SGM8545 [SGMICRO]
1.1MHz, 48μA, Rail-to-Rail I/O CMOS Operational Amplifier;
| 型号： | SGM8545 |
| 厂家： | 
Shengbang Microelectronics Co, Ltd |
| 描述： | 1.1MHz, 48μA, Rail-to-Rail I/O CMOS Operational Amplifier |
| 文件： | 总12页 (文件大小：743K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
SGM8545
1.1MHz, 48μA, Rail-to-Rail I/O
CMOS Operational Amplifier
GENERAL DESCRIPTION
FEATURES
The SGM8545 (single) is a low cost, voltage feedback
amplifier. The device can operate from 2.1V to 5.5V
single supply, while consuming only 48μA quiescent
current. It provides rail-to-rail input with a wide input
common mode voltage range and rail-to-rail output
voltage swing. This feature makes SGM8545 appropriate
for buffering ASIC.
• Low Cost
• Input Offset Voltage: 3.5mV (MAX)
• Ultra-Low Input Bias Current: 0.5pA
• Unity-Gain Stable
• Gain-Bandwidth Product: 1.1MHz
• Rail-to-Rail Input and Output
• Supply Voltage Range: 2.1V to 5.5V
• Input Voltage Range:
The SGM8545 offers a gain-bandwidth product of
1.1MHz and an ultra-low input bias current of 0.5pA. It
is well suited for piezoelectric sensors, integrators and
photodiode amplifiers.
-0.1V to 5.6V with VS = 5.5V
• Low Supply Current: 48μA
• -40℃ to +125℃ Operating Temperature Range
• Available in a Green SOT-23-5 Package
The SGM8545 is designed into a wide range of
applications, such as battery-powered instrumentation,
safety monitoring, portable systems, and transducer
interface circuits in low power systems.
APPLICATIONS
ASIC Input or Output Amplifiers
Piezoelectric Transducer Amplifiers
Battery-Powered Equipment
Portable Equipment
The SGM8545 is available in a Green SOT-23-5
package. It is specified over the extended -40℃ to
+125℃ temperature range.
Sensor Interfaces
Medical Instrumentation
Mobile Communications
Audio Outputs
Smoke Detectors
Mobile Telephones
PCMCIA Cards
SG Micro Corp
NOVEMBER 2018 – REV. B. 4
www.sg-micro.com
1.1MHz, 48μA, Rail-to-Rail I/O
SGM8545
CMOS Operational Amplifier
PACKAGE/ORDERING INFORMATION
SPECIFIED
TEMPERATURE
RANGE
PACKAGE
DESCRIPTION
ORDERING
NUMBER
PACKAGE
MARKING
PACKING
OPTION
MODEL
SGM8545
-40℃ to +125℃
SOT-23-5
SGM8545XN5/TR
8545
Tape and Reel, 3000
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, +VS to -VS ................................................6V
integrated circuits be handled with appropriate precautions.
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.
Input Common Mode Voltage Range
.................................................... (-VS) - 0.3V to (+VS) + 0.3V
Package Thermal Resistance @ TA = +25℃
SOT-23-5, θJA .......................................................... 190℃/W
Junction Temperature.................................................+150℃
Storage Temperature Range.......................-65℃ to +150℃
Lead Temperature (Soldering, 10s)............................+260℃
ESD Susceptibility
DISCLAIMER
SG Micro Corp reserves the right to make any change in
HBM.............................................................................4000V
MM.................................................................................400V
circuit design, or specifications without prior notice.
PIN CONFIGURATION
RECOMMENDED OPERATING CONDITIONS
Operating Temperature Range.....................-40℃ to +125℃
(TOP VIEW)
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.
OUT
+VS
+IN
1
2
3
5
4
-VS
-IN
ESD SENSITIVITY CAUTION
SOT-23-5
This integrated circuit can be damaged if ESD protections are
not considered carefully. SGMICRO recommends that all
SG Micro Corp
www.sg-micro.com
NOVEMBER 2018
2
1.1MHz, 48μA, Rail-to-Rail I/O
SGM8545
CMOS Operational Amplifier
ELECTRICAL CHARACTERISTICS
(At VS = 5V, RL = 100kΩ connected to VS/2 and VOUT = VS/2, unless otherwise noted.)
