FEATURES
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LTC6101/LTC6101HV
High Voltage,
High-Side Current Sense
Amplifier in SOT-23
DESCRIPTION
The LTC
®
6101/LTC6101HV are versatile, high voltage, high
side current sense amplifiers. Design flexibility is provided
by the excellent device characteristics; 300μV Max offset
and only 375μA (typical at 60V) of current consumption.
The LTC6101 operates on supplies from 4V to 60V and
LTC6101HV operates on supplies from 5V to 100V.
The LTC6101 monitors current via the voltage across an
external sense resistor (shunt resistor). Internal circuitry
converts input voltage to output current, allowing for a
small sense signal on a high common mode voltage to
be translated into a ground referenced signal. Low DC
offset allows the use of a small shunt resistor and large
gain-setting resistors. As a result, power loss in the shunt
is reduced.
The wide operating supply range and high accuracy make
the LTC6101 ideal for a large array of applications from
automotive to industrial and power management. A maxi-
mum input sense voltage of 500mV allows a wide range
of currents to be monitored. The fast response makes the
LTC6101 the perfect choice for load current warnings and
shutoff protection control. With very low supply current,
the LTC6101 is suitable for power sensitive applications.
The LTC6101 is available in 5-lead SOT-23 and 8-lead
MSOP packages.
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Supply Range:
5V to 100V, 105V Absolute Maximum (LTC6101HV)
4V to 60V, 70V Absolute Maximum (LTC6101)
Low Offset Voltage: 300μV Max
Fast Response: 1μs Response Time (0V to 2.5V on
a 5V Output Step)
Gain Configurable with 2 Resistors
Low Input Bias Current: 170nA Max
PSRR: 118dB Min
Output Current: 1mA Max
Low Supply Current: 250μA, V
S
= 12V
Operating Temperature Range: –40°C to 125°C
Low Profile (1mm) SOT-23 (ThinSOT™) Package
APPLICATIONS
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Current Shunt Measurement
Battery Monitoring
Remote Sensing
Power Management
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
ThinSOT is a trademark of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
TYPICAL APPLICATION
16-Bit Resolution Unidirectional Output into LTC2433 ADC
I
LOAD
–
+IN
V
SENSE
Step Response
V
SENSE
–
ΔV
SENSE
–
= 100mV
5.5V
5V
+
R
IN
100Ω
–IN
5V TO 105V
L
O
A
D
V
–
+ –
V
+
5V
1μF
LTC6101HV
OUT
V
OUT
LTC2433-1
TO μP
V
OUT
T
A
= 25°C
V
+
= 12V
R
IN
= 100
R
OUT
= 5k
V
SENSE
+
= V
+
I
OUT
= 100μA
R
OUT
4.99k
0.5V
0V
I
OUT
= 0
500ns/DIV
6101 TA01
6101 TA01b
R
OUT
V
OUT
=
• V
SENSE
= 49.9V
SENSE
R
IN
6101fg
1
LTC6101/LTC6101HV
ABSOLUTE MAXIMUM RATINGS
(Note 1)
Total Supply Voltage (V
+
to V
–
)
LTC6101............................................................... 70V
LTC6101HV ........................................................ 105V
