SGM8749 [SGMICRO]
150ns, 3V/5V, Single-Supply, Low Power, Rail-to-Rail Input Comparator;
| 型号： | SGM8749 |
| 厂家： | 
Shengbang Microelectronics Co, Ltd |
| 描述： | 150ns, 3V/5V, Single-Supply, Low Power, Rail-to-Rail Input Comparator |
| 文件： | 总11页 (文件大小：692K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
SGM8749
150ns, 3V/5V, Single-Supply, Low Power,
Rail-to-Rail Input Comparator
GENERAL DESCRIPTION
FEATURES
The SGM8749 is a single, high speed, low power
comparator, which features a fast 150ns propagation
delay. The device is optimized for low voltage operation
on 3V or 5V supply, and consumes only 22μA supply
current.
● Low Propagation Delay: 150ns (Overdrive = 10mV)
● Low Supply Current: 22μA (TYP) at VCC = 3V
● Low Offset Voltage: 0.8mV (TYP)
● Rail-to-Rail Input
● Supply Voltage Range: 2.7V to 5.5V
● Optimized for 3V and 5V Applications
● Open-Drain Output
The SGM8749 supports rail-to-rail input operation. The
input common mode voltage range is from -0.1V to VCC
+ 0.1V. The device has an open-drain output structure
that needs external pull-up resistor. Any input or output
pin has a continuous short-circuit protection to both
power supply rails.
● Output Swing with 4mA Output Current: 185mV
(TYP)
● Supports CMOS or TTL Logic
● -40℃ to +85℃ Operating Temperature Range
● Available in Green SOT-23-5 and SC70-5 Packages
The SGM8749 is available in Green SOT-23-5 and
SC70-5 packages. It is rated over the -40℃ to +85℃
temperature range.
APPLICATIONS
3V or 5V Applications
Portable/Battery-Powered Equipment
Mobile Phones
Zero-Crossing Detectors
Threshold Detectors
Line Receiver Units
SG Micro Corp
AUGUST 2021 – REV. A. 1
www.sg-micro.com
150ns, 3V/5V, Single-Supply, Low Power,
Rail-to-Rail Input Comparator
SGM8749
PACKAGE/ORDERING INFORMATION
SPECIFIED
TEMPERATURE
RANGE
PACKAGE
DESCRIPTION
ORDERING
NUMBER
PACKAGE
MARKING
PACKING
OPTION
MODEL
SC70-5
SGM8749YC5G/TR
SGM8749YN5G/TR
SS1XX
SS2XX
Tape and Reel, 3000
Tape and Reel, 3000
-40℃ to +85℃
-40℃ to +85℃
SGM8749
SOT-23-5
MARKING INFORMATION
NOTE: XX = Date Code.
YYY X X
Date Code - Month
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, VCC to GND..............................................6V
Differential Input Voltage, VIN............................±(VCC - GND)
Voltage at Input/Output Pins................. -0.3V to (VCC + 0.3V)
Junction Temperature.................................................+150℃
Storage Temperature Range.......................-65℃ to +150℃
Lead Temperature (Soldering, 10s)............................+260℃
ESD Susceptibility
DISCLAIMER
HBM.............................................................................2000V
MM.................................................................................400V
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 +85℃
Operating Supply Voltage Range .......................2.7V to 5.5V
PIN CONFIGURATIONS
(TOP VIEW)
OVERSTRESS CAUTION
+IN
1
2
5
4
VCC
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.
GND
-IN
3
OUT
SOT-23-5/SC70-5
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.
SG Micro Corp
AUGUST 2021
www.sg-micro.com
2
150ns, 3V/5V, Single-Supply, Low Power,
Rail-to-Rail Input Comparator
SGM8749
ELECTRICAL CHARACTERISTICS
(VCC = 5V, 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 Range (1)
Input Common Mode Voltage Range (2)
VCC
2.7
V
V
VCM
-0.1
VCC + 0.1
4.5
VCC = 5V, VCM = 0V, Out = 0V
-40℃ to +85℃
0.8
0.9
-33
77
4.7
Input Offset Voltage
VOS
mV
VCC = 5V, VCM = 5V, Out = 0V
-40℃ to +85℃
4.8
4.9
VCC = 5V, Out to VCC/2
-40℃ to +85℃
-28
Output Short-Circuit Current
Common Mode Rejection Ratio (3)
Power Supply Rejection Ratio
Output Voltage Swing from Rail
ISINK
CMRR
PSRR
VOL
mA
dB
-22
VCC = 5V, VCM = 0V to 5V
-40℃ to +85℃
60
58
68
66
VCM = 0V, VCC = 2.7V to 5.5V
-40℃ to +85℃
79
dB
VCC = 5V, IOUT = -4mA
-40℃ to +85℃
185
22
218
262
32
mV
VCC = 3V, VOUT = L, IOUT = 0mA
-40℃ to +85℃
38
Supply Current
IS
µA
VCC = 5V, VOUT = L, IOUT = 0mA
-40℃ to +85℃
25
35
44
VCC = 3V, Overdrive = 10mV
VCC = 3V, Overdrive = 100mV
Overdrive = 10mV
150
97
8
Propagation Delay (High to Low)
Fall Time
ns
ns
tFALL
Overdrive = 100mV
6
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 VCC
+ 0.1V without any damage to SGM8749.
