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LT6108AIMS8-2#TRPBF

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24P25-P27P28-P30
LT6108-1/LT6108-2
4
610812fa
ELECTRICAL CHARACTERISTICS
The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. V
+
= 12V, V
PULLUP
= V
+
, V
EN
= V
EN/RST
= 2.7V, R
IN
= 100Ω,
R
OUT
= R1 + R2 = 10k, gain = 100, R
C
= 25.5k, C
L
= C
LC
= 2pF, unless otherwise noted. (See Figure 3)
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
+
Supply Voltage Range
l
2.7 60 V
I
S
Supply Current (Note 4) V
+
= 2.7V, R
IN
= 1k, V
SENSE
= 5mV 450 µA
V
+
= 60V, R
IN
= 1k, V
SENSE
= 5mV
l
550 650
950
µA
µA
Supply Current in Shutdown V
+
= 2.7V, V
EN/RST
= 0V, R
IN
= 1k, V
SENSE
= 0.5V
l
3 5
7
µA
µA
V
+
= 60V, V
EN/RST
= 0V, R
IN
= 1k, V
SENSE
= 0.5V
l
7 11
13
µA
µA
EN/RST Pin Current V
EN/RST
= 0V, V
+
= 60V (LT6108-1 Only) –200 nA
EN Pin Current V
EN
= 0V, V
+
= 60V (LT6108-2 Only) –100 nA
V
IH
EN/RST Pin Input High V
+
= 2.7V to 60V (LT6108-1 Only)
l
1.9 V
V
IL
EN/RST Pin Input Low V
+
= 2.7V to 60V (LT6108-1 Only)
l
0.8 V
V
IH
EN Pin Input High V
+
= 2.7V to 60V (LT6108-2 Only)
l
1.9 V
V
IL
EN Pin Input Low V
+
= 2.7V to 60V (LT6108-2 Only)
l
0.8 V
Current Sense Amplifier
V
OS
Input Offset Voltage V
SENSE
= 5mV, LT6108A
V
SENSE
= 5mV, LT6108
V
SENSE
= 5mV, LT6108A
V
SENSE
= 5mV, LT6108
l
l
–125
–350
–250
–450
125
350
250
450
µV
µV
µV
µV
∆V
OS
/∆T
Input Offset Voltage Drift V
SENSE
= 5mV
l
±0.8 µV/°C
I
B
Input Bias Current
(SENSELO, SENSEHI)
V
+
= 2.7V to 60V
l
60 300
350
nA
nA
I
OS
Input Offset Current V
+
= 2.7V to 60V ±5 nA
I
OUTA
Output Current (Note 5)
l
1 mA
PSRR Power Supply Rejection Ratio
(Note 6)
V
+
= 2.7V to 60V
l
120
114
127 dB
dB
CMRR Common Mode Rejection Ratio V
+
= 36V, V
SENSE
= 5mV, V
ICM
= 2.7V to 36V 125 dB
V
+
= 60V, V
SENSE
= 5mV, V
ICM
= 27V to 60V
l
110
103
125 dB
dB
V
SENSE(MAX)
Full-Scale Input Sense Voltage
(Note 5)
R
IN
= 500Ω
l
500 mV
Gain Error (Note 7) V
+
= 2.7V to 12V
V
+
= 12V to 60V, V
SENSE
= 5mV to 100mV, MS8 Package
V
+
= 12V to 60V, V
SENSE
= 5mV to 100mV, DFN Package
l
l
–0.2
–0.3
–0.08
0
0
%
%
%
SENSELO Voltage (Note 8) V
+
= 2.7V, V
SENSE
= 100mV, R
OUT
= 2k
V
+
= 60V, V
SENSE
= 100mV
l
l
2.5
27
V
V
Output Swing High (V
+
to V
OUTA
) V
+
= 2.7V, V
SENSE
= 27mV
l
0.2 V
V
+
= 12V, V
SENSE
= 120mV
l
0.5 V
BW Signal Bandwidth I
OUT
= 1mA
I
OUT
= 100µA
1
140
MHz
kHz
t
r
Input Step Response (to 50% of
Final Output Voltage)
V
+
= 2.7V, V
SENSE
= 24mV Step, Output Rising Edge
V
+
= 12V to 60V, V
SENSE
= 100mV Step, Output Rising Edge
500
500
ns
ns
t
SETTLE
Settling Time to 1% V
SENSE
= 10mV to 100mV, R
OUT
= 2k 2 µs
LT6108-1/LT6108-2
5
610812fa
ELECTRICAL CHARACTERISTICS
The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. V
+
= 12V, V
PULLUP
= V
+
, V
EN
= V
EN/RST
= 2.7V, R
IN
= 100Ω,
R
OUT
= R1 + R2 = 10k, gain = 100, R
C
= 25.5k, C
L
= C
LC
= 2pF, unless otherwise noted. (See Figure 3)
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
Reference and Comparator
V
TH(R)
(Note 9)
Rising Input Threshold Voltage V
+
= 2.7V to 60V, LT6108A
V
+
= 2.7V to 60V, LT6108
l
l
395
392
400
400
405
408
mV
mV
V
HYS
V
HYS
= V
TH(R)
– V
TH(F)
V
+
= 2.7V to 60V 3 10 15 mV
Comparator Input Bias Current V
INC
= 0V, V
+
= 60V
l
–50 nA
V
OL
Output Low Voltage I
OUTC
= 500µA, V
+
= 2.7V
l
60 150
220
mV
mV
High to Low Propagation Delay 5mV Overdrive
100mV Overdrive
3
0.5
µs
µs
Output Fall Time 0.08 µs
t
RESET
Reset Time LT6108-1 Only 0.5 µs
