SGM8742 [SGMICRO]
45ns, 3V/5V, Single-Supply, Low Power, Rail-to-Rail I/O Comparator;
| 型号： | SGM8742 |
| 厂家： | 
Shengbang Microelectronics Co, Ltd |
| 描述： | 45ns, 3V/5V, Single-Supply, Low Power, Rail-to-Rail I/O Comparator |
| 文件： | 总13页 (文件大小：733K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
SGM8742
45ns, 3V/5V, Single-Supply, Low Power,
Rail-to-Rail I/O Comparator
GENERAL DESCRIPTION
FEATURES
The SGM8742 is a dual, high speed, low power
comparator, which features a fast 45ns propagation
delay. The device is optimized for low voltage operation
on 3V or 5V supply, and consumes only 305µA supply
current.
● High Speed: 45ns Propagation Delay (10mV
Overdrive)
● Low Supply Current: 305μA (TYP) at VS = 3V
● Low Offset Voltage: 0.9mV (TYP)
● Rail-to-Rail Input and Output
● Supply Voltage Range: 2.7V to 5.5V
● Optimized for 3V and 5V Applications
● Output Swing to within 200mV from Rails with
4mA Output Current
The SGM8742 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 0.2V 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 SGM8742 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 +85℃ Operating Temperature Range
● Available in Green SOIC-8 and MSOP-8 Packages
APPLICATIONS
The SGM8742 is available in Green SOIC-8 and
MSOP-8 packages. It is rated over the -40℃ to +85℃
temperature range.
3V or 5V Applications
Portable/Battery-Powered Equipment
Mobile Phones
Zero-Crossing Detectors
Threshold Detectors
Line Receiver Units
SG Micro Corp
AUGUST 2022 – REV. A. 1
www.sg-micro.com
45ns, 3V/5V, Single-Supply, Low Power,
Rail-to-Rail I/O Comparator
SGM8742
PACKAGE/ORDERING INFORMATION
SPECIFIED
TEMPERATURE
RANGE
PACKAGE
DESCRIPTION
ORDERING
NUMBER
PACKAGE
MARKING
PACKING
OPTION
MODEL
SGM
8742YS8
XXXXX
SGM8742
YMS8
SOIC-8
SGM8742YS8G/TR
Tape and Reel, 2500
Tape and Reel, 4000
-40℃ to +85℃
-40℃ to +85℃
SGM8742
MSOP-8
SGM8742YMS8G/TR
XXXXX
MARKING INFORMATION
NOTE: XXXXX = Date Code and Vendor Code.
X X X X X
Vendor Code
Date Code - Week
Date Code - Year
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
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
SG Micro Corp reserves the right to make any change in
HBM.............................................................................6000V
MM.................................................................................400V
circuit design, or specifications without prior notice.
PIN CONFIGURATIONS
RECOMMENDED OPERATING CONDITIONS
Operating Temperature Range.......................-40℃ to +85℃
(TOP VIEW)
OVERSTRESS CAUTION
OUTA
-INA
+INA
-VS
1
2
3
4
8
7
6
5
+VS
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.
_
OUTB
-INB
+INB
_
+
+
ESD SENSITIVITY CAUTION
This integrated circuit can be damaged if ESD protections are
not considered carefully. SGMICRO recommends that all
integrated circuits be handled with appropriate precautions.