TYP
MIN/MAX OVER TEMPERATURE
PARAMETER
SYMBOL
CONDITIONS
-40℃ to
UNITS MIN/MAX
+25℃
+25℃
+125℃
Input Characteristics
Input Offset Voltage
VOS
IB
VCM = VS/2
VS = 5.5V
0.8
0.5
3.5
mV
pA
pA
V
MAX
TYP
TYP
TYP
Input Bias Current
Input Offset Current
IOS
VCM
0.5
Input Common Mode Voltage Range
-0.1 to 5.6
88
VS = 5.5V, VCM = -0.1V to 4V
VS = 5.5V, VCM = -0.1V to 5.6V
RL = 5kΩ, VOUT = 0.1V to 4.9V
RL = 100kΩ, VOUT = 0.035V to 4.965V
71
60
70
58
Common Mode Rejection Ratio
CMRR
dB
MIN
76
100
74
85
72
77
Open-Loop Voltage Gain
AOL
dB
MIN
105
2.7
Input Offset Voltage Drift
ΔVOS/ΔT
TYP
μV/℃
Output Characteristics
VOH
VOL
RL = 100kΩ
RL = 100kΩ
RL = 10kΩ
RL = 10kΩ
4.997
5
4.980
20
4.970
30
V
mV
V
MIN
MAX
MIN
Output Voltage Swing
VOH
4.992
8
4.970
30
4.960
40
VOL
mV
MAX
ISOURCE
ISINK
84
60
45
Output Current
RL = 10Ω to VS/2
mA
MIN
75
60
45
Power Supply
2.1
5.5
70
2.5
5.5
68
V
V
MIN
MAX
MIN
Operating Voltage Range
Power Supply Rejection Ratio
Quiescent Current
PSRR VS = 2.5V to 5.5V, VCM = 0.5V
IQ
86
48
dB
μA
69
89
MAX
Dynamic Performance (CL = 100pF)
Gain-Bandwidth Product
Slew Rate
GBP
1.1
0.52
5.3
MHz
V/μs
μs
TYP
TYP
TYP
TYP
SR
tS
G = +1, 2V Output Step
G = +1, 2V Output Step
VIN ·G = VS
Settling Time to 0.1%
Overload Recovery Time
Noise Performance
2.6
μs
f = 1kHz
27
20
nV/
TYP
TYP
Hz
Hz
Input Voltage Noise Density
en
f = 10kHz
nV/
SG Micro Corp
www.sg-micro.com
NOVEMBER 2018
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1.1MHz, 48μA, Rail-to-Rail I/O
SGM8545
CMOS Operational Amplifier
TYPICAL PERFORMANCE CHARACTERISTICS
At TA = +25℃, VS = 5V, and RL = 100kΩ connected to VS/2, unless otherwise noted.
Supply Current vs. Temperature
Open-Loop Voltage Gain vs. Temperature
70
65
60
55
50
45
40
35
30
120
110
100
90
RL = 5kΩ
RL = 100kΩ
80
70
60
-50 -25
0
25
50
75 100 125 150
-50 -25
0
25
50
75 100 125 150
Temperature (℃)
Temperature (℃)
Common Mode Rejection Ratio vs. Temperature
Power Supply Rejection Ratio vs. Temperature
120
110
100
90
120
110
100
90
-VS < VCM < (+VS) - 1.5V
-VS < VCM < (+VS)
80
80
70
70
60
60
-50 -25
0
25
50
75 100 125 150
-50 -25
0
25
50
75 100 125 150
Temperature (℃)
Temperature (℃)
Supply Current vs. Supply Voltage
Short-Circuit Current vs. Supply Voltage
60
50
40
30
20
10
0
120
100
80
60
40
20
0
-20
0
1
2
3
4
5
6
7
0
1
2
3
4
5
6
7
Supply Voltage (V)
Supply Voltage (V)
SG Micro Corp
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NOVEMBER 2018
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1.1MHz, 48μA, Rail-to-Rail I/O
SGM8545
CMOS Operational Amplifier
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
At TA = +25℃, VS = 5V, and RL = 100kΩ connected to VS/2, unless otherwise noted.
Output Voltage Swing vs. Output Current
Output Voltage Swing vs. Output Current
Sourcing Current
+25℃
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0
6
5
4
3
2
1
0
Sourcing Current
+135℃
+135℃
+25℃
-55℃
-55℃
VS = 5V
VS = 3V
-55℃
-55℃
Sinking Current
+25℃
+25℃
+135℃
Sinking Current
+135℃
20 30
Output Current (mA)
0
10
40
50
60
0
20
40
60
80 100 120 140 160
Output Current (mA)
Small-Signal Overshoot vs. Load Capacitance
Small-Signal Overshoot vs. Load Capacitance
60
50
40
30
20
10
0
60
50
40
30
20
10
0
G = -5
RFB = 100kΩ
G = -1
RFB = 10kΩ
G = +1
RL = 100kΩ
G = -1
RFB = 5kΩ
10
100
1000
10000
10
100
1000
10000
Load Capacitance (pF)
Load Capacitance (pF)
Maximum Output Voltage vs. Frequency
VS = 5.5V
Open-Loop Gain and Phase vs. Frequency
80
60
40
20
0
0
6
5
4
3
2
1
0
RL = 10kΩ
CL = 100pF
Maximum Output Voltage
without Slew Rate
Induced Distortion
-30
-60
-90
-120
-150
-180
VS = 5V
Open-Loop Gain
VS = 2.5V
Phase
-20
-40
1
10
100
1000
10000
0.1
1
10
100
1000
10000
Frequency (kHz)
Frequency (kHz)
SG Micro Corp
www.sg-micro.com
NOVEMBER 2018
5
1.1MHz, 48μA, Rail-to-Rail I/O
SGM8545
CMOS Operational Amplifier
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
At TA = +25℃, VS = 5V, and RL = 100kΩ connected to VS/2, unless otherwise noted.
