SGM8956XTDE8G [SGMICRO]
High Precision, Low Power, Rail-to-Rail I/O, CMOS Operational Amplifier;
| 型号： | SGM8956XTDE8G |
| 厂家： | 
Shengbang Microelectronics Co, Ltd |
| 描述： | High Precision, Low Power, Rail-to-Rail I/O, CMOS Operational Amplifier |
| 文件： | 总12页 (文件大小：787K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
SGM8956XTDE8G
High Precision, Low Power, Rail-to-Rail I/O,
CMOS Operational Amplifier
GENERAL DESCRIPTION
FEATURES
The SGM8956XTDE8G is a dual, low power and high
precision CMOS operational amplifier, which can
operate from 1.8V to 5.5V single supply or from ±0.9V
to ±2.75V dual power supplies, while consuming only
20μA quiescent current per amplifier. The device
supports rail-to-rail input and output operation. The
input common mode voltage range is from (-VS) - 0.1V
to (+VS) + 0.1V, and the output range is from (-VS) +
0.014V to (+VS) - 0.014V.
● Low Input Offset Voltage: 50μV (MAX)
● Low Noise: 2μVP-P at 0.1Hz to 10Hz
● Integrated RFI Filter
● Rail-to-Rail Input and Output
● Support Single or Dual Power Supplies:
1.8V to 5.5V or ±0.9V to ±2.75V
● Quiescent Current: 20μA/Amplifier (TYP)
● -40℃ to +125℃ Operating Temperature Range
● Available in a Green TDFN-2×2-8L Package
The SGM8956XTDE8G is designed to provide optimal
performance in low voltage and low power systems. It
has high impedance inputs and zero-drift 50μV (MAX)
offset voltage. These specifications make the device
appropriate for a wide range of applications requiring
high precision, such as high linearity driver of high
precision ADC.
APPLICATIONS
Industrial Equipment
Battery-Powered Equipment
Sensor Signal Conditioning
The SGM8956XTDE8G is available in a Green
TDFN-2×2-8L package. It operates over an ambient
temperature range of -40℃ to +125℃.
SG Micro Corp
OCTOBER 2020 - REV. A. 1
www.sg-micro.com
High Precision, Low Power, Rail-to-Rail I/O,
CMOS Operational Amplifier
SGM8956XTDE8G
PACKAGE/ORDERING INFORMATION
SPECIFIED
TEMPERATURE
RANGE
PACKAGE
DESCRIPTION
ORDERING
NUMBER
PACKAGE
MARKING
PACKING
OPTION
MODEL
8956
XXXX
SGM8956XTDE8G
TDFN-2×2-8L
SGM8956XTDE8G/TR
Tape and Reel, 3000
-40℃ to +125℃
MARKING INFORMATION
NOTE: XXXX = Date Code.
X X X X
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...................................................................6V
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
Junction Temperature .................................................+150℃
Storage Temperature Range.........................-65℃ to +150℃
Lead Temperature (Soldering, 10s) ............................+260℃
ESD Susceptibility
DISCLAIMER
HBM.............................................................................4000V
MM.................................................................................400V
CDM ............................................................................1000V
SG Micro Corp reserves the right to make any change in
circuit design, or specifications without prior notice.
RECOMMENDED OPERATING CONDITIONS
Specified Voltage Range ....................................1.8V to 5.5V
Operating Temperature Range .....................-40℃ to +125℃
PIN CONFIGURATION
(TOP VIEW)
OVERSTRESS CAUTION
OUTA
-INA
+INA
-VS
1
2
3
4
8
7
6
5
+VS
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.
OUTB
-INB
+INB
Exposed
Pad
ESD SENSITIVITY CAUTION
TDFN-2×2-8L
This integrated circuit can be damaged if ESD protections are
not considered carefully. SGMICRO recommends that all
integrated circuits be handled with appropriate precautions.
NOTE: Exposed pad can be connected to -VS or left floating.
SG Micro Corp
www.sg-micro.com
OCTOBER 2020
2
High Precision, Low Power, Rail-to-Rail I/O,
CMOS Operational Amplifier
SGM8956XTDE8G
ELECTRICAL CHARACTERISTICS
(At TA = +25℃, VS = 1.8V to 5.5V, VCM = +VS/2, VOUT = +VS/2 and RL = 10kΩ to +VS/2, Full = -40℃ to +125℃, unless otherwise
noted.)
