SGM8249-1/SGM8249-2
8MHz, High Voltage, High Precision, Low Noise,
Rail-to-Rail Output Operational Amplifiers
GENERAL DESCRIPTION
FEATURES
The single SGM8249-1 and dual SGM8249-2 are high
● Low Offset Voltage: 10μV (MAX)
voltage, low noise and high precision operational
● Open-Loop Voltage Gain: 150dB (TYP)
amplifiers which can operate from 4.5V to 36V single
● PSRR: 150dB (TYP)
supply or from ±2.25V to ±18V dual supplies. These
● CMRR: 140dB (TYP)
devices provide rail-to-rail output operation.
● Input Voltage Noise Density: 10nV/√Hz at 1kHz
The SGM8249-1/2 offer a low offset voltage less than
10μV and a low bias current. The combination of
characteristics makes the SGM8249-1/2 good choices
for temperature measurements, pressure and position
sensors,
strain
gauge
amplifiers
and
medical
instrumentation, or any other 4.5V to 36V applications
requiring precision and long-term stability.
The SGM8249-1 is available in Green SOT-23-5 and
SOIC-8 packages. The SGM8249-2 is available in a
Green SOIC-8 package. The SGM8249-1/2 are rated
over the -40℃ to +125℃ temperature range.
● Gain-Bandwidth Product: 8MHz
● Overload Recovery Time: 0.7μs
● Rail-to-Rail Output Swing
● Support Single or Dual Power Supplies:
4.5V to 36V or ±2.25V to ±18V
● Low Supply Current: 0.85mA/Amplifier (TYP)
● -40℃ to +125℃ Operating Temperature Range
● Small Packaging:
SGM8249-1 Available in Green SOT-23-5 and
SOIC-8 Packages
SGM8249-2 Available in a Green SOIC-8 Package
APPLICATIONS
Pressure Sensors
Temperature Measurements
Precision Current Sensing
Electronic Scales
Strain Gauge Amplifiers
Handheld Test Equipment
Thermocouple Amplifiers
Medical Instrumentation
SG Micro Corp
www.sg-micro.com
OCTOBER 2022 - REV. A. 2
SGM8249-1
SGM8249-2
8MHz, High Voltage, High Precision, Low Noise,
Rail-to-Rail Output Operational Amplifiers
PACKAGE/ORDERING INFORMATION
MODEL
PACKAGE
DESCRIPTION
SPECIFIED
TEMPERATURE
RANGE
ORDERING
NUMBER
PACKAGE
MARKING
PACKING
OPTION
SOT-23-5
-40℃ to +125℃
SGM8249-1XN5G/TR
GM7XX
Tape and Reel, 3000
SOIC-8
-40℃ to +125℃
SGM8249-1XS8G/TR
SOIC-8
-40℃ to +125℃
SGM8249-2XS8G/TR
SGM8249-1
SGM8249-2
SGM
82491XS8
XXXXX
SGM
82492XS8
XXXXX
Tape and Reel, 4000
Tape and Reel, 4000
MARKING INFORMATION
NOTE: XX = Date Code. XXXXX = Date Code and Vendor Code.
SOT-23-5
SOIC-8
XXXXX
YYY X X
Date Code - Week
Date Code - Year
Serial Number
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
Supply Voltage ................................................................. 40V
Input Voltage Range ................................ -VS to (+VS) + 0.1V
Differential Input Voltage Range ............................. -1V to 1V
Junction Temperature .................................................+150℃
Storage Temperature Range......................... -65℃ to +150℃
Lead Temperature (Soldering, 10s) ............................+260℃
ESD Susceptibility
HBM ............................................................................. 6000V
CDM ............................................................................ 1000V
RECOMMENDED OPERATING CONDITIONS
Operating Voltage Range.....................................4.5V to 36V
Operating Temperature Range ..................... -40℃ to +125℃
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.
Failure to observe proper handling and installation procedures
can cause damage. ESD damage can range from subtle
performance degradation to complete 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.
DISCLAIMER
SG Micro Corp reserves the right to make any change in
circuit design, or specifications without prior notice.
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.
