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LT1990IMS8-10#PBF

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LT1990-10
1
Rev 0
For more information www.analog.com
TYPICAL APPLICATION
FEATURES DESCRIPTION
±250V Input Range,
100kHz, G =10, Micropower
,
Difference Amplifier
The LT
®
1990-10 is a micropower precision difference am-
plifier with a very high common mode input voltage range,
a fixed gain of 10 and 100kHz
bandwidth. The LT1990-10
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 LT1990-10 is ideally suited for
both high side and low side current or voltage monitoring.
On a single 5V supply, the LT1990-10 has an adjustable
85V input range, 60dB min CMRR and draws less than
180µA supply current. The rail-to-rail output maximizes
the dynamic range, especially important for single sup
-
plies as low as 2.7V.
The LT1990-10 is specified for single
3V, 5V and ±15V
supplies over the industrial temperature range.
The LT1990-10 is available in the 8-pin SO and pin FMEA
compatible MSOP packages.
Full-Bridge Load Current Monitor
APPLICATIONS
n
Gain = 10
n
–3dB Bandwidth = 100kHz
n
High Common Mode Voltage Range:
n
±250V (V
S
= ±15V