SGM8740X [SGMICRO]
42ns, 3V/5V, Single-Supply, Low Power, Rail-to-Rail I/O Comparator;
| 型号： | SGM8740X |
| 厂家： | 
Shengbang Microelectronics Co, Ltd |
| 描述： | 42ns, 3V/5V, Single-Supply, Low Power, Rail-to-Rail I/O Comparator |
| 文件： | 总14页 (文件大小：758K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
SGM8740X
42ns, 3V/5V, Single-Supply, Low Power,
Rail-to-Rail I/O Comparator
GENERAL DESCRIPTION
FEATURES
The SGM8740X is a single, high speed, low power
comparator, which features a fast 42ns propagation
delay. The device is optimized for low voltage operation
on 3V or 5V supply, and consumes only 155µA supply
current.
● High Speed: 42ns Propagation Delay (10mV
Overdrive)
● Low Supply Current: 155μA (TYP) at VS = 3V
● Low Offset Voltage: 5.5mV (MAX)
● Rail-to-Rail Input and Output
● Supply Voltage Range: 2.7V to 5.5V
● Optimized for 3V and 5V Applications
● Output Swing within 210mV from Rails with
4mA Output Current
The SGM8740X supports rail-to-rail input and output
operation. The input common mode voltage range is
from -0.1V to (+VS) + 0.1V, and the output voltage
swing is within 210mV of the rails without external
pull-up or pull-down resistor. The device can be
compatible with CMOS and TTL logics. Any input or
output pin has a continuous short-circuit protection to
both power supply rails. The SGM8740X has an
internal hysteresis for reducing comparator sensitivity
to noise, even when the input signals move slowly.
● Supports CMOS or TTL Logic
● Internal Hysteresis for Reducing Comparator
Sensitivity to Noise
● -40℃ to +125℃ Operating Temperature Range
● Available in Green SOT-23-5 and SC70-5 Packages
APPLICATIONS
The SGM8740X is available in Green SOT-23-5 and
SC70-5 packages. It is rated over the -40℃ to +125℃
temperature range.
3V or 5V Applications
Portable/Battery-Powered Equipment
Mobile Phones
Zero-Crossing Detectors
Threshold Detectors
Line Receiver Units
SG Micro Corp
NOVEMBER 2022 – REV. A
www.sg-micro.com
42ns, 3V/5V, Single-Supply, Low Power,
Rail-to-Rail I/O Comparator
SGM8740X
PACKAGE/ORDERING INFORMATION
SPECIFIED
TEMPERATURE
RANGE
PACKAGE
DESCRIPTION
ORDERING
NUMBER
PACKAGE
MARKING
PACKING
OPTION
MODEL
SOT-23-5
SC70-5
SGM8740XN5G/TR
SGM8740XC5G/TR
MCFXX
MCGXX
Tape and Reel, 3000
Tape and Reel, 3000
-40℃ to +125℃
-40℃ to +125℃
SGM8740X
MARKING INFORMATION
NOTE: XX = Date Code.
YYY X X
Date Code - Week
Date Code - Year
Serial Number
Green (RoHS & HSF): SG Micro Corp defines "Green" to mean Pb-Free (RoHS compatible) and free of halogen substances. If
you have additional comments or questions, please contact your SGMICRO representative directly.
ABSOLUTE MAXIMUM RATINGS
Failureto observe proper handlingand installation procedures
can cause damage. ESD damage can range from subtle
performance degradation tocomplete device failure. Precision
integrated circuits may be more susceptible to damage
because even small parametric changes could cause the
device not to meet the published specifications.
Supply Voltage, +VS to -VS ................................................6V
Differential Input Voltage, |VID|........................................... VS
Voltage at Input/Output Pins....... (-VS) - 0.3V to (+VS) + 0.3V
Junction Temperature.................................................+150℃
Storage Temperature Range.......................-65℃ to +150℃
Lead Temperature (Soldering, 10s)............................+260℃
ESD Susceptibility
DISCLAIMER
HBM.............................................................................2000V
CDM ............................................................................1000V
SG Micro Corp reserves the right to make any change in
circuit design, or specifications without prior notice.