SG Micro Corp
www.sg-micro.com
OCTOBER 2022
2
SGM8249-1
SGM8249-2
8MHz, High Voltage, High Precision, Low Noise,
Rail-to-Rail Output Operational Amplifiers
PIN CONFIGURATIONS
SGM8249-1 (TOP VIEW)
OUT
-VS
1
5
2
+
+IN
SGM8249-1 (TOP VIEW)
+VS
_
3
4
-IN
NC
1
-IN
2
+IN
3
-VS
4
8
NC
_
7
+VS
+
6
OUT
5
NC
NC = NO CONNECT
SOT-23-5
SOIC-8
SGM8249-2 (TOP VIEW)
OUTA
1
-INA
2
_
+INA
3
+
-VS
4
8
+VS
7
OUTB
_
6
-INB
+
5
+INB
SOIC-8
SG Micro Corp
www.sg-micro.com
OCTOBER 2022
3
SGM8249-1
SGM8249-2
8MHz, High Voltage, High Precision, Low Noise,
Rail-to-Rail Output Operational Amplifiers
ELECTRICAL CHARACTERISTICS
(At TA = +25℃, VS = ±2.25V to ±18V, VCM = 0V and RL = 5kΩ connected to 0V, Full = -40℃ to +125℃, unless otherwise noted.)
PARAMETER
SYMBOL
CONDITIONS
TEMP
MIN
TYP
MAX
2
10
UNITS
Input Characteristics
Input Offset Voltage
Input Offset Voltage Drift
+25℃
VOS
Full
15
μV
ΔVOS/ΔT
Full
12
Input Bias Current
IB
+25℃
±100
±400
pA
Input Offset Current
IOS
+25℃
±200
±600
pA
Input Common Mode Voltage Range
VCM
Full
(-VS)
(+VS) - 1.5
V
+25℃
118
Full
115
+25℃
120
Full
117
+25℃
128
Full
125
Common Mode Rejection Ratio
CMRR
VCM = (-VS) to (+VS) - 1.5V
VS = ±2.25V, VOUT = ±2.0V
Open-Loop Voltage Gain
AOL
VS = ±18V, VOUT = ±17.5V
nV/℃
140
dB
150
dB
155
Output Characteristics
VS = ±2.25V
Output Voltage Swing from Rail
VS = ±18V
VS = ±2.25V
Output Short-Circuit Current
ISC
VS = ±18V
+25℃
22
32
170
240
Full
35
+25℃
Full
+25℃
mV
285
±25
Full
±14
+25℃
±60
Full
±44
Full
4.5
±35
mA
±70
Power Supply
Operating Voltage Range
VS
Quiescent Current/Amplifier
IQ
Power Supply Rejection Ratio
PSRR
IOUT = 0A
VS = 4.5V to 36V
36
0.85
+25℃
Full
1.2
1.3
+25℃
128
Full
125
150
V
mA
dB
Dynamic Performance
Gain-Bandwidth Product
Slew Rate
Settling Time to 0.1%
GBP
SR
tS
Overload Recovery Time
Total Harmonic Distortion + Noise
VOUT = 100mVP-P, CL = 10pF
THD+N
+25℃
8
MHz
+25℃
6
V/μs
VIN = 1V step, AV = +1
+25℃
0.8
μs
VIN × AV > VS
+25℃
0.7
μs
VIN = 2VP-P, AV = +1, f = 1kHz
+25℃
0.0002
%
f = 0.1Hz to 10Hz
+25℃
0.2
μVP-P
f = 0.1kHz
+25℃
10
f = 1kHz
+25℃
10
f = 10kHz
+25℃
11
Noise
Input Voltage Noise
Input Voltage Noise Density
SG Micro Corp
www.sg-micro.com
en
nV/
HZ
OCTOBER 2022
4
SGM8249-1
SGM8249-2
8MHz, High Voltage, High Precision, Low Noise,
Rail-to-Rail Output Operational Amplifiers
TYPICAL PERFORMANCE CHARACTERISTICS
At TA = +25℃, VS = ±15V, CL = 10pF and RL = 5kΩ, unless otherwise noted.
