TP2011U-TR [3PEAK]
Ultra-Low Power 200nA, 1.6V, RRIO, Push-Pull Output Comparators;型号: | TP2011U-TR |
厂家: | 3PEAK |
描述: | Ultra-Low Power 200nA, 1.6V, RRIO, Push-Pull Output Comparators |
文件: | 总21页 (文件大小:1674K) |
中文: | 中文翻译 | 下载: | 下载PDF数据表文档文件 |
TP2011/TP2012/TP2014
Ultra-Low Power 200nA, 1.6V, RRIO, Push-Pull Output Comparators
Features
Descriptions
The TP201x family of push-pull output comparators
features the world-class lowest nano-power (250nA
maximum) and fast 13μs response time capability,
allowing operation from 1.6V to 5.5V. Input
common-mode range beyond supply rails makes the
TP201x an ideal choice for power-sensitive,
low-voltage (2-cell) applications.
Ultra-Low Supply Current: 200 nA per channel
Fast Response Time: 13 μs Propagation Delay,
with 100 mV Overdrive
Internal Hysteresis for Clean Switching
Offset Voltage: ± 2.0 mV Maximum
Offset Voltage Temperature Drift: 0.3 μV/°C
The TP201x push-pull output supports rail-to-rail output
swing and interfaces with TTL /CMOS logic, and are
capable of driving heavy DC or capacitive loads. The
internal input hysteresis eliminates output switching
due to internal input noise voltage, reducing current
draw. The output limits supply current surges and
dynamic power consumption while switching. Beyond
the rails input and rail-to-rail output characteristics allow
the full power-supply voltage to be used for signal
range.
Input Bias Current: 6 pA Typical
Input Common-Mode Range Extends 200 mV
Push-Pull Output with ±25 mA Drive Capability
Output Latch (TP2011N Only)
No Phase Reversal for Overdriven Inputs
Low Supply Voltage: 1.6V to 5.5V
Micro-sized packages provide options for portable and
space-restricted applications. The single (TP2011) is
available in SC70-5, and the dual (TP2012) is available
in SOT23-8.
Applications
Battery Monitoring / Management
Alarm and Monitoring Circuits
Peak and Zero-crossing Detectors
Threshold Detectors/Discriminators
Sensing at Ground or Supply Line
Logic Level Shifting or Translation
Window Comparators
The related TP2015/6/8 family of comparators from
3PEAK has an open-drain output. Used with a pull-up
resistor, these devices can be used as level-shifters for
any desired voltage up to 10V and in wired-OR logic.
3PEAK and the 3PEAK logo are registered trademarks of
3PEAK Incorporated. All other trademarks are the property of their
respective owners.
Oscillators and RC Timers
Mobile Communications and Notebooks
Ultra-Low-Power Systems
Related Products
DEVICE
TP2015
DESCRIPTION
Ultra-low 200nA, 13µs, 1.6V, ±2mV VOS-MAX
Internal Hysteresis, RRI, Open-Drain Output
Comparators
,
/TP2016/TP2018
TP1931
/TP1932/TP1934
950ns, 3µA, 1.8V, ±2.5mV VOS-MAX, Internal
Hysteresis, RRI, Push-Pull Output Comparators
TP1935
/TP1936/TP1938
950ns, 3µA, 1.8V, ±2.5mV VOS-MAX, Internal
Hysteresis, RRI, Open-Drain Comparators
Fast 68ns, Low Power, Internal Hysteresis,
±3mV Maximum VOS, – 0.2V to VDD + 0.2V RRI,
Push-Pull (CMOS/TTL) Output Comparators
