SGM8250-1/SGM8250-2
High Voltage, Micro-Power, Zero-Drift,
CMOS Operational Amplifiers
GENERAL DESCRIPTION
FEATURES
The single SGM8250-1 and dual SGM8250-2 CMOS
Low Offset Voltage: 50μV (MAX)
operational amplifiers provide very low offset voltage
Low 0.1Hz to 10Hz Noise: 0.85μVP-P
and zero-drift over time and temperature.
Quiescent Current: 50μA/Amplifier (TYP)
The miniature, high precision, low quiescent current
Single or Dual Supply Operation
amplifiers offer high-impedance inputs that have a wide
Supply Voltage Range: 3V to 24V
input common mode range of 100mV beyond the rails
Rail-to-Rail Input and Output
and rail-to-rail output that swings within 65mV of the
-40℃ to +125℃ Operating Temperature Range
rails. Single or dual supplies as low as 3V (±1.5V) and
Small Packaging:
up to 24V (±12V) may be used. They are optimized for
wide power supply range operation.
The single SGM8250-1 is available in Green SOT-23-5,
SC70-5 and SOIC-8 packages. The dual SGM8250-2 is
available in Green TDFN-3×3-8L and SOIC-8 packages.
They are specified over -40℃ to +125℃ temperature
range.
SGM8250-1 Available in Green SOT-23-5, SC70-5
and SOIC-8 Packages
SGM8250-2 Available in Green TDFN-3×3-8L and
SOIC-8 Packages
APPLICATIONS
Transducer Applications
Temperature Measurements
Electronic Scales
Medical Instrumentation
Battery-Powered Instruments
Handheld Test Equipment
SG Micro Corp
www.sg-micro.com
DECEMBER 2017 - REV. A
SGM8250-1
SGM8250-2
High Voltage, Micro-Power, Zero-Drift,
CMOS Operational Amplifiers
PACKAGE/ORDERING INFORMATION
MODEL
SGM8250-1
PACKAGE
DESCRIPTION
SPECIFIED
TEMPERATURE
RANGE
ORDERING
NUMBER
PACKAGE
MARKING
PACKING
OPTION
SOT-23-5
-40℃ to +125℃
SGM8250-1XN5G/TR
GSCXX
Tape and Reel, 3000
SC70-5
-40℃ to +125℃
SGM8250-1XC5G/TR
GS3XX
Tape and Reel, 3000
SOIC-8
-40℃ to +125℃
SGM8250-1XS8G/TR
TDFN-3×3-8L
-40℃ to +125℃
SGM8250-2XTDB8G/TR
SOIC-8
-40℃ to +125℃
SGM8250-2XS8G/TR
SGM8250-2
SGM
82501XS8
XXXXX
SGM
82502DB
XXXXX
SGM
82502XS8
XXXXX
Tape and Reel, 4000
Tape and Reel, 4000
Tape and Reel, 4000
MARKING INFORMATION
NOTE: XX = Date Code. XXXXX = Date Code and Vendor Code.
SOT-23-5/SC70-5
SOIC-8/TDFN-3×3-8L
XXXXX
YYY X X
Date Code - Month
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 .............................................................. 26.4V
Input Common Mode Voltage Range
.................................................... (-VS) - 0.3V to (+VS) + 0.3V
Junction Temperature .................................................+150℃
Storage Temperature Range ........................ -65℃ to +150℃
Lead Temperature (Soldering, 10s) ............................+260℃
ESD Susceptibility
HBM ............................................................................. 8000V
MM ................................................................................. 250V
CDM ............................................................................ 1000V
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.
ESD SENSITIVITY CAUTION
Specified Voltage Range ........................................3V to 24V
Operating Temperature Range .................... -40℃ to +125℃
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.
OVERSTRESS CAUTION
DISCLAIMER
RECOMMENDED OPERATING CONDITIONS
Stresses beyond those listed in Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to
SG Micro Corp
www.sg-micro.com
SG Micro Corp reserves the right to make any change in
circuit design, or specifications without prior notice.