PARAMETER
SYMBOL
CONDITIONS
TEMP
MIN
TYP
MAX
UNITS
Input Characteristics
22
50
83
+25℃
Full
Input Offset Voltage
VOS
VS = 5V
μV
Input Offset Voltage Drift
Input Bias Current
ΔVOS/ΔT
IB
Full
0.08
130
μV/℃
pA
+25℃
+25℃
+25℃
Full
Input Common Mode Voltage Range
VCM
(-VS) - 0.1
(+VS) + 0.1
V
89
85
95
94
100
121
Common Mode Rejection Ratio
Open-Loop Voltage Gain
CMRR
(-VS) - 0.1V < VCM < (+VS) + 0.1V
dB
dB
+25℃
Full
(-VS) + 0.1V < VOUT < (+VS) - 0.1V,
RL = 10kΩ
AOL
Input Impedance
Differential
109
109
Ω
Ω
+25℃
+25℃
Common Mode
Output Characteristics
14
25
27
+25℃
Full
Output Voltage Swing from Rail
Output Short-Circuit Current
RL = 10kΩ
mV
VS = 1.8V
6
60
1
+25℃
+25℃
+25℃
ISC
mA
kΩ
VS = 5V
Open-Loop Output Impedance
Power Supply
f = 350kHz, IOUT = 0
Specified Voltage Range
VS
Full
+25℃
Full
1.8
5.5
20
25
37
48
V
4
Power Supply Rejection Ratio
PSRR
VS = 1.8V to 5.5V
μV/V
20
+25℃
Full
Quiescent Current/Amplifier
IQ
IOUT = 0
VS = 5V
μA
μs
Turn-On Time
220
+25℃
Dynamic Performance
Gain-Bandwidth Product
Slew Rate
GBP
SR
CL = 100pF
G = +1
350
kHz
+25℃
+25℃
0.18
V/μs
Noise
Input Voltage Noise
f = 0.1Hz to 10Hz
2
μVP-P
+25℃
SG Micro Corp
www.sg-micro.com
OCTOBER 2020
3
High Precision, Low Power, Rail-to-Rail I/O,
CMOS Operational Amplifier
SGM8956XTDE8G
TYPICAL PERFORMANCE CHARACTERISTICS
At TA = +25℃, VS = 5V and CL = 0pF, unless otherwise noted.
Common Mode Rejection Ratio vs. Frequency
VS = 5V
Power Supply Rejection Ratio vs. Frequency
VS = 5V
120
100
80
60
40
20
0
120
100
80
60
40
20
0
PSRR+
PSRR-
1
10
100
1000
0.1
1
10
100
1000
Frequency (kHz)
Frequency (kHz)
Output Voltage Swing vs. Output Current
VS = 1.8V
Output Voltage Swing vs. Output Current
VS = 5.5V
6
2.5
2
5
4
3
2
1
0
-40℃
1.5
1
+125℃
-40℃
+25℃
+125℃
+25℃
0.5
0
0
10
20
30
40
50
60
0
2
4
6
8
10
12
Output Current (mA)
Output Current (mA)
Quiescent Current vs. Temperature
Settling Time vs. Closed-Loop Gain
50
40
30
20
10
0
120
100
80
60
40
20
0
VS = 1.8V
VS = 5V
-50
-25
0
25
50
75
100
125
1
10
100
Gain (dB)
Temperature (℃)
SG Micro Corp
www.sg-micro.com
OCTOBER 2020
4
High Precision, Low Power, Rail-to-Rail I/O,
CMOS Operational Amplifier
SGM8956XTDE8G
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
At TA = +25℃, VS = 5V and CL = 0pF, unless otherwise noted.
Large-Signal Step Response
Small-Signal Step Response
G = 1
RL = 10kΩ
G = 1
RL = 10kΩ
Time (50μs/div)
Time (5μs/div)
Positive Over-Voltage Recovery
Negative Over-Voltage Recovery
0V
VIN
VIN
0V
G = -10
RL = 10kΩ
0V
G = -10
RL = 10kΩ
VOUT
VOUT
0V
Time (50µs/div)
Time (50µs/div)
Small-Signal Overshoot vs. Load Capacitance
0.1Hz to 10Hz Noise
30
25
20
15
10
5
0
10
100
1000
Time (2s/div)
Load Capacitance (pF)
SG Micro Corp
www.sg-micro.com
OCTOBER 2020
5
High Precision, Low Power, Rail-to-Rail I/O,
CMOS Operational Amplifier
SGM8956XTDE8G
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
At TA = +25℃, VS = 5V and CL = 0pF, unless otherwise noted.
Voltage Noise Spectral Density vs. Frequency
Offset Voltage Production Distribution
1000
100
10
50
45
40
35
30
25
20
15
10
5
21000 Samples
1 Production Lot
VS = 5V
Continues with no 1/f (flicker) noise.
1
0
100
1000
10000
Frequency (Hz)
Offset Voltage (μV)
SG Micro Corp
www.sg-micro.com
OCTOBER 2020
6
High Precision, Low Power, Rail-to-Rail I/O,
CMOS Operational Amplifier
SGM8956XTDE8G
APPLICATION INFORMATION
Rail-to-Rail Input
Driving Capacitive Loads
When SGM8956XTDE8G works at the power supply
between 1.8V 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.
The SGM8956XTDE8G is unity-gain stable with heavy
capacitive load. If greater capacitive load must be
driven in application, the circuit in Figure 3 can be used.
