LTC6101AHMS8#PBF Linear Technology, LTC6101AHMS8#PBF Datasheet

IC AMP CURRENT SENSE 8-MSOP

LTC6101AHMS8#PBF

Manufacturer Part Number
LTC6101AHMS8#PBF
Description
IC AMP CURRENT SENSE 8-MSOP
Manufacturer
Linear Technology
Datasheet

Specifications of LTC6101AHMS8#PBF

Amplifier Type
Current Sense
Number Of Circuits
1
Gain Bandwidth Product
200kHz
Current - Input Bias
100nA
Voltage - Input Offset
85µV
Current - Supply
375µA
Current - Output / Channel
1mA
Voltage - Supply, Single/dual (±)
4 V ~ 60 V
Operating Temperature
-40°C ~ 125°C
Mounting Type
Surface Mount
Package / Case
8-MSOP, Micro8™, 8-uMAX, 8-uSOP,
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Output Type
-
-3db Bandwidth
-
Slew Rate
-

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
LTC6101AHMS8#PBFLTC6101AHMS8
Manufacturer:
LT
Quantity:
10 000
TYPICAL APPLICATION
ThinSOT is a trademark of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
FEATURES
n
n
n
n
n
n
n
n
n
n
APPLICATIONS
n
n
n
n
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
Supply Range:
Low Offset Voltage: 300μV Max
Fast Response: 1μs Response Time (0V to 2.5V on
a 5V Output Step)
Gain Confi gurable with 2 Resistors
Low Input Bias Current: 170nA Max
PSRR: 118dB Min
Output Current: 1mA Max
Low Supply Current: 250μA, V
Operating Temperature Range: –40°C to 125°C
Low Profi le (1mm) SOT-23 (ThinSOT™) Package
Current Shunt Measurement
Battery Monitoring
Remote Sensing
Power Management
5V to 100V, 105V Absolute Maximum (LTC6101HV)
4V to 60V, 70V Absolute Maximum (LTC6101)
I
LOAD
L
O
A
D
16-Bit Resolution Unidirectional Output into LTC2433 ADC
+IN
V
LTC6101HV
V
OUT
=
R
+
R
OUT
V
IN
SENSE
• V
SENSE
+
S
= 49.9V
= 12V
4.99k
R
–IN
V
OUT
OUT
+
SENSE
R
100Ω
IN
V
OUT
5V TO 105V
LTC2433-1
6101 TA01
5V
DESCRIPTION
The LTC
side current sense amplifi ers. Design fl exibility 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.
TO μP
1μF
®
High-Side Current Sense
6101/LTC6101HV are versatile, high voltage, high
LTC6101/LTC6101HV
Amplifi er in SOT-23
5.5V
0.5V
5V
0V
V
V
SENSE
OUT
Step Response
ΔV
High Voltage,
SENSE
500ns/DIV
= 100mV
I
I
OUT
OUT
= 100μA
= 0
T
V
R
R
V
A
+
IN
OUT
SENSE
= 25°C
= 12V
= 100
= 5k
6101 TA01b
+
= V
+
6101fg
1

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LTC6101AHMS8#PBF Summary of contents

Page 1

... Current Shunt Measurement n Battery Monitoring n Remote Sensing n 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 V ...

Page 2

LTC6101/LTC6101HV ABSOLUTE MAXIMUM RATINGS (Note 1) + – Total Supply Voltage ( LTC6101 ............................................................... 70V LTC6101HV ........................................................ 105V Minimum Input Voltage (–IN Pin) .................... (V Maximum Output Voltage (Out Pin) ............................9V Input Current ....................................................... ±10mA Output Short-Circuit ...

Page 3

ELECTRICAL CHARACTERISTICS operating temperature range, otherwise specifi cations are at T details), 4V ≤ V ≤ 60V unless otherwise noted. S SYMBOL PARAMETER V Supply Voltage Range S V Input Offset Voltage OS ΔV /ΔT Input Offset Voltage Drift OS ...

Page 4

LTC6101/LTC6101HV ELECTRICAL CHARACTERISTICS operating temperature range, otherwise specifi cations are at T details), 5V ≤ V ≤ 100V unless otherwise noted. S SYMBOL PARAMETER V Supply Voltage Range S V Input Offset Voltage OS ΔV /ΔT Input Offset Voltage Drift ...