DECEMBER 2017
2
SGM8250-1
SGM8250-2
High Voltage, Micro-Power, Zero-Drift,
CMOS Operational Amplifiers
PIN CONFIGURATIONS
SGM8250-1 (TOP VIEW)
1
-VS
2
5
+VS
+IN
1
-VS
2
-IN
3
5
+VS
4
OUT
+
OUT
SGM8250-1 (TOP VIEW)
+IN
1
-IN
2
+IN
3
-VS
4
4
3
-IN
SOT-23-5
SC70-5
SGM8250-1 (TOP VIEW)
SGM8250-2 (TOP VIEW)
8
NC
OUTA
1
_
7
+VS
-INA
2
+
NC
_
_
+
6
OUT
+INA
3
5
NC
-VS
4
NC = NO CONNECT
SOIC-8
_
+
+
_
8
+VS
7
OUTB
6
-INB
5
+INB
SOIC-8
SGM8250-2 (TOP VIEW)
OUTA
1
-INA
2
+INA
3
-VS
4
-VS
8
+VS
7
OUTB
6
-INB
5
+INB
TDFN-3×3-8L
SG Micro Corp
www.sg-micro.com
DECEMBER 2017
3
SGM8250-1
SGM8250-2
High Voltage, Micro-Power, Zero-Drift,
CMOS Operational Amplifiers
ELECTRICAL CHARACTERISTICS
(At TA = +25℃, +VS = 5V, -VS = 0V, VCM = +VS/2, VOUT = +VS/2 and RL = 10kΩ to +VS/2, Full = -40℃ to +125℃, unless otherwise
noted.)
PARAMETER
CONDITIONS
TEMP
MIN
TYP
MAX
10
50
UNITS
Input Characteristics
+25℃
Input Offset Voltage (VOS)
Full
Input Offset Voltage Drift (ΔVOS/ΔT)
Input Bias Current (IB)
Input Common Mode Voltage Range (VCM)
Common Mode Rejection Ratio (CMRR)
(-VS) - 0.1V < VCM < (+VS) + 0.1V
Open-Loop Voltage Gain (AOL)
(-VS) + 0.1V < VOUT < (+VS) - 0.1V
90
μV
Full
0.11
μV/℃
+25℃
60
pA
Full
(-VS) - 0.1
+25℃
95
Full
92
+25℃
108
Full
105
(+VS) + 0.1
112
V
dB
131
dB
Output Characteristics
14
+25℃
VOH
Full
Output Voltage Swing from Rail
30
8
+25℃
VOL
Full
Output Short-Circuit Current (ISC)
25
16
mV
20
±17
+25℃
mA
Power Supply
Operating Voltage Range (VS)
Full
Quiescent Current/Amplifier (IQ)
IOUT = 0
Power Supply Rejection Ratio (PSRR)
VS = 3V to 24V
3
24
45
+25℃
Full
60
80
+25℃
116
Full
113
142
V
μA
dB
Dynamic Performance
Gain-Bandwidth Product (GBP)
G = +100, CL = 100pF
Slew Rate (SR)
G = +1, VOUT = 2VP-P, CL = 100pF
Turn-On Time
+25℃
350
kHz
+25℃
0.1
V/μs
+25℃
0.75
ms
Noise
Input Voltage Noise
f = 0.1Hz to 10Hz
+25℃
0.85
μVP-P
Input Voltage Noise Density (en)
f = 1kHz
+25℃
40
nV/√Hz
SG Micro Corp
www.sg-micro.com
DECEMBER 2017
4
SGM8250-1
SGM8250-2
High Voltage, Micro-Power, Zero-Drift,
CMOS Operational Amplifiers
ELECTRICAL CHARACTERISTICS (continued)
(At TA = +25℃, +VS = 24V, -VS = 0V, VCM = +VS/2, VOUT = +VS/2 and RL = 10kΩ to +VS/2, Full = -40℃ to +125℃, unless
otherwise noted.)
