Accurate Current Measurement Simplified

Accurate Current
Measurement Simplified
TO LOAD
RSENSE
VS–
VS+
RIN2
RIN1
+
5V
C2
0.1µF
DC SOURCE
(≤ 44V)
+IN
–IN
V+
C1
0.1µF
+
–
L
RH6105
V–
OUT
OUTPUT
ROUT
The RH6105 is a precision current sense amplifier that is robust and easy to use. It has a differential input swing capability to ±44V,
allowing direct sensing of fuse or MOSFET drops while the input common mode range extends 44V above and 0.3V below V–.
The ability to take common mode down to ground enables low side current sensing and monitoring of negative supply rails. In the
absence of power the inputs remain high impedance and continue to present a benign load to the system, even when the circuit is
intentionally powered down on a redundant or backup bus.
Features †
Radiation Performance*
nn
nn
nn
nn
nn
nn
nn
nn
nn
Processed in Compliance with Linear’s
Certified MIL-PRF-38535 Class V Flow*
Very Wide, Over-The-Top®, Input Common
Mode Range
nn Extends 44V Above V– (Independent of V+)
nn Extends –0.3V Below V–
Wide Power Supply Range: 2.85V to 36V
Input Offset Voltage: 400μV Maximum
Gain Accuracy: 1% Maximum
Resistors Selectable Gain
Typical Operating Current: 195μA
Slew Rate: 2V/μs
nn
Total Ionizing Dose (TID) Tolerance, per TM1019.8, MIL-STD-883:
nn 200kRad (Si), per Condition A at 50Rads (Si)/sec
nn 50kRad (Si), per Condition D at 10mRads (Si)/sec
nn ELDRS Pass 50kRad (Si)
Displacement Damage Defect (DDD) Up to 1E12 Neutrons/cm2
Availability
nn
nn
nn
MSK196RH: Precision Current Sense Amplifier, FP-10 (MIL-PRF-38535 Class V)
MSK496RH: Quad Precision Current Sense Amplifier, FP-16 (MIL-PRF-38534 Class K**)
MSK6000RH: Dual High Side Driver with Current Sense, FP-26 (MIL-PRF-38534 Class K)
†Parametric
values for MSK196RH.
* Radiation testing and Qualification completed on the packaging vendor’s assembled units.
** Contact MSK for qualification status.
L, LT, LTC, LTM, Linear Technology, the Linear logo and
Over-The-Top are registered trademarks and UltraFast is a
trademark of Linear Technology Corporation. All other trademarks
are the property of their respective owners.
Radiation Hardened Product Range
AMPLIFIERS
Part Type
Description
RH101A
Operational Amplifier
RH1078
Dual Micropower Precision Op Amp, 120µV Offset
RH07
Precision Operational Amplifier
RH108A
General Purpose Operational Amplifier
RH1013
Dual Precision Operational Amplifier, 300µV Offset
RH1014
Quad Precision Operational Amplifier
RH6105
Rail-to-Rail Current Sense Amplifier
RH27A
Precision Operational Amplifier, 35μV Offset
RH27
Precision Operational Amplifier, 55µV and 100μV Offset
RH1056A
Precision High Speed JFET Input Operational Amplifier
RH1056
Precision High Speed JFET Input Operational Amplifier
RH1498
Dual 6V/µs Rail-to-Rail Input/Output Precision C-Load
RH1499
Quad 6V/µs Rail-to-Rail Input/Output Precision C-Load
RH118
Precision/High Speed Operational Amplifier
RH1128
Ultralow Noise Precision Op Amp, AV ≥ 1
RH37
Precision 45MHz Operational Amplifier
RH1028
Ultralow Noise Precision Op Amp, AV ≥ 2 or AV ≤ –1
RH1814
Dual 3mA, 100MHz, 750V/µs Operational Amplifier
RH1814
Quad 3mA, 100MHz, 750V/µs Operational Amplifier
165MHz, Rail-to-Rail I/O, 0.95nV/√Hz Low Noise, Op Amp
RH6200
COMPARATORS
Part Type
Description
RH1016
UltraFast™ 10ns Precision Comparator
RH119
Dual High Performance Comparator
RH1011
Precision Voltage Comparator
RH111
Voltage Comparator, (Please Use RH1011 for New Designs)
VOLTAGE REFERENCES
Part Type
Description
RH1034-1.2
1.2V Micropower Dual Reference with 7V Aux
5962R8961002 2.5V Precision Reference - SMD Version of RH1009
RH1009
2.5V Precision Reference - SCD Version
RH1021-5
5V Precision Reference
RH129A
6.9V Precision Reference
RH1021-7
7V Precision Reference
RH1021-10
10V Precision Reference
DATA CONVERTORS
Part Type
Description
LTC1604
16-Bit, 333ksps Sampling ADC with Shutdown
RH1419
