View MSK181Z_1284355.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

ISO-9001 CERTIFIED BY DSCC
M.S.KENNEDY CORP. FEATURES:
HIGH VOLTAGE/HIGH CURRENT OPERATIONAL AMPLIFIER
181
(315) 701-6751
4707 Dey Road Liverpool, N.Y. 13088
Low Cost High Voltage Operation: Single Supply: +8V to +60V Dual Supply: 4V to30V High Output Current: 3 Amp Continuous High Speed: 10V/S Low Quiescent Current: 20 mA Typ. Adjustable Current Limits Thermal Shutdown Monolithic Technology Enable/Status Pin For Output Disable Control
MIL-PRF-38534 CERTIFIED
DESCRIPTION:
MSK181
MSK181Z
The MSK 181 is a high power monolithic operational amplifier ideal for use with a wide variety of loads. With operation from either single or dual supplies, the MSK 181 offers excellent design flexibility. Power dissipation is kept to a minimum with a quiescent current rating of only 20mA, while 3 Amps of continuous available output current makes the MSK 181 a very good low cost choice for motor drive circuits and audio amplification. The MSK 181 is internally protected against current overloads and overtemperature conditions. Current limit can also be user-selected through the use of a resistor/potentiometer or voltage out/ current out DAC. The MSK 181 is packaged in a hermetically sealed 8 pin power dip and the MSK 181Z is offered with bolt down tabs for applications that require heat sinking.
EQUIVALENT SCHEMATIC
TYPICAL APPLICATIONS
Servo Driver Actuator Driver Audio Amplifier Power Supplies
1
PIN-OUT INFORMATION
1 2 3 4 +VIN -VIN ILIM E/S 8 7 6 5 -Vcc +Vcc Output N/C
PRELIMINARY Rev. C 8/01
ABSOLUTE MAXIMUM RATINGS

-55C to +125C -40C to +85C

1.8C/W
ELECTRICAL SPECIFICATIONS
Parameter STATIC Supply Voltage Range 2 Quiescent Current Quiescent Current INPUT Input Offset Voltage Input Offset Voltage Drift Input Bias Current 2 Input Offset Current 2 Input Impedance Input Capacitance Input Voltage Noise Density OUTPUT Output Voltage Swing Output Current Shutdown Input Mode Output Disable Time Output Enable Time TRANSFER CHARACTERISTICS Slew Rate Open Loop Voltage Gain 2 Settling Time 0.1% 2 AV=1 VOUT= 50Vp-p RL=8 VOUT=25V RL=1K AV=10 50V Step 4 90 10 98 15 88 8 98 18 V/S dB S IOUT=0.6A 2 IOUT=3.0A DC=Continuous VES High- Output Enabled E/S Open or High VES Low- Output Disabled E/S Forced Low 4 4 4 4 4 27 25.5 3 -27.5 28 26 1 3 -29 26 24 3 -27.5 28 26 1 3 -29 V V A V V S S VIN=0V VIN=0V VIN=0V VIN=OV f=DC f=DC f=1KHZ 1 1 1 1 1 80 2 30 5 10 6 95 90
7
Test Conditions 1
Group A Subgroup -
MSK181H/E Min. 4 Typ. 17 17 6 Max. 30 20 20 10 50 Min. 4 75 -
MSK181 Typ. 17 6 2 30 100 5 10 7 6 95 90 Max. 30 23 15 750 75 Units V mA mA mA mV V/C
VIN=0V Shutdown Mode VIN=0V
1 2,3 -
100 500
Common Mode Rejection Ratio 2 (-VCC)-0.1 VIN (+VCC)-3V
NOTES:
1 2 3 4 5 Unless otherwise specified VCC= 30VDC and E/S pin is open. Devices shall be capable of meeting the parameter, but need not to be tested. Typical parameters are for reference only. Industrial grade and 'E' suffix devices shall be tested to subgroups 1 and 4 unless otherwise specified. Military grade devices ('H' suffix) shall be 100% tested to subgroups 1,2,3 and 4. Subgroup 1,4 TA=TC=+25C Subgroup 2 TA=TC=+125C Subgroup 3 TA=TC=-55C
2
PRELIMINARY Rev. C 8/01

