SGM8541/2/4
1.1MHz, 46μA, Rail-to-Rail I/O
CMOS Operational Amplifiers
PRODUCT DESCRIPTION
The SGM8541 (single), SGM8542 (dual) and SGM8544
(quad) are low cost, rail-to-rail input and output voltage
feedback amplifiers. They have a wide input common-
mode voltage range and output voltage swing, and take
the minimum operating supply voltage down to 2.1V. The
maximum recommended supply voltage is 5.5V. All are
specified over the extended -40℃ to +125℃ temperature
range.
The SGM8541/2/4 provide 1.1MHz bandwidth at a low
current consumption of 46μA per amplifier. Very low input
bias currents of 0.5pA enable SGM8541/2/4 to be used
for integrators, photodiode amplifiers, and piezoelectric
sensors. Rail-to-rail input and output are useful to
designers for buffering ASIC in single-supply systems.
Applications for these amplifiers include safety monitoring,
portable equipment, battery and power supply control,
and signal conditioning and interfacing for transducers in
very low power systems.
The SGM8541 single is available in the Green SOT-23-5,
SC70-5 and SOIC-8 packages. The SGM8542 dual
comes in the Green SOIC-8, MSOP-8 and TSSOP-8
packages. The quad SGM8544 is offered in Green
TSSOP-14 and SOIC-14 packages.
FEATURES
Low Cost
Rail-to-Rail Input and Output
0.8mV Typical V
OS
Unity Gain Stable
Gain-Bandwidth Product: 1.1MHz
Very Low Input Bias Current: 0.5pA
Supply Voltage Range: 2.1V to 5.5V
Input Voltage Range:
-0.1V to +5.6V with V
S
= 5.5V
Low Supply Current: 46μA/Amplifier
Small Packaging
SGM8541 Available in SOIC-8, SC70-5 and
SOT-23-5
SGM8542 Available in SOIC-8, MSOP-8 and
TSSOP-8
SGM8544 Available in SOIC-14 and TSSOP-14
PIN CONFIGURATIONS
(TOP VIEW)
SGM8541
NC
-IN
+IN
-V
S
1
2
3
4
8
7
6
5
NC
OUT
+V
S
OUT
+IN
3
SC70-5/SOT-23-5
SOIC-8
NC = NO CONNECT
4
-IN
NC
-V
S
1
2
5
+V
S
SGM8541
APPLICATIONS
ASIC Input or Output Amplifier
Sensor Interface
Piezoelectric Transducer Amplifier
Medical Instrumentation
Mobile Communication
Audio Output
Portable Systems
Smoke Detectors
Mobile Telephone
Notebook PC
PCMCIA Cards
Battery-Powered Equipment
SG Micro Corp
www.sg-micro.com
SGM8544
OUTA
-INA
1
2
3
4
5
6
7
SOIC-14/TSSOP-14
14
13
12
11
10
9
8
OUTD
-IND
+IND
-V
S
+INC
-INC
OUTC
SGM8542
OUTA
-INA
+INA
-V
S
1
2
3
4
8
7
6
5
+V
S
OUTB
-INB
+INB
+INA
+V
S
+INB
-INB
OUTB
SOIC-8/MSOP-8/TSSOP-8
REV. C. 2
SGM8541/2/4
PACKAGE/ORDERING INFORMATION
MODEL
ORDER NUMBER
SGM8541XC5/TR
SGM8541
SGM8541XN5/TR
SGM8541XS/TR
SGM8542XS/TR
SGM8542
SGM8542XMS/TR
SGM8542XTS8G/TR
SGM8544
SGM8544XS14/TR
SGM8544XTS14/TR
PACKAGE
DESCRIPTION
SC70-5
SOT-23-5
SOIC-8
SOIC-8
MSOP-8
TSSOP-8
SOIC-14
TSSOP-14
1.1MHz, 46μA, Rail-to-Rail I/O
CMOS Operational Amplifiers
PACKAGE
OPTION
Tape and Reel, 3000
Tape and Reel, 3000
Tape and Reel, 2500
Tape and Reel, 2500
Tape and Reel, 3000
Tape and Reel, 4000
Tape and Reel, 2500
Tape and Reel, 3000
MARKING
INFORMATION
8541
8541
SGM8541XS
SGM8542XS
SGM8542XMS
SGM8542XTS8
SGM8544XS14
SGM8544XTS14
ABSOLUTE MAXIMUM RATINGS
Supply Voltage, +V
S
to -V
S
.....................................................6V
