LPV812中文资料德州仪器数据手册PDF规格书

1 Features

1• Nanopower Supply Current: 425 nA/channel

• Offset Voltage: 300 μV (max)

• TcVos: 1 μV/°C

• Gain-Bandwidth: 8 kHz

• Unity-Gain Stable

• Low Input Bias Current : 100 fA

• Wide Supply Range: 1.6 V to 5.5 V

• Rail-to-Rail Output

• No Output Reversals

• EMI Protection

• Temperature Range: –40°C to 125°C

• Industry Standard Packages:

– Single in 5-pin SOT-23

– Dual in 8-pin VSSOP

2 Applications

• CO and O2 Gas Detectors (TIDA-0756)

• PIR Motion Detectors

• Current Sensing

• Thermostats

• IoT Remote Sensors

• Active RFID Readers and Tags

• Portable Medical Equipment

3 Description

The LPV811 (single) and LPV812 (dual) are a ultralow-

power precision operational amplifier family for

“Always ON” sensing applications in battery powered

wireless and low power wired equipment. With 8 kHz

of bandwidth from 425 nA of quiescent current and a

trimmed offset voltage to under 300μV, the LPV81x

amplifiers provide the required precision while

minimizing power consumption in equipment such as

gas detectors and portable electronic devices where

operational battery-life is critical.

In addition to being ultra-low-power, the LPV81x

amplifiers have CMOS input stages with fempto-amp

bias currents for impedance source applications. The

LPV81x amplifiers also feature a negative-rail sensing

input stage and a rail-to-rail output stage that swings

within millivolts of the rails, maintaining the widest

dynamic range possible. EMI protection is designed

into the LPV81x in order to reduce system sensitivity

to unwanted RF signals from mobile phones, WiFi,

radio transmitters, and tag readers.