PARAMETER
CONDITIONS
TEMP
MIN
TYP
MAX
10
50
UNITS
Input Characteristics
+25℃
Input Offset Voltage (VOS)
Full
Input Offset Voltage Drift (ΔVOS/ΔT)
Input Bias Current (IB)
Input Common Mode Voltage Range (VCM)
Common Mode Rejection Ratio (CMRR)
(-VS) - 0.1V < VCM < (+VS) + 0.1V
Open-Loop Voltage Gain (AOL)
(-VS) + 0.1V < VOUT < (+VS) - 0.1V
90
Full
0.11
+25℃
80
Full
(-VS) - 0.1
+25℃
112
Full
107
+25℃
120
Full
110
μV
μV/℃
850
pA
(+VS) + 0.1
V
130
dB
145
dB
Output Characteristics
65
+25℃
VOH
Full
Output Voltage Swing from Rail
37
+25℃
VOL
Full
Output Short-Circuit Current (ISC)
95
130
60
mV
85
±17
+25℃
mA
Power Supply
Operating Voltage Range (VS)
Full
Quiescent Current/Amplifier (IQ)
IOUT = 0
Power Supply Rejection Ratio (PSRR)
VS = 3V to 24V
3
24
50
+25℃
Full
64
84
+25℃
116
Full
113
142
V
μA
dB
Dynamic Performance
Gain-Bandwidth Product (GBP)
G = +100, CL = 100pF
Slew Rate (SR)
G = +1, VOUT = 2VP-P, CL = 100pF
Turn-On Time
+25℃
350
kHz
+25℃
0.09
V/μs
+25℃
1.5
ms
Noise
Input Voltage Noise
f = 0.1Hz to 10Hz
+25℃
0.85
μVP-P
Input Voltage Noise Density (en)
f = 1kHz
+25℃
40
nV/√Hz
SG Micro Corp
www.sg-micro.com
DECEMBER 2017
5
SGM8250-1
SGM8250-2
High Voltage, Micro-Power, Zero-Drift,
CMOS Operational Amplifiers
TYPICAL PERFORMANCE CHARACTERISTICS
At TA = +25℃, +VS = 5V, -VS = 0V, RL = 10kΩ and CL = 0pF, unless otherwise noted.
Quiescent Current vs. Temperature
Small-Signal Overshoot vs. Load Capacitance
50
Small-Signal Overshoot (%)
60
50
40
30
20
-50
-25
0
25
50
75
100
40
30
20
10
0
125
10
100
Common Mode Rejection Ratio vs. Frequency
Power Supply Rejection Ratio vs. Frequency
120
150
120
80
PSRR (dB)
CMRR (dB)
100
60
40
90
60
30
20
0
0.01
0.1
1
10
100
1000
0
0.01
10000
0.1
1
Frequency (kHz)
100
60
Open-Loop Gain (dB)
90
80
60
40
20
Closed-Loop Gain (dB)
SG Micro Corp
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1000
10000
100
0
-30
Open-Loop Gain
30
0
-60
-90
Phase
-30
-120
-60
-90
0
10
100
Open-Loop Gain and Phase vs. Frequency
120
1
10
Frequency (kHz)
Settling Time vs. Closed-Loop Gain
Setting Time (μs)
1000
Load Capacitance (pF)
Temperature (℃)
Phase (degree)
Quiescent Current/Amplifier (μA)
70
-150
0.1
1
10
100
-180
1000
Frequency (kHz)
DECEMBER 2017
6
SGM8250-1
SGM8250-2
High Voltage, Micro-Power, Zero-Drift,
CMOS Operational Amplifiers
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
At TA = +25℃, +VS = 5V, -VS = 0V, RL = 10kΩ and CL = 0pF, unless otherwise noted.
Large-Signal Step Response
Small-Signal Step Response
G = +1, CL = 100pF
Output Voltage (50mV/div)
Output Voltage (500mV/div)
G = +1, CL = 100pF
Time (100μs/div)
Time (100μs/div)
Positive Overload Recovery
Negative Overload Recovery
G = -10, f = 1kHz
G = -10, f = 1kHz
VIN
500mV/div
500mV/div
0V
VIN
0V
0V
1V/div
0V
1V/div
VOUT
VOUT
Time (50μs/div)
Time (50μs/div)
Turn-On Time
0.1Hz to 10Hz Noise
2V/div
VS
0V
200mV/div
VOUT
0V
Time (200μs/div)
SG Micro Corp
www.sg-micro.com
Noise (200nV/div)
G = +1, VIN+ = 0.1V
Time (1s/div)
DECEMBER 2017
7
SGM8250-1
SGM8250-2
High Voltage, Micro-Power, Zero-Drift,
CMOS Operational Amplifiers
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
At TA = +25℃, +VS = 5V, -VS = 0V, RL = 10kΩ and CL = 0pF, unless otherwise noted.