3. CMRR is defined over the condition of whole input common mode range.
SG Micro Corp
www.sg-micro.com
AUGUST 2021
3
150ns, 3V/5V, Single-Supply, Low Power,
Rail-to-Rail Input Comparator
SGM8749
TYPICAL PERFORMANCE CHARACTERISTICS
Supply Current vs. Temperature
Output Low Voltage vs. Temperature
50
40
30
20
10
0
300
250
200
150
100
50
VCC = 3V
VCC = 5V
VCC = 5V
VCC = 3V
ISINK = 4mA
-50 -25
0
25
50
75
100
-50
-25
0
25
50
75
100
Temperature (℃)
Temperature (℃)
Propagation Delay vs. Input Overdrive
Propagation Delay vs. Capacitive Load
VCC = 3V, VCM = 0V
180
140
130
120
110
100
90
VCC = 3V, VCM = 0V
RL = 10kΩ, CL = 18pF
RL = 10kΩ, VOD = 100mV
160
140
120
100
80
H-L
H-L
80
0
30
60
90
120
150
180
0
40
80
120
160
200
Input Overdrive (mV)
Capacitive Load (pF)
Propagation Delay (H-L)
Propagation Delay (H-L)
VOD = 100mV, VCM = 0V
VOD = 10mV, VCM = 0V
VIN
VIN
0V
0V
VOUT
VOUT
0V
0V
Time (25ns/div)
Time (50ns/div)
SG Micro Corp
www.sg-micro.com
AUGUST 2021
4
150ns, 3V/5V, Single-Supply, Low Power,
Rail-to-Rail Input Comparator
SGM8749
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
Output Short-Circuit (Sink) Current vs. Temperature
Offset Voltage Production Distribution
0
-10
-20
-30
-40
-50
35
30
25
20
15
10
5
VCC = 5V
CM = 0V
5900 Samples
1 Production Lot
V
VCC = 3V
VCC = 5V
0
-50
-25
0
25
50
75
100
Temperature (℃)
Offset Voltage (mV)
Offset Voltage Production Distribution
35
30
25
20
15
10
5
VCC = 5V
CM = 5V
5900 Samples
1 Production Lot
V
0
Offset Voltage (mV)
SG Micro Corp
AUGUST 2021
www.sg-micro.com
5
150ns, 3V/5V, Single-Supply, Low Power,
Rail-to-Rail Input Comparator
SGM8749
DETAILED DESCRIPTION
The SGM8749 is a single, high speed, low power
comparator optimized for low voltage operation from
2.7V to 5.5V single supply. The device supports
rail-to-rail input operation. It is suitable for portable
equipment. Open-drain structure needs external pull-up
resistor. The SGM8749 can be compatible with CMOS
and TTL logics.
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.
VCC
Output Structure
In Figure 1, the SGM8749 has an open-drain output
stage. When output is changed from logic high to low,
the changed sink current pulls output pin to logic low.
Beginning this transition, larger sink current is used to
create a high slew rate transit from high to low. Once
the output voltage reaches VOL, it will reduce the sink
current to a just right value to maintain the VOL static
condition. This current-driven open-drain output stage will
significantly reduce the power consumption in application
system.
4.7kΩ
Output
ISINK
GND
Figure 1. Open-Drain Output Structure
APPLICATION INFORMATION
Application Circuits
Layout and Bypassing
VDD = 3.3V
Good power supply decoupling, layout and grounding
are very important for SGM8749 to realize the full
high-speed capabilities in system, following skills will be
used:
VREF
SDI
VDD
4.7kΩ
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 VCC pin as
possible.
SGM8749
_
GND
VSS
Analog
Input
For grounding, unbroken and low-inductance ground
plane is a good choice.
Figure 2. A Threshold Detector Controlled by 8-Bit DAC
For Layout, use short PCB trace to avoid unwanted
parasitic feedback around the comparator. SGM8749
must be soldered directly to the PCB and the socket is
not recommended.
VCC = 3V
Coax Line
10kΩ
4.7kΩ
Clean
+
Digital
Signal
SGM8749
_
20kΩ
V
CC = 3V
3V
0
20kΩ
Figure 3. The Application of Line Receiver
SG Micro Corp
www.sg-micro.com
AUGUST 2021
6
150ns, 3V/5V, Single-Supply, Low Power,
Rail-to-Rail Input Comparator
SGM8749
REVISION HISTORY
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
AUGUST 2021 ‒ REV.A to REV.A.1
Page
Updated General Description section...................................................................................................................................................................1
Updated Pin Configurations section.....................................................................................................................................................................2
Updated Electrical Characteristics section...........................................................................................................................................................3
Updated Detailed Description section..................................................................................................................................................................6
Changes from Original (JUNE 2015) to REV.A
Changed from product preview to production data.............................................................................................................................................All
SG Micro Corp
www.sg-micro.com
AUGUST 2021
7
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
0.150
2.200
1.350
2.450
MIN
MAX
A
A1
A2
b
0.900
0.000
0.900
0.150
0.080
2.000
1.150
2.150
0.035
0.000
0.035
0.006
0.003
0.079
0.045
0.085
0.043
0.004
0.039
0.014
0.006
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
TX00043.000
www.sg-micro.com
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
A
A1
c
θ
0.2
A2
Dimensions
In Millimeters
Dimensions
In Inches
Symbol
MIN
MAX
1.250
0.100
1.150
0.500
0.200
3.020
1.700
2.950
MIN
MAX
0.049
0.004
0.045
0.020
0.008
0.119
0.067
0.116
A
A1
A2
b
1.050
0.000
1.050
0.300
0.100
2.820
1.500
2.650
0.041
0.000
0.041
0.012
0.004
0.111
0.059
0.104
c
D
E
E1
e
0.950 BSC
1.900 BSC
0.037 BSC
0.075 BSC
e1
L
0.300
0°
0.600
8°
0.012
0°
0.024
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
TX00033.000
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
SC70-5
7″
7″
9.5
9.5
2.25
3.20
2.55
3.20
1.20
1.40
4.0
4.0
4.0
4.0
2.0
2.0
8.0
8.0
Q3
Q3
SOT-23-5
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
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