LTC6103IMS8#PBF Linear Technology, LTC6103IMS8#PBF Datasheet

IC AMP CURRENT SENSE 8-MSOP

LTC6103IMS8#PBF

Manufacturer Part Number
LTC6103IMS8#PBF
Description
IC AMP CURRENT SENSE 8-MSOP
Manufacturer
Linear Technology
Datasheet

Specifications of LTC6103IMS8#PBF

Amplifier Type
Current Sense
Number Of Circuits
2
Gain Bandwidth Product
140kHz
Current - Input Bias
100nA
Voltage - Input Offset
85µV
Current - Supply
390µA
Current - Output / Channel
1mA
Voltage - Supply, Single/dual (±)
4 V ~ 60 V, ±2 V ~ 30 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
8-MSOP, Micro8™, 8-uMAX, 8-uSOP,
No. Of Amplifiers
2
Input Bias Current
170nA
Output Current Per Channel
1mA
Input Offset Voltage
600µV
Gain Db Max
20dB
Bandwidth
200kHz
Supply Voltage Range
4V To 60V
Rohs Compliant
Yes
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:
LTC6103IMS8#PBFLTC6103IMS8
Manufacturer:
LINEAR/凌特
Quantity:
20 000
Company:
Part Number:
LTC6103IMS8#PBF
Manufacturer:
LT
Quantity:
1 830
FEATURES
APPLICATIONS
TYPICAL APPLICATION
Two 16-Bit Current Sense Channels Connected Directly to the LTC2436-1 ADC
Two Independent Current Sense Amplifi ers
Wide Supply Range: 4V to 60V, 70V Absolute
Maximum
Low Offset Voltage: 450µV Maximum
Fast Response: 1µs Response Time
Gain Confi gurable with External Resistors
Low Input Bias Current: 170nA Maximum
PSRR: 110dB Minimum (6V to 60V)
Output Current: 1mA Maximum
Low Supply Current: 275µA per Amplifi er, V
Specifi ed for –40°C to 125°C Temperature Range
Available in an 8-lead MSOP Package
Current Shunt Measurement
Battery Monitoring
Remote Sensing
Power Management
High Voltage Level Translator
LOAD
I
LTC6103
LOAD
V
SA
+ –
8
+INA
V
4.99k
SENSE
R
OUTA
OUT
+
V
7
1
A
+
–INA
R
100Ω
IN
4
V
V
6
2
B
+
+
OUTB
V
–INB
R
100Ω
R
4.99k
SENSE
IN
OUT
+
5
V
+INB
I
SB
LOAD
LOAD
4
7
5
6
CH1
CH0
S
LTC2436-1
= 12V
2
3,8,9,10,14,15,16
6103 TA01a
5V
1
1µF
Dual High Voltage, High Side
13
12
11
DESCRIPTION
The LTC
current sense amplifi er. The two internal amplifi ers are
independent except that they share the same V
Design fl exibility is provided by the excellent device char-
acteristics: 450µV maximum offset, and only 275µA of
current consumption (typical at 12V) for each amplifi er.
The LTC6103 operates on supplies from 4V to 60V.
The LTC6103 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 al-
lows the use of a small shunt resistor and large gain-setting
resistors. As a result, power loss in the shunt is minimal.
The wide operating supply range and high accuracy make
the LTC6103 ideal for an extensive variety of applications
from automotive to industrial and power management.
The fast response makes the LTC6103 the perfect choice
for load current warnings and shutoff protection control.
With very low supply current, the LTC6103 is suitable for
power sensitive applications.
The LTC6103 is available in an 8-lead MSOP package.
All other trademarks are the property of their respective owners.
TO µP
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
®
Current Sense Amplifi er
6103 is a versatile, high voltage, high side, dual
0.5V
0V
V
I
V
OUT
SENSE
OUT
= 100µA
∆V
Step Response
SENSE
I
500ns/DIV
OUT
= 100mV
= 0µA
LTC6103
T
V
R
R
V
A
+
IN
OUT
SENSE
= 25°C
= 12V
= 100Ω
= 5k
+
6103 TA01b
terminal.
= V
+
5.5V
5V
1
6103f

Related parts for LTC6103IMS8#PBF

LTC6103IMS8#PBF Summary of contents

Page 1

... With very low supply current, the LTC6103 is suitable for power sensitive applications. The LTC6103 is available in an 8-lead MSOP package. , LT, LTC and LTM are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. 5V 1µF ...