Input Common Mode Voltage
..........................................................(-V
S
) - 0.3V to (+V
S
) + 0.3V
Storage Temperature Range..............................-65℃ to +150℃
Junction Temperature .......................................................150℃
Operating Temperature Range ......................... -40℃ to +125℃
Package Thermal Resistance @ T
A
= +25℃
SC70-5,
θ
JA
................................................................... 333℃/W
SOT-23-5,
θ
JA
............................................................... 190℃/W
SOIC-8,
θ
JA
....................................................................125℃/W
MSOP-8,
θ
JA
.................................................................216℃/W
TSSOP-8,
θ
JA………………………………………………………………………
175℃/W
Lead Temperature (Soldering 10sec)................................260℃
ESD Susceptibility
HBM..................................................................................4000V
MM......................................................................................400V
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.
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.
SG Micro Corp
www.sg-micro.com
2
SGM8541/2/4
1.1MHz, 46μA, Rail-to-Rail I/O
CMOS Operational Amplifiers
ELECTRICAL CHARACTERISTICS
(At V
S
= +5V, R
L
= 100kΩ connected to V
S
/2 and V
OUT
= V
S
/2, unless otherwise noted.)
SGM8541/2/4
PARAMETER
SYMBOL
CONDITIONS
TYP
+25℃
INPUT CHARACTERISTICS
Input Offset Voltage
Input Bias Current
Input Offset Current
Input Common Mode Voltage Range
Common Mode Rejection Ratio
V
OS
I
B
I
OS
V
CM
CMRR
V
S
= 5.5V
V
S
= 5.5V, V
CM
= -0.1V to +4V
V
S
= 5.5V, V
CM
= -0.1V to +5.6V
Open-Loop Voltage Gain
Input Offset Voltage Drift
OUTPUT CHARACTERISTICS
V
OH
Output Voltage Swing from Rail
V
OL
V
OH
V
OL
Output Current
POWER SUPPLY
Operating Voltage Range
Power Supply Rejection Ratio
Quiescent Current/Amplifier
DYNAMIC PERFORMANCE
(C
L
= 100pF)
Gain-Bandwidth Product
Slew Rate
Settling Time to 0.1%
Overload Recovery Time
NOISE PERFORMANCE
Voltage Noise Density
e
n
f = 1kHz
f = 10kHz
27
20
nV/
nV/
Hz
Hz
MIN/MAX OVER TEMPERATURE
+25℃
-40℃ to
+125℃
UNITS
MIN/MAX
V
CM
= V
S
/2
0.8
0.5
0.5
-0.1 to +5.6
87
80
98
105
2.7
3.5
mV
pA
pA
V
MAX
TYP
TYP
TYP
MIN
71
60
80
85
69
56
73
74
dB
A
OL
ΔV
OS
/Δ
T
R
L
= 5kΩ, V
O
= +0.1V to +4.9V
R
L
= 100kΩ, V
O
= +0.035V to +4.965V
dB
μV/℃
MIN
TYP
R
L
= 100kΩ
R
L
= 100kΩ
R
L
= 10kΩ
R
L
= 10kΩ
R
L
= 10Ω to V
S
/2
4.997
5
4.992
8
85
75
4.980
20
4.970
30
60
60
4.970
30
4.960
40
45
45
V
mV
V
mV
mA
MIN
MAX
MIN
MAX
MIN
I
SOURCE
I
SINK
2.1
5.5
PSRR
I
Q
V
S
= +2.5V to +5.5V, V
CM
= +0.5V
87
46
70
69
2.5
5.5
64
89
V
V
dB
μA
MIN
MAX
MIN
MAX
GBP
SR
t
S
G = +1, 2V Output Step
G = +1, 2V Output Step
V
IN
·Gain = V
S
1.1
0.52
5.3
2.6
MHz
V/μs
μs
μs
TYP
TYP
TYP
TYP
TYP
TYP
SG Micro Corp
www.sg-micro.com
3
SGM8541/2/4
1.1MHz, 46μA, Rail-to-Rail I/O
CMOS Operational Amplifiers
TYPICAL PERFORMANCE CHARACTERISTICS
At T
A
= +25℃, V
S
= +5V, and R
L
= 100kΩ connected to V
S
/2, unless otherwise noted.