Page 5

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 ...

Page 6

LTC6101/LTC6101HV TYPICAL PERFORMANCE CHARATERISTICS LTC6101HV: I Maximum OUT vs Temperature 12V 100V –40 –20 ...

Page 7

TYPICAL PERFORMANCE CHARATERISTICS Step Response 100mV – V SENSE + -100mV C = 10pF LOAD 25° 12V R = 100 OUT + C = 1000pF V ...

Page 8

LTC6101/LTC6101HV PIN FUNCTIONS OUT: Current Output. OUT will source a current that is pro- portional to the sense voltage into an external resistor. – Negative Supply (or Ground for Single-Supply Operation). –IN: The internal sense amplifi er will ...

Page 9

APPLICATIONS INFORMATION Useful Gain Confi gurations Gain OUT SENSE OUT 20 499 10k 250mV 50 200 10k 100mV 100 100 10k 50mV Selection of External Current Sense Resistor The external sense resistor ...

Page 10

LTC6101/LTC6101HV APPLICATIONS INFORMATION Selection of External Input Resistor, R The external input resistor controls the transconduc- IN tance of the current sense circuit. Since I transconductance g = 1/R . For example ...

Page 11

APPLICATIONS INFORMATION Selection of External Output Resistor, R The output resistor determines how the output cur- OUT rent is converted to voltage simply I OUT In choosing an output resistor, the max output voltage must fi ...

Page 12

LTC6101/LTC6101HV APPLICATIONS INFORMATION If the offset current the LTC6101 amplifi 2nA, OS the 100 microvolt error above is reduced to 2 microvolts. + Adding R as described will maximize the dynamic IN range of the ...

Page 13

APPLICATIONS INFORMATION Output Filtering The output voltage simply I OUT makes fi ltering straightforward. Any circuit may be used which generates the required Z to get the desired fi lter OUT response. For example, a capacitor in ...

Page 14

LTC6101/LTC6101HV APPLICATIONS INFORMATION Reverse Supply Protection Some applications may be tested with reverse-polarity supplies due to an expectation of the type of fault during operation. The LTC6101 is not protected internally from external reversal of supply polarity. To prevent damage ...

Page 15

TYPICAL APPLICATIONS Bidirectional Current Sense Circuit with Separate Charge/Discharge Output CHARGER 100 +IN – LTC6101 DISCHARGING • R OUT D DISCHARGE CHARGING • R OUT C ...

Page 16

LTC6101/LTC6101HV TYPICAL APPLICATIONS 16-Bit Resolution Unidirectional Output into LTC2433 ADC I LOAD LOGIC FAULT OFF ON 1μ SENSE + – 100Ω +IN –IN + – – REF ...

Page 17

TYPICAL APPLICATIONS 48V Supply Current Monitor with Isolated Output with 105V Survivability I SENSE AND M2 ARE FQD3P50 TM R OUT V = OUT SENSE SENSE + – ...

Page 18

LTC6101/LTC6101HV PACKAGE DESCRIPTION 5.23 (.206) MIN 0.42 ± 0.038 (.0165 ± .0015) TYP RECOMMENDED SOLDER PAD LAYOUT 0.254 (.010) GAUGE PLANE 0.18 (.007) NOTE: 1. DIMENSIONS IN MILLIMETER/(INCH) 2. DRAWING NOT TO SCALE 3. DIMENSION DOES NOT INCLUDE MOLD FLASH, ...

Page 19

... MOLD FLASH SHALL NOT EXCEED 0.254mm 6. JEDEC PACKAGE REFERENCE IS MO-193 Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no representa- tion that the interconnection of its circuits as described herein will not infringe on existing patent rights. S5 Package ...

Page 20

... Indicates Charge Quantity and Polarity 4.1V to 48V Operation, Pin-Selectable Gain: 10, 12.5, 20, 25, 40, 50V/V ● www.linear.com I CHARGE +IN V BATT – + – V LTC6101 6101 TA05 , 55μA Supply Current 0.4V/μs Slew Rate, >1MHz EE LT 0108 REV G • PRINTED IN USA © LINEAR TECHNOLOGY CORPORATION 2005 6101fg ...

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