RECOMMENDED OPERATING CONDITIONS
Operating Temperature Range.....................-40℃ to +125℃
PIN CONFIGURATIONS
(TOP VIEW)
OVERSTRESS CAUTION
Stresses beyond those listed in Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to
absolute maximum rating conditions for extended periods
may affect reliability. Functional operation of the device at any
conditions beyond those indicated in the Recommended
Operating Conditions section is not implied.
OUT
-VS
1
2
5
4
+VS
-IN
_
+
+IN
3
ESD SENSITIVITY CAUTION
SOT-23-5/SC70-5
This integrated circuit can be damaged if ESD protections are
not considered carefully. SGMICRO recommends that all
integrated circuits be handled with appropriate precautions.
SG Micro Corp
www.sg-micro.com
NOVEMBER 2022
2
42ns, 3V/5V, Single-Supply, Low Power,
Rail-to-Rail I/O Comparator
SGM8740X
ELECTRICAL CHARACTERISTICS
(VS = 5V, VCM = 0V, Full = -40℃ to +125℃, typical values are at TA = +25℃, unless otherwise noted.)
PARAMETER
SYMBOL
CONDITIONS
TEMP
MIN
TYP
1.0
10
MAX
UNITS
Input Characteristics
5.5
6
+25℃
Full
Input Offset Voltage
Input Bias Current
VOS
VCM = 0V
mV
pA
200
+25℃
Full
IB
VS = 2.7V to 5.5V, VCM = VS/2
VS = 2.7V to 5.5V, VCM = VS/2
7000
200
10
+25℃
Full
Input Offset Current
IOS
VCM
pA
V
1000
(+VS) + 0.1
Input Common Mode Voltage Range (1)
Common Mode Rejection Ratio
Full
-0.1
65
78
1.2
210
180
32
+25℃
Full
CMRR
VHYST
VCM = 0V to 5V
VCM = 0V
dB
mV
62
Input Hysteresis
+25℃
Output Characteristics
285
330
235
280
+25℃
Full
VOH
VCM = VS/2, VOD = 100mV, IOUT = 4mA
VCM = VS/2, VOD = 100mV, IOUT = -4mA
Output Voltage Swing from Rail
Output Short-Circuit Current
mV
mA
+25℃
Full
VOL
20
15
22
16
+25℃
Full
ISOURCE
VCM = VS/2, VOD = 100mV, Out to VS/2
32
+25℃
Full
ISINK
Power Supply
Operating Supply Voltage
VS
Full
+25℃
Full
2.7
65
58
5.5
V
75
Power Supply Rejection Ratio
Supply Current
PSRR
VS = 2.7V to 5.5V, VCM = 0V
dB
155
160
215
250
230
270
+25℃
Full
VS = 3V, VCM = VS/2, VOD = 100mV,
V
OUT = L, IOUT = 0mA
IS
µA
+25℃
Full
VS = 5V, VCM = VS/2, VOD = 100mV,
OUT = L, IOUT = 0mA
V
NOTE:
1. This value is from PD test. For the range of common mode voltage, the maximum input common mode voltage can reach (+VS)
+ 0.1V without any damage to SGM8740X.
SG Micro Corp
www.sg-micro.com
NOVEMBER 2022
3
42ns, 3V/5V, Single-Supply, Low Power,
Rail-to-Rail I/O Comparator
SGM8740X
SWITCHING CHARACTERISTICS
(VS = 3V, VCM = 0V, Full = -40℃ to +125℃, typical values are at TA = +25℃, unless otherwise noted.)