In this circuit, the IR drop voltage generated by RISO is
compensated by feedback loop.
RF
CF
+VS
VP
+
_
RISO
VOUT
_
VN
CL
VIN
+
-VS
Figure 3. Circuit to Drive Heavy Capacitive Load
Figure 1. Input Equivalent Circuit
Power Supply Decoupling and Layout
Input Current-Limit Protection
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 4.
The ceramic capacitors should be placed as close as
possible to +VS and -VS power supply pins.
For ESD diode clamping protection, when the current
flowing through ESD diode exceeds the maximum
rating value, the ESD diode and amplifier will be
damaged, so current-limit protection will be added in
some applications. One resistor is selected to limit the
current not to exceed the maximum rating value. In
Figure 2, a series input resistor is used to limit the input
current to less than 10mA, but the drawback of this
current-limit resistor is that it contributes thermal noise
at the amplifier input. If this resistor must be added, its
value must be selected as small as possible.
+VS
+VS
10μF
10μF
+VS
_
0.1μF
0.1μF
IOVERLOAD
10mA MAX
VOUT
_
_
VN
VP
VN
VP
VIN
+
VOUT
VOUT
+
+
10μF
Figure 2. Input Current-Limit Protection
-VS (GND)
Rail-to-Rail Output
0.1μF
The SGM8956XTDE8G supports rail-to-rail output
operation. In single power supply application, for
example, when +VS = 5.5V, -VS = GND, 10kΩ load
resistor is tied from OUT pin to VS/2, the typical output
swing range is from 0.014V to 5.486V.
-VS
Figure 4. Amplifier Power Supply Bypassing
SG Micro Corp
www.sg-micro.com
OCTOBER 2020
7
High Precision, Low Power, Rail-to-Rail I/O,
CMOS Operational Amplifier
SGM8956XTDE8G
APPLICATION INFORMATION (continued)
the input are used to increase the input impedance and
eliminate drawback of low input impedance in Figure 5.
Grounding
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.
_
R1
R2
VN
+
_
VOUT
+
VP
+
Reduce Input-to-Output Coupling
R3
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.
_
R4
VREF
Figure 6. High Input Impedance Difference Amplifier
Active Low-Pass Filter
The circuit in Figure 7 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.
Typical Application Circuits
Difference Amplifier
The circuit in Figure 5 is a design example of classical
difference amplifier. If R4/R3 = R2/R1, then VOUT = (VP -
VN) × R2/R1 + VREF
.
R2
C
R1
_
R2
VN
VOUT
R1
R3
_
VIN
VP
+
VOUT
R4
+
VREF
R3 = R1 // R2
Figure 5. Difference Amplifier
High Input Impedance Difference Amplifier
The circuit in Figure 6 is a design example of high input
impedance difference amplifier, the added amplifiers at
Figure 7. Active Low-Pass Filter
SG Micro Corp
www.sg-micro.com
OCTOBER 2020
8
High Precision, Low Power, Rail-to-Rail I/O,
CMOS Operational Amplifier
SGM8956XTDE8G
REVISION HISTORY
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
OCTOBER 2020 ‒ REV.A to REV.A.1
Page
Updated Typical Performance Characteristics section.........................................................................................................................................5
Changes from Original (MARCH 2018) to REV.A
Page
Changed from product preview to production data.............................................................................................................................................All
SG Micro Corp
www.sg-micro.com
OCTOBER 2020
9
PACKAGE INFORMATION
PACKAGE OUTLINE DIMENSIONS
TDFN-2×2-8L
D
e
N8
E1
D1
L
E
k
N4
N1
b
BOTTOM VIEW
TOP VIEW
1.20
0.65
0.60 1.95
A
A1
A2
SIDE VIEW
0.24
0.50
RECOMMENDED LAND PATTERN (Unit: mm)
Dimensions
In Millimeters
Dimensions
In Inches
Symbol
MIN
MAX
0.800
0.050
MIN
0.028
0.000
MAX
0.031
0.002
A
A1
A2
D
0.700
0.000
0.203 REF
0.008 REF
1.900
1.100
1.900
0.500
2.100
1.300
2.100
0.700
0.075
0.043
0.075
0.020
0.083
0.051
0.083
0.028
D1
E
E1
k
0.200 MIN
0.500 TYP
0.008 MIN
0.020 TYP
b
0.180
0.250
0.300
0.450
0.007
0.010
0.012
0.018
e
L
SG Micro Corp
www.sg-micro.com
TX00056.000
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
TDFN-2×2-8L
7″
9.5
2.30
2.30
1.10
4.0
4.0
2.0
8.0
Q1
SG Micro Corp
TX10000.000
www.sg-micro.com
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
www.sg-micro.com
TX20000.000
相关型号：
SGM8967-1
2.7mA, 27MHz, High Precision, Low Noise, Rail-to-Rail I/O, CMOS Operational Amplifier
SGMICRO
©2020 ICPDF网 联系我们和版权申明