Page 1
ULTRA HIGH VOLTAGE
ISO-9001 CERTIFIED BY DSCC
OPERATIONAL AMPLIFIER
162/163
M.S.KENNEDY CORP.
4707 Dey Road Liverpool, N.Y. 13088
FEATURES:
Monolithic MOS Technology
Low Cost
High Voltage Operation : 350V
Low Quiescent Current : 2mA Max.
High Output Current : 60mA Min.
No Second Breakdown
High Speed : 20V/µS Typ.
Internally Compensated For Gains >10 V/V
MIL-PRF-38534 QUALIFIED
MSK162
(315) 701-6751
MSK163
DESCRIPTION:
The MSK 162 is an ultra high voltage monolithic MOSFET operational amplifier ideally suited for electrostatic transducer and
electrostatic deflection applications. With a total supply voltage rating of 350 volts and 60mA of available output current, the MSK
162 is also an excellent low cost choice for high voltage piezo drive circuits. The MOSFET output frees the MSK 162 from
secondary breakdown limitations and power dissipation is kept to a minimum with a quiescent current rating of only 2mA. The
MSK 162 is packaged in a hermetically sealed 8 pin power dip and is internally compensated for closed loop gains of 10 V/V or
greater. For applications requiring heat sinking, the MSK 163 is available with bolt down tabs and is otherwise identical to the MSK
162 (see mechanical specifications). If the application calls for a gain of less than 10 V/V, refer to the MSK 158/159 data sheet.
EQUIVALENT SCHEMATIC
TYPICAL APPLICATIONS
Piezo Electric Positioning
Electrostatic Deflection
Computer to Vacuum Tube Interface
Ultra High Voltage Op-Amp Applications
PIN-OUT INFORMATION
-Vcc
1
N/C
2
Output Drive
3
Current Sense
4
1
Inverting Input
8
Non-Inverting Input
7
N/C
6
+Vcc
5
Rev. B 7/00
Page 2
ABSOLUTE MAXIMUM RATINGS
2
VCC
±IOUT
±IOUTP
VIND
VIN
TJ
Total Supply Voltage
Output Current (within S.O.A.)
Output Current Peak
Input Voltage (Differential)
Input Voltage (Common Mode)
Junction Temperature
○○○○○○○○○○○
○○○○○○○○○○
○○○○○○○
○○○○○○○○○
ELECTRICAL SPECIFICATIONS
○○○○
120mA
○○○○
350V
60mA
±16V
±Vcc
150°C
TST
Storage Temperature
TLD
Lead Temperature
TC
Case Operating Temperature
(MSK162B/163B)
(MSK162/163)
RTH
Thermal Resistance (DC)
○○○○○○○○○○
Junction to Case
○○○○○
○○○○○○○○○○○○○○
○○○○○○○○
-65°C to +150°C
-55°C to +125°C
-40°C to +85°C
○○○○○○○○○○○○○○
300°C
10°C/W
Parameter
STATIC
Supply Voltage Range
2
4
Quiescent Current
INPUT
Offset Voltage
Offset Voltage Drift
Offset Voltage vs ±Vcc
Input Bias Current
Input Impedance
Input Capacitance
4
4
4
4
4
Common Mode Rejection
Noise
OUTPUT
Output Voltage Swing
Output Current
Power Bandwidth
Resistance
Settling Time to 0.1%
Capacitive Load
4
4
3
4
TRANSFER CHARACTERISTICS
Slew Rate
Open Loop Voltage Gain
4
Test Conditions
1
Group A
Subgroup
9
-
1
VIN=0V
2
3
VIN=0V
VIN=0V
VIN=0V
VCM=0V
1
2,3
1
1,3
2
(DC)
-
-
4
4
VCM=±90VDC
1Hz≤f≤10Hz
IOUT=±40mA Peak
VOUT=MAX
VOUT=280VPP
No Load,RCL=0Ω
10V Step
AV=+1V/V
CC=Open
F=15Hz RL=5KΩ
-
-
4
4
-
-
-
-
4
4
MSK162B/163B
84
10
10
94
Typ.
±150
±1.4
-
±2.0
-
±1.0
-
±15
-
±40
-
±20
-
±5
-
-
-
-
-
10
5
94
50
-
±141
±120
26
-
150
-
12
-
-
20
106
Min.
±50
±138
±60
11
Max.
±175
±2.0
±3.0
±2.1
±30
±65
±32
±50
±50
-
-
-
-
-
-
-
-
-
-
-
-
MSK162/163
Min.
±50
-
-
-
-
-
-
-
-
-
-
84
-
±138
±60
-
-
-
10
10
94
Typ.
±150
±1.4
-
-
±15
±40
±20
±5
-
10
5
94
50
±141
±120
26
150
12
-
20
106
11
Max.
