TLV8544 Datasheet, PDF (1/18 Pages) Texas Instruments – 500 nA RRIO Nanopower Operational Amplifier for Cost-Optimized Systems

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TLV8544
SNOSD29 – DECEMBER 2016
TLV8544 500 nA RRIO Nanopower Operational Amplifier for Cost-Optimized Systems
1 Features
•1 For Cost-Optimized Systems
• Nanopower Supply Current: 500 nA/channel
• Offset Voltage: 4 mV (Max)
• TcVos: 1.5 µV/°C
• Gain-Bandwidth: 8 kHz
• Unity-Gain Stable
• Low Input Bias Current: 100 fA
• Wide Supply Range: 1.7 V to 3.6 V
• Rail to Rail Input And Output (RRIO)
• Temperature Range –40°C to 125°C
• Industry Standard Package
– Quad in 14-pin TSSOP
2 Applications
• Gas Detectors
• Motion Detectors using PIR sensors
• Motion Detectors using microwave sensors
• Ionizaton Smoke Alarms
• Thermostats
• Remote Sensors, IoT (Internet of Things)
• Active RFID Readers and Tags
• Portable Medical Equipment
3 Description
The TLV8544 ultra-low-power operational amplifier is
ideal for cost-optimized sensing applications in
wireless and low-power wired equipment. The
TLV8544 amplifier minimizes power consumption in
equipment such as motion detecting security systems
(like microwave and PIR motion sensing) where
operational battery life is critical. It also has a
carefully designed CMOS input stage enabling very
low, femto-amp bias currents, thereby reducing I_BIAS
and I_OS errors that would otherwise impact sensitive
applications like transimpedance amplifier (TIA)
configurations with megaohm feedback resistors, and
high source impedance sensing applicaitons.
Additionally, built-in EMI protection reduces sensitivity
to unwanted RF signals from sources like mobile
phones, WiFi, radio transmitters and tab readers.
The TLV8544 amplifier operates with a single supply
voltage down to 1.7V, providing continuous
performance in low battery situations over the
extended temperature range of -40ºC to 125ºC. The
quad TLV8544 is available in the industry standard
14-pin TSSOP package.
PART
NUMBER
TLV8544
Device Information⁽¹⁾
PACKAGE
BODY SIZE
TSSOP (14)
5.00 mm × 4.40 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Low Power PIR Motion Detector
3.3V
PIR _D
-
+
S
Vin
+
-
+
TLV8544
_A
+
TLV8544
_B
Gain Stages
3.3V
_
TLV8544
C
+
MCU I/O
+
TLV8544
_^D
MCU I/O
Window
Comparator
Quiescent Supply Current vs. Supply Voltage
650
600
550
500
450
400
Iq (nA) at 125°C
350
Iq (nA) at 25°C
Iq (nA) at -40°C
300
1.6 1.8 2.0 2.2 2.4 2.6 2.8 3.0 3.2 3.4 3.6
Supply Voltage (V)
C001
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. ADVANCE INFORMATION for pre-production products; subject to
change without notice.