PARAMETER
SYMBOL
CONDITIONS
TEMP
+25℃
+25℃
+25℃
+25℃
+25℃
+25℃
+25℃
+25℃
MIN
TYP
37
29
42
23
8
MAX
UNITS
VOD = 10mV
Propagation Delay (High to Low)
tPHL
ns
VOD = 100mV
VOD = 10mV
VOD = 100mV
VOD = 10mV
VOD = 100mV
VOD = 10mV
VOD = 100mV
Propagation Delay (Low to High)
Rise Time
tPLH
tRISE
tFALL
ns
ns
ns
7
6
Fall Time
6
SG Micro Corp
www.sg-micro.com
NOVEMBER 2022
4
42ns, 3V/5V, Single-Supply, Low Power,
Rail-to-Rail I/O Comparator
SGM8740X
TYPICAL PERFORMANCE CHARACTERISTICS
Output Low Voltage vs. Temperature
ISINK = 4mA
Output High Voltage vs. Temperature
ISOURCE = 4mA
350
300
250
200
150
100
500
420
340
260
180
100
VS = 3V
VS = 3V
VS = 5V
VS = 5V
-50
-25
0
25
50
75
100 125
-50
-25
0
25
50
75
100 125
Temperature (℃)
Temperature (℃)
Output Short-Circuit (Sink) Current vs. Temperature
Output Short-Circuit (Source) Current vs. Temperature
50
50
40
30
20
10
0
40
30
20
10
0
VS = 5V
VS = 5V
VS = 3V
VS = 3V
50
-50
-25
0
25
75
100 125
-50
-25
0
25
50
75
100 125
Temperature (℃)
Temperature (℃)
Supply Current vs. Temperature
Sinusoid Response at 4MHz
VS = 3V, VCM = 0V
200
180
160
140
120
100
0V
VIN
VS = 5V
VS = 3V
VOUT
0V
Time (50ns/div)
-50
-25
0
25
50
75
100 125
Temperature (℃)
SG Micro Corp
www.sg-micro.com
NOVEMBER 2022
5
42ns, 3V/5V, Single-Supply, Low Power,
Rail-to-Rail I/O Comparator
SGM8740X
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
Propagation Delay vs. Input Overdrive
Propagation Delay vs. Capacitive Load
50
45
40
35
30
25
20
50
45
40
35
30
25
20
VS = 3V, VCM = 0V, RL = 10kΩ, VOD = 100mV
VS = 3V, VCM = 0V, RL = 10kΩ, CL = 18pF
L-H
H-L
L-H
H-L
0
30
60
90
120
150
180
0
40
80
120
160
200
Capacitive Load (pF)
Input Overdrive (mV)
Propagation Delay (L-H)
Propagation Delay (L-H)
VS = 3V, VCM = 0V, CL = 15pF, VOD = 10mV
VS = 3V, VCM = 0V, CL = 15pF, VOD = 100mV
0V
VIN
0V
VIN
VOUT
0V
VOUT
0V
Time (10ns/div)
Time (10ns/div)
Propagation Delay (H-L)
Propagation Delay (H-L)
VS = 3V, VCM = 0V, CL = 15pF, VOD = 10mV
VS = 3V, VCM = 0V, CL = 15pF, VOD = 100mV
VIN
0V
VIN
0V
VOUT
VOUT
0V
0V
Time (10ns/div)
Time (10ns/div)
SG Micro Corp
www.sg-micro.com
NOVEMBER 2022
6
42ns, 3V/5V, Single-Supply, Low Power,
Rail-to-Rail I/O Comparator
SGM8740X
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
Input Offset Voltage Production Distribution
25
12040 Samples
1 Production Lot
20
15
10
5
0
Input Offset Voltage (mV)
SG Micro Corp
www.sg-micro.com
NOVEMBER 2022
7
42ns, 3V/5V, Single-Supply, Low Power,
Rail-to-Rail I/O Comparator
SGM8740X
DETAILED DESCRIPTION
The SGM8740X is a single, high speed, low power
comparator with internal hysteresis. The device is
optimized for low voltage operation from 2.7V to 5.5V
single supply. It supports rail-to-rail input and output
operation. With 4mA output current, the output voltage
swing is within 210mV of the rails without external
pull-up or pull-down circuitry. The SGM8740X is
suitable for portable equipment. It can be compatible
with CMOS and TTL logics.