Input Voltage Noise Density vs. Frequency
Offset Voltage Production Distribution
15
Frequency (Hz)
SG Micro Corp
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50
40
0
30
10000
20
1000
10
100
0
10
3
-10
1
6
-20
10
9
-30
100
12
-40
Continues with no 1/f (flicker) noise.
19300 Samples
1 Production Lot
-50
Percentage of Amplifiers (%)
Input Voltage Noise Density (nV/√Hz)
1000
Offset Voltage (μV)
DECEMBER 2017
8
SGM8250-1
SGM8250-2
High Voltage, Micro-Power, Zero-Drift,
CMOS Operational Amplifiers
APPLICATION INFORMATION
The SGM8250-1 and SGM8250-2 are unity-gain stable
and free from unexpected output phase reversal. They
provide low offset voltage and very low drift over time
and temperature. For lowest offset voltage and precision
performance, circuit layout and mechanical conditions
should be optimized. Avoid temperature gradients
that create thermoelectric (Seebeck) effects in the
thermocouple junctions formed from connecting dissimilar
conductors. These thermally-generated potentials can
be made to cancel by ensuring they are equal on both
input terminals. Other layout and design considerations
include:
• Use low thermoelectric-coefficient conditions (avoid
dissimilar metals).
• Thermally isolate components from power supplies or
other heat sources.
• Shield operational amplifier and input circuitry from air
currents, such as cooling fans.
Following these guidelines will reduce the likelihood of
junctions being at different temperatures, which can
cause thermoelectric voltages of 0.11μV/℃ or higher,
depending on materials used.
Operating Voltage
The SGM8250-1 and SGM8250-2 operational amplifiers
operate over a power supply range of 3V to 24V (±1.5V
to ±12V). Supply voltages higher than 26.4V (absolute
maximum) can permanently damage the device.
Input Voltage
The SGM8250-1 and SGM8250-2 input common mode
voltage range extends 0.1V beyond the supply rails.
The SGM8250-1 and SGM8250-2 are designed to
cover the full range without the troublesome transition
region found in some other rail-to-rail amplifiers.
Normally, input bias current is about 80pA; however,
input voltages exceeding the power supplies can cause
excessive current flowing into or out of the input pins.
Internal Offset Correction
The SGM8250-1 and SGM8250-2 operational amplifiers
use an auto-calibration technique to reduce internal
offset. Upon power-up, the amplifier requires approximately
1.5ms to achieve specified VOS accuracy.
General Layout Guidelines
Attention to good layout practices is always
recommended. Keep traces short and, when possible,
use a printed circuit board (PCB) ground plane with
surface-mount components placed as close to the
device pins as possible. Place a 0.1μF capacitor
closely across the supply pins. These guidelines should
be applied throughout the analog circuit to improve
performance and provide benefits such as reducing
the EMI (electromagnetic interference) susceptibility.
Operational amplifiers vary in their susceptibility to
radio frequency interference (RFI). RFI can generally
be identified as a variation in offset voltage or DC signal
levels with changes in the interfering RF signal. The
SGM8250-1 and SGM8250-2 have been specifically
designed to minimize susceptibility to RFI and
demonstrate remarkably low sensitivity. Strong RF
fields may still cause varying offset levels.
Figure 1 shows the basic configuration for a bridge
amplifier.
A low-side current shunt monitor is shown in Figure 2.
RN are operational resistors used to isolate the ADC
2
from the noise of the digital I C bus. Since the ADC is a
16-bit converter, a precision reference is essential for
maximum accuracy. Related application circuits are
shown in Figure 3 ~ 5.
R1
VEX
5V
R R
R R
VOUT
SGM8250-1
R1
VREF
Figure 1. Bridge Amplifier Configuration
SG Micro Corp
www.sg-micro.com
DECEMBER 2017
9
SGM8250-1
SGM8250-2
High Voltage, Micro-Power, Zero-Drift,
CMOS Operational Amplifiers
APPLICATION INFORMATION (continued)
R3
SGM8706's 1.2V
Voltage Reference
R4
0.01µF
Load
R1
SGM8706
VBAT
I/O
SGM8250-1
ILOAD
RSHUNT
R2
R6
CPU
R5
C1
ADC
C2
Figure 2. Low-side Current Shunt Monitor
RG
RSHUNT
Zener (1)
R1 (2)
10kΩ
+VS
MOSFET rated
for up to 50V
SGM8250-1
5V
Dual NMOSFETs
biasing method is
shown. (3)
Load
RBIAS
VOUT
RL
NOTES: (1) Zener rated for operational amplifier supply capability (that is, 24V for SGM8250-1 and SGM8250-2).
(2) Current-limit resistor.
(3) Choose Zener biasing resistor or dual NMOSFETs.
Figure 3. High-side Current Shunt Monitor
SG Micro Corp
www.sg-micro.com
DECEMBER 2017
10
SGM8250-1
SGM8250-2
High Voltage, Micro-Power, Zero-Drift,
CMOS Operational Amplifiers
APPLICATION INFORMATION (continued)
100kΩ
1MΩ
60kΩ
3V
NTC
Thermistor
1MΩ
SGM8250-1
VOUT
Figure 4. Thermistor Measurement
V1
SGM8250-1
R
R
R2
R1
SGM8250-1
VOUT
R2
R
SGM8250-1
V2
R
VOUT = (1 + 2R2/R1) (V2 – V1)
Figure 5. Precision Instrumentation Amplifier Configuration
REVISION HISTORY
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Original (DECEMBER 2017) to REV.A
Page
Changed from product preview to production data ............................................................................................................................................. All
SG Micro Corp
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DECEMBER 2017
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
SG Micro Corp
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L
0.300
0.600
0.012
0.024
θ
0°
8°
0°
8°
TX00033.000
PACKAGE INFORMATION
PACKAGE OUTLINE DIMENSIONS
SC70-5
D
e1
0.65
e
E1
1.9
E
0.75
b
0.4
1.3
RECOMMENDED LAND PATTERN (Unit: mm)
L
L1
A
θ
A1
c
0.20
A2
Symbol
Dimensions
In Millimeters
MIN
MAX
Dimensions
In Inches
MIN
MAX
A
0.900
1.100
0.035
0.043
A1
0.000
0.100
0.000
0.004
A2
0.900
1.000
0.035
0.039
b
0.150
0.350
0.006
0.014
c
0.080
0.150
0.003
0.006
D
2.000
2.200
0.079
0.087
E
1.150
1.350
0.045
0.053
E1
2.150
2.450
0.085
0.096
e
0.65 TYP
0.026 TYP
e1
1.300 BSC
0.051 BSC
L
0.525 REF
0.021 REF
L1
0.260
0.460
0.010
0.018
θ
0°
8°
0°
8°
SG Micro Corp
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TX00043.000
PACKAGE INFORMATION
PACKAGE OUTLINE DIMENSIONS
TDFN-3×3-8L
D
e
N8
D1
k
E
E1
L
N4
N1
b
BOTTOM VIEW
TOP VIEW
2.3
1.5 2.725
A
A1
A2
0.675
SIDE VIEW
0.24
0.65
RECOMMENDED LAND PATTERN (Unit: mm)
Symbol
Dimensions
In Millimeters
MIN
MAX
Dimensions
In Inches
MIN
MAX
A
0.700
0.800
0.028
0.031
A1
0.000
0.050
0.000
0.002
A2
0.203 REF
0.008 REF
D
2.900
3.100
0.114
0.122
D1
2.200
2.400
0.087
0.094
E
2.900
3.100
0.114
0.122
E1
1.400
1.600
0.055
k
b
0.200 MIN
0.180
e
L
SG Micro Corp
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0.300
0.007
0.575
0.015
0.650 TYP
0.375
0.063
0.008 MIN
0.012
0.026 TYP
0.023
TX00058.000
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
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
SG Micro Corp
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1.27 BSC
0.050 BSC
L
0.400
1.270
0.016
0.050
θ
0°
8°
0°
8°
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
K0
A0
P1
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
SC70-5
7″
9.5
2.25
2.55
1.20
4.0
4.0
2.0
8.0
Q3
TDFN-3×3-8L
13″
12.4
3.35
3.35
1.13
4.0
8.0
2.0
12.0
Q1
SOIC-8
13″
12.4
6.40
5.40
2.10
4.0
8.0
2.0
12.0
Q1
SG Micro Corp
www.sg-micro.com
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
www.sg-micro.com
DD0002
Reel Type
TX20000.000
工商网监
湘ICP备2023018690号