Quiescent Current vs. Temperature
Quiescent Current vs. Supply Voltage
870
Quiescent Current/Amplifier (μA)
Quiescent Current/Amplifier (μA)
950
900
850
800
750
700
-50
-25
0
25
50
75
100
860
850
840
830
820
125
0
6
12
Output Short-Circuit Current vs. Supply Voltage
Input Offset Voltage (mV)
Output Short-Circuit Current (mA)
ISOURCE
30
0
-30
ISINK
-60
-90
0
6
12
18
24
24
30
36
Input Offset Voltage vs. Input Common Mode Voltage
1.5
90
60
18
Supply Voltage (V)
Temperature (℃)
30
36
1
0.5
0
-0.5
-1
-1.5
-6
0
6
12
18
24
30
Supply Voltage (V)
Input Common Mode Voltage (V)
Output Voltage vs. Output Current
0.1Hz to 10Hz Input Voltage Noise
36
20
10
Noise (50nV/div)
Output Voltage (V)
15
5
0
-5
-10
-15
-20
0
20
40
60
Output Current (mA)
SG Micro Corp
www.sg-micro.com
80
100
Time (1s/div)
OCTOBER 2022
5
SGM8249-1
SGM8249-2
8MHz, High Voltage, High Precision, Low Noise,
Rail-to-Rail Output Operational Amplifiers
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
At TA = +25℃, VS = ±15V, CL = 10pF and RL = 5kΩ, unless otherwise noted.
0
80
Open-Loop Gain (dB)
Input Voltage Noise Density (nV/√Hz)
Open-Loop Gain and Phase vs. Frequency
100
10
-30
Phase
60
40
-90
20
0
1
10
100
1000
10000
-20
100000
-150
1
10
100
CMRR vs. Frequency
PSRR vs. Frequency
Power Supply Rejection Ratio (dB)
0
-30
-60
-90
-120
-150
-180
10000
1000
Frequency (kHz)
0
Common Mode Rejection Ratio (dB)
-120
Open-Loop Gain
Frequency (Hz)
-30
-60
-PSRR
-90
+PSRR
-120
0.01
0.1
1
10
100
1000
10000
-150
0.01
0.1
1
Frequency (kHz)
-70
10
100
1000
10000
Frequency (kHz)
THD+N vs. Frequency
-60
THD+N vs. Output Amplitude
-40
AV = +1,
VIN = 2VP-P
AV = +1,
f = 1kHz
-60
-80
THD+N (dB)
THD+N (dB)
-60
Phase (degree)
Input Voltage Noise Density vs. Frequency
100
-90
-80
-100
-100
-120
-110
-120
10
100
1000
Frequency (Hz)
SG Micro Corp
www.sg-micro.com
10000
100000
-140
0.001
0.01
0.1
1
10
Output Amplitude (VRMS)
OCTOBER 2022
6
SGM8249-1
SGM8249-2
8MHz, High Voltage, High Precision, Low Noise,
Rail-to-Rail Output Operational Amplifiers
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
At TA = +25℃, VS = ±15V, CL = 10pF and RL = 5kΩ, unless otherwise noted.
EMIRR IN+ vs. Frequency
120
Channel Separation vs. Frequency
-20
PRF = -10dBm
Channel Separation (dB)
EMIRR IN+ (dB)
100
80
60
40
20
0
10
100
1000
-40
-60
-80
-100
-120
-140
10000
0.1
1
1
-0.5
-1
0
-0.5
-1.5
Time (100ns/div)
Positive Settling Time
Negative Settling Time
0.15
— VIN
— VOUT
Input and Output Voltage (V)
Input and Output Voltage (V)
10000 100000
0.5
Time (100ns/div)
0.15
1000
-1
-1.5
0.2
100
Slew Rate (down)
1.5
Output Voltage (V)
Output Voltage (V)
Slew Rate (up)
1.5
0
10
Frequency (kHz)
Frequency (MHz)
0.5
1
0.1
0.05
0
-0.05
-0.1
-0.15
-0.2
— VIN
— VOUT
0.1
0.05
0
-0.05
-0.1
-0.15
-0.2
-0.25
Time (500ns/div)
SG Micro Corp
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Time (500ns/div)
OCTOBER 2022
7
SGM8249-1
SGM8249-2
8MHz, High Voltage, High Precision, Low Noise,
Rail-to-Rail Output Operational Amplifiers
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
At TA = +25℃, VS = ±15V, CL = 10pF and RL = 5kΩ, unless otherwise noted.