VCC IOUT VIND VIN TJ
Total Supply Voltage 60V Output Current (within S.O.A.) 5A Input Voltage (Differential) 29.5V Input Voltage (Common Mode) +27V/-29V Junction Temperature Internal Protection (See Application Note)
TST Storage Temperature Range TLD Lead Temperature Range (10 seconds) TC Case Operating Temperature (MSK181H/E) (MSK181) RTH Thermal Resistance Junction to Case
-65C to +150C 300C
nA nA
pF dB nV/HZ
APPLICATION NOTES POWER SUPPLIES:
The MSK 181 maximum total supply voltage is specified as 60V. However, dual and unbalanced power supply operation is permissible as long as total supply voltage does not exceed 60V.
THERMAL PROTECTION:
The MSK 181 is equipped with thermal protection circuitry that protects the amplifier from damage caused by excessive junction temperature. The output is disabled when the junction temperature reaches approximately 160C. After the junction temperature cools to approximately 140C, the output is again enabled. The thermal protection may cycle on and off depending on the output load and signal conditions; this may have an undesirable effect on the load. It should be noted that even though this internal protection circuitry does protect against overload conditions, it does not take the place of proper heat sinking. For reliable operation, junction temperature should be limited to 150C, maximum.
POWER SUPPLY BYPASSING:
Power supply terminals must be effectively decoupled with a high and low frequency bypass circuit to avoid power supply induced oscillation. An effective decoupling scheme consists of a 0.1F ceramic capacitor in parallel with a 10F tantalum capacitor for each power supply pin to ground. In addition, it is recommended that a 0.01F capacitor be placed between Vcc as close to the MSK 181 as possible.
ENABLE/STATUS PIN:
This pin actually has a dual function. First, when the pin is forced low, the output stage is disabled. Second, it can be monitored to determine if the device is in thermal shutdown. These functions can be used on the same device with either single or dual supplies. For normal operation, the E/S pin must be left open or pulled at least 2.4 volts above the negative rail. In noisy applications, a small value capacitor between the E/S pin and -Vcc may be required. To disable the output, the user must pull the E/S pin low, no greater than 0.8V above -Vcc. To once again enable the device, the E/S pin must be brought at least 2.4 volts above -Vcc or disconnected. It should be noted that when the E/S pin is high, the internal thermal shutdown is still active. If the E/S pin is used to monitor thermal shutdown, during normal operation the voltage on the E/S pin is typically 3.5V above -Vcc. Once shutdown has occurred this voltage will drop to approximately 350mV above -Vcc.
CURRENT LIMIT:
The MSK 181 offers accurate, user-selectable current limit. Unlike typical designs that use a power resistor in series with the output to sense load, the MSK 181 senses the load indirectly and therefore does not require a resistor to handle the full output current. Current limit is selected by controlling the input to the ILIM pin. The easiest method is to use a resistor or potentiometer connected between-Vcc and the ILIM pin. Use the following equation to select proper resistor value: 71,250 -13.75K Rcc= ILIM A low level control signal (0-330A) can also be used to control the current level digitally. If the pin is left open, the current is programmed to OA, while connecting ILIM directly to -Vcc sets the output current to it's maximum, typically 5A.
SAFE OPERATING AREA:
The safe operating area curve is a graphical representation of the power handling capability of the amplifier under various conditions. Power dissipation of the device is equal to the product of the voltage across the output transistor times the output current. As can be seen in the curve, safe operating current decreases with an increase in temperature as well as an increase in the voltage across the output transistor. Therefore, for maximum amplifier performance it is important to keep case temperature as low as possible and to keep Vcc as close to the output rail as achievable.
For normal operation output compensation is not typically required. However, if the MSK 181 is intended to be driven into current limit the user may find that an R/C network is required. A snubber network from the output to ground will provide stability. If driving large capacitive or inductive loads, a snubber network will also enhance stability. Typically 3 to 10 in series with 0.01F is acceptable.
COMPENSATION:
TYPICAL CONNECTION DIAGRAM 3 PRELIMINARY Rev. C 8/01
APPLICATION NOTES cont.
Figure 2 Output Disable with a Single Supply
Figure 1 Adjustable Current Limit
Figure 4 Motor Drive Circuit
Figure 3 Thermal Shutdown Status With a Single Supply
Figure 6 Parallel Output For Increased Output Current Figure 5 Voltage Source
4 PRELIMINARY Rev. C 8/01
TYPICAL PERFORMANCE CURVES
5
PRELIMINARY Rev. C 8/01
MECHANICAL SPECIFICATIONS
MSK181
MSK181Z
ESD TRIANGLE INDICATES PIN 1. ALL DIMENSIONS ARE 0.010 INCHES UNLESS OTHERWISE LABELED.
ORDERING INFORMATION
MSK181 H Z
PACKAGE STYLE SCREENING
BLANK= NO TAB; Z= Z TAB BLANK = INDUSTRIAL; E = EXTENDED RELIABILITY
H = MIL-PRF-38534
GENERAL PART NUMBER
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.
M.S. Kennedy Corp.
6
PRELIMINARY Rev. C 8/01

▲Up To Search▲

Price & Availability of MSK181Z

	To Download MSK181Z Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .