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LT1990IS8#TRPBF

Description
SP Amp DIFF AMP Single R-R O/P ±18V/36V Automotive 8-Pin SOIC N T/R
File Size230KB,16 Pages
ManufacturerADI
Websitehttps://www.analog.com
Download Datasheet Parametric View All

LT1990IS8#TRPBF Overview

SP Amp DIFF AMP Single R-R O/P ±18V/36V Automotive 8-Pin SOIC N T/R

LT1990IS8#TRPBF Parametric

Parameter NameAttribute value
EU restricts the use of certain hazardous substancesCompliant
ECCN (US)EAR99
Part StatusActive
HTS8542.33.00.01
TypeDifference Amplifier
Number of Elements per Chip1
Number of Channels per Chip1
Rail to RailRail to Rail Output
Minimum CMRR Range (dB)60 to 75
Minimum CMRR (dB)60
Minimum PSRR (dB)80
Maximum Input Offset Voltage (mV)3@5V
Maximum Operating Supply Voltage (V)±18|36
Maximum Supply Voltage Range (V)30 to 50
Minimum Single Supply Voltage (V)2.7
Typical Single Supply Voltage (V)3|5|9|12|15|18|24|28
Maximum Single Supply Voltage (V)36
Minimum Dual Supply Voltage (V)±1.35
Typical Dual Supply Voltage (V)±3|±5|±9|±12|±15
Maximum Dual Supply Voltage (V)±18
Maximum Supply Current (mA)0.12@3V
Maximum Input Resistance (MOhm)2@5V
Minimum Operating Temperature (°C)-40
Maximum Operating Temperature (°C)85
Supplier Temperature GradeIndustrial
PackagingTape and Reel
Power Supply TypeSingle|Dual
Pin Count8
Standard Package NameSOP
Supplier PackageSOIC N
MountingSurface Mount
Package Height1.5(Max)
Package Length5(Max)
Package Width3.99(Max)
PCB changed8
Lead ShapeGull-wing
LT1990
±250V
Input Range
G = 1, 10, Micropower,
Difference Amplifier
DESCRIPTIO
The LT
®
1990 is a micropower precision difference ampli-
fier with a very high common mode input voltage range. It
has pin selectable gains of 1 or 10. The LT1990 operates
over a
±250V
common mode voltage range on a
±15V
supply. The inputs are fault protected from common
mode voltage transients up to
±350V
and differential
voltages up to
±500V.
The LT1990 is ideally suited for both
high side and low side current or voltage monitoring.
On a single 5V supply, the LT1990 has an adjustable 85V
input range, 70dB min CMRR and draws less than 120µA
supply current. The rail-to-rail output maximizes the dy-
namic range, especially important for single supplies as
low as 2.7V.
The LT1990 is specified for single 3V, 5V and
±15V
supplies over both commercial and industrial temperature
ranges. The LT1990 is available in the 8-pin SO package.
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
FEATURES
Pin Selectable Gain of 1 or 10
High Common Mode Voltage Range:
85V Window (V
S
= 5V, 0V)
±250V
(V
S
=
±15V)
Common Mode Rejection Ratio: 70dB Min
Input Protection to
±350V
Gain Error: 0.28% Max
PSRR: 82dB Min
High Input Impedance: 2MΩ Differential,
500kΩ Common Mode
Micropower: 120µA Max Supply Current
Wide Supply Range: 2.7V to 36V
–3dB Bandwidth: 100kHz
Rail-to-Rail Output
8-Pin SO Package
APPLICATIO S
Battery Cell Voltage Monitoring
High Voltage Current Sensing
Signal Acquisition in Noisy Environments
Input Protection
Fault Protected Front Ends
Level Sensing
Isolation
TYPICAL APPLICATIO
+V
SOURCE
Full-Bridge Load Current Monitor
5V
LT1990
900k
7
2
1M
100k
10k
8
– +
I
L
R
S
3
V
REF
= 1.5V
4
OUT
IN
LT6650
GND FB
54.9k
1nF
40k
40k
20k
1
900k
100k
10k
1M
–12V
V
CM
73V
V
OUT
= V
REF
±
(10 • I
L
• R
S
)
1µF
1990fb
U
+
U
U
6
V
OUT
5
1990 TA01
1
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