Large-Signal Step Response
No Phase Reversal
20
Output Voltage (5V/div)
Input and Output Voltage (V)
AV = +1, f = 2.5kHz, VOUT = 20VP-P
15
— VIN
— VOUT
10
5
0
-5
-10
-15
-20
Time (50μs/div)
Time (100μs/div)
Input Offset Voltage Production Distribution
0.92
0.90
0.88
0.86
0.84
0.82
0
0.80
Inout Offset Voltage (μV)
5
0.78
5.5
4.5
3.5
2.5
1.5
0.5
-0.5
-1.5
-2.5
-3.5
0
-4.5
3
10
0.76
6
15
0.74
9
3240 Samples
1 Production Lot
0.72
Percentage of Amplifiers (%)
12
Quiescent Current Production Distribution
20
3240 Samples
1 Production Lot
-5.5
Percentage of Amplifiers (%)
15
Quiescent Current (mA)
Input Offset Voltage Drift Distribution
Percentage of Amplifiers (%)
20
-40℃ ≤ TA ≤ +125℃
16
12
8
4
0
0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30
Input Offset Voltage Drift (nV/℃)
SG Micro Corp
www.sg-micro.com
OCTOBER 2022
8
SGM8249-1
SGM8249-2
8MHz, High Voltage, High Precision, Low Noise,
Rail-to-Rail Output Operational Amplifiers
APPLICATION INFORMATION
Rail-to-Rail Output
+VS
The SGM8249-1/2 support rail-to-rail output operation.
In single power supply application, for example, when
+VS = 36V, -VS = GND, 5kΩ load resistor is tied from
OUT pin to ground, the typical output swing range is
from 0.17V to 35.83V.
VN
_
Driving Capacitive Loads
VP
+
RF
+
0.1μF
VN
_
VP
+
VOUT
10μF
-VS (GND)
0.1μF
-VS
Grounding
RISO
VOUT
CL
Figure 1. Circuit to Drive Heavy Capacitive Load
Power Supply Decoupling and Layout
A clean and low noise power supply is very important in
amplifier circuit design, besides of input signal noise,
the power supply is one of important source of noise to
the amplifiers through +VS and -VS pins. Power supply
bypassing is an effective method to clear up the noise
at power supply, and the low impedance path to ground
of decoupling capacitor will bypass the noise to GND.
In application, 10μF ceramic capacitor paralleled with
0.1μF or 0.01μF ceramic capacitor is used in Figure 2.
The ceramic capacitors should be placed as close as
possible to +VS and -VS power supply pins.
SG Micro Corp
www.sg-micro.com
0.1μF
Figure 2. Amplifier Power Supply Bypassing
CF
VIN
10μF
VOUT
The SGM8249-1/2 are unity-gain stable with heavy
capacitive load. If greater capacitive load must be
driven in application, the circuit in Figure 1 can be used.
In this circuit, the IR drop voltage generated by RISO is
compensated by feedback loop.
_
+VS
10μF
In low speed application, one node grounding technique
is the simplest and most effective method to eliminate
the noise generated by grounding. In high speed
application, the general method to eliminate noise is to
use a complete ground plane technique, and the whole
ground plane will help distribute heat and reduce EMI
noise pickup.
Reduce Input-to-Output Coupling
To reduce the input-to-output coupling, the input traces
must be placed as far away from the power supply or
output traces as possible. The sensitive trace must not
be placed in parallel with the noisy trace in same layer.
They must be placed perpendicularly in different layers
to reduce the crosstalk. These PCB layout techniques
will help to reduce unwanted positive feedback and
noise.
OCTOBER 2022
9
SGM8249-1
SGM8249-2
8MHz, High Voltage, High Precision, Low Noise,
Rail-to-Rail Output Operational Amplifiers
APPLICATION INFORMATION (continued)
Typical Application Circuits
Difference Amplifier
The circuit in Figure 3 is a design example of classical
difference amplifier. If R4/R3 = R2/R1, then VOUT = (VP VN) × R2/R1 + VREF.
R2
VN
VP
R1
_
C
VOUT
R3
R2
+
VIN
R4
_
+
Figure 3. Difference Amplifier
R3 = R1 // R2
High Input Impedance Difference Amplifier
The circuit in Figure 4 is a design example of high input
impedance difference amplifier, the added amplifiers at
the input are used to increase the input impedance and
eliminate drawback of low input impedance in Figure 3.
_
R1
VOUT
VREF
VN
Active Low-Pass Filter
The circuit in Figure 5 is a design example of active
low-pass filter, the DC gain is equal to -R2/R1 and the
-3dB corner frequency is equal to 1/2πR2C. In this design,
the filter bandwidth must be less than the bandwidth of
the amplifier, the resistor values must be selected as
low as possible to reduce ringing or oscillation generated
by the parasitic parameters in PCB layout.