TP1941/TP1941N
/TP1942/TP1944
Typical Application of TP201x Comparators
Fast 68ns, Low Power, Internal Hysteresis,
±3mV Maximum VOS, – 0.2V to VDD + 0.2V RRI,
Open-Drain Output Comparators
TP1945/TP1945N
/TP1946/TP1948
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1
TP2011/TP2012/TP2014
Ultra-Low Power 200nA, 1.6V, RRIO, Push-Pull Output Comparators
Pin Configuration(Top View)
Order Information
Marking
Information
Model Name
Order Number
Package
Transport Media, Quantity
TP2011-TR
TP2011-CR
TP2011-SR
TP2011U-TR
TP2011U-CR
TP2011U2-TR
TP2011N-TR
TP2012-TR
TP2012-SR
TP2012-VR
TP2014-SR
TP2014-TR
5-Pin SOT23
5-Pin SC70
8-Pin SOIC
Tape and Reel, 3000
Tape and Reel, 3000
Tape and Reel, 4000
Tape and Reel, 3000
Tape and Reel, 3000
Tape and Reel, 3000
Tape and Reel, 3000
Tape and Reel, 3000
Tape and Reel, 4000
Tape and Reel, 3000
Tape and Reel, 2500
Tape and Reel, 3000
C1TYW (1)
C1CYW (1)
2011S
TP2011
(1)
5-Pin SOT23
5-Pin SC70
5-Pin SOT23
6-Pin SOT23
8-Pin SOT23
8-Pin SOIC
C1AYW
TP2011U
(1)
C1BYW
(1)
TP2011U2
TP2011N
C1EYW
(1)
C1NYW
C12YW (1)
TP2012
TP2014
2012S
8-Pin MSOP
14-Pin SOIC
14-Pin TSSOP
2012V
TP2014S
TP2014T
Note (1): ‘YW’ is date coding scheme. 'Y' stands for calendar year, and 'W' stands for single workweek coding scheme.
Pin Functions
N/C: No Connection.
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 V– is
from 1.6V 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.
–IN: Inverting Input of the Comparator. Voltage range of
this pin can go from V– – 0.3V to V+ + 0.3V.
+IN: Non-Inverting Input of Comparator. This pin has the
same voltage range as –IN.
V+ (VDD): Positive Power Supply. Typically the voltage is
from 1.6V to 5.5V. Split supplies are possible as long as
the voltage between V+ and V– is between 1.6V 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.
OUT: Comparator Output. The voltage range
extends to within millivolts of each supply rail.
LATCH: Active Low Latch enable. Latch enable
threshold is 1/2V+ above negative supply rail.
REV1.2
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TP2011/TP2012/TP2014
Ultra-Low Power 200nA, 1.6V, RRIO, Push-Pull Output Comparators
Note 1
Absolute Maximum Ratings
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.................................... ±25mA
Output Short-Circuit Duration Note 3…......... Indefinite
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
HBM
Parameter
Condition
Minimum Level
Unit
kV
Human Body Model ESD
Charged Device Model ESD
ANSI/ESDA/JEDEC JS-001
ANSI/ESDA/JEDEC JS-002
2
1
CDM
kV
Thermal Information
Package
RΘJA
RΘJC(Top)
Unit
8-Pin SOP
14-Pin SOP
14-Pin TSSOP
112.4
96.7
64.1
46.7
42.7
°C/W
°C/W
°C/W
108.1
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TP2011/TP2012/TP2014
Ultra-Low Power 200nA, 1.6V, RRIO, Push-Pull Output Comparators
Electrical Characteristics
The ● denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 27°C.
VDD = +1.6V to +5.5V, VIN+ = VDD, VIN- = 1.2V, CL =15pF.