Failureto observe proper handlingand installation procedures
SOIC-8/MSOP-8
SG Micro Corp
www.sg-micro.com
AUGUST 2022
2
45ns, 3V/5V, Single-Supply, Low Power,
Rail-to-Rail I/O Comparator
SGM8742
ELECTRICAL CHARACTERISTICS
(VS = 5.0V, VCM = 0V, CL = 15pF, typical values are at TA = +25℃, unless otherwise noted.)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
5.5
UNITS
Operating Supply Voltage (1)
Input Common Mode Voltage Range (2)
VS
2.7
V
V
VCM
-0.1
VS + 0.1
5
VS = 5V, VCM = 0V
0.9
Input Offset Voltage (3)
Input Hysteresis (4)
VOS
mV
mV
5.8
-40℃ ≤ TA ≤ +85℃
VHYST
ISOURCE
VS = 5V, VCM = 0V
2.8
33
VS = 5V, Out to VS/2
21
17
-40℃ ≤ TA ≤ +85℃
Output Short-Circuit Current
mA
VS = 5V, Out to VS/2
-32
78
-20
-15
ISINK
CMRR
PSRR
VOH
-40℃ ≤ TA ≤ +85℃
VS = 5V, VCM = 0V to 5V
-40℃ ≤ TA ≤ +85℃
60
54
59
55
Common Mode Rejection Ratio (5)
Power Supply Rejection Ratio
dB
dB
VCM = 0V, VS = 2.7V to 5.5V
-40℃ ≤ TA ≤ +85℃
77
VS = 5V, IOUT = 4mA
198
180
305
322
450
480
231
258
400
445
440
500
-40℃ ≤ TA ≤ +85℃
Output Voltage Swing from Rail
mV
µA
VS = 5V, IOUT = -4mA
-40℃ ≤ TA ≤ +85℃
VOL
VS = 3V, IOUT = 0
-40℃ ≤ TA ≤ +85℃
Supply Current
IS
VS = 5V, IOUT = 0
-40℃ ≤ TA ≤ +85℃
VS = 3V, Overdrive = 10mV
VS = 3V, Overdrive = 100mV
VS = 3V, Overdrive = 10mV
VS = 3V, Overdrive = 100mV
VS = 3V, Overdrive = 10mV
VS = 3V, Overdrive = 100mV
VS = 3V, Overdrive = 10mV
VS = 3V, Overdrive = 100mV
45
20
35
25
9
Propagation Delay (High to Low)
Propagation Delay (Low to High)
Rise Time
ns
ns
ns
ns
tRISE
8
8
Fall Time
tFALL
5
NOTES:
1. This value is from PSRR test.
2. 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 SGM8742.
3. VOS is the midway voltage for the hysteresis zone of the comparator.
4. The input hysteresis is the gap between the upper threshold where the output of the comparator switches to high position and
the lower threshold where the output of the comparator switches to low position.
5. CMRR is defined over the condition of whole input common mode range.
SG Micro Corp
www.sg-micro.com
AUGUST 2022
3
45ns, 3V/5V, Single-Supply, Low Power,
Rail-to-Rail I/O Comparator
SGM8742
TYPICAL PERFORMANCE CHARACTERISTICS
Supply Current vs. Temperature
500
Sinusoid Response at 4MHz
VS = 3V
VCM = 0V
400
VS = 5V
VIN
300
VS = 3V
200
100
VOUT
0
-50
-25
0
25
50
75
100
Time (50ns/div)
Temperature (℃)
Output High Voltage vs. Temperature
VS = 3V
Output Low Voltage vs. Temperature
VS = 3V
420
350
280
210
140
70
300
250
200
150
100
50
VS = 5V
VS = 5V
ISOURCE = 4mA
ISINK = 4mA
0
0
-50 -25
0
25
50
75
100
-50 -25
0
25
50
75
100
Temperature (℃)
Temperature (℃)
Output Short-Circuit (Source) Current vs. Temperature
60
Output Short-Circuit (Sink) Current vs. Temperature
0
VS = 3V
50
-10
-20
-30
-40
-50
-60
VS = 5V
40
30
20
10
VS = 5V
VS = 3V
0
-50
-25
0
25
50
75
100
-50
-25
0
25
50
75
100
Temperature (℃)
Temperature (℃)
SG Micro Corp
www.sg-micro.com
AUGUST 2022
4
45ns, 3V/5V, Single-Supply, Low Power,
Rail-to-Rail I/O Comparator
SGM8742
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
Propagation Delay vs. Capacitive Load
S = 3V, VCM = 0V
Propagation Delay vs. Input Overdrive
45
40
35
30
25
20
15
45
40
35
30
25
20
15
V
VS = 3V, VCM = 0V
RL = 10kΩ, VOD = 100mV
RL = 10kΩ, CL = 18pF
L-H
L-H
H-L
H-L
0
40
80
120
160
200
0
30
60
90
120
150
180
Input Overdrive (mV)
Capacitive Load (pF)
Propagation Delay (L-H)
Propagation Delay (L-H)
VOD = 100mV, VCM = 0V
VOD = 10mV, VCM = 0V
0V
VIN
0V
VIN
VOUT
0V
VOUT
0V
Time (10ns/div)
Time (10ns/div)
Propagation Delay (H-L)
Propagation Delay (H-L)
VOD = 100mV, VCM = 0V
V
OD = 10mV, VCM = 0V
VIN
0V
VIN
0V
VOUT
VOUT
0V
0V
Time (10ns/div)
Time (10ns/div)
SG Micro Corp
www.sg-micro.com
AUGUST 2022
5
45ns, 3V/5V, Single-Supply, Low Power,
Rail-to-Rail I/O Comparator
SGM8742
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
Offset Voltage Production Distribution
35
10900 Samples
1 Production Lot
30
25
20
15
10
5
0
Offset Voltage (mV)
SG Micro Corp
www.sg-micro.com
AUGUST 2022
6
45ns, 3V/5V, Single-Supply, Low Power,
Rail-to-Rail I/O Comparator
SGM8742
DETAILED DESCRIPTION
The SGM8742 is a dual, 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 0.2V of the rails without external pull-up
or pull-down circuitry. The SGM8742 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 SGM8742 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 2.8mV 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 SGM8742, the users usually use
external resistors connected at +IN pin to provide
hysteresis, while the internal hysteresis of SGM8742
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
VIN- = 0
VOH
Comparator
Output
VOL
Figure 1. The Waveform for Input and Output,
Non-Inverting Input Varied
SG Micro Corp
www.sg-micro.com
AUGUST 2022
7
45ns, 3V/5V, Single-Supply, Low Power,
Rail-to-Rail I/O Comparator
SGM8742
APPLICATION INFORMATION
Application Circuits
Layout and Bypassing
VDD = 3.3V
Good power supply decoupling, layout and grounding
are very important for SGM8742 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
provide good power supply decoupling. This ceramic
capacitor must be placed as close to +VS pin as
possible.