Minimum Input Voltage (–IN Pin) .................... (V
+
– 4V)
Maximum Output Voltage (Out Pin) ............................9V
Input Current....................................................... ±10mA
Output Short-Circuit Duration (to V
–
).............. Indefinite
Operating Temperature Range
LTC6101C/LTC6101HVC .......................– 40°C to 85°C
LTC6101I/LTC6101HVI ......................... –40°C to 85°C
LTC6101H/LTC6101HVH ................... –40°C to 125°C
Specified Temperature Range (Note 2)
LTC6101C/LTC6101HVC ........................... 0°C to 70°C
LTC6101I/LTC6101HVI ......................... –40°C to 85°C
LTC6101H/LTC6101HVH ................... –40°C to 125°C
Storage Temperature Range.................. –65°C to 150°C
Lead Temperature (Soldering, 10 sec) ................. 300°C
PACKAGE/ORDER INFORMATION
TOP VIEW
–IN
NC
NC
OUT
1
2
3
4
8
7
6
5
+IN
V
+
NC
V
–
OUT 1
V
–
2
–IN 3
4 +IN
TOP VIEW
5 V
+
MS8 PACKAGE
8-LEAD PLASTIC MSOP
T
JMAX
= 150°C,
θ
JA
= 300°C/ W
S5 PACKAGE
5-LEAD PLASTIC TSOT-23
T
JMAX
= 150°C,
θ
JA
= 250°C/ W
ORDER PART NUMBER
LTC6101ACMS8
LTC6101AIMS8
LTC6101AHMS8
LTC6101HVACMS8
LTC6101HVAIMS8
LTC6101HVAHMS8
MS8 PART MARKING*
LTBSB
LTBSB
LTBSB
LTBSX
LTBSX
LTBSX
ORDER PART NUMBER
LTC6101ACS5
LTC6101AIS5
LTC6101AHS5
LTC6101BCS5
LTC6101CCS5
LTC6101BIS5
LTC6101CIS5
LTC6101BHS5
LTC6101CHS5
LTC6101HVACS5
LTC6101HVAIS5
LTC6101HVAHS5
LTC6101HVBCS5
LTC6101HVCCS5
LTC6101HVBIS5
LTC6101HVCIS5
LTC6101HVBHS5
LTC6101HVCHS5
S5 PART MARKING*
LTBND
LTBND
LTBND
LTBND
LTBND
LTBND
LTBND
LTBND
LTBND
LTBSZ
LTBSZ
LTBSZ
LTBSZ
LTBSZ
LTBSZ
LTBSZ
LTBSZ
LTBSZ
Order Options
Tape and Reel: Add #TR
Lead Free: Add #PBF Lead Free Tape and Reel: Add #TRPBF
Lead Free Part Marketing:
http://www.linear.com/leadfree/
Consult LTC Marketing for parts specified with wider operating temperature ranges.
*The temperature grades and parametric grades are identified by a label on the shipping container.
6101fg
2
LTC6101/LTC6101HV
(LTC6101) The
●
denotes the specifications which apply over the full
operating temperature range, otherwise specifications are at T
A
= 25°C, R
IN
= 100Ω, R
OUT
= 10k, V
SENSE+
= V
+
(see Figure 1 for
details), 4V ≤ V
S
≤ 60V unless otherwise noted.
SYMBOL
V
S
V
OS
PARAMETER
Supply Voltage Range
Input Offset Voltage
V
SENSE
= 5mV, Gain = 100, LTC6101A
V
SENSE
= 5mV, Gain = 100, LTC6101AC, LTC6101AI
V
SENSE
= 5mV, Gain = 100, LTC6101AH
V
SENSE
= 5mV, Gain = 100, LTC6101B
V
SENSE
= 5mV, Gain = 100, LTC6101C
ΔV
OS
/ΔT
Input Offset Voltage Drift
V
SENSE
= 5mV, LTC6101A
V
SENSE
= 5mV, LTC6101B
V
SENSE
= 5mV, LTC6101C
R
IN
= 1M
R
IN
= 1M
V
OS
within Specification, R
IN
= 1k (Note 3)
V
S
= 6V to 60V, V
SENSE
= 5mV, Gain = 100
V
S
= 4V to 60V, V
SENSE
= 5mV, Gain = 100
V
OUT
Maximum Output Voltage
12V ≤ V
S
≤ 60V, V
SENSE
= 88mV
V
S
= 6V, V
SENSE
= 330mV, R
IN
= 1k, R
OUT
= 10k
V
S
= 4V, V
SENSE
= 550mV, R
IN