SYMBOL PARAMETER
CONDITIONS
MIN
1.6
TYP
MAX
5.5
UNITS
V
VDD
VOS
VOS
VOS
Supply Voltage
●
Input Offset Voltage Note 1
Input Offset Voltage Note 1
Input Offset Voltage Note 1
VCM = 1.2V
VCM = 0V
-3.0
-3.0
-4.0
0.5
0.5
0.5
+3.0
+3.0
+4.0
mV
mV
mV
VCM = Vdd
VOS TC
VHYST
IB
Input Offset Voltage Drift Note 1
Input Hysteresis Voltage Note 1
Input Bias Current
VCM = 1.2V
VCM = 1.2V
VCM = 1.2V
VCM = 1.2V
0.3
4
6
4
μV/°C
mV
pA
2
7
IOS
Input Offset Current
pA
RIN
Input Resistance
> 100
2
4
GΩ
Differential
Common Mode
VCM = VSS to VDD
CIN
Input Capacitance
pF
CMRR
VCM
PSRR
VOH
VOL
ISC
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
50
V–
60
82
dB
V
dB
V
V
mA
nA
V+
90
IOUT=-1mA
IOUT=1mA
Sink or source current
●
●
VDD-0.3
VSS+0.3
250
25
200
IQ
160
tR
Rising Time
5
ns
ns
μs
μs
μs
tF
Falling Time
5
Propagation Delay (Low-to-High)
Propagation Delay (High-to-Low)
Propagation Delay Skew Note 2
tPD+
tPD-
tPD-SKEW
Overdrive=100mV, VIN- =1.2V
Overdrive=100mV, VIN- =1.2V
Overdrive=100mV, VIN- =1.2V
13
14
1
19
18
5
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: Propagation Delay Skew is defined as: tPDSKEW = tPD+ - tPD-.
REV1.2
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TP2011/TP2012/TP2014
Ultra-Low Power 200nA, 1.6V, RRIO, Push-Pull Output Comparators
Typical Performance Characteristics
Input Offset Voltage vs. Temperature
Input Hysteresis Voltage vs. Temperature
5
10
8
2.5
5V
6
0
-2.5
-5
5V
4
2
0
1.8V
1.8V
VCM=1.2V
-25
VCM=1.2V
-25
-50
0
25
50
75
100
-50
0
25
50
75
100
TEMPERATURE (
)
TEMPERATURE (
)
℃
℃
Quiescent Current vs. Temperature
Propagation Delay vs. Temperature
1000
25
20
15
10
5
tpd-@VDD=5V
tpd+@VDD=5V
800
600
400
200
0
5V
tpd-@VDD=1.8V
tpd+@VDD=1.8V
1.8V
VCM=1.2V
-50 -25
VCM=1.2V
-50
0
0
25
50
75
100
0
50
100
TEMPERATURE (
)
℃
TEMPERATURE (
)
℃
Propagation Delay Skew vs. Temperature
Propagation Delay vs. Overdrive Voltage
100
8
VDD=5V
VCM=2.5V
80
60
40
20
0
4
5V
0
tpd-
-4
1.8V
VCM=1.2V
tpd+
100
-8
-50
0
50
100
10
1V
TEMPERATURE (
)
℃
Common Mode Voltage (mV)
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TP2011/TP2012/TP2014
Ultra-Low Power 200nA, 1.6V, RRIO, Push-Pull Output Comparators
Typical Performance Characteristics
Propagation Delay Skew vs. Overdrive Voltage
Propagation Delay vs. Overdrive Voltage
20
100
VDD=5V
VCM=2.5V
VDD=1.8V
15
10
VCM=0.9V
80
60
40
20
0
5
0
-5
-10
-15
-20
tpd-
tpd+
10
100
1V
10
100
Common Mode Voltage (mV)
1V
Common Mode Voltage (mV)
Propagation Delay Skew vs. Overdrive Voltage
Input Offset Voltage vs. Common Mode Voltage
20
5
VDD=1.8V
VCM=0.9V
15
10
2.5
0
5
0
-5
-2.5
-10
-15
-20
VDD=5V
-5
0
1
2
3
4
5
10
100
1V
Common Mode Voltage (V)
Common Mode Voltage (mV)
Input Offset Voltage vs. Common Mode Voltage
Input Hysteresis Voltage vs. Common Mode Voltage
5
10
8
2.5
0
6
4
-2.5
2
VDD=1.8V
-5
VDD=5V
0
0
0.5
1
1.5
2
0
1
2
3
4
5
Common Mode Voltage (V)
Common Mode Voltage (V)
REV1.2
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TP2011/TP2012/TP2014
Ultra-Low Power 200nA, 1.6V, RRIO, Push-Pull Output Comparators
Typical Performance Characteristics
