GAMMA GM358S8T

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Signal Conditioning
GM358
A
MICROELECTRONICS
DUAL OPERATIONAL AMPLIFIER
Description
Features
Utilizing the circuit designs perfected for two operational
Short Circuit Protected Outputs
amplifiers, these dual operational amplifiers feature low
True Differential Input Stage
power drain, a common mode input voltage range extend-
Single Supply Operation: 3.0 V to 32 V
ing to GND/ V EE, and single supply or split supply opera-
Low Input Bias Currents
tion. The GM358 is equivalent to one-half of an GM324.
Internally Compensated
Common Mode Range Extends to Negative
These amplifiers have several distinct advantages over
standard operational amplifier types in single supply applications. They can operate at supply voltages as low as 3.0
V or as high as 32 V, with quiescent currents about one-ifth
of those associated with the MC1741 (on a per amplifier ba-
Supply
Single and Split Supply Operation
ESD Clamps on the Inputs Increase
Ruggedness of the Device without Affecting
Operation
sis). The common mode input range includes the negative
supply, thereby eliminating the necessity for external biasing components in many applications. The output voltage
range also includes the negative power supply voltage.
SINGLE SUPPLY
SPLIT SUPPLIUES
3.0V to VCC(max)
VCC
VCC
1.5V to VCC(max)
1
1
2
2
1.5V to VEE(max)
VEE
VEE/ GND
GM358 V0.1
VEE/ GND
www.gammamicro.com
1
A
Signal Conditioning
GM358
A
MICROELECTRONICS
DUAL OPERATIONAL AMPLIFIER
MARKING INFORMATION & PIN CONFIGURATIONS (TOP VIEW)
DIP - 8
SOP-8
Input BInput B+
Output B
VCC
8
7
6
Input BInput B+
Output B
VCC
5
8
7
GM358
AYWW
1
2
3
5
GM358
AYWW
1
4
Output A
Input A-
6
VEE/ GND
Input A+
2
3
4
Output A
Input A-
VEE/ GND
Input A+
Output A 1
A : Assembly Location
Y : Year
W W : Weekly
8 VCC
Input A- 2
-
Input A+ 3
+
VEE/ GND 4
7 Output B
-
6 Input B-
+
5 Input B+
ORDERING INFORMATION
Ordering Number
Package
Shipping
GM358D8T
DIP-8
60 Units / Tube
GM358S8T
SOP-8
100 Units / Tube
GM358S8R
SOP-8
2,500 Units /Tape &Reel
GM358
* For detail Ordering Number identification, please see last page.
2
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Signal Conditioning
GM358
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MICROELECTRONICS
DUAL OPERATIONAL AMPLIFIER
ABSOLUTE MAXIMUM RATINGS
SYMBOL
VALUE
UNIT
VCC
VCC, VEE
32
±16
Vdc
Input Differential Voltage Range (Note 1 )
VIDR
±32
Vdc
Input Common Mode Voltage Range(Note 2)
VICR
-0.3 to 32
Vdc
Output Short Circuit Duration
tSC
Continuous
-
Junction Temperature
TJ
150
°C
RqJA
238
°C/ W
TA
0 to +70
°C
TSTG
-55 to +125
°C
-
2000
V
PARAMETER
Power Supply Voltage
Single Supply
Split Supllies
Thermal Resistance, Junction - to - Air (Note 3)
Operating Ambient Temperature Range
Storage Temperature Range
ESD Tolerance - Human Body Model (Note 4)
GM358
Note 1: Split Power Supplies.
Note 2: For Supply Voltages less 32V the absolute maximum input voltage is equal to the supply voltage.
Note 3: RqJA for Case 846A
Note 4: ESD data avilable upon request.
