LTC6102HVCDD(RevB) 查看數據表（PDF） - Linear Technology
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LTC6102HVCDD Datasheet PDF : 20 Pages
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LTC6102/LTC6102HV
Precision Zero Drift
Current Sense Amplifier
FEATURES
n Supply Range:
4V to 60V, 70V Absolute Maximum (LTC6102)
5V to 100V, 105V Absolute Maximum (LTC6102HV)
n ±10μV Input Offset Maximum
n ±50nV/°C Input Offset Drift Maximum
n Fast Response: 1μs Step Response
n Gain Configurable with Two Resistors
n Low Input Bias Current: 3nA Maximum
n PSRR 130dB Minimum
n Output Currents up to 1mA
n Operating Temperature Range: –40°C to 125°C
n Available in 8-Lead MSOP and 3mm × 3mm
DFN Packages
APPLICATIONS
n Current Shunt Measurement
n Battery Monitoring
n Remote Sensing
n Power Management
n Load Protection
n Motor Control
n Automotive Controls
L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
DESCRIPTION
The LTC®6102/LTC6102HV are versatile, high voltage,
high-side current sense amplifiers. Their high supply
voltage rating allows their use in almost any application,
while the low drift and offset ensure accuracy across a
wide range of operating conditions.
The LTC6102/LTC6102HV monitor current via the voltage
across an external sense resistor (shunt resistor). Internal
circuitry converts input voltage to output current, allowing
a small sense signal on a large common mode voltage to
be translated to a ground-referred signal. Low DC offset
allows the use of very low shunt resistor values and large
gain-setting resistors. As a result, power loss in the shunt
is reduced.
The wide operating supply and high accuracy make the
LTC6102/LTC6102HV ideal for a large array of applications
from automotive to industrial and power management. A
maximum input sense voltage of 2V allows a wide range
of currents and voltages to be monitored. Fast response
makes the LTC6102/LTC6102HV the perfect choice for load
current warnings and shutoff protection control.
The LTC6102/LTC6102HV are available in 8-lead MSOP
and 3mm × 3mm DFN packages.
TYPICAL APPLICATION
10A Current Sense with 10mA Resolution and 100mW
Maximum Dissipation
ILOAD
VSENSE
+IN
L
O
V–
A
D
1mΩ*
RIN
20Ω
–INS
–INF
V+
VREG
5V TO 105V
0.1μF
5V
1μF
LTC6102HV
OUT
VOUT
ROUT
4.99k
LTC2433-1
TO μP
VOUT
=
ROUT
RIN
•
VSENSE
=
249.5VSENSE
6102 TA01
*PROPER SHUNT SELECTION COULD ALLOW
MONITORING OF CURRENTS IN EXCESS OF 1000A
Dynamic Range vs Maximum Power
Dissipation in RSENSE at 10A
110
RSENSE = 100mΩ
100
Max VSENSE = 1V
90
80
70 RSENSE = 10μΩ
Max VSENSE = 100μV
60
50
DYNAMIC RANGE RELATIVE
40
TO 10μV MINIMUM VSENSE
ISENSE = 10A
30
20
0.001
0.01
0.1
1
10
MAXIMUM POWER DISSIPATION (W)
6102 TA01b
6102fb
1
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