Input Hysteresis Voltage vs. Common Mode Voltage
Quiescent Current vs. Common Mode Voltage
10
8
1000
800
600
400
200
6
4
2
VDD=1.8V
0
VDD=5V
0
0
0.5
1
1.5
2
0
1
2
3
4
5
Common Mode Voltage (V)
Common Mode Voltage (V)
Quiescent Current vs. Common Mode Voltage
Propagation Delay V.S. Common Mode Voltage
1000
800
600
400
200
20
tpd+
15
tpd-
10
5
VDD=1.8V
0
VDD=5V
0
0
0.5
1
1.5
2
0
1
2
3
4
5
Common Mode Voltage (V)
Common Mode Voltage (V)
Propagation Delay vs. Common Mode Voltage
Propagation Delay Skew vs. Common Mode Voltage
20
5
15
2.5
0
tpd+
10
tpd-
5
-2.5
VDD=1.8V
0
VDD=5V
-5
0
0.5
1
1.5
2
0
1
2
3
4
5
Common Mode Voltage (V)
Common Mode Voltage (V)
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TP2011/TP2012/TP2014
Ultra-Low Power 200nA, 1.6V, RRIO, Push-Pull Output Comparators
Typical Performance Characteristics
Propagation Delay Skew vs. Common Mode Voltage
Input Offset Voltage Distribution
5
60%
50%
40%
30%
20%
10%
0%
1462 Samples
VDD=5V
2.5
0
VCM=1.2V
-2.5
VDD=1.8V
-5
-6 -5 -4 -3 -2 -1
0
1
2
3
4
5
6
0
0.5
1
1.5
2
Input Offset Voltage (mV)
Common Mode Voltage (V)
Input Hysteresis Voltage Distribution
Quiescent Current Distribution
40%
35%
30%
25%
20%
15%
10%
5%
60%
1462 Samples
VDD=5V
1462 Samples
VDD=5V
50%
40%
30%
20%
10%
0%
VCM=1.2V
VCM=1.2V
0%
0
1
2
3
4
5
6
7
8
9
10 11 12
140
160
180
200
220
240
260
Input Hysteresis Voltage (mV)
Quiscent Current (nA)
Low to High Propagation Delay Distribution
High to Low Propagation Delay Distribution
70%
45%
1462 Samples
1462 Samples
40%
60%
50%
40%
30%
20%
10%
0%
VDD=5V
VDD=5V
35%
VCM=1.2V
VCM=1.2V
30%
100mV overdrive
100mV overdrive
25%
20%
15%
10%
5%
0%
12
14
16
18
20
22
24
10
12
14
16
18
20
22
Propagation Low to High Delay (μs)
Propagation High to Low Delay (μs)
REV1.2
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TP2011/TP2012/TP2014
Ultra-Low Power 200nA, 1.6V, RRIO, Push-Pull Output Comparators
Typical Performance Characteristics
Propagation Delay Skew Distribution
Output Voltage Headroom vs. Output Load Current
5
50%
VDD=5V
1462 Samples
VDD=5V
45%
40%
35%
30%
25%
20%
15%
10%
5%
4
VCM=1.2V
Sourcing Current
3
100mV overdrive
2
Sinking Current
1
0%
0
-2
0
2
4
6
8
10
0
5
10
15
Propagation Delay Skew (μs)
Output Load Current (mA)
Output Voltage Headroom vs. Output Load Current
Output Voltage Headroom vs. Supply Voltage
2
400
VDD=1.8V
1.5
300
Sourcing Current
VOH
1
200
0.5
100
Sinking Current
VOL
IOUT=±1mA
0
0
0.0
0.5
1.0
1.5
2.0
1
2
3
4
5
Output Load Current (mA)
Supply Voltage (V)
Output Short Current vs. Supply Voltage
30
25
20
Isinking
15
10
Isourcing
5
0
1
2
3
4
5
Supply Voltage (V)
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TP2011/TP2012/TP2014
Ultra-Low Power 200nA, 1.6V, RRIO, Push-Pull Output Comparators
Operation
The TP201x family single-supply comparators feature
internal hysteresis, high speed, and low power. Input
signal range extends beyond the negative and positive
power supplies. The output can even extend all the way
to the negative supply. The input stage is active over
different ranges of common mode input voltage.
Rail-to-rail input voltage range and low-voltage
single-supply operation make these devices ideal for
portable equipment.
Applications Information
Inputs
The TP201x comparator family uses CMOS transistors at the input which prevent phase inversion when the input pins
exceed the supply voltages. Figure 1 shows an input voltage exceeding both supplies with no resulting phase
inversion.
6
Input Voltage
4
1KΩ
+In
2
Core
1KΩ
-In
0
Output Voltage
VDD=5V
-2
Time (100μs/div)
Chip
Figure 1. Comparator Response to Input Voltage
Figure 2. Equivalent Input Structure
The electrostatic discharge (ESD) protection input structure of two back-to-back diodes and 1kΩ series resistors are
used to limit the differential input voltage applied to the precision input of the comparator by clamping input voltages
that exceed supply voltages, as shown in Figure 2. Large differential voltages exceeding the supply voltage should be
avoided to prevent damage to the input stage.
Internal Hysteresis
Most high-speed comparators oscillate in the linear region because of noise or undesired parasitic feedback. This
tends to occur when the voltage on one input is at or equal to the voltage on the other input. To counter the parasitic
effects and noise, the TP201x implements internal hysteresis.
The hysteresis in a comparator creates two trip points: one for the rising input voltage and one for the falling input
voltage. The difference between the trip points is the hysteresis. When the comparator’s input voltages are equal, the
hysteresis effectively causes one comparator input voltage to move quickly past the other, thus taking the input out of
the region where oscillation occurs. Figure 3 illustrates the case where IN- is fixed and IN+ is varied. If the inputs were
reversed, the figure would look the same, except the output would be inverted.
REV1.2
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TP2011/TP2012/TP2014
Ultra-Low Power 200nA, 1.6V, RRIO, Push-Pull Output Comparators
-Vin-
-Vin-
0
0
Non-Inverting Comparator Output
Inverting Comparator Output
Figure 3. Comparator’s hysteresis and offset
External Hysteresis
Greater flexibility in selecting hysteresis is achieved by using external resistors. Hysteresis reduces output chattering
when one input is slowly moving past the other. It also helps in systems where it is best not to cycle between high and
low states too frequently (e.g., air conditioner thermostatic control). Output chatter also increases the dynamic supply
current.
Non-Inverting Comparator with Hysteresis
A non-inverting comparator with hysteresis requires a two-resistor network, as shown in Figure 4 and a voltage
reference (Vr) at the inverting input.
Figure 4. Non-Inverting Configuration with Hysteresis
When Vi is low, the output is also low. For the output to switch from low to high, Vi must rise up to Vtr. When Vi is high,
the output is also high. In order for the comparator to switch back to a low state, Vi must equal Vtf before the
non-inverting input V+ is again equal to Vr.
R
2
V
V
tr
r
R
R
2
1
R
1
V
(V
V
)
V
tf
r
DD
tf
R
1
R
2
R
R
2
1
V
V
r
tr
R
2
R
R
R
1
1
2
V
V
V
DD
r
tf
R
R
2
2
R
1
V
V V
tf
V
DD
tr
hyst
R
2
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TP2011/TP2012/TP2014
Ultra-Low Power 200nA, 1.6V, RRIO, Push-Pull Output Comparators
Inverting Comparator with Hysteresis
The inverting comparator with hysteresis requires a three-resistor network that is referenced to the comparator supply
voltage (VDD), as shown in Figure 5.
Figure 5. Inverting Configuration with Hysteresis
When Vi is greater than V+, the output voltage is low. In this case, the three network resistors can be presented as
paralleled resistor R2 || R3 in series with R1. When Vi at the inverting input is less than V+, the output voltage is high.
The three network resistors can be represented as R1 ||R3 in series with R2.