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Signal Conditioning
GM358
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MICROELECTRONICS
DUAL OPERATIONAL AMPLIFIER
ELECTRICAL CHARACTERISTICS
(VCC = 5V, at specified free - air temperature, unless otherwise specified)
CHARACTERISTICS
Input Offset Voltage
Average Temperature
Coefficient of Input Offset
Voltage
Input Offset Current
Average Temperature
Coefficient of Input Offset
Voltage
Input Bias Current
Common-Mode Input
Voltage Range
SYMBOL
VIO
TEST CONDITIONS
VCC = 5V to MAX
VCC = VICRmin
VO = 1.4V
aVIO
IIO
VO = 1.4V
VICR
VO = 1.4V
VOH
VCC=MAX, RL=2kW
VOL
Full range
7
25°C
2
µV/°C
50
nA
150
Full range
10
25°C
-20
pA/ °C
-250
nA
-500
25°C
0 to
VCC-1.5
Full range
0 to
VCC-2
25°C
VCC-1.5
10kW
V
Full range
26
Full range
27
28
100
V/ mV
Full range
V
5
20
mV
25°C
Full range
15
VCC = 5V to MAX,
VIC = VICRmin
25°C
65
80
dB
kSVR
VCC = 5V to MAX
25°C
65
100
dB
VO1/ VO2
f = 1kHz to 20kHz
25°C
120
dB
VCC = 15V, VO = 0,
VID = 1V
25°C
-20
Full range
-10
AVD
Common Mode Rejection
Ration
CMRR
Supply Voltage Rejection
Ration
Output Current
7
9
25
Large - Signal Differential
Voltage Amplification
Crosstalk Attenuation
RL
10kW
Unit
mV
Full range
Full range
2kW
VCC=MAX, RL
Low - Level Output Voltage
3
25°C
Max
VCC = 5V to MAX
RL
High - Level Output Voltage
Typ
Full range
aIIO
IIB
Min
IO
Short - Circuit Output Current
IOS
Supply current
(two amplifiers)
ICC
VCC=15V, VO=1V to 11V,
RL
2kW
-30
mA
VCC = 15V, VO =15V,
VID = -1V
25°C
10
Full range
5
VO = 200mV, VID = -1
25°C
12
VCC at 5V, VO = 0,
GND at -5V
25°C
±40
±60
VO = 2.5V, no load
Full range
0.7
1.2
1
2
VCC = MAX, VO = 0.5VCC
Full range
no load
20
µA
30
mA
mA
GM358
* All characteristics are measured under open loop conditions with zero common-mode input voltage unless otherwise specified.
“MAX“ VCC for testing purposes is 30V. Full range is 0°C to 70°C.
4
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Signal Conditioning
GM358
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MICROELECTRONICS
DUAL OPERATIONAL AMPLIFIER
SCHEMATIC BLOCK DIAGRAM
Bias Circuitry Common
to both Amplifiers
VCC
Output
Q15
Q16
Q22
Q14
Q13
40k
Q19
5.0pF
Q12
Q23
Q24
25k
Q18 Q20
Inputs
Q11
Q9
Q21
Q17
Q6 Q7
Q5
Q2
Q3
Q4
Q1
Q8
Q25
Q10
2.0k
2.4k
VEE/ GND
CIRCUIT DESCRIPTION
The GM358 series is made by using two internally compensated, andtwo - stage operational
amplifiers. The first stage of each consists of differential input devices Q20 and Q18, with input
buffer transistors Q21 and Q17, and the differential to single ended converter Q3 and Q4. The first
stage performs not only the first stage gain function, but also performs the level shifting and
transconductance reduction functions. By reducing the transconductance, a smaller compensation
capacitor (only 5.0 pF) can be employed, thus saving chip area. The transconductance reduction is
accomplished by splitting the collectors of Q20 and Q18.
Another feature of this input stage is that the input common mode range can include the negative
supply or ground, in single supply operation, without saturating either the input devices or the
differential to single - ended converter. The second stage consists a standard current source load
amplifier stage.
GM358
Each amplifier is biased from an internal voltage regulator, which has a low temperature coefficient
thus giving each amplifier good temperature characteristics as well as excellent power supply
rejection.
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Signal Conditioning
GM358
A
MICROELECTRONICS
DUAL OPERATIONAL AMPLIFIER
Typical Performance Characteristics
V CC = 15V
