Output Comparators. TP1945 Datasheet

TP1945 Comparators. Datasheet pdf. Equivalent

TP1945 Datasheet
Recommendation TP1945 Datasheet
Part TP1945
Description Open-Drain Output Comparators
Feature TP1945; 3PEAK TP1945 / TP1946 / TP1948 1.8V Micropower, RRIO, Open-Drain Output Comparators Features Desc.
Manufacture 3PEAK
Datasheet
Download TP1945 Datasheet




3PEAK TP1945
3PEAK
TP1945 / TP1946 / TP1948
1.8V Micropower, RRIO, Open-Drain Output Comparators
Features
Description
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
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
Applications
Threshold Detectors/Discriminators
Sensing at Ground or Supply Line
Peak and Zero-crossing Detectors
Logic Level Shifting or Translation
Window Comparators
IR Receivers
Clock and Data Signal Restoration
Telecom, Portable Communications
Portable and Battery Powered Systems
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
Vto 6V (max) above ground for maximum flexibility.
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.
A +1.8V to +5.5V single-supply operating voltage
range makes the TP194x family of comparators
ideal for 2-cell battery-powered 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.
3PEAK and the 3PEAK logo are registered trademarks of
3PEAK INCORPORATED. All other trademarks are the property
of their respective owners.
Related Products
VDD
R1
R2 VIN
VPU
R3
TP194x
RPU
VOUT
Typical Application of the TP194x Comparators
DEVICE
DESCRIPTION
TP1951/TP1951N
/TP1952/TP1954
Fast 30ns, Low Power, Internal Hysteresis,
± 3mV Maximum VOS, 0.2V to VDD + 0.2V RRI,
Push-Pull (CMOS/TTL) Output Comparators
TP1955/TP1955N
/TP1956/TP1958
Fast 30ns, Low Power, Internal Hysteresis,
± 3mV Maximum VOS, 0.2V to VDD + 0.2V RRI,
Open-Drain Output Comparators
TP1941/TP1941N
/TP1942/TP1944
Fast 68ns, 46µ A Micropower, Internal Hysteresis,
± 3mV Maximum VOS, 0.2V to VDD + 0.2V RRI,
Push-Pull (CMOS/TTL) Output Comparators
TP1931
950ns, 3µ A, 1.8V, ± 2.5mV VOS-MAX, Internal
/TP1932/TP1934 Hysteresis, RRI, Push-Pull Output Comparators
TP1935
/TP1936/TP1938
TP2011
/TP2012/TP2014
TP2015
/TP2016/TP2018
950ns, 3µ A, 1.8V, ± 2.5mV VOS-MAX, Internal
Hysteresis, RRI, Open-Drain Comparators
Ultra-low 200nA, 13µ s, 1.6V, ± 2mV VOS-MAX,
Internal Hysteresis, RRI, Push-Pull (CMOS/TTL)
Output Comparators
Ultra-low 200nA, 13µ s, 1.6V, ± 2mV VOS-MAX,
Internal Hysteresis, RRI, Open-Drain Output
Comparators
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3PEAK TP1945
TP1945 / TP1946 / TP1948
1.8V Micropower, RRIO, Open-Drain Output Comparators
Pin Configuration (Top View)
TP1945
5-Pin SOT23/SC70
(-T and -C Suffixes)
TP1945U
5-Pin SOT23/SC70
(-T and -C Suffixes)
TP1946
8-Pin SOT23/SOIC/MSOP
(-T, -S and -V Suffixes)
TP1948
14-Pin SOIC/TSSOP
(-S and -T Suffixes)
Out 1
V- 2
+In 3
5 V+
4 -In
NC 1
In 2
In 3
V- 4
TP1945
8-Pin SOIC
(-S Suffix)
8 NC
7 V+
6 Out
5 NC
+In 1
V- 2
-In 3
5 V+ Out A 1
In A 2
4 Out In A 3
V- 4
TP1945U2
5-Pin SOT23
(-T Suffix)
Out 1
V+ 2
+In 3
5 V-
4 -In
A
B
8 V+
7 Out B
6 In B
5 In B
Out A
In A
In A
V+
In B
In B
Out B
1
2
3
4
5
6
7
A
B
14 Out D
13 In D
D
12 In D
11 V-
10 In C
C
9 In C
8 Out C
Order Information
Model Name
Order Number
Package
Transport Media, Quantity
TP1945-TR
5-Pin SOT23
Tape and Reel, 3000
TP1945
TP1945-CR
5-Pin SC70
Tape and Reel, 3000
TP1945-SR