Page 2

LTC6103 ABSOLUTE MAXIMUM RATINGS (Note 1) Total Supply Voltage (+INA/+INB to V Maximum Applied Output Voltage (OUTA/OUTB) ........9V Input Current ........................................................±10mA Output Short-Circuit Duration (to V Operating Temperature Range LTC6103C ............................................ –40°C to 85°C LTC6103I ............................................. –40°C to 85°C LTC6103H ...

Page 3

ELECTRICAL CHARACTERISTICS temperature range, otherwise specifi cations are at T noted. SYMBOL PARAMETER Supply Current per Amplifi er +INA +INB Note 1: Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. ...

Page 4

LTC6103 TYPICAL PERFORMANCE CHARACTERISTICS V Maximum vs Temperature OUT 60V 12V –40 – 100 ...

Page 5

TYPICAL PERFORMANCE CHARACTERISTICS Step Response 0mV to 100mV – V SENSE – ∆V =100mV SENSE C = 10pF LOAD 1000pF LOAD T = 25° 12V R = 100Ω OUT ...

Page 6

LTC6103 PIN FUNCTIONS OUTA (Pin 1): Current Output of Amplifi OUTA will source a current that is proportional to the sense voltage of amplifi into an external resistor. OUTB (Pin 2): Current Output of Amplifi er ...

Page 7

THEORY OF OPERATION An internal sense amplifi er loop forces –IN to have the same potential as +IN. Connecting an external resistor between –IN and V forces a potential across R same as the sense voltage across R ...

Page 8

LTC6103 APPLICATIONS INFORMATION Sense Resistor Connection Kelvin connections should be used between the inputs (+IN and –IN) and the sense resistor in all but the lowest power applications. Solder connections and PC board intercon- nections that carry high current can ...

Page 9

APPLICATIONS INFORMATION CMPZ4697 10k M1 Si4465 R SENSE(LO) I LOAD 100mΩ V OUT Figure 3b. The LTC6103 Allows High-Low Current Ranging Care should be taken when designing the printed circuit board layout to minimize input trace resistance (to Pins 5, ...

Page 10

LTC6103 APPLICATIONS INFORMATION Error Sources The current sense system uses an amplifi er and resistors to apply gain and level shift the result. The output is then dependent on the characteristics of the amplifi er, such as bias current and ...

Page 11

APPLICATIONS INFORMATION If the power dissipation of the sense resistor is chosen to be less than 0.5W then: 500 mW ≤ 500 m SENSE 2 I SENSE MAX ( ) • R SENSE(MAX) SENSE(MAX) SENSE ...

Page 12

LTC6103 APPLICATIONS INFORMATION will give a lowpass response. This will reduce unwanted noise from the output, and may also be useful as a charge reservoir to keep the output steady while driving a switch- ing circuit such as a mux ...

Page 13

APPLICATIONS INFORMATION Voltage Translator Each amplifi the LTC6103 can be used as a high volt- age level translator circuit as shown in Figure 7. In this application, the LTC6103 translates a differential voltage signal riding on top of ...

Page 14

LTC6103 TYPICAL APPLICATIONS ±10A Differential Output Bidirectional Current Monitor 10mΩ 200Ω 200Ω BATT 4V < V < 60V BATT +INA –INA –INB + – – – OUTA OUTB V LTC6103 ...

Page 15

... LEAD COPLANARITY (BOTTOM OF LEADS AFTER FORMING) SHALL BE 0.102mm (.004") MAX 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. ...

Page 16

... Operation, Gain Confi gurable with External Resistors ● www.linear.com + DIFFERENTIAL 4.99k OUTPUT + ±2.5V FS (MAY BE LIMITED IF V < 6V) ±10A FS – 4.99k PWM* 6103 TA04 , 55µA Supply Current 0.4V/µs Slew Rate, >1MHz Bandwidth, EE – 6103f LT 0107 • PRINTED IN USA © LINEAR TECHNOLOGY CORPORATION 2007 ...

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