t
RPW
Valid RST Pulse Width LT6108-1 Only
l
2 15 µs
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2: Input and output pins have ESD diodes connected to ground. The
SENSEHI and SENSELO pins have additional current handling capability
specified as SENSEHI, SENSELO Input Current.
Note 3: The LT6108I is guaranteed to meet specified performance from
–40°C to 85°C. LT6108H is guaranteed to meet specified performance
from –40°C to 125°C.
Note 4: Supply current is specified with the comparator output high. When
the comparator output goes low the supply current will increase by 75µA
typically.
Note 5: The full-scale input sense voltage and the maximum output
current must be considered to achieve the specified performance.
Note 6: Supply voltage and input common mode voltage are varied while
amplifier input offset voltage is monitored.
Note 7: The specified gain error does not include the effect of external
resistors R
IN
and R
OUT
. Although gain error is only guaranteed between
12V and 60V, similar performance is expected for V
+
< 12V, as well.
Note 8: Refer to SENSELO, SENSEHI Range in the Applications
Information section for more information.
Note 9: The input threshold voltage which causes the output voltage of the
comparator to transition from high to low is specified. The input voltage
which causes the comparator output to transition from low to high is
the magnitude of the difference between the specified threshold and the
hysteresis.
LT6108-1/LT6108-2
6
610812fa
TYPICAL PERFORMANCE CHARACTERISTICS
Input Offset Voltage
vs Temperature
Amplifier Offset Voltage
vs Supply Voltage Offset Voltage Drift Distribution
Amplifier Gain Error
vs Temperature
Amplifier Gain Error Distribution
Supply Current vs Supply Voltage Start-Up Supply Current Enable/Disable Response
Performance characteristics taken at T
A
= 25°C,
V
+
= 12V, V
PULLUP
= V
+
, V
EN
= V
EN/RST
= 2.7V, R
IN
= 100Ω, R
OUT
= R1 + R2 = 10k, gain = 100, R
C
= 25.5k, C
L
= C
LC
= 2pF, unless
otherwise noted. (See Figure 3)
SUPPLY VOLTAGE (V)
0
0
SUPPLY CURRENT (µA)
100
200
300
400
600
10
20 30 40
610812 G01
50 60
500
100µs/DIV
V
EN/RST
2V/DIV
I
S
500µA/DIV
0V
0µA
610812 G03
TEMPERATURE (°C)
–40
INPUT OFFSET VOLTAGE (µV)
300
200
100
0
–200
–100
–300
80
610812 G04
–10 20 50 12511065–25 5 35 95
5 TYPICAL UNITS
SUPPLY VOLTAGE (V)
0
–100
OFFSET VOLTAGE (µV)
–60
–20
20
10
20
30 40
610812 G05
50
60
100
–80
–40
0
40
80
60
5 TYPICAL UNITS
TEMPERATURE (°C)
–50
–0.18
–016
–0.12
–0.10
–0.08
–0.04
0
50
75
610812 G06
–0.14
–0.02
0
–0.06
–25
25
100
125
V
SENSE
= 5mV TO 100mV
R
IN
= 1k
R
IN
= 100Ω
0V
V
+
5V/DIV
0µA
I
S
500µA/DIV
10µs/DIV
610812 G02
OFFSET VOLTAGE DRIFT (µV/°C)
0
PERCENTAGE OF UNITS (%)
2
4
6
8
12
–1–1.5–2 –0.5 0 0.5 1 1.5 2
610812 G38
10
GAIN ERROR (%)
0
PERCENTAGE OF UNITS (%)
5
15
20
25
V
SENSE
= 5mV TO 100mV
–0.056 –0.068
610812 G07
10
–0.048 –0.052
–0.060
–0.064
Amplifier Output Swing
vs Temperature
TEMPERATURE (°C)
–50
0
V
+
– V
OUTA
(V)
0.05
0.15
0.20
0.25
0.50
0.35
0
50
75
610812 G18
0.10
0.40
0.45
0.30
–25
25
100
125
V
+
= 12V
V
SENSE
= 120mV
V
+
= 2.7V
V
SENSE
= 27mV
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24P25-P27P28-P30

LT6108AIMS8-2#TRPBF

Mfr. #:
Buy LT6108AIMS8-2#TRPBF
Manufacturer:
Analog Devices Inc.
Description:
Current Sense Amplifiers High Side Current Sense Amplifier with Reference and Comparators
Lifecycle:
New from this manufacturer.
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