R
2
V
V
tr
tf
DD
||
R
R
R
2
1
3
||
R
R
2
3
V
V
DD
||
R
1
R
R
2
3
||
R
R
2
1
V
V V
tf
V
tr
DD
hyst
||
R
3
R
R
1
2
Low Input Bias Current
The TP201x family is a CMOS comparator family and features very low input bias current in pA range. The low input
bias current allows the comparators to be used in applications with high resistance sources. Care must be taken to
minimize PCB Surface Leakage. See below section on “PCB Surface Leakage” for more details.
PCB Surface Leakage
In applications where low input bias current is critical, Printed Circuit Board (PCB) surface leakage effects need to be
considered. Surface leakage is caused by humidity, dust or other contamination on the board. Under low humidity
conditions, a typical resistance between nearby traces is 1012Ω. A 5V difference would cause 5pA of current to flow,
which is greater than the TP201x’s input bias current at +27°C (±6pA, typical). It is recommended to use multi-layer
PCB layout and route the comparator’s -IN and +IN signal under the PCB surface.
The effective way to reduce surface leakage is to use a guard ring around sensitive pins (or traces). The guard ring is
biased at the same voltage as the sensitive pin. An example of this type of layout is shown in Figure 6 for Inverting
configuration application.
1. For Non-Inverting Configuration:
a) Connect the non-inverting pin (VIN+) to the input with a wire that does not touch the PCB surface.
b) Connect the guard ring to the inverting input pin (VIN–). This biases the guard ring to the same reference as the
comparator.
REV1.2
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TP2011/TP2012/TP2014
Ultra-Low Power 200nA, 1.6V, RRIO, Push-Pull Output Comparators
2. For Inverting Configuration:
a) Connect the guard ring to the non-inverting input pin (VIN+). This biases the guard ring to the same reference voltage as
the comparator (e.g., VDD/2 or ground).
b) Connect the inverting pin (VIN–) to the input with a wire that does not touch the PCB surface.
Figure 6. Example Guard Ring Layout for Inverting Comparator
Ground Sensing and Rail to Rail Output
The TP201x family implements a rail-to-rail topology that is capable of swinging to within 10mV of either rail. Since the
inputs can go 300mV beyond either rail, the comparator can easily perform ‘true ground’ sensing.
The maximum output current is a function of total supply voltage. As the supply voltage of the comparator increases,
the output current capability also increases. Attention must be paid to keep the junction temperature of the IC below
150°C when the output is in continuous short-circuit condition. The output of the amplifier has reverse-biased ESD
diodes connected to each supply. The output should not be forced more than 0.5V beyond either supply, otherwise
current will flow through these diodes.
ESD
The TP201x family has reverse-biased ESD protection diodes on all inputs and output. Input and output pins can not
be biased more than 300mV beyond either supply rail.
Power Supply Layout and Bypass
The TP201x family’s power supply pin should have a local bypass capacitor (i.e., 0.01μF to 0.1μF) within 2mm for
good high frequency performance. It can also use a bulk capacitor (i.e., 1μF or larger) within 100mm to provide large,
slow currents. This bulk capacitor can be shared with other analog parts.
Good ground layout improves performance by decreasing the amount of stray capacitance and noise at the
comparator’s inputs and outputs. To decrease stray capacitance, minimize PCB lengths and resistor leads, and place
external components as close to the comparator’ pins as possible.
Proper Board Layout
The TP201x family is a series of fast-switching, high-speed comparator and requires high-speed layout considerations.
For best results, the following layout guidelines should be followed:
1. Use a printed circuit board (PCB) with a good, unbroken low-inductance ground plane.
2. Place a decoupling capacitor (0.1μF ceramic, surface-mount capacitor) as close as possible to supply.
3. On the inputs and the output, keep lead lengths as short as possible to avoid unwanted parasitic feedback
around the comparator. Keep inputs away from the output.
4. Solder the device directly to the PCB rather than using a socket.
5. For slow-moving input signals, take care to prevent parasitic feedback. A small capacitor (1000 pF or less)
placed between the inputs can help eliminate oscillations in the transition region. This capacitor causes some
degradation to propagation delay when the impedance is low. The topside ground plane should be placed
between the output and inputs.
