MIL-PRF-38534 & 38535 CERTIFIED FACILITY
M.S.KENNEDY CORP.
RAD HARD QUAD PRECISION
RAIL TO RAIL
CURRENT SENSE AMP
496RH
FEATURES:
Manufactured using
RH6105 Dice
Radiation Hardened to 100 Krad(Si) (Method 1019.7 Condition A)
Low Dose Rate Hardened to 50 Krad(Si) (Method 1019.7 Condition D)
Neutron Tested to 5X1011 n/cm² (Method 1017.2)
Very Wide Input Common Mode Range
Extends 44V Above V- (Independent of V+)
Extends -0.3V Below VWide Power Supply Range: 2.85V to 36V
Input Offset Voltage: 400μV Maximum
Gain Accuracy: 1% Max
Gain Configurable with External Resistors
Operating Current: 195μA typ. per Amp
Slew Rate: 2V/μs
Sense Input Current When Powered Down: <1μA
Full-Scale Output Current: 1mA Minimum
Non-Rad Hard EDU's Available
DESCRIPTION:
The MSK496RH is a radiation hardened quad precision micropower current sense amplifier with a very wide input common
mode range. With Over-the-Top® Technology, the MSK496RH is capable of sensing in high side or low side applications.This
combined with external gain setting, and common mode and power supply rejection in excess of 100dB, make the MSK496RH
well suited for a variety of current sensing applications. The MSK496RH is hermetically sealed in a 16 pin flat pack, and is available
with straight or gull wing lead form.
EQUIVALENT SCHEMATIC
PIN-OUT INFORMATION
TYPICAL APPLICATIONS
1
2
3
4
5
6
7
8
High Side or Low Side Current Sensing
Current Monitoring on Positive or Negative Supply Voltages
Battery Monitoring
Fuse/MOSFET Monitoring
Power Management
1
VOUT 1
+IN 1
-IN 1
VVOUT 2
CASE
+IN 2
-IN 2
16
15
14
13
12
11
10
9
-IN 4
+IN 4
CASE
VOUT 4
V+
-IN 3
+IN 3
VOUT 3
8548-89 Rev. I 10/14
ABSOLUTE MAXIMUM RATINGS
Input Voltage (+IN, -IN to V-)
Differential Input Voltage
Total Supply Voltage from VOutput Short Circuit Duration
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-9.5V to 44V
44V
36V
Indefinite 4
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9
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TST
TLD
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12
Storage Temperature Range
Lead Temperature Range
(10 Seconds)
Junction Temperature
Case Operating Temperature Range
MSK496KRH/HRH
MSK496RH
MSK496EDU 11
ESD Rating
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TJ
TC
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-65°C to +150°C
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300°C
150°C
-55°C to+125°C
-40°C to +85°C
-40°C to +85°C
Class 1B
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ELECTRICAL SPECIFICATIONS
NOTES:
1
2
3
4
5
6
7
8
9
10
11
12
Unless otherwise specified; V+=12V, V-=0V, VS+=12V, RIN1=RIN2 =100Ω, ROUT=5K(AV = 50), VSENSE=(VS+)-(VS-).
Guaranteed by design but not tested.
Typical parameters are representative of device performance but are for reference only.
A heat sink may be required to keep the junction temperature below absolute maximum ratings.
Industrial grade devices shall be tested to subgroup 1 and 4 unless otherwise specified.
Military grade devices ("H" and "K" suffix) shall be 100% tested to subgroups 1,2,3, and 4
Subgroup 5 & 6 testing available upon request.
Subgroup 1,4
TC = +25°C
Subgroup 2,5
TC = +125°C
Subgroup 3,6
TC = -55°C
Continuous operation at or above absolute maximum ratings may adversely affect the device performance and/or life cycle.
Pre and post irradiation limits at 25°C, up to 100 Krad(Si) TID (Condition A) and 50 Krad(Si) TID (Condition D),
are identical unless otherwise specified.
MSK496EDU does not use Rad Hard die, post irradiation specifications are not applicable.
Internal solder reflow temperature is 180°C, do not exceed.
