SGM8551
Single-Supply, Single Rail-to-Rail I/O
Precision Operational Amplifier
PRODUCT DESCRIPTION
The SGM8551 is a single rail-to-rail input and output
precision operational amplifier which has low input offset
voltage, and bias current. It is guaranteed to operate from
2.5V to 5.5V single supply.
The rail-to-rail input and output swings provided by the
SGM8551 make both high-side and low-side sensing easy.
The combination of characteristics makes the SGM8551
good choices for temperature, position and pressure
sensors, medical equipment and strain gauge amplifiers,
or any other 2.5V to 5.5V application requiring precision
and long term stability.
The SGM8551 is specified for the extended industrial/
automotive (-40℃ to +125℃) temperature range. It is
available in the Green SOIC-8 and MSOP-8 packages.
FEATURES
•
Low Offset Voltage: 4µV (TYP)
•
Rail-to-Rail Input and Output Swing
•
2.5V to 5.5V Single Supply Operation
•
Voltage Gain: 145dB (TYP) at +5V
•
PSRR: 110dB (TYP)
•
CMRR: 105dB (TYP)
•
Ultra Low Input Bias Current: 10pA
•
Low Supply Current: 930µA (TYP)
•
Overload Recovery Time: 60µs (at V
S
= +5V)
•
No External Capacitors Required
•
-40℃ to +125℃ Operating Temperature Range
•
Available in Green SOIC-8 and MSOP-8 Packages
PIN CONFIGURATIONS
(Top View)
SGM8551
N.C.
-INA
+INA
-V
S
1
2
3
4
N.C. = NO CONNECT
SOIC-8/MSOP-8
8
7
6
5
N.C.
+V
S
OUTA
N.C.
APPLICATIONS
Temperature Measurements
Pressure Sensors
Precision Current Sensing
Electronic Scales
Strain Gauge Amplifiers
Medical Instrumentation
Thermocouple Amplifiers
Handheld Test Equipment
SG Micro Limited
www.sg-micro.com
REV. A. 3
SGM8551
Single-Supply, Single Rail-to-Rail I/O
Precision Operational Amplifier
PACKAGE/ORDERING INFORMATION
MODEL
SGM8551
ORDER NUMBER
SGM8551XMS8G/TR
SGM8551XS8G/TR
PACKAGE
DESCRIPTION
MSOP-8
SOIC-8
PACKAGE OPTION
Tape and Reel, 3000
Tape and Reel, 2500
MARKING
INFORMATION
SGM8551XMS8
SGM8551XS8
ABSOLUTE MAXIMUM RATINGS
Supply Voltage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6V
Input Voltage . . . . . . . . . . . . . . . . . . . . . . . -V
S
to (+V
S
) + 0.1V
Differential Input Voltage . . . . . . . . . . . . . . . . . . . . . .-5V to 5V
Storage Temperature Range . . . . . . . . . . . . . -65℃ to +150℃
Junction Temperature. . . . . . . . . . . . . . . . . . . . . . . . . . . 150℃
Operating Temperature Range. . . . . . . . . . . . -40℃ to +125℃
Lead Temperature Range (Soldering 10 sec)
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260℃
ESD Susceptibility
HBM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7000V
MM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 400V
NOTE:
Stresses beyond those listed under “Absolute Maximum
Ratings” may cause permanent damage to the device. These
are stress ratings only, and functional operation of the device
at these or any other conditions beyond those indicated in the
operational sections of the specifications is not implied.
Exposure to absolute maximum rating conditions for
extended periods may affect device reliability.
CAUTION
This integrated circuit can be damaged by ESD if you don’t pay
attention to ESD protection. 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
very small parametric changes could cause the device not to
meet its published specifications.
SGMICRO reserves the right to make any change in circuit
design, specification or other related things if necessary without
notice at any time. Please contact SGMICRO sales office to get
the latest datasheet.
SG Micro Limited
www.sg-micro.com
2
SGM8551
Single-Supply, Single Rail-to-Rail I/O
Precision Operational Amplifier
ELECTRICAL CHARACTERISTICS
(V
S
= +5V, V
CM
= +2.5V, V
O
= +2.5V, T
A
= +25℃, unless otherwise noted.)
PARAMETER
INPUT CHARACTERISTICS
Input Offset Voltage (V
OS
)
Input Bias Current (I
B
)
Input Offset Current (I
OS
)
Input Voltage Range
Common-Mode Rejection Ratio
(1)
(CMRR)
V
CM
= 0V to 5V
-40℃
≤
T
A
≤
+125℃
R
L
= 10kΩ, V
O
= 0.3V to 4.7V
-40℃
≤
T
A
≤
+125℃
-40℃
≤
T
A
≤
+125℃
0
90
83
100
97
20
145
105
4
-40℃
≤
T
A
≤
+125℃
10
5
5
20
24
µV
pA
pA
V
dB
CONDITIONS
MIN
TYP
MAX
UNITS
Large Signal Voltage Gain (A
VO
)
Input Offset Voltage Drift (∆V
OS
/∆
T
)
OUTPUT CHARACTERISTICS
dB
nV/℃
R
L
= 100kΩ to -V
S
Output Voltage High (V
OH
)
-40℃
≤
T
A
≤
+125℃
R
L
= 10kΩ to -V
S
-40℃
≤
T
A
≤
+125℃
R
L
= 100kΩ to +V
S
Output Voltage Low (V
OL
)
-40℃
≤
T
A
≤
+125℃
R
L
= 10kΩ to +V
S
-40℃
≤
T
A
≤
+125℃
Short Circuit Limit (I
SC
)
POWER SUPPLY
Power Supply Rejection Ratio
(1)
(PSRR)
V
S
= 2.5V to 5.5V
-40℃
≤
T
A
≤
+125℃
V
O
= +V
S
/2
-40℃
≤
T
A
≤
+125℃
V
O
= 2.5V, R
L
=10Ω to GND
-40℃
≤
T
A
≤
+125℃
4.99
4.987
4.985
4.98
4.998
V
4.996
V
10
13
2
mV
6
15
20
mV
40
23
48
mA
90
80
110
dB
1110
1760
Quiescent Current (I
Q
)
DYNAMIC PERFORMANCE
Gain-Bandwidth Product (GBP)
Slew Rate (SR)
Overload Recovery Time
NOISE PERFORMANCE
Voltage Noise (e
n
p-p)
Voltage Noise Density (e
n
)
930
µA
A
V
= +100
A
V
= +1, R
L
= 10kΩ, 2V Output Step
A
V
= -100, R
L
= 10kΩ, V
IN
= 200mV (RET to GND)
0.1Hz to 10Hz
f = 1kHz
1.53
0.90
0.06
MHz
V/µs
ms
0.80
47.5
µV
P-P
nV/
Hz
NOTE 1: PSRR and CMRR are affected by the matching between external gain-setting resistor ratios.
