TP1945 / TP1946 / TP1948
3PEAK
1.8V Micropower, RRIO, Open-Drain Output Comparators
Features
Description
The 3PEAK TP194x single/dual/quad micropower
comparators feature rail-to-rail inputs and outputs,
and fully specified single-supply operation down to
+1.8V. The devices draw only 49μA per comparator
while reaching 70ns high-to-low response time, and
have open-drain outputs that can be pulled beyond
V– to 6V (max) above ground for maximum flexibility.
Down to 1.8V Supply Voltage: 1.8V to 5.5V
Low Supply Current: 49 μA per Channel
High-to-Low Propagation Delay: 70 ns
Offset Voltage: ± 3.0 mV Maximum
Offset Voltage Temperature Drift: 0.3 μV/°C
In addition, their rail-to-rail input common-mode
voltage range makes these comparators suitable for
ultra-low-voltage operation. The input common-
mode voltage range extends 200mV below ground
and 200mV above supply, allowing both ground and
supply sensing. The internal input hysteresis
eliminates output switching due to internal input
noise voltage, reducing current draw.
Input Bias Current: 6 pA Typical
Input Common-Mode Range Extends 200 mV
Internal Hysteresis Ensures Clean Switching
No Phase Reversal for Overdriven Inputs
Open-Drain Output for Maximum Flexibility
Green, Space-Saving SC70 Package Available
A +1.8V to +5.5V single-supply operating voltage
range makes the TP194x family of comparators
ideal for 2-cell battery-powered applications.
Applications
The TP1945 single comparator is available in tiny
SC70 package for space-conservative designs. All
chips are specified for the temperature range of
–40°C to +85°C.
Threshold Detectors/Discriminators
Sensing at Ground or Supply Line
Peak and Zero-crossing Detectors
Logic Level Shifting or Translation
Window Comparators
3PEAK and the 3PEAK logo are registered trademarks of
3PEAK INCORPORATED. All other trademarks are the property
of their respective owners.
IR Receivers
Clock and Data Signal Restoration
Telecom, Portable Communications
Portable and Battery Powered Systems
Related Products
DEVICE
DESCRIPTION
Fast 30ns, Low Power, Internal Hysteresis,
± 3mV Maximum VOS, – 0.2V to VDD + 0.2V RRI,
Push-Pull (CMOS/TTL) Output Comparators
TP1951/TP1951N
/TP1952/TP1954
VDD
VPU
R3
TP194x
Fast 30ns, Low Power, Internal Hysteresis,
± 3mV Maximum VOS, – 0.2V to VDD + 0.2V RRI,
Open-Drain Output Comparators
TP1955/TP1955N
/TP1956/TP1958
R1
RPU
Fast 68ns, 46µ A Micropower, Internal Hysteresis,
± 3mV Maximum VOS, – 0.2V to VDD + 0.2V RRI,
Push-Pull (CMOS/TTL) Output Comparators
TP1941/TP1941N
/TP1942/TP1944
VOUT
VIN
TP1931
/TP1932/TP1934
950ns, 3µ A, 1.8V, ± 2.5mV VOS-MAX, Internal
Hysteresis, RRI, Push-Pull Output Comparators
R2
TP1935
/TP1936/TP1938
950ns, 3µ A, 1.8V, ± 2.5mV VOS-MAX, Internal
Hysteresis, RRI, Open-Drain Comparators
Typical Application of the TP194x Comparators
Ultra-low 200nA, 13µ s, 1.6V, ± 2mV VOS-MAX,
Internal Hysteresis, RRI, Push-Pull (CMOS/TTL)
Output Comparators
TP2011
/TP2012/TP2014
Ultra-low 200nA, 13µ s, 1.6V, ± 2mV VOS-MAX
Internal Hysteresis, RRI, Open-Drain Output
Comparators
,
TP2015
/TP2016/TP2018
www.3peakic.com.cn
REV1.0
1