TP2121/TP2121N/TP2122/TP2124
1.8V, 600nA Nanopower, Rail-to-Rail Input/Output Op-amps
Features
Description
The TP212x are ultra-low power, precision CMOS
op-amps featuring a maximum supply current of
950nA per amplifier with an ultra-low typical input
bias current of 1fA. Analog trim and calibration
routine reduce input offset voltage to below 1.5mV,
and the precision temperature compensation
technique makes offset voltage temperature drift at
0.5μV/°C, which allowing use of the TP212x in
systems with high gain without creating excessively
Supply Current: 950nA Maximum /Amplifier
Stable 18kHz GBWP with 10mV/μs Slew Rate
Offset Voltage: 1.5mV Maximum
Ultra-low VOS TC: 0.5μV/°C
Ultra-low Input Bias Current: 1fA Typical
High 120dB Open-Loop Voltage Gain
Unity Gain Stable for 1,000nF Capacitive Load
Rail-to-Rail Input/Output Voltage Range
Outputs Source and Sink 20mA of Load Current
No Phase Reversal for Overdriven Inputs
Ultra-low Single-Supply Operation Down to +1.8V
Shutdown Current: 3nA Typical (TP2121N)
–40°C to 125°C Operation Range
large output offset errors.
The TP212x are unity gain stable with 1,000nF
capacitive load with a constant 18kHz GBWP,
10mV/μs slew rate, which make them appropriate
for low frequency applications, such as battery
current monitoring and sensor conditioning. The
TP212x can operate from a single-supply voltage of
+1.8V to +6.0V or a dual-supply voltage of ±0.9V to
±3.0V. Beyond the rails input and rail-to-rail output
characteristics allow the full power-supply voltage to
be used for signal range.
Robust 8kV – HBM and 2kV – CDM ESD Rating
Green, Popular Type Package
The combined features make the TP212x ideal
choices for battery-powered applications because
they minimize errors due to power supply voltage
variations over the lifetime of the battery and
maintain high CMRR even for a rail-to-rail input
op-amp. Mobile accessories, wireless remote
sensing, backup battery sensors, and single-Li+ or
2-cell NiCd/Alkaline battery powered systems can
benefit from the features of the TP212x op-amps.
Applications
Handsets and Mobile Accessories
Current Sensing
Wireless Remote Sensors, Active RFID Readers
Environment/Gas/Oxygen Sensors
Threshold Detectors/Discriminators
Low Power Filters
For applications that require power-down, the
TP2121N has a low-power shutdown mode that
reduces supply current to 3nA, and forces the output
into a high-impedance state.
Battery or Solar Powered Devices
Sensor Network Powered by Energy Scavenging
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3PEAK INCORPORATED. All other trademarks are the property
of their respective owners.
Ultra-low Supply Current Op-amps:
Supply Current
GBWP
0.3 μA
0.6 μA
4 μA
10 kHz
18 kHz
150 kHz
TP1511
Single
TP2111
TP2121
With Shut-down TP2111N TP2121N TP1511N
Dual
TP2112
TP2114
TP2122
TP2124
TP1512
TP1514
Quad
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VOUT ICC R3 ( 1)
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TP2121 in Low Side Battery Current Sensor
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