½
SGM8742
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. SGM8742
must be soldered directly to the PCB and the socket is
not recommended.
VS = 3V
Coax Line
10kΩ
+
Clean
Digital
Signal
½
SGM8742
20kΩ
_
VS = 3V
3V
0
20kΩ
Figure 4. The Application of Line Receiver
SG Micro Corp
www.sg-micro.com
AUGUST 2022
8
45ns, 3V/5V, Single-Supply, Low Power,
Rail-to-Rail I/O Comparator
SGM8742
REVISION HISTORY
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
AUGUST 2022 ‒ REV.A to REV.A.1
Page
Updated Absolute Maximum Ratings section.......................................................................................................................................................2
Changes from Original (APRIL 2015) to REV.A
Page
Changed from product preview to production data.............................................................................................................................................All
SG Micro Corp
www.sg-micro.com
AUGUST 2022
9
PACKAGE INFORMATION
PACKAGE OUTLINE DIMENSIONS
SOIC-8
0.6
D
e
2.2
E1
E
5.2
b
1.27
RECOMMENDED LAND PATTERN (Unit: mm)
L
A
A1
c
θ
A2
Dimensions
In Millimeters
Dimensions
In Inches
Symbol
MIN
MAX
1.750
0.250
1.550
0.510
0.250
5.100
4.000
6.200
MIN
MAX
0.069
0.010
0.061
0.020
0.010
0.200
0.157
0.244
A
A1
A2
b
1.350
0.100
1.350
0.330
0.170
4.700
3.800
5.800
0.053
0.004
0.053
0.013
0.006
0.185
0.150
0.228
c
D
E
E1
e
1.27 BSC
0.050 BSC
L
0.400
0°
1.270
8°
0.016
0°
0.050
8°
θ
NOTES:
1. Body dimensions do not include mode flash or protrusion.
2. This drawing is subject to change without notice.
SG Micro Corp
TX00010.000
www.sg-micro.com
PACKAGE INFORMATION
PACKAGE OUTLINE DIMENSIONS
MSOP-8
b
E1
E
4.8
1.02
e
0.41
0.65
RECOMMENDED LAND PATTERN (Unit: mm)
D
L
A
c
A1
θ
A2
Dimensions
In Millimeters
Dimensions
In Inches
Symbol
MIN
MAX
1.100
0.150
0.950
0.380
0.230
3.100
3.100
5.050
MIN
MAX
0.043
0.006
0.037
0.015
0.009
0.122
0.122
0.199
A
A1
A2
b
0.820
0.020
0.750
0.250
0.090
2.900
2.900
4.750
0.032
0.001
0.030
0.010
0.004
0.114
0.114
0.187
c
D
E
E1
e
0.650 BSC
0.026 BSC
L
0.400
0°
0.800
6°
0.016
0°
0.031
6°
θ
NOTES:
1. Body dimensions do not include mode flash or protrusion.
2. This drawing is subject to change without notice.
SG Micro Corp
TX00014.000
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
SOIC-8
13″
13″
12.4
12.4
6.40
5.20
5.40
3.30
2.10
1.50
4.0
4.0
8.0
8.0
2.0
2.0
12.0
12.0
Q1
Q1
MSOP-8
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
13″
386
280
370
5
SG Micro Corp
www.sg-micro.com
TX20000.000
相关型号：
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