LPV801 Datasheet, PDF (1/24 Pages) Texas Instruments – Nanopower Operational Amplifiers

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LPV801, LPV802
SNOSCZ3 – AUGUST 2016
LPV801/LPV802 320 nA Nanopower Operational Amplifiers
1 Features
•1 Nanopower Supply Current: 320 nA/channel (typ)
• Offset Voltage: 3.5 mV (max)
• Good TcVos: 1.5 µV/°C (typ)
• Unity Gain-Bandwidth: 8 kHz
• Unity-Gain Stable
• Low Input Bias Current : 0.1pA (typ)
• 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
• Gas Detectors such as CO and O₂
• Motion Detectors Using PIR Sensors
• Ionization Smoke Alarms
• Thermostats
• Remote Sensors, IoT
• Active RFID Readers and Tags
• Portable Medical Equipment
3 Description
The LPV801 (single) and LPV802 (dual) comprise a
family of ultra-low-power operational amplifiers for
“Always ON” sensing applications in 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 motion detecting
security systems 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 which reduces errors
commonly introduced in transimpedance amplifier
(TIA) configurations with megaohm feedback
resistors and high source impedance sensing
applications. 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.
The LPV80x amplifiers operate with a total supply
voltage as low as 1.6V, ensuring continuous
performance in low battery situations over the
extended temperature range of –40ºC to 125ºC. The
single and dual channel versions are available in
industry standard 5-pin SOT-23 and 8-pin VSSOP
packages respectively.
PART
NUMBER
LPV801
LPV802
Device Information⁽¹⁾
PACKAGE
BODY SIZE
SOT-23 (5)
VSSOP (8)
2.90 mm x 1.60 mm
3.00 mm × 3.00 mm
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
Nanopower Electrochemical Sensor Amplifier
Nanopower PIR Motion Sensor Amplifier
CE
RE
WE
VREF
+
LPV802a
IR
CF
R_Load
RF
V_REF
+
LPV802b
V_OUT
+
LPV802a
Output to
Comparator
VREF
+
LPV802b
1
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. PRODUCT PREVIEW Information. Product in design phase of
development. Subject to change or discontinuance without notice.