+

VREF

+

VREF

RLoad

LPV802a

LPV802b

CE

WE

RE

CF

RF

VOUT

+

Output to

Comparator

LPV802a

IR

+

LPV802b

VREF

Product

Folder

Sample &

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Technical

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Software

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Reference

Design

An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.

LPV801, LPV802

SNOSCZ3B – AUGUST 2016 – REVISED NOVEMBER 2016

LPV801/LPV802 320 nA Nanopower Operational Amplifiers

1

1 Features

1

•

Nanopower Supply Current: 320 nA/channel

•

Offset Voltage: 3.5 mV (max)

•

TcVos: 1 µV/°C

•

Unity Gain-Bandwidth: 8 kHz

•

Wide Supply Range: 1.6 V to 5.5 V

•

Low Input Bias Current : 0.1 pA

•

Unity-Gain Stable

•

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-00854)

•

PIR Motion Detectors (TIDA-00489)

•

Ionization Smoke Alarms

•

Thermostats

•

IoT Remote Sensors

•

Active RFID Readers and Tags

•

Portable Medical Equipment

(1)

For all available packages, see the orderable addendum at

the end of the data sheet.

3 Description

The LPV801 (single) and LPV802 (dual) comprise a

family of ultra-low-power operational amplifiers for

sensing applications in battery powered wireless and

low power wired equipment. With 8kHz of bandwidth

from

320nA

of

quiescent

current,

the

LPV80x

amplifiers minimize power consumption in equipment

such as CO detectors, smoke detectors and PIR

motion detectors where operational battery-life is

critical.

In addition to being ultra-low-power, the LPV80x

amplifiers have CMOS input stages with typically

femto-amp bias currents. The LPV80x amplifiers also

feature a negative-rail sensing input stage and a rail-

to-rail output stage that is capable of swinging within

millivolts of the rails, maintaining the widest dynamic

range possible. EMI protection is designed into the

LPV80x in order to reduce system sensitivity to

unwanted RF signals from mobile phones, WiFi, radio

transmitters and tag readers.

Device Information(1)

PART

NUMBER

PACKAGE

BODY SIZE

LPV801

SOT-23 (5)

2.90 mm x 1.60 mm

LPV802

VSSOP (8)

3.00 mm × 3.00 mm

LPV8xx Family of Nanopower Amplifiers

PART

NUMBER

CHANNELS

SUPPLY

CURRENT

(Typ/Ch)

OFFSET

VOLTAGE

(Max)

LPV801

1

450 nA

3.5 mV

LPV802

2

320 nA

3.5 mV

LPV811

1

450 nA

370 µV

LPV812

2

425 nA

300 µV

Nanopower Amplifier in Electrochemical Sensor

Nanopower Amplifier in PIR Motion Detector