LTC6104CMS8#PBF Linear Technology, LTC6104CMS8#PBF Datasheet

IC AMP CURRENT SENSE 8-MSOP

LTC6104CMS8#PBF

Manufacturer Part Number
LTC6104CMS8#PBF
Description
IC AMP CURRENT SENSE 8-MSOP
Manufacturer
Linear Technology
Datasheet

Specifications of LTC6104CMS8#PBF

Amplifier Type
Current Sense
Number Of Circuits
1
Gain Bandwidth Product
200kHz
Current - Input Bias
100nA
Voltage - Input Offset
85µV
Current - Supply
640µA
Current - Output / Channel
1mA
Voltage - Supply, Single/dual (±)
4 V ~ 60 V, ±2 V ~ 30 V
Operating Temperature
0°C ~ 70°C
Mounting Type
Surface Mount
Package / Case
8-MSOP, Micro8™, 8-uMAX, 8-uSOP,
No. Of Amplifiers
1
Input Bias Current
170nA
Output Current Per Channel
1mA
Input Offset Voltage
600µV
Gain Db Max
5dB
Bandwidth
200kHz
Supply Voltage Range
4V To 60V
Supply Current
640µA
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:
LTC6104CMS8#PBFLTC6104CMS8
Manufacturer:
LT
Quantity:
10 000
FEATURES
APPLICATIONS
TYPICAL APPLICATION
All other trademarks are the property of their respective owners.
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
Wide Supply Range: 4V to 60V with 70V Absolute
Maximum
Low Offset Voltage: ±450µV Maximum
Fast Response: 1µs Response Time
Gain Confi gurable with External Resistors; Each
Direction is Gain Confi gurable
Low Input Bias Current: 170nA Maximum
PSRR: 110dB Minimum
Output Current: ±1mA Maximum
Low Supply Current: 520µA, 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
CHARGER/LOAD
TO
LTC6104
V
S
I
+ –
16-Bit Resolution Bi-Directional Output into LTC1286 ADC
LOAD
8
OUT
+INA
A
1
7
R
2.5k
CURRENT
MIRROR
–INA
V
R
OUT
R
100Ω
SENSE
SENSE
IN
6
+
–INB
R
100Ω
IN
4
V
S
B
5
+
= 12V
+INB
V
S
+
12V
V
REF
0.1µF
C2
R1
2.3k
LT
®
1004-2.5
+IN
–IN
DESCRIPTION
The LTC
directional current sense amplifi er. Design fl exibility is
provided by the excellent device characteristics: ±450µV
maximum offset and only 520µA of current consumption
(typical at 12V). The LTC6104 operates on supplies from
4V to 60V.
The LTC6104 monitors bi-directional current via the voltage
across an external sense resistor (shunt resistor). This
sense voltage is then translated into a ground referenced
signal. Gain is set with three external resistors and can
be separately confi gured for both directions. 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 minimal.
The wide operating supply range and high accuracy make
the LTC6104 ideal for a wide variety of automotive, industrial
and power management applications. A maximum input
sense voltage of 500mV allows a wide range of currents
to be monitored. The fast response makes the LTC6104
the perfect choice for load current warnings and shutoff
protection control. With very low supply current, the
LTC6104 is suitable for power sensitive applications.
The LTC6104 is available in an 8-lead MSOP package.
V
REF
LTC1286
GND
V
High Voltage, High Side,
CC
1µF
C1
®
6104 TA01a
D
6104 is a versatile, high voltage, high side, bi-
CLK
OUT
CS
Bi-Directional Current
+
5V
TO µP
Sense Amplifi er
1.5V
6V
1V
V
I
SENSE
OUT
I
OUT
V
= 100µA
OUT
= 0µA
Step Response
TIME (1µs/DIV)
LTC6104
∆V
SENSE
= 100mV
T
V
R
R
V
V
A
S
IN
OUT
SENSE
REF
= 25°C
= 12V
= 100Ω
= 1V
= 5k
+
= V
6104 G15
S
1
6104f

Related parts for LTC6104CMS8#PBF

LTC6104CMS8#PBF Summary of contents

Page 1

... Current Shunt Measurement ■ Battery Monitoring ■ Remote Sensing ■ Power Management , LT, LTC and LTM are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. TYPICAL APPLICATION 16-Bit Resolution Bi-Directional Output into LTC1286 ADC I LOAD V SENSE – ...

Page 2

LTC6104 ABSOLUTE MAXIMUM RATINGS (Note 1) Total Supply Voltage (+INB Maximum Applied Output Voltage (OUT) ....................9V Input Current ........................................................±10mA Output Short-Circuit Duration (to V Operating Temperature Range LTC6104C ............................................ –40°C to 85°C LTC6104I ............................................. –40°C to ...

Page 3

ELECTRICAL CHARACTERISTICS temperature range, otherwise specifi cations are ≥ 6V 0.75V for V = 4V, unless otherwise noted. S REF S SYMBOL PARAMETER I Maximum Output Current OUT(MAX) I Current Mirror Gain Error OUT-GAINERR I ...

Page 4

LTC6104 TYPICAL PERFORMANCE CHARACTERISTICS Input V vs Temperature OS 100 TWO REPRESENTATIVE UNITS 100Ω – OUT – 5mV INTERNAL OS –60 AMPLIFIER A V ...

Page 5

TYPICAL PERFORMANCE CHARACTERISTICS Step Response 0mV to 10mV – V SENSE –10mV S 2. 25° 12V 100Ω OUT + SENSE V = ...

Page 6

LTC6104 TYPICAL PERFORMANCE CHARACTERISTICS Step Response Falling Edge – V SENSE – ∆V = 100mV SENSE I = 0µA OUT 6V 5. –100µA OUT T = 25° 12V S = 100Ω ...

Page 7

BLOCK DIAGRAM – OUT THEORY OF OPERATION When V is positive, an internal sense amplifi er loop SENSE forces –INA to have the same potential as +INA. Connect- ing an external resistor series ...

Page 8

LTC6104 APPLICATIONS INFORMATION Selection of External Current Sense Resistor The external sense resistor has a signifi cant effect SENSE on the function of a current sensing system and must be chosen with care. First, the power dissipation in ...

Page 9

APPLICATIONS INFORMATION Selection of External Input Resistor, R The external input resistor controls the trans- IN conductance of the current sense circuit. V SENSE = Since I , transconductance g OUT For example if R ...

Page 10

LTC6104 APPLICATIONS INFORMATION From the Electrical Characteristics of the LTC6104, the output voltage range is 0.3V to 8V. If the circuit that is driven by the output limits the maxi- mum output voltage to ≈5V, to achieve maximum dynamic range, ...

Page 11

APPLICATIONS INFORMATION If the maximum output current, I OUT R equals 3V/1mA = 3k and R = 3k/6 – 0.3Ω (internal OUT IN device resistance) = 499.7Ω. The output error due to DC offset is ±510µV (typ) and the error ...

Page 12

LTC6104 APPLICATIONS INFORMATION the high current path, as this will increase the voltage drop and escalate this error. Output Current Limitations Due to Power Dissipation The LTC6104 can deliver up to ±1mA continuous current to the output pin. This current ...

Page 13

APPLICATIONS INFORMATION Reverse Supply Protection Some applications may be tested with reverse-polarity supplies due to an expectation of this type of fault during operation. The LTC6104 is not protected internally from external reversal of supply polarity. To prevent damage that ...

Page 14

LTC6104 APPLICATIONS INFORMATION decrease the response time, since V Reducing R and increasing R IN OUT effect of increasing the voltage gain of the circuit. Use of Dual Sense Resistors The dual amplifi er topology offers signifi cant advantages for ...

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

... High Voltage 5V to 100V Operation, SOT23 4V to 60V Operation, Gain Confi gurable with External Resistors ● www.linear.com +INB + V S 6104 TA03 , 55µA Supply Current 0.4V/µs Slew Rate, >1MHz Bandwidth, EE – LT 0107 • PRINTED IN USA © LINEAR TECHNOLOGY CORPORATION 2007 6104f ...

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