8-Pin SOIC
Tape and Reel, 4000
TP1945U
TP1945U-TR
TP1945U-CR
5-Pin SOT23
5-Pin SC70
Tape and Reel, 3000
Tape and Reel, 3000
TP1945U2
TP1945U2-TR
5-Pin SOT23
Tape and Reel, 3000
TP1946-TR
8-Pin SOT23
Tape and Reel, 3000
TP1946
TP1946-SR
8-Pin SOIC
Tape and Reel, 4000
TP1946-VR
8-Pin MSOP
Tape and Reel, 3000
TP1948
TP1948-SR
TP1948-TR
14-Pin SOIC
14-Pin TSSOP
Tape and Reel, 2500
Tape and Reel, 3000
Note (1): ‘YW’ is date coding scheme. 'Y' stands for calendar year, and 'W' stands for single workweek coding scheme.
Marking
Information
CT4YW (1)
CC4YW (1)
1945S
CA4YW (1)
CB4YW (1)
CE4YW (1)
C46YW (1)
C46S
C46V
1948S
1948T
Pin Functions
IN: Inverting Input of the Comparator. Voltage
range of this pin can go from V0.3V to V+ + 0.3V.
+IN: Non-Inverting Input of Comparator. This pin has
the same voltage range as IN.
NC: No Connection.
V+ (VDD): Positive Power Supply. Typically the
voltage is from 1.8V to 5.5V. Split supplies are
possible as long as the voltage between V+ and V
is between 1.8V and 5.5V. A bypass capacitor of
0.1μF as close to the part as possible should be used
between power supply pins or between supply pins
and ground.
V(VSS): Negative Power Supply. It is normally tied to
ground. It can also be tied to a voltage other than
ground as long as the voltage between V+ and Vis
from 1.8V to 5.5V. If it is not connected to ground,
bypass it with a capacitor of 0.1μF as close to the
part as possible.
OUT: Comparator Output. The voltage range
extends to within millivolts of each supply rail.
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3PEAK TP1945
TP1945 / TP1946 / TP1948
1.8V Micropower, RRIO, Open-Drain Output Comparators
Absolute Maximum Ratings Note 1
Supply Voltage: V+ V....................................6.0V
Open-Drain Output................................... V+ 6.0V
Input Voltage............................. V0.3 to V+ + 0.3
Difference Input Voltage.............V0.3 to V+ + 0.3
Input Current: +IN, IN, Note 2..........................±10mA
Output Short-Circuit Current........................ ±45mA
Output Short-Circuit Duration Note 3…......... Indefinite
Current at Output and Supply Pins............... ±50mA
Operating Temperature Range.........40°C to 85°C
Maximum Junction Temperature................... 150°C
Storage Temperature Range.......... 65°C to 150°C
Lead Temperature (Soldering, 10 sec) ......... 260°C
Note 1: Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. Exposure to any
Absolute Maximum Rating condition for extended periods may affect device reliability and lifetime.
Note 2: The inputs are protected by ESD protection diodes to each power supply. If the input extends more than 500mV beyond the power
supply, the input current should be limited to less than 10mA.
Note 3: A heat sink may be required to keep the junction temperature below the absolute maximum. This depends on the power supply voltage
and how many amplifiers are shorted. Thermal resistance varies with the amount of PC board metal connected to the package. The specified
values are for short traces connected to the leads.
ESD, Electrostatic Discharge Protection
Symbol
Parameter
HBM Human Body Model ESD
CDM Charged Device Model ESD
Condition
MIL-STD-883H Method 3015.8
JEDEC-EIA/JESD22-C101E
Minimum Level
8
2
Unit
kV
kV
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