R1
Figure 5. Active Low-Pass Filter
R2
+
_
VOUT
VP
+
+
R3
_
R4
VREF
Figure 4. High Input Impedance Difference Amplifier
SG Micro Corp
www.sg-micro.com
OCTOBER 2022
10
SGM8249-1
SGM8249-2
8MHz, High Voltage, High Precision, Low Noise,
Rail-to-Rail Output Operational Amplifiers
REVISION HISTORY
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
OCTOBER 2022 ‒ REV.A.1 to REV.A.2
Page
Updated Typical Performance Characteristics section ......................................................................................................................................... 6
OCTOBER 2019 ‒ REV.A to REV.A.1
Page
Updated Marking Information section................................................................................................................................................................... 2
Changes from Original (DECEMBER 2017) to REV.A
Page
Changed from product preview to production data ............................................................................................................................................. All
SG Micro Corp
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OCTOBER 2022
11
PACKAGE INFORMATION
PACKAGE OUTLINE DIMENSIONS
SOT-23-5
1.90
D
e1
E1
2.59
E
0.99
b
e
0.69
0.95
RECOMMENDED LAND PATTERN (Unit: mm)
L
A
A1
θ
A2
Symbol
Dimensions
In Millimeters
MIN
MAX
c
0.2
Dimensions
In Inches
MIN
MAX
A
1.050
1.250
0.041
0.049
A1
0.000
0.100
0.000
0.004
A2
1.050
1.150
0.041
0.045
b
0.300
0.500
0.012
0.020
c
0.100
0.200
0.004
0.008
D
2.820
3.020
0.111
0.119
E
1.500
1.700
0.059
0.067
E1
2.650
2.950
0.104
0.116
e
0.950 BSC
0.037 BSC
e1
1.900 BSC
0.075 BSC
L
0.300
0.600
0.012
0.024
θ
0°
8°
0°
8°
NOTES:
1. Body dimensions do not include mode flash or protrusion.
2. This drawing is subject to change without notice.
SG Micro Corp
www.sg-micro.com
TX00033.000
PACKAGE INFORMATION
PACKAGE OUTLINE DIMENSIONS
SOIC-8
0.6
D
e
2.2
E
E1
5.2
b
1.27
RECOMMENDED LAND PATTERN (Unit: mm)
L
A
θ
A1
c
A2
Symbol
Dimensions
In Millimeters
MIN
MAX
Dimensions
In Inches
MIN
MAX
A
1.350
1.750
0.053
0.069
A1
0.100
0.250
0.004
0.010
A2
1.350
1.550
0.053
0.061
b
0.330
0.510
0.013
0.020
c
0.170
0.250
0.006
0.010
D
4.700
5.100
0.185
0.200
E
3.800
4.000
0.150
0.157
E1
5.800
6.200
0.228
0.244
e
1.27 BSC
0.050 BSC
L
0.400
1.270
0.016
0.050
θ
0°
8°
0°
8°
NOTES:
1. Body dimensions do not include mode flash or protrusion.
2. This drawing is subject to change without notice.
SG Micro Corp
www.sg-micro.com
TX00010.000
PACKAGE INFORMATION
TAPE AND REEL INFORMATION
REEL DIMENSIONS
TAPE DIMENSIONS
P2
W
P0
Q1
Q2
Q1
Q2
Q1
Q2
Q3
Q4
Q3
Q4
Q3
Q4
B0
Reel Diameter
A0
P1
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
Diameter
Reel Width
W1
(mm)
A0
(mm)
B0
(mm)
K0
(mm)
P0
(mm)
P1
(mm)
P2
(mm)
W
(mm)
Pin1
Quadrant
SOT-23-5
7″
9.5
3.20
3.20
1.40
4.0
4.0
2.0
8.0
Q3
SOIC-8
13″
12.4
6.40
5.40
2.10
4.0
8.0
2.0
12.0
Q1
SG Micro Corp
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TX10000.000
DD0001
Package Type
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)
Pizza/Carton
7″ (Option)
368
227
224
8
7″
442
410
224
18
13″
386
280
370
5
SG Micro Corp
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DD0002
Reel Type
TX20000.000
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