6. The ground pin ground trace should run under the device up to the bypass capacitor, thus shielding the inputs
from the outputs.
www.3peakic.com.cn
13
TP2011/TP2012/TP2014
Ultra-Low Power 200nA, 1.6V, RRIO, Push-Pull Output Comparators
Typical Applications
IR Receiver
The TP2011 is an ideal candidate to be used as an infrared receiver shown in Figure 7. The infrared photo diode
creates a current relative to the amount of infrared light present. The current creates a voltage across RD. When this
voltage level cross the voltage applied by the voltage divider to the inverting input, the output transitions. Optional Ro
provides additional hysteresis for noise immunity.
VDD
Ro
R1
TP2011
Vo
R2
RD
Figure 7. IR Receiver
Relaxation Oscillator
A relaxation oscillator using TP2011 is shown in Figure 8. Resistors R1 and R2 set the bias point at the comparator's
inverting input. The period of oscillator is set by the time constant of R4 and C1. The maximum frequency is limited by
the large signal propagation delay of the comparator. TP2011’s low propagation delay guarantees the high frequency
oscillation.
If the inverted input (VC1) is lower than the non-inverting input (VA), the output is high which charges C1 through R4 until
VC1 is equal to VA. The value of VA at this point is
V
R
2
DD
|| R R
2
V
A1
R
1
3
At this point the comparator switches pulling down the output to the negative rail. The value of VA at this point is
V
R || R
DD
2
3
V
A2
R
R || R
3
1
2
If R1=R2=R3, then VA1=2VDD /3, and VA2= VDD/3
The capacitor C1 now discharges through R4, and the voltage VC decreases till it is equal to VA2, at which point the
comparator switches again, bringing it back to the initial stage. The time period is equal to twice the time it takes to
discharge C1 from 2VDD/3 to VDD/3. Hence the frequency is:
1
Freq
2 ln2 R C
4
1
REV1.2
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14
TP2011/TP2012/TP2014
Ultra-Low Power 200nA, 1.6V, RRIO, Push-Pull Output Comparators
VDD
R3
VO
R1
R2
T2011
VA
t
t
VC1
Vo
VC1
2/3VDD
1/3VDD
R4
C1
R1=R2=R3
Figure 8. Relaxation Oscillator
Windowed Comparator
Figure 9. shows one approach to designing a windowed comparator using a single TP2012 chip. Choose different
thresholds by changing the values of R1, R2, and R3. OutA provides an active-low undervoltage indication, and OutB
gives an active-low overvoltage indication. ANDing the two outputs provides an active-high, power-good signal. When
input voltage Vi reaches the overvoltage threshold VOH, the OutB gets low. Once Vi falls to the undervoltage threshold
VUH, the OutA gets low. When VUH<Vi<VOH, the AND Gate gets high.
V
V (R R R )/R
r
1 2 3 1
OH
V
V (R R R )/(R R
)
UH
r
1
2
3
1
2
Vi
R1
R2
R3
TP2012
+InA
+InB
-InA
-InB
Power
Good
OutA UnderVolt
AND
Gate
Vr
OverVolt
OutB
Figure 9. Windowed Comparator
www.3peakic.com.cn