V EE = GND
T A = 25°C
100
80
60
40
20
14
0
-20
1.0
10
100
1.0k
10k
100k
100k
12
VOR, Output Voltage (mV)
Avol, Open loop Voltage Range (dB)
120
1.0M
1k
10
VIN
6.0 R L =2.0W
V CC =15V
4.0 V EE =GND
Gain=-100
2.0 R =1.0KW
I
R =100kW
0 F
1.0
10
+
400
Input
Output
250
200
0
0
1.0
2.0
3.0
4.0
5.0
6.0
7.0
8.0
IIB, Input Bias Current (nA)
1.8
lD
+
1.5
1.2
0.9
0.6
TA =25°C
RL =
0
0
5.0
10
15
20
25
30
35
t, Time(ms)
VCC, Power Supply Voltage (V)
Figure 3. Small Signal Voltage Follower
Pulse Response (Noninverting)
Figure 4. Power Supply Current versus
Power Supply Voltage
80
70
0
2.0 4.0 6.0 8.0 10
12
14 16
18 20
VCC, Power Supply Voltage (V)
Figure 5. Input Bias Current versus
Supply Voltage
GM358
mA
0.3
90
6
+
V
2.1
eO
50pF
ICC, Power Supply Current (mA)
VO, Output Voltage (mV)
2.4
300
1000
Figure 2. Large - Signal Frequency
Response
550
350
100
f, Frequency (kHZ)
Figure 1. Large-Signal Open Loop
Voltage Gain
ein
VO
2k
8.0
f, Frequency (HZ)
V CC =30V
500 V EE =GND
T =25°C
450 A
C L =50pF
+7 VDC
+5
- VDC
+
A
Signal Conditioning
GM358
A
MICROELECTRONICS
DUAL OPERATIONAL AMPLIFIER
TYPICAL APPLICATIONS
50k
1
C R
-
e1
1/2
R
GM358
+
5.0k
VCC
10k
1/2
1/2
+
VO
+
fO=
1
Vref= VCC
2
1
2 RC
1/2
GM358
e2
+
R
R = 16kW
C = 0.01µF
C
C
1
C R
-
For: fO = 1.0kHz
R
e0
GM358
bR1
GM358
R
-
aR1
R1
-
Vref
e0 = C(1 + a + b) (e2 - e1)
Figure 7. High Impedance Differential
Amplifier
Figure 6. Wien Bridge Oscillator
R2
C
Hysteresis
VOH
VO
R1
-
Vref
1/2
VCC
R3
C
R1
-
1/2
VO
GM358
Vin
Vin
GM358
R2
+
C0
C0 =10C
+
R1
(V - Vref) + Vref
R2 + R2 OL
R1
VINH=
(V - vref) + Vref
R2 + R2 OL
R1
H=
(V
- VOL)
R2 + R2 OH
VINL=
VOL
VINH
Vref
Given:
Vref =
1
V
2 CC
f0 = center frequency
A(f0) = gain center frequency
Choose value f0, C
Figure 8. Comparator with Hysteresis
R1*
0.1
Vref
VINL
VO
IL
VL
Then:
R3 =
Q
p f0 C
R1 =
R3
2 A(f0)
R1 R3
2
4Q R1 -R2
Q f
For less than 10% error from operational amplifier. 0 0 < 0.1
BW
Where f0 and BW are expressed in Hz.
R2 =
RL
-
1/2
GM358
+
R3
1k
If source impedance varies, filter may be preceded with voltage
follower buffer to stabilize filter parameter.
Figure 9. Multiple Feedback Bandpass Filter
VO
VO =
1V(IL)
1A
*(Increase R1 for IL small)
+
VL V - 2
Figure 10. Current Monitor
-
1/2
GM358
+ VIN
VO
+
VO = VIN
Figure 11. Voltage Follower
GM358
R2
100
7
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Signal Conditioning
GM358
A
MICROELECTRONICS
DUAL OPERATIONAL AMPLIFIER
SOP-8 PACKAGE OUTLINE DIMENSIONS
0.008 +0.0018
-0.0005
0.200
+0.05
-0.01
0 ° ~ 8°
0.028
0.710
+0.013
-0.022
Pad Layout
0.060
+0.33
-0.56
1.52
0.236 ± 0.008
5.990
+0.21
-0.20
0.154
+0.003
-0.004
0.275
0.155
7.0
4.0
PIN INDENT
3.91 ± 0.1
0.024
0.050
0.6
1.270
Inches
( mm )
0.063 ± 0.005
1.600 ± 0.130
0.191
+0.002
-0.004
4.850
+0.05
-0.10
0.057 NOM
1.450 NOM
( Inches )
mm
0.007 ± 0.003
0.175 ± 0.075
0.050 NOM
1.270 NOM
0.016
+0.004
-0.003
0.410
+0.10
-0.08
DIP-8 PACKAGE OUTLINE DIMENSIONS
0.26 ± 0.006
6.60
+0.15
-0.16
0.30
+0.010
-0.015
7.62
+0.25
-0.38
0.36 ± 0.01
9.14
+0.25
-0.26
GM358
0.365 ± 0.02
9.27 ± 0.51
8
0.13
+0.002
-0.006
3.30
+0.05
-0.15
0.180 MAX
4.570 MAX
0.015 MIN
0.380 MIN
0.125 MIN
3.180 MIN
0.018 ± 0.004
0.46 ± 0.10
0.039 ± 0.07
0.99 ± 0.18
0.06 ± 0.01
1.52 +0.26
-0.25
0.100 NOM
2.540 NOM
0.021 ± 0.005
0.53 +0.12
-0.13
(
Inches
)
mm
0.01
+0.002
-0.003
0.25
+0.05
-0.08
A
A
MICROELECTRONICS
Signal Conditioning
GM358
DUAL OPERATIONAL AMPLIFIER
ORDERING NUMBER
GM 358 S8 R
Gamma Micro.
Shipping
R: Tape & Reel
Circuit Type
GM358
Package
S8: SOP-8
D8: DIP-8
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A
A
MICROELECTRONICS
Signal Conditioning
GM358
GM358
DUAL OPERATIONAL AMPLIFIER
10