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8548-89 Rev. I 10/14
APPLICATION NOTES
PIN FUNCTIONS
ADDITIONAL APPLICATION INFORMATION
-INx- The -IN pin is the negative input terminal of the sense For additional applications information, please reference Linear
amplifier. Voltages as high as 44V can be applied to the pin, Technology Corporation's® LT6105 data sheet.
relative to the negative supply pin V-.
HIGH VOLTAGE SENSING
+INx - The +IN pin is the positive input terminal of the sense
amplifier. Voltages as high as 44V can be applied to the pin,
relative to the negative supply pin V-.
For high voltage applications, the MSK496RH can be used with
external MOSFETs. The MOSFETs protect the device from the
full potential of the high voltage supply. The high voltage supply
is the positive rail of the device, and the Zener voltage minus the
+
V+ - The V pin is the positive power supply for all amplifiers. VGS(on) potential of Q2 determines the negative voltage rail for the
Operational currents are sourced from this pin independent of device; (V-)=(V+)-(VZ-VGS). The device can safely sense current
from 0.3V below the negative rail up to 44V above it indepenthe voltages on the -IN and +IN pins.
dent of high voltage supply, and deliver a ground referenced sigV- - The V- pin is the negative power supply for all amplifiers. nal via Q1. The values in the application circuit are provided for
Connect to the negative supply voltage or circuit ground for reference. They may need to be adjusted based on specific application requirements.
single supply opperation.
VOUTx - The VOUT pin is the output of the amplifier. The voltage at the output is a function of both the input differential
(VSENSE± VOS), and the voltage gain ROUT/RIN1, for RIN1= RIN2.
(See typical application ckt for more detail)
HIGH VOLTAGE SIMPLE CURRENT MONITOR
VOUT=ROUT/RIN x (VSENSE ± VOS)
Set RIN1=RIN2 for best accuracy
CASE - Pins 6 and 14 provide an electrical connection to the
device package only. These pins are isolated from the internal
circuit. Tie to a low impedance source or system ground to minimize coupling between amplifiers.
SENSE RESISTOR
Choose a RSENSE resistor value just large enough to cover the
application dynamic range to minimize power dissipation losses.
The low 100μV typical offset voltage helps to maintain high
resolution while minimizing power dissipation.
Kelvin connection of the input resistors to the sense resistor is
recommended to minimize error in high current applications.
TYPICAL APPLICATION CKT
RADIATION TEST PERFORMANCE
Radiation performance curves have been generated for all radiation testing performed by MS Kennedy. These curves show performance trends throughout each test process and are located in
the MSK196RH radiation test report. The complete radiation test
report is available in the RAD HARD PRODUCTS section on the
MSK website.
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TYPICAL PERFORMANCE CURVES
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MECHANICAL SPECIFICATIONS
ESD TRIANGLE INDICATES PIN 1
WEIGHT=1.5 GRAMS TYPICAL
ALL DIMENSIONS ARE SPECIFIED IN INCHES
ORDERING INFORMATION
MSK496 K RH
LEAD CONFIGURATIONS
BLANK= STRAIGHT
RADIATION HARDENED
SCREENING
BLANK= INDUSTRIAL; H=MIL-PRF-38534 CLASS H;
K=MIL-PRF-38534 CLASS K
GENERAL PART NUMBER
The above example is a Class K screened device with straight leads.
For Non-Rad Hard engineering units, order MSK496EDU.
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8548-89 Rev. I 10/14
MECHANICAL SPECIFICATIONS
ESD TRIANGLE INDICATES PIN 1
WEIGHT=1.5 GRAMS TYPICAL
ALL DIMENSIONS ARE SPECIFIED IN INCHES
ORDERING INFORMATION
MSK496 K RH G
LEAD CONFIGURATIONS
G=GULL WING
RADIATION HARDENED
SCREENING
BLANK= INDUSTRIAL; H=MIL-PRF-38534 CLASS H;
K=MIL-PRF-38534 CLASS K
GENERAL PART NUMBER
The above example is a Class K screened device with gull wing lead form.
For Non-Rad Hard engineering units, order MSK496EDUG.
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8548-89 Rev. I 10/14
REVISION HISTORY
M.S. Kennedy Corp.
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.
Please visit our website for the most recent revision of this datasheet.
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