and the

output swings to within 3 mV of the rails, maintaining

the widest dynamic range possible. Likewise, EMI

protection is designed into the LPV542 in order to

reduce system sensitivity to unwanted RF signals

from mobile phones, WiFi, radio transmitters, and tag

readers.

The LPV542 operates on a supply voltage as low as

1.6 V, ensuring continuous superior performance in

low battery situations. The device is available in an 8-

pad, low-profile, leadless 3 mm x 3 mm x 0.45 mm

X1SON package and a standard 8 pin VSSOP.