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LT1999HMS8-20F#WTRPBF

Description
SP Amp Current Sense Amp Single 5.5V Automotive 8-Pin MSOP T/R
File Size1MB,28 Pages
ManufacturerADI
Websitehttps://www.analog.com
Download Datasheet Parametric View All

LT1999HMS8-20F#WTRPBF Overview

SP Amp Current Sense Amp Single 5.5V Automotive 8-Pin MSOP T/R

LT1999HMS8-20F#WTRPBF Parametric

Parameter NameAttribute value
EU restricts the use of certain hazardous substancesCompliant
ECCN (US)EAR99
Part StatusActive
HTS8542.33.00.01
TypeCurrent Sense Amplifier
Number of Elements per Chip2
Number of Channels per Chip1
Maximum Voltage Gain Range (dB)<35
Maximum Voltage Gain (dB)26.02(Typ)
Minimum CMRR Range (dB)75 to 85
Minimum CMRR (dB)75
Minimum PSRR (dB)68
Typical Output Current (mA)31@5V@-40C to 125C
Maximum Input Offset Voltage (mV)0.75@5V
Maximum Operating Supply Voltage (V)5.5
Maximum Supply Voltage Range (V)5 to 7
Minimum Single Supply Voltage (V)4.5
Typical Single Supply Voltage (V)5
Maximum Single Supply Voltage (V)5.5
Maximum Input Bias Current (uA)1.5@5V@-40C to 125C
Maximum Supply Current (mA)7.1@5V@-40C to 125C
Maximum Input Resistance (MOhm)0.0096@5V@-40C to 125C
Minimum Operating Temperature (°C)-40
Maximum Operating Temperature (°C)125
PackagingTape and Reel
Power Supply TypeSingle
Pin Count8
Standard Package NameMSOP
Supplier PackageMSOP
MountingSurface Mount
Package Height0.86
Package Length3
Package Width3
PCB changed8
Lead ShapeGull-wing
LT1999-10/LT1999-20/
LT1999-50
High Voltage, Bidirectional
Current Sense Amplifier
FEATURES
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DESCRIPTION
The
LT
®
1999
is a high speed precision current sense
amplifier, designed to monitor bidirectional currents over
a wide common mode range. The LT1999 is offered in
three gain options: 10V/V, 20V/V, and 50V/V.
The LT1999 senses current via an external resistive shunt
and generates an output voltage, indicating both mag-
nitude and direction of the sensed current. The output
voltage is referenced halfway between the supply voltage
and ground, or an external voltage can be used to set
the reference level. With a 2MHz bandwidth and a com-
mon mode input range of –5V to 80V, the LT1999 is suit-
able for monitoring currents in H-Bridge motor controls,
switching power supplies, solenoid currents, and battery
charge currents from full charge to depletion.
The LT1999 operates from an independent 5V supply and
draws 1.55mA. A shutdown mode is provided for mini-
mizing power consumption.
The LT1999 is available in an 8-lead SOP an 8-lead MSOP
,
(original pinout), or an 8-lead pinout option engineered
for FMEA.
All registered trademarks and trademarks are the property of their respective owners.
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Buffered Output with 3 Gain Options:
10V/V, 20V/V, 50V/V
Gain Accuracy: 0.5% Max
Input Common Mode Voltage Range: –5V to 80V
AC CMRR > 80dB at 100kHz
Input Offset Voltage: 1.5mV Max
–3dB Bandwidth: 2MHz
Smooth, Continuous Operation Over Entire Common
Mode Range
4kV HBM Tolerant and 1kV CDM Tolerant
Low Power Shutdown <10µA
–55°C to 150°C Operating Temperature Range
8-Lead MSOP and 8-Lead SO (Narrow) Packages
8-Lead MSOP Pinout Option Engineered for FMEA
AEC-Q100 Qualified for Automotive Applications
APPLICATIONS
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High Side or Low Side Current Sensing
H-Bridge Motor Control
Solenoid Current Sense
High Voltage Data Acquisition
PWM Control Loops
Fuse/MOSFET Monitoring
TYPICAL APPLICATION
V
S
5V
1
V
+
SHDN
LT1999
V
+
2µA
8
R
G
Full Bridge Armature Current Monitor
V
OUT
2.5V
V
+IN
(20V/DIV)
V
OUT
(2V/DIV)
R
S
V
–IN
3
5V
4
0.1µF
V
+
0.8k
0.8k
4k
V
+
Document Feedback
For more information
www.analog.com
+
V
+IN
2
4k
+
V
SHDN
7
V
+
160k
6
160k
5
V
OUT
V
+IN
V
REF
0.1µF
TIME (10µs/DIV)
1999 TA01b
1999 TA01a
1
Rev. E
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