CMRR and PSRR vs. Frequency
Input Voltage Noise Density vs. Frequency
1000
100
10
100
90
80
70
60
50
40
30
20
10
0
CMRR
PSRR
0.01
0.1
1
10
100
0.01
0.1
1
10
100
1000 10000
Frequency (kHz)
Frequency (kHz)
Small-Signal Step Response
G = +1
Large-Signal Step Response
G = +1
CL = 100pF
RL = 100kΩ
CL = 100pF
RL = 100kΩ
Time (2μs/div)
Time (10μs/div)
Overload Recovery Time
Offset Voltage Production Distribution
Typical production
distribution of
packaged units.
27
24
21
18
15
12
9
VS = 5V
G = -5
IN = 500mV
V
2.5V
0V
500mV
0V
6
3
0
Time (2μs/div)
Offset Voltage (mV)
SG Micro Corp
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NOVEMBER 2018
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1.1MHz, 48μA, Rail-to-Rail I/O
SGM8545
CMOS Operational Amplifier
APPLICATION INFORMATION
Rail-to-Rail Input
Power Supply Decoupling and Layout
When SGM8545 works at the power supply between
2.1V and 5.5V, the input common mode voltage range
is from (-VS) - 0.1V to (+VS) + 0.1V. In Figure 1, the ESD
diodes between the inputs and the power supply rails
will clamp the input voltage not to exceed the rails.
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 amplifier 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 3.
The ceramic capacitors should be placed as close as
possible to +VS and -VS power supply pins.
+VS
VP
+
_
VN
+VS
+VS
-VS
10μF
10μF
Figure 1. Input Equivalent Circuit
0.1μF
0.1μF
Rail-to-Rail Output
The SGM8545 supports rail-to-rail output operation. In
single power supply application, for example, when +VS
= 5V, -VS = GND, 100kΩ load resistor is tied from OUT
pin to VS/2, the typical output swing range is from
0.005V to 4.997V.
_
_
VN
VP
VN
VP
VOUT
VOUT
+
+
10μF
-VS (GND)
Driving Capacitive Loads
0.1μF
The SGM8545 is designed for unity-gain stable for
capacitive load up to 250pF. If greater capacitive load
must be driven in application, the circuit in Figure 2 can
be used. In this circuit, the IR drop voltage generated
by RISO is compensated by feedback loop.
-VS
Figure 3. Amplifier Power Supply Bypassing
RF
CF
_
RISO
VOUT
CL
VIN
+
Figure 2. Circuit to Drive Heavy Capacitive Load
SG Micro Corp
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NOVEMBER 2018
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1.1MHz, 48μA, Rail-to-Rail I/O
SGM8545
CMOS Operational Amplifier
APPLICATION INFORMATION (continued)
Active Low-Pass Filter
Typical Application Circuits
The circuit in Figure 6 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.
Difference Amplifier
The circuit in Figure 4 is a design example of classical
difference amplifier. If R4/R3 = R2/R1, then VOUT = (VP -
VN) × R2/R1 + VREF
.
R2
R1
_
VN
VOUT
C
R3
VP
+
R2
R4
R1
_
VIN
VREF
VOUT
+
Figure 4. Difference Amplifier
R3 = R1 // R2
High Input Impedance Difference Amplifier
The circuit in Figure 5 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 4.
Figure 6. Active Low-Pass Filter
_
R1
R2
VN
+
_
VOUT
+
VP
+
R3
_
R4
VREF
Figure 5. High Input Impedance Difference Amplifier
SG Micro Corp
www.sg-micro.com
NOVEMBER 2018
8
1.1MHz, 48μA, Rail-to-Rail I/O
SGM8545
CMOS Operational Amplifier
REVISION HISTORY
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
NOVEMBER 2018 ‒ REV.B.3 to REV.B.4
Page
Added Open-Loop Gain and Phase vs. Frequency..............................................................................................................................................5
JANUARY 2013 ‒ REV.B.2 to REV.B.3
Page
Added Tape and Reel Information ............................................................................................................................................................... 10, 11
DECEMBER 2011 ‒ REV.B.1 to REV.B.2
Page
New version.......................................................................................................................................................................................................All
JULY 2010 ‒ REV.B to REV.B.1
Page
Changed Electrical Characteristics section..........................................................................................................................................................3
Changed Power Supply Rejection Ratio vs. Temperature....................................................................................................................................6
NOVEMBER 2006 ‒ REV.A to REV.B
Page
Changed Absolute Maximum Ratings..................................................................................................................................................................3
Changes from Original (SEPTEMBER 2005) to REV.A
Page
Changed from product preview to production data.............................................................................................................................................All
SG Micro Corp
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NOVEMBER 2018
9
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
SG Micro Corp
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TX00033.000
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
SOT-23-5
7″
9.5
3.20
3.20
1.40
4.0
4.0
2.0
8.0
Q3
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TX10000.000
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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
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TX20000.000
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