TP1941/TP1941N/TP1942/TP1944
68ns, 1.8V, Ultra-low Power, RRI, Push-Pull Output Comparators
Features
Description
The 3PEAK INCORPORATED TP194x families of
CMOS/TTL compatible comparators are offered in
single, dual, and quad configurations, and are
exceptionally versatile and easy to use.
The TP194x incorporate 3PEAK’s proprietary and
patented design techniques to achieve the ultimate
combination of high-speed (68ns propagation delay
under 1.8~5.5V wide supply range) and low power
consuming (46μA quiescent current per comparator).
These comparators are optimized for low power
1.8V, single-supply applications with greater than
rail-to-rail input operation, and also operate with
±0.9V to ±2.75V dual supplies. 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. The push-pull
output supports rail-to-rail output swing, and
interfaces with CMOS/TTL logic. The output toggle
frequency can reach a typical of 4 MHz while limiting
supply current surges and dynamic power
consumption during switching.
The TP1941 single comparators are available in
shout-down function, output latch version, and the
tiny SC70/SOT23 package for space-conservative
designs. All devices are specified for the
temperature range of –40°C to +85°C.
Fast Response Time: 68 ns Propagation Delay
Ultra-Low Supply Current: 46 μA per Channel
Offset Voltage: ± 3.0 mV Maximum
Offset Voltage Temperature Drift: 0.3 μV/°C
Input Bias Current: 6 pA Typical
Internal Hysteresis Ensures Clean Switching
Input Common-Mode Range Extends 200 mV
No Phase Reversal for Overdriven Inputs
Push-Pull, CMOS/TTL Compatible Output
Shut-down Function (TP1941N Only)
Output Latch (TP1941NU Only)
Down to 1.8V Supply Voltage: 1.8V to 5.5V
Green, Space-Saving SC70 Package Available
Applications
High-speed Line or Digital Line Receivers
High Speed Sampling Circuits
Peak and Zero-crossing Detectors
Threshold Detectors/Discriminators
Sensing at Ground or Supply Line
Logic Level Shifting or Translation
Window Comparators
IR Receivers
Clock and Data Signal Restoration
Telecom, Portable Communications
Portable and Battery Powered Systems
3PEAK and the 3PEAK logo are registered trademarks of
3PEAK INCORPORATED. All other trademarks are the property
of their respective owners.
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DEVICE
DESCRIPTION
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DD
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o
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1
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OUT
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2
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The TP1941 Comparator in IR Receivers
TP2015
/TP2016/TP2018
www.3peakic.com.cn
REV1.1
1
TP1941/TP1941N/TP1942/TP1944
68ns, 1.8V, Ultra-low Power, RRI, Push-Pull Output Comparators
Absolute Maximum Ratings
Note 1
Supply Voltage: V
+
– V
–
....................................6.0V
Input Voltage............................. V
–
– 0.3 to V
+
+ 0.3
Input Current: +IN, –IN,
Note 2
..........................±10mA
Output Current: OUT.................................... ±45mA
Output Short-Circuit Duration
Note 3
…......... Indefinite
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.
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
ESD, Electrostatic Discharge Protection
Symbol
HBM
CDM
Parameter
Human Body Model ESD
Charged Device Model ESD
Condition
MIL-STD-883H Method 3015.8
JEDEC-EIA/JESD22-C101E
Minimum Level
8
2
Unit
kV
kV
www.3peakic.com
REV1.0
3
TP1941/TP1941N/TP1942/TP1944
68ns, 1.8V, Ultra-low Power, RRI, Push-Pull Output Comparators
Electrical Characteristics
The
●
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at T
A
= 27°C.
V
DD
= +1.8V to +5.5V, V
IN+
= V
DD
, V
IN-
= 1.2V, R
PU
=10kΩ, C
L
=15pF.
SYMBOL
V
DD
V
OS
V
OS
TC
V
HYST
V
HYST
TC
I
B
I
OS
R
IN
C
IN
CMRR
V
CM
PSRR
V
OH
V
OL
I
SC
I
Q
I
Q(off)
V
IL
V
IH
t
ON
t
OFF
t
LPD
t
R
t
F
T
PD+
T
PD-
T
PDSKEW
PARAMETER
Supply Voltage
Input Offset Voltage
Note 1
Input Offset Voltage Drift
Note 1
Input Hysteresis Voltage
Note 1
Input Hysteresis Voltage Drift
Note 1
Input Bias Current
Input Offset Current
Input Resistance
Input Capacitance
Common Mode Rejection Ratio
Common-mode Input Voltage
Range
Power Supply Rejection Ratio
High-Level Output Voltage
Low-Level Output Voltage
Output Short-Circuit Current
Quiescent Current per Comparator
Supply Current in Shutdown
Note 2
SHDN Input Low Voltage
Note 2
SHDN Input High Voltage
Note 2
Turn-On Time
Note 2
Turn-Off Time
Note 2
Latch Propagation Delay
Note 3
Rising Time
CONDITIONS
●
V
CM
= 1.2V
V
CM
= 1.2V
V
CM
= 1.2V
V
CM
= 1.2V
V
CM
= 1.2V
MIN
1.8
-3
4
TYP
±0.6
0.3
6
20
6
4
> 100
2
4
70
MAX
5.5
+3
8
UNITS
V
mV
μV/°C
mV
μV/°C
pA
pA
GΩ
pF
dB
Differential
Common Mode
V
CM
= V
SS
to V
DD
50
V
SS
-0.1
V
DD
+0.1
75
V
SS
+0.3
25
46
58
1.5
0.2V
DD
V
dB
V
V
mA
μA
μA
V
V
μs
μs
ns
ns
ns
ns
ns
ns
I
OUT
=-1mA
I
OUT
=1mA
Sink or source current
●
●
60
V
DD
-0.3
Disable
Enable
SHDN Toggle from V
SS
to V
DD
SHDN Toggle from V
DD
to V
SS
●
●
0.8V
DD
15
1
200
5
5
Falling Time
Propagation Delay (Low-to-High)
Propagation Delay (High-to-Low)
Propagation Delay Skew
Overdrive=100mV, V
IN-
=1.2V
Overdrive=100mV, V
IN-
=1.2V
Overdrive=100mV, V
IN-
=1.2V
68
72
-4
Note 1:
The input offset voltage is the average of the input-referred trip points. The input hysteresis is the difference between the input-referred
trip points.
Note 2:
Specifications apply to the TP1941N with shutdown.
Note 3:
Specifications apply to the TP1941NU with shutdown and latch enable.
Note 4:
Propagation Delay Skew is defined as: t
PD-SKEW
= t
PD+
- t
PD-
.
4
REV1.1
www.3peakic.com.cn
Analogue and Mixed Signal
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