On the condition shown in Figure 1, the -IN is fixed
while +IN is varied, and the corresponding output is
shown under the figure of input signal. However, if +IN
is fixed while -IN is varied, the output will be inverted.
Output Structure
In Figure 2, the SGM8740X has a push-pull output
stage. When output is changed from logic high/low to
low/high, the changed sink/source current pulls/pushes
output pin to logic low/high. Beginning this transition,
larger sink/source current is used to create a high slew
rate transit from high/low to low/high. Once the output
voltage reaches VOL/VOH, it will reduce the sink/source
current to a just right value to maintain the VOL/VOH
static condition. This current-driven push-pull output
stage will significantly reduce the power consumption in
application system.
There are a lot of comparators switched frequently for
the linear region as the effect of noise and parasitic
parameters, and the condition of this negative situation
is when the one input of the comparator tends to reach
the other input voltage. In order to ease the effect of
noise and parasitic parameter, there is a 1.2mV internal
hysteresis inside the comparator.
There are two trip points which are made by the
comparator: the trip points when rising edge occurs and
the trip points when falling edge occurs. And the gap
between two trip points is the hysteresis of the
comparator. The offset voltage VOS is defined as the
average value of the two trip points. For the condition
which two inputs of the comparator are nearly equal,
the internal hysteresis will launch to avoid the
frequently switching at this case. For the normal
comparator other than SGM8740X, the users usually
use external resistors connected at +IN pin to provide
hysteresis, while the internal hysteresis of SGM8740X
can provide internal hysteresis without any external
component. However, if users need more hysteresis to
reject the influence of noise or parasitic parameters,
please add the external resistors at +IN pin to increase
the hysteresis.
If low slew rate transition is needed in system design,
adjusting the load capacitance will change the slew rate.
The heavier capacitive load will slow down the output
voltage transition. This feature will be used to reduce
the interference generated by fast edge of transition
between 1 and 0 in noise-sensitive system.
+VS
ISOURCE
Output
ISINK
-VS
VTRIP+
VHYST
VTRIP-
VIN+
V
TRIP+ + VTRIP-
VOS
=
2
Figure 2. Push-Pull Output Structure
V
IN- = 0
VOH
Comparator
Output
VOL
Figure 1. The Waveform for Input and Output,
Non-Inverting Input Varied
SG Micro Corp
www.sg-micro.com
NOVEMBER 2022
8
42ns, 3V/5V, Single-Supply, Low Power,
Rail-to-Rail I/O Comparator
SGM8740X
APPLICATION INFORMATION
Application Circuits
Layout and Bypassing
V
DD = 3.3V
Good power supply decoupling, layout and grounding
are very important for SGM8740X to realize the full
high-speed capabilities in system, following skills will be
used:
VREF
SDI
VDD
Serial
Digital
Input
8-Bit DAC
DACOUT
+
A 0.1µF to 4.7µF range ceramic capacitor is used to
SGM8740X
_
provide good power supply decoupling. This ceramic
capacitor must be placed as close to +VS pin as
possible.
GND
VSS
Analog
Input
For grounding, unbroken and low-inductance ground
plane is a good choice.
Figure 3. A Threshold Detector Controlled by 8-Bit DAC
For Layout, use short PCB trace to avoid unwanted
parasitic feedback around the comparator. SGM8740X
must be soldered directly to the PCB and the socket is
not recommended.