= 1k, R
OUT
= 2k
V
SENSE
= 0V, Gain = 100, LTC6101A
V
SENSE
= 0V, Gain = 100, LTC6101AC, LTC6101AI
V
SENSE
= 0V, Gain = 100, LTC6101AH
V
SENSE
= 0V, Gain = 100, LTC6101B
V
SENSE
= 0V, Gain = 100, LTC6101C
I
OUT
t
r
BW
I
S
Maximum Output Current
Input Step Response
(to 2.5V on a 5V Output Step)
Signal Bandwidth
Supply Current
6V ≤ V
S
≤ 60V, R
OUT
= 2k, V
SENSE
= 110mV, Gain = 20
V
S
= 4V, V
SENSE
= 550mV, Gain = 2, R
OUT
= 2k
ΔV
SENSE
= 100mV Transient, 6V ≤ V
S
≤ 60V, Gain = 50
V
S
= 4V
I
OUT
= 200μA, R
IN
= 100, R
OUT
= 5k
I
OUT
= 1mA, R
IN
= 100, R
OUT
= 5k
V
S
= 4V, I
OUT
= 0, R
IN
= 1M
V
S
= 6V, I
OUT
= 0, R
IN
= 1M
V
S
= 12V, I
OUT
= 0, R
IN
= 1M
V
S
= 60V, I
OUT
= 0, R
IN
= 1M
LTC6101AI, LTC6101AC, LTC6101BI, LTC6101BC,
LTC6101CI, LTC6101CC
LTC6101AH, LTC6101BH, LTC6101CH
●
ELECTRICAL CHARACTERISTICS
CONDITIONS
MIN
●
●
●
TYP
±85
MAX
60
±300
±450
±535
±450
±810
800
1200
UNITS
V
μV
μV
μV
μV
μV
μV
μV
μV/°C
μV/°C
μV/°C
4
±150
●
±400
●
●
●
●
●
●
●
●
●
●
●
●
●
●
±1
±3
±5
100
±2
500
118
115
110
105
8
3
1
0
30
45
53.5
45
81
150
250
140
133
170
245
±15
I
B
I
OS
V
SENSE(MAX)
PSRR
Input Bias Current
Input Offset Current
Input Sense Voltage Full Scale
Power Supply Rejection Ratio
nA
nA
nA
mV
dB
dB
dB
dB
V
V
V
mV
mV
mV
mV
mV
mV
mV
mA
mA
V
OUT (0)
Minimum Output Voltage
0
●
0
●
●
●
1
0.5
1
1.5
140
200
220
240
450
475
475
525
500
590
640
690
720
μs
μs
kHz
kHz
μA
μA
μA
μA
μA
μA
μA
μA
μA
●
250
●
375
●
●
6101fg
3
LTC6101/LTC6101HV
(LTC6101HV) The
●
denotes the specifications which apply over the full
operating temperature range, otherwise specifications are at T
A
= 25°C, R
IN
= 100Ω, R
OUT
= 10k, V
SENSE+
= V
+
(see Figure 1 for
details), 5V ≤ V
S
≤ 100V unless otherwise noted.
SYMBOL
V
S
V
OS
PARAMETER
Supply Voltage Range
Input Offset Voltage
V
SENSE
= 5mV, Gain = 100, LTC6101HVA
V
SENSE
= 5mV, Gain = 100, LTC6101HVAC, LTC6101HVAI
V
SENSE
= 5mV, Gain = 100, LTC6101HVAH
V
SENSE
= 5mV, Gain = 100, LTC6101HVB
V
SENSE
= 5mV, Gain = 100, LTC6101HVC
ΔV
OS
/ΔT
Input Offset Voltage Drift
V
SENSE
= 5mV, LTC6101HVA
V
SENSE
= 5mV, LTC6101HVB
V
SENSE
= 5mV, LTC6101HVC
R
IN
= 1M
R
IN
= 1M
V
OS
within Specification, R
IN
= 1k (Note 3)
V
S
= 6V to 100V, V
SENSE
= 5mV, Gain = 100
V
S
= 5V to 100V, V
SENSE
= 5mV, Gain = 100
V
OUT
V
OUT (0)
Maximum Output Voltage
Minimum Output Voltage
12V ≤ V
S
≤ 100V, V
SENSE
= 88mV
V
S
= 5V, V
SENSE
= 330mV, R
IN
= 1k, R
OUT
= 10k
V
SENSE
= 0V, Gain = 100, LTC6101HVA
V
SENSE
= 0V, Gain = 100, LTC6101HVAC, LTC6101HVAI
V
SENSE
= 0V, Gain = 100, LTC6101HVAH
V
SENSE
= 0V, Gain = 100, LTC6101HVB
V
SENSE
= 0V, Gain = 100, LTC6101HVC
I
OUT
t
r
BW
I
S
Maximum Output Current
Input Step Response
(to 25V on a 5V Output Step)
Signal Bandwidth
Supply Current
5V ≤ V
S
≤ 100V, R
OUT
= 2k, V
SENSE
= 110mV, Gain = 20
ΔV
SENSE
= 100mV Transient, 6V ≤ V
S
≤ 100V, Gain = 50
V
S
= 5V
I
OUT
= 200μA, R
IN
= 100, R
OUT
= 5k
I
OUT
= 1mA, R
IN
= 100, R
OUT
= 5k
V
S
= 5V, I
OUT
= 0, R
IN
= 1M
V
S
= 6V, I
OUT
= 0, R
IN
= 1M
V
S
= 12V, I
OUT
= 0, R
IN
= 1M
V
S
= 60V, I
OUT
= 0, R
IN
= 1M
LTC6101HVI, LTC6101HVC
LTC6101HVH
V
S
= 100V, I
OUT
= 0, R
IN
= 1M
LTC6101HVAI, LTC6101HVAC, LTC6101HVBI,
LTC6101HVBC, LTC6101HVCI, LTC6101HVCC
LTC6101HVAH, LTC6101HVBH, LTC6101HVCH
●
ELECTRICAL CHARACTERISTICS
CONDITIONS
MIN
●
●
●
TYP
±85
MAX
100
±300
±450
±535
±450
±810
800
1200
UNITS
V
μV
μV
μV
μV
μV
μV
μV
μV/°C
μV/°C
μV/°C
5
±150
●
±400
●
●
●
●
●
●
●
●
●
●
●
●
●
±1
±3
±5
100
±2
500
118
115
110
105
8
3
0
30
45
53.5
45
81
150
250
140
133
170
245
±15
I
B
I
OS
V
SENSE(MAX)
PSRR
Input Bias Current
Input Offset Current
Input Sense Voltage Full Scale
Power Supply Rejection Ratio
nA
nA
nA
mV
dB
dB
dB
dB
V
V
mV
mV
mV
mV
mV
mV
mV
mA
μs
μs
kHz
kHz
0
●
0
●
●
1
1
1.5
140
200
200
220
450
475
475
525
500
590
640
690
720
640
690
720
μA
μA
μA
μA
μA
μA
μA
μA
μA
μA
μA
μA
6101fg
●
230
●
350
●
●
350
●
●
4
LTC6101/LTC6101HV
ELECTRICAL CHARACTERISTICS
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:
The LTC6101C/LTC6101HVC are guaranteed to meet specified
performance from 0°C to 70°C. The LTC6101C/LTC6101HVC are designed,
characterized and expected to meet specified performance from –40°C to
85°C but are not tested or QA sampled at these temperatures. LTC6101I/
LTC6101HVI are guaranteed to meet specified performance from –40°C
to 85°C. The LTC6101H/LTC6101HVH are guaranteed to meet specified
performance from –40°C to 125°C.
Note 3:
R
OUT
= 10k for 6V ≤ V
S
≤ 100V, R
OUT
= 2k for V
S
= 4V.
TYPICAL PERFORMANCE CHARACTERISTICS
Input V
OS
vs Temperature
800
600
400
REPRESENTATIVE
UNITS
Input V
OS
vs Supply Voltage
40
20
0
T
A
= 0°C
Input Sense Range
2.5
T
A
= 25°C
T
A
= 0°C
T
A
= –40°C
2
MAXIMUM V
SENSE
(V)
INPUT OFFSET (μV)
INPUT OFFSET (μV)
200
0
–200
–400
–600
–800
A GRADE
B GRADE
C GRADE
–40 –20
0
R
IN
= 100
R
OUT
= 5k
V
IN
= 5mV
–20
–40
–60
–80
R
IN
= 100
R
OUT
= 5k
V
IN
= 5mV
4
11
18
25 32 39
V
SUPPLY
(V)
T
A
= –40°C
T
A
= 45°C
T
A
= 70°C
1.5
T
A
= 85°C
T
A
= 125°C
1
–100
–120
–140
T
A
= 85°C
0.5
T
A
= 125°C
–1000
20 40 60 80 100 120
TEMPERATURE (°C)
6101 G01
0
46
53
60
LTC6101
LTC6101HV
R
IN
= 3k
R
OUT
= 3k
4 10 20 30 40 50 60 70 80 90 100
V
SUPPLY
(V)
6101 G05
6101 G02
LTC6101: V
OUT
Maximum
vs Temperature
12
V
S
= 60V
10
LTC6101HV: V
OUT
Maximum
vs Temperature
12
V
S
= 100V
10
6
7
LTC6101: I
OUT
Maximum
vs Temperature
V
S
= 12V
V
S
= 60V
MAXIMUM OUTPUT (V)
MAXIMUM OUTPUT (V)
V
S
= 12V
8
6
V
S
= 6V
4
V
S
= 4V
2
0
–40 –20
8
6
4
2
0
–40 –20
V
S
= 6V
V
S
= 5V
V
S
= 4V
MAXIMUM I
OUT
(mA)
V
S
= 12V
5
4
3
2
V
S
= 6V
V
S
= 4V
1
0
–40 –20
0
20 40 60 80
TEMPERATURE (°C)
100 120
6101 G06
0
20 40 60 80
TEMPERATURE (°C)
100 120
6101 G20
0
20 40 60 80
TEMPERATURE (°C)
100 120
6101 G07
6101fg
5
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