±175
±2.0
-
-
±30
-
±32
±100
-
-
-
-
-
-
-
-
-
-
-
-
-
Units
V
mA
mA
mA
mV
µV/°C
µV/V
pA
nA
Ω
pF
dB
µVRMS
V
mA
KHz
Ω
µS
nF
V/µS
dB
NOTES:
1
Unless otherwise noted, ±VCC= ±150VDC.
2
Derate maximum supply voltage 0.5V/°C below TC=+25°C. No derating is needed above TC=25°C.
3
AV=-10V/V measured in false summing junction circuit.
4
Devices shall be capable of meeting the parameter, but need not be tested. Typical parameters are for reference only.
5
Industrial grade devices shall be tested to subgroups 1 and 4 unless otherwise requested.
6
Military grade devices ('B' suffix) shall be 100% tested to subgroups 1,2,3 and 4.
7
Subgroup 5 and 6 testing available upon request.
8
Subgroup 1,4 Tc=+25°C
Subgroup 2,5 Tc=+125°C
Subgroup 3,6 TA=-55°C
9
Electrical specifications are derated for power supply voltages less than ±50VDC.
Rev. B 7/002
Page 3
APPLICATION NOTES
CURRENT LIMIT
Current limit resistor value can be calculated as follows:
Rcl=3/Ilim
It is recommended that the user set up the value of current limit
as close as possible to the maximum expected output current
to protect the amplifier. The minumum value of current limit
resistance is 33 ohms. The maximum practical value is 500
ohms. Current limit will vary with case temperature. Refer to
the typical performance graphs as a guide. Since load current
passes through the current limit resistor, a loss in output volt-
age swing will occur. The following formula approximates out-
put voltage swing reduction:
Vr= Io Rcl
*
When the device is in current limit, there will be spurious oscil-
lations present on the negative half cycle. The frequency of
the oscillation is application dependent and can not be pre-
dicted. Oscillation will cease when the device comes out of
current limit.
INPUT PROTECTION
Input protection curcuitry within the MSK 162/163 will clip
differential input voltages greater than 16 volts. The inputs are
also protected against common mode voltages up to the supply
rails as well as static discharge. There are 300 ohm current
limiting resistors in series with each input. These resistors may
become damaged in the event the input overload is capable of
driving currents above 1mA. If severe overload conditions are
expected, external input current limiting resistors are recom-
mended.
SAFE OPERATING AREA (SOA)
The MOSFET output stage of this power operational ampli-
fier has two distinct limitations:
1. The current handling capability of the die metallization.
2. The temperature of the output MOSFET's.
NOTE: The output stage is protected against transient flyback.
However, for protection against sustained, high energy flyback,
external fast-recovery reverse biased diodes should be used.
OUTPUT SNUBBER NETWORK
A 100 ohm resistor and a 330pF capacitor connected in se-
ries from the output of the amplifier to ground is recommended
for applications where load capacitance is less than 330pF.
For larger values of load capacitance, the output snubber net-
work may be omitted. If loop stability becomes a problem due
to excessively high load capacitance, a 100 ohm resistor may
be added between the output of the amplifier and the load. A
small tradeoff with bandwidth must be made in this configura-
tion. The graph below illustrates the effect of capacitive load.
Note that the compensation capacitor must have a voltage rat-
ing greater than the total rail to rail power supply voltage.
STABILITY
The MSK 162/163 are internally compensated for closed loop
gains of 10 V/V or greater. The majority of applications the
MSK 162/163 are used in involve gains greater than 10 V/V
because the output is capable of swinging up to +/- 141V and
the maximum differential input voltage is only +/- 16V. A
large gain is necessary to make full use of the output voltage
swing capability of the amplifier when input voltages are small.
If closed loop gains of less than 10 V/V are required, refer to
the MSK 158/159 data sheets. The MSK 158/159 operational
amplifiers are identical to the MSK 162/163 except pins two
and six are compensation pins. The user can tailor op-amp
performance with the external connection of a series resistor-
capacitor snubber network. An effective method of checking
amplifier stability is to apply the worst case capacitive load to
the output of the amplifier and drive a small signal square wave
across it. If overshoot is less than 25%, the system will gen-
erally be stable.
3
Rev. B 7/00
Page 4
TYPICAL PERFORMANCE CURVES
4
Rev. B 7/00
Page 5
MECHANICAL SPECIFICATIONS
MSK162
MSK163
ESD TRIANGLE INDICATES PIN 1.
ALL DIMENSIONS ARE ±0.010 INCHES UNLESS OTHERWISE LABELED.
ORDERING INFORMATION
Part
Number
MSK162
MSK162B
MSK163
MSK163B
M.S. Kennedy Corp.
4707 Dey Road, Liverpool, New York 13088
Phone (315) 701-6751
FAX (315) 701-6752
www.mskennedy.com
The information contained herein is believed to be accurate at the time of printing. MSK reserves the right to make
changes to its products or specifications without notice, however, and assumes no liability for the use of its products.
Screening Level
Industrial
Military-Mil-PRF-38534
Industrial
Military-Mil-PRF-38534
5
Rev .B 7/00
Loading...