14-Bit, 800ksps Sampling ADC with Shutdown
VOLTAGE REGULATOR DRIVER
Part Type
Description
RH1573
10V, LDO Regulator Driver, Up to 5A with External PNP
POSITIVE LINEAR REGULATORS
Part Type
Description
RH1086H
25V, 0.5A Positive Adjustable Voltage LDO Regulator
RH117H
40V, 0.5A Positive Adjustable Regulator
RH3080
40V, 0.9A Adjustable, Single Resistor LDO Regulator
Typical GBW (MHz)
0.1
0.2
0.4
0.5
0.5
0.5
1.0
5.0
5.0
6.5
6.5
10
10
15
20
45
75
100
100
165
Typical tPD (nS)
10
80
150
200
Package
DICE, TO-5, DIP-8, FP-10
DICE, TO-5, DIP-8, FP-10
DICE, TO-5, DIP-8, FP-10
DICE, TO-5, DIP-8, FP-10
DICE, TO-5, DIP-8, FP-10
DIP-14, FP-14
DICE
FP-10
DICE, TO-5, DIP-8, FP-10
TO-5, FP-10
DICE
DICE, FP-10
FP-14
TO-5, DIP-8, FP-10
DICE, FP-10
DICE, TO-5, DIP-8, FP-10
DICE, FP-10
DICE
FP-14
DICE, FP-10
Package
TO-46, FP-10
TO-46, FP-10
DICE, TO-46, FP-10
DICE, TO-5, FP-10
TO-46
TO-5
DICE, TO-5, FP-10
Partner Products
FS (ksps)
333
800
Package
SSOP-36
DICE
Partner Products
Accuracy (%)
1.0
Package
DICE
Partner Products
MSK5800, MSK5805, MSK5810, MSK5820, MSK5821, MSK5822, MSK5823,
MSK5824, MSK5825, MSK5826, MSK5950
IOUT (A)
0.5
0.5
0.9
Package
DICE, TO-39
DICE, TO-39
DICE
1.0
1.5
DICE
DICE, TO3
RH117K
40V, 1.5A Positive Adjustable Regulator
1.5
DICE, TO3
RH3083
RH1085
18V, 2.8A Adjustable, Single Resistor LDO Regulator
30V, 3A Positive Adjustable Voltage LDO Regulator
2.8
3.0
DICE
DICE, TO3
RH1084
25V, 5A Positive Adjustable Voltage LDO Regulator
5.0
DICE
IOUT (A)
0.5
1.5
Package
DICE, TO-39
DICE, TO3
3.0
DICE, TO3
35V, 3A Negative LDO with Adjustable Current Limit
MSK198RHL
T.C. Max ppm/ºC
60
35
35
5-20
10
5-20
5-20
20V, 1A Rugged, Low Noise, Adjustable LDO Regulator with Shutdown
25V, 1.5A Positive Adjustable Voltage LDO Regulator
RH1185A
MSK196, MSK496 (Quad), MSK6000
Package
Partner Products
DICE, FP-10
DICE, TO-5, DIP-8, FP-10
DICE, TO-5, DIP-8, FP-10
TO-5, DIP-8, FP-10
RH1965
RH1086K
NEGATIVE LINEAR REGULATORS
Part Type
Description
RH137H
30V, 0.5A Negative Adjustable Voltage Regulator
RH137K
30V, 1.5A Negative Adjustable Voltage Regulator
Partner Products
MSK0041, MSK106
SWITCHING REGULATORS AND CONTROLLERS
Part Type
Description
IOUT (A)
RH1959
16V, 4.5A, 500kHz Step-Down Switching Regulator
4.5
RH3845
60V Synchronous Step-Down Controller, 100kHz to 500kHz
10
RHK3845
RH3845 Controller + Two RH411 Power NMOS FETs
10
Partner Products:
MSK Prefix - ANAREN INC. (MS KENNEDY CORP.), www.mskennedy.com
VRG Prefix - COBHAM plc (AEROFLEX MICROELECTRONIC SOLUTIONS), www.aeroflex.com/ams
Package
DICE
DICE
3 x DICE
MSK109, MSK110 (Dual)
RAD1419
Partner Products
MSK5976, MSK5977, MSK5978, VRG8666, Dual Regulators: MSK5953,
VRG8667, VRG8668
MSK5965
MSK5970, VRG8662, Dual Regulators: VRG8657, VRG8658, Positive +
Negative Regulators: VRG8651, VRG8652
MSK5972, VRG8660, Dual Regulators: VRG8607, VRG8608, Positive +
Negative Regulators: MSK5911, MSK5912, MSK5913, MSK5914, MSK5915,
MSK5916, MSK5917, MSK5918, MSK5919, VRG8601, VRG8602
MSK5983, MSK5984, MSK5985, MSK5986, VRG8669, VRG8697, VRG8698
MSK5971, Positive + Negative Regulators: MSK5930, MSK5931, MSK5932,
MSK5933, MSK5934, MSK5935, MSK5936, MSK5937, MSK5938, MSK5939
VRG8684, Dual Regulators: VRG8687, VRG8688, Positive + Negative
Regulators: VRG8653, VRG8654
Partner Products
MSK5973, VRG8661, Dual Regulators: VRG8609, VRG8610, Positive +
Negative Regulators: MSK5911, MSK5912, MSK5913, MSK5914, MSK5915,
MSK5916, MSK5917, MSK5918, MSK5919, VRG8601, VRG8602
MSK5940, VRG8663, Positive + Negative Regulators: MSK5930, MSK5931,
MSK5932, MSK5933, MSK5934, MSK5935, MSK5936, MSK5937, MSK5938,
MSK5939, VRG8651, VRG8652, VRG8653, VRG8654
Partner Products
MSK5044, MSK5048, MSK5052, MSK5059
MSK5055 Switching Controller (Monolithic)
MSK5063 Switching Regulator Module
www.linear.com/RH6105 n 1-800-4-LINEAR
0615B
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