Small-Signal Step Response
G = +1
C
L
= 100pF
R
L
= 100kΩ
500mV/div
Large-Signal Step Response
G = +1
C
L
= 100pF
R
L
= 100kΩ
20mV/div
2μs/div
10μs/div
Small-Signal Overshoot vs. Load Capacitance
60
Small-Signal Overshoot (%)
50
40
30
20
10
0
10
100
1000
Load Capacitance (pF)
10000
Small-Signal Overshoot (%)
60
Small-Signal Overshoot vs. Load Capacitance
G = -1
R
FB
= 10kΩ
G = -5
R
FB
= 100kΩ
50
40
30
20
10
0
10
G = +1
R
L
= 100kΩ
G = -1
R
FB
= 5kΩ
100
1000
10000
Load Capacitance (pF)
Maximum Output Voltage vs. Frequency
6
5
Output Voltage (V
p-p
)
4
3
2
1
0
1
10
100
1000
Frequency (kHz)
10000
V
S
= 2.5V
V
S
= 5V
V
S
= 5.5V
Maximum Output Voltage
without Slew-Rate
Induced Distortion
Short-Circuit Current vs. Supply Voltage
120
Short-Circuit Current (mA)
100
80
60
40
20
0
-20
0
1
2
3
4
5
6
7
Supply Voltage (V)
SG Micro Corp
www.sg-micro.com
4
SGM8541/2/4
1.1MHz, 46μA, Rail-to-Rail I/O
CMOS Operational Amplifiers
TYPICAL PERFORMANCE CHARACTERISTICS
At T
A
= +25℃, V
S
= +5V, and R
L
= 100kΩ connected to V
S
/2, unless otherwise noted.
CMRR and PSRR vs. Frequency
100
80
CMRR, PSRR (dB)
70
60
50
40
30
20
10
0
0.01
0.1
1
10
100
Frequency (kHz)
1000
10000
10
0.01
0.1
1
10
Frequency (kHz)
100
Voltage Noise (nV/√Hz)
1000
Input Voltage Noise Spectral Density
vs. Frequency
90
CMRR
100
PSRR
Output Voltage vs. Output Current
6
5
Output Voltage (V)
4
3
2
1
0
0
20
40
135℃
60
80
-55℃
25℃
Sinking Current
V
S
= 5V
135℃
Sourcing Current
3.5
3.0
Output Voltage (V)
Output Voltage vs. Output Current
135℃
Sourcing Current
25℃
-55℃
V
S
= 3V
25℃
-55℃
2.5
2.0
1.5
1.0
0.5
0.0
0
10
20
30
135℃
-55℃
25℃
Sinking Current
40
50
60
100 120 140 160
Output Current (mA)
Output Current (mA)
Supply Current vs. Temperature
80
70
Open–Loop Gain (dB)
120
110
100
90
80
70
60
Open-Loop Gain vs. Temperature
R
L
= 5kΩ
R
L
= 100kΩ
Supply Current (μA)
60
50
40
30
20
10
0
-50
-25
0
25
50
75
100 125 150
Temperature (℃)
-50
-25
0
25
50
75
100 125 150
Temperature (℃)
SG Micro Corp
www.sg-micro.com
5
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