VS = 3V
Coax Line
10kΩ
+
Clean
Digital
Signal
SGM8740X
_
20kΩ
VS = 3V
3V
0
20kΩ
Figure 4. The Application of Line Receiver
SG Micro Corp
www.sg-micro.com
NOVEMBER 2022
9
42ns, 3V/5V, Single-Supply, Low Power,
Rail-to-Rail I/O Comparator
SGM8740X
REVISION HISTORY
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Original (NOVEMBER 2022) to REV.A
Page
Changed from product preview to production data.............................................................................................................................................All
SG Micro Corp
www.sg-micro.com
NOVEMBER 2022
10
PACKAGE INFORMATION
PACKAGE OUTLINE DIMENSIONS
SOT-23-5
1.90
D
e1
2.59
E1
E
0.99
b
e
0.95
0.69
RECOMMENDED LAND PATTERN (Unit: mm)
L
A2
A
ccc
C
SEATING PLANE
A1
θ
c
C
0.25
Dimensions In Millimeters
Symbol
MIN
MOD
MAX
1.450
0.150
1.300
0.500
0.220
3.050
1.750
3.000
A
A1
A2
b
-
-
0.000
0.900
0.300
0.080
2.750
1.450
2.600
-
-
-
c
-
D
-
E
-
E1
e
-
0.950 BSC
e1
L
1.900 BSC
0.300
0°
-
-
0.600
8°
θ
ccc
0.100
NOTES:
1. This drawing is subject to change without notice.
2. The dimensions do not include mold flashes, protrusions or gate burrs.
3. Reference JEDEC MO-178.
SG Micro Corp
TX00033.001
www.sg-micro.com
PACKAGE INFORMATION
PACKAGE OUTLINE DIMENSIONS
SC70-5
D
e1
0.65
e
1.9
E1
E
0.75
b
0.4
1.3
RECOMMENDED LAND PATTERN (Unit: mm)
L
L1
A
A1
A2
c
θ
0.20
Dimensions
In Millimeters
Dimensions
In Inches
Symbol
MIN
MAX
1.100
0.100
1.000
0.350
0.220
2.200
1.350
2.450
MIN
MAX
A
A1
A2
b
0.800
0.000
0.800
0.150
0.080
2.000
1.150
2.150
0.031
0.000
0.031
0.006
0.003
0.079
0.045
0.085
0.043
0.004
0.039
0.014
0.009
0.087
0.053
0.096
c
D
E
E1
e
0.65 TYP
1.300 BSC
0.525 REF
0.026 TYP
0.051 BSC
0.021 REF
e1
L
L1
θ
0.260
0°
0.460
8°
0.010
0°
0.018
8°
NOTES:
1. Body dimensions do not include mode flash or protrusion.
2. This drawing is subject to change without notice.
SG Micro Corp
TX00043.001
www.sg-micro.com
PACKAGE INFORMATION
TAPE AND REEL INFORMATION
REEL DIMENSIONS
TAPE DIMENSIONS
P2
P0
W
Q2
Q4
Q2
Q4
Q2
Q4
Q1
Q3
Q1
Q3
Q1
Q3
B0
Reel Diameter
P1
A0
K0
Reel Width (W1)
DIRECTION OF FEED
NOTE: The picture is only for reference. Please make the object as the standard.
KEY PARAMETER LIST OF TAPE AND REEL
Reel Width
Reel
Diameter
A0
B0
K0
P0
P1
P2
W
Pin1
Package Type
W1
(mm)
(mm) (mm) (mm) (mm) (mm) (mm) (mm) Quadrant
SOT-23-5
SC70-5
7″
7″
9.5
9.5
3.20
2.40
3.20
2.50
1.40
1.20
4.0
4.0
4.0
4.0
2.0
2.0
8.0
8.0
Q3
Q3
SG Micro Corp
TX10000.000
www.sg-micro.com
PACKAGE INFORMATION
CARTON BOX DIMENSIONS
NOTE: The picture is only for reference. Please make the object as the standard.
KEY PARAMETER LIST OF CARTON BOX
Length
(mm)
Width
(mm)
Height
(mm)
Reel Type
Pizza/Carton
7″ (Option)
7″
368
442
227
410
224
224
8
18
SG Micro Corp
www.sg-micro.com
TX20000.000
相关型号：
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