SG Micro Limited
www.sg-micro.com
3
SGM8551
Single-Supply, Single Rail-to-Rail I/O
Precision Operational Amplifier
ELECTRICAL CHARACTERISTICS
(V
S
= +2.5V, V
CM
= +1.25V, V
O
= +1.25V, T
A
= +25℃, unless otherwise noted.)
PARAMETER
INPUT CHARACTERISTICS
Input Offset Voltage (V
OS
)
Input Bias Current (I
B
)
Input Offset Current (I
OS
)
Input Voltage Range
Common-Mode Rejection Ratio
(1)
(CMRR)
V
CM
= 0V to 2.5V
-40℃
≤
T
A
≤
+125℃
R
L
= 10kΩ, V
O
= 0.3V to 2.4V
-40℃
≤
T
A
≤
+125℃
-40℃
≤
T
A
≤
+125℃
0
90
81
100
94
20
135
105
3
-40℃
≤
T
A
≤
+125℃
10
10
2.5
20
24
µV
pA
pA
V
dB
CONDITIONS
MIN
TYP
MAX
UNITS
Large Signal Voltage Gain (A
VO
)
Input Offset Voltage Drift (∆V
OS
/∆
T
)
OUTPUT CHARACTERISTICS
dB
nV/℃
R
L
= 100kΩ to -V
S
Output Voltage High (V
OH
)
-40℃
≤
T
A
≤
+125℃
R
L
= 10kΩ to -V
S
-40℃
≤
T
A
≤
+125℃
R
L
= 100kΩ to +V
S
Output Voltage Low (V
OL
)
-40℃
≤
T
A
≤
+125℃
R
L
= 10kΩ to +V
S
-40℃
≤
T
A
≤
+125℃
Short Circuit Limit (I
SC
)
POWER SUPPLY
Power Supply Rejection Ratio
(1)
(PSRR)
V
S
= 2.5V to 5.5V
-40℃
≤
T
A
≤
+125℃
V
O
= +V
S
/2
-40℃
≤
T
A
≤
+125℃
V
O
= 1.25V, R
L
=10Ω to GND
-40℃
≤
T
A
≤
+125℃
2.49
2.488
2.485
2.482
2.499
V
2.498
V
10
12
1
mV
3
15
18
mV
20
15
28
mA
90
80
110
dB
1110
2090
Quiescent Current (I
Q
)
DYNAMIC PERFORMANCE
Gain-Bandwidth Product (GBP)
Slew Rate (SR)
Overload Recovery Time
NOISE PERFORMANCE
Voltage Noise (e
n
p-p)
Voltage Noise Density (e
n
)
1000
µA
A
V
= +100
A
V
= +1, R
L
= 10kΩ, 2V Output Step
A
V
= -100, R
L
= 10kΩ, V
IN
= 200mV (RET to GND)
0.1Hz to 10Hz
f = 1kHz
1.51
0.90
0.03
MHz
V/µs
ms
0.95
53
µV
P-P
nV/
Hz
NOTE 1: PSRR and CMRR are affected by the matching between external gain-setting resistor ratios.
SG Micro Limited
www.sg-micro.com
4
SGM8551
Single-Supply, Single Rail-to-Rail I/O
Precision Operational Amplifier
TYPICAL PERFORMANCE CHARACTERISTICS
Large Signal Transient Response at +5V
Large Signal Transient Response at +2.5V
C
L
= 300pF
R
L
= 2kΩ
A
V
= +1
V
OUT
(500mV/div)
V
OUT
(1V/div)
C
L
= 300pF
R
L
= 2kΩ
A
V
= +1
Time (5µs/div)
Time (2µs/div)
Small Signal Transient Response at +5V
C
L
= 50pF
R
L
=
∞
A
V
= +1
Small Signal Transient Response at +2.5V
C
L
= 50pF
R
L
=
∞
A
V
= +1
V
OUT
(50mV/div)
V
OUT
(50mV/div)
Time (5µs/div)
Time (5µs/div)
Closed Loop Gain vs. Frequency at +5V
60
Closed Loop Gain (dB)
Closed Loop Gain (dB)
60
Closed Loop Gain vs. Frequency at +2.5V
50
40
30
20
10
0
-10
-20
-30
-40
A
V
= -10
A
V
= +1
A
V
= -100
50
40
30
20
10
0
-10
-20
-30
-40
10
A
V
= -100
A
V
= -10
A
V
= +1
100
1000
10000
10
100
1000
10000
Frequency (kHz)
Frequency (kHz)
SG Micro Limited
www.sg-micro.com
5
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