15
TP2011/TP2012/TP2014
Ultra-Low Power 200nA, 1.6V, RRIO, Push-Pull Output Comparators
Package Outline Dimensions
SOT23-5 / SOT23-6
Dimensions
Dimensions
In Inches
In Millimeters
Symbol
Min
Max
Min
Max
A1
A2
b
0.000
1.050
0.300
2.820
1.500
2.650
0.100
1.150
0.400
3.020
1.700
2.950
0.000
0.041
0.012
0.111
0.059
0.104
0.004
0.045
0.016
0.119
0.067
0.116
D
E
E1
e
0.950TYP
0.037TYP
e1
L1
θ
1.800
0.300
0°
2.000
0.460
8°
0.071
0.012
0°
0.079
0.024
8°
REV1.2
www.3peakic.com.cn
16
TP2011/TP2012/TP2014
Ultra-Low Power 200nA, 1.6V, RRIO, Push-Pull Output Comparators
Package Outline Dimensions
SC-70-5 / SC-70-6 (SOT353 / SOT363)
Dimensions
Dimensions In
Inches
In Millimeters
Symbol
Min
Max
Min
Max
A1
A2
b
0.000
0.900
0.150
0.080
2.000
1.150
2.150
0.100
1.000
0.350
0.150
2.200
1.350
2.450
0.000
0.035
0.006
0.003
0.079
0.045
0.085
0.004
0.039
0.014
0.006
0.087
0.053
0.096
C
D
E
E1
e
0.650TYP
0.026TYP
e1
L1
θ
1.200
0.260
0°
1.400
0.460
8°
0.047
0.010
0°
0.055
0.018
8°
www.3peakic.com.cn
17
TP2011/TP2012/TP2014
Ultra-Low Power 200nA, 1.6V, RRIO, Push-Pull Output Comparators
Package Outline Dimensions
SO-8 (SOIC-8)
A2
C
θ
L1
A1
e
E
D
Dimensions
Dimensions In
Inches
In Millimeters
Symbol
Min
Max
Min
Max
A1
A2
0.100
1.350
0.330
0.190
4.780
3.800
5.800
0.250
1.550
0.510
0.250
5.000
4.000
6.300
0.004
0.053
0.013
0.007
0.188
0.150
0.228
0.010
0.061
0.020
0.010
0.197
0.157
0.248
E1
b
C
D
E
E1
e
1.270TYP
0.050TYP
L1
θ
0.400
0°
1.270
8°
0.016
0°
0.050
8°
b
REV1.2
www.3peakic.com.cn
18
TP2011/TP2012/TP2014
Ultra-Low Power 200nA, 1.6V, RRIO, Push-Pull Output Comparators
Package Outline Dimensions
MSOP-8
Dimensions
Dimensions In
Inches
In Millimeters
Symbol
Min
Max
Min
Max
A
0.800
0.000
0.760
0.30 TYP
0.15 TYP
2.900
0.65 TYP
2.900
4.700
0.410
0°
1.200
0.200
0.970
0.031
0.000
0.030
0.012 TYP
0.006 TYP
0.114
0.026
0.114
0.185
0.016
0°
0.047
0.008
0.038
A1
A2
b
E
E1
C
D
3.100
0.122
e
e
b
E
3.100
5.100
0.650
6°
0.122
0.201
0.026
6°
E1
L1
θ
D
A1
R1
R
θ
L
L1
L2
www.3peakic.com.cn
19
TP2011/TP2012/TP2014
Ultra-Low Power 200nA, 1.6V, RRIO, Push-Pull Output Comparators
Package Outline Dimensions
SO-14 (SOIC-14)
Dimensions
In Millimeters
TYP
Symbol
MIN
1.35
0.10
1.25
0.36
8.53
5.80
3.80
MAX
1.75
0.25
1.65
0.49
8.73
6.20
4.00
A
A1
A2
b
1.60
0.15
1.45
D
8.63
6.00
E
E1
e
3.90
1.27 BSC
0.60
L
0.45
0°
0.80
8°
L1
L2
θ
1.04 REF
0.25 BSC
REV1.2
www.3peakic.com.cn
20
TP2011/TP2012/TP2014
Ultra-Low Power 200nA, 1.6V, RRIO, Push-Pull Output Comparators
Package Outline Dimensions
TSSOP-14
Dimensions
In Millimeters
E1
E
Symbol
MIN
-
TYP
MAX
1.20
0.15
1.05
0.28
0.19
5.06
6.60
4.50
A
A1
A2
b
-
0.05
0.90
0.20
0.10
4.86
6.20
4.30
-
1.00
-
e
c
c
-
4.96
D
D
E
6.40
E1
e
4.40
0.65 BSC
0.60
L
0.45
0.75
A1
L1
L2
R
1.00 REF
0.25 BSC
-
0.09
0°
-
R1
θ
-
8°
R
θ
L
L1
L2
www.3peakic.com.cn
21
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