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LT1787HVHS8#PBF

Description
IC OPAMP CURRENT SENSE 8SO
CategoryAnalog mixed-signal IC    The signal circuit   
File Size249KB,16 Pages
ManufacturerLinear ( ADI )
Websitehttp://www.analog.com/cn/index.html
Environmental Compliance
Download Datasheet Parametric View All

LT1787HVHS8#PBF Overview

IC OPAMP CURRENT SENSE 8SO

LT1787HVHS8#PBF Parametric

Parameter NameAttribute value
Brand NameLinear Technology
Is it Rohs certified?conform to
MakerLinear ( ADI )
Parts packaging codeSOIC
package instructionSOP, SOP8,.25
Contacts8
Manufacturer packaging codeS8
Reach Compliance Codecompliant
ECCN codeEAR99
Analog Integrated Circuits - Other TypesANALOG CIRCUIT
JESD-30 codeR-PDSO-G8
JESD-609 codee3
length4.9025 mm
Humidity sensitivity level1
Number of functions1
Number of terminals8
Maximum operating temperature125 °C
Minimum operating temperature-40 °C
Package body materialPLASTIC/EPOXY
encapsulated codeSOP
Encapsulate equivalent codeSOP8,.25
Package shapeRECTANGULAR
Package formSMALL OUTLINE
Peak Reflow Temperature (Celsius)260
power supply2.5/60 V
Certification statusNot Qualified
Maximum seat height1.752 mm
Maximum supply current (Isup)0.12 mA
Maximum supply voltage (Vsup)60 V
Minimum supply voltage (Vsup)2.5 V
Nominal supply voltage (Vsup)5 V
surface mountYES
technologyBIPOLAR
Temperature levelAUTOMOTIVE
Terminal surfaceMatte Tin (Sn)
Terminal formGULL WING
Terminal pitch1.27 mm
Terminal locationDUAL
Maximum time at peak reflow temperature30
width3.899 mm
LT1787/LT1787HV
Precision, High Side
Current Sense Amplifiers
FEATURES
DESCRIPTIO
Input Offset Voltage: 75
µ
V (Max)
60V Supply Operation (LT1787HV)
12-Bit Dynamic Range
Operating Current: 60µA
User-Selectable External Sense Resistor
Bidirectional High Side Current Sensing
Unidirectional or Bidirectional Output
Input Noise Filtering
–40°C to 125°C Operating Temperature Range
Available in 8-Lead SO and MSOP Packages
APPLICATIO S
Battery Monitoring
Power Monitoring
Portable Phones
Cellular Phones
Portable Test/Measurement Systems
Battery-Operated Systems
The LT
®
1787 is a complete micropower precision high
side current sense amplifier. The LT1787 monitors bidi-
rectional currents via the voltage across an external sense
resistor. A current or voltage output indicates the direction
and magnitude of the sense current. The LT1787 delivers
greater than a 12-bit dynamic range with ultralow 40µV
input offset voltage compared to a typical 250mV full-
scale input voltage. A fixed gain of 8 is set by onboard
precision resistors. Input signal filtering is easily imple-
mented with a capacitor between the FIL
and FIL
+
pins.
The LT1787HV operates from 2.5V to 60V total supply
voltage and the LT1787 operates from 2.5V to 36V total
supply voltage. Both versions have a PSRR in excess of
120dB. The LT1787/LT1787HV draw only 60µA and are
available in 8-lead SO and MSOP packages.
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
TYPICAL APPLICATIO
12-Bit Dynamic Resolution Unidirectional Output into LTC
®
1286 ADC
TO
LOAD
I = 100A
1
FIL
LT1787HV
R
SENSE
0.0016Ω
FIL
+
8
2.5V TO 60V
INPUT OFFSET VOLTAGE (µV)
50
40
30
20
10
0
–10
–20
–30
–40
–50
0
10
30
40
50
20
TOTAL SUPPLY VOLTAGE (V)
60
2 V
S
V
S+
7
3
4
DNC
V
EE
V
BIAS
6
R
OUT
20k
V
OUT
C2
0.1µF
5
R1
15k
C1
1µF
V
REF
V
CC
CS
+IN
LTC1286 CLK
–IN
D
GND
OUT
5V
TO
µP
V
OUT
= V
BIAS
+ (8 • I
LOAD
• R
SENSE
)
LT1634-1.25
1787 TA01
U
Input Offset Voltage vs Supply Voltage
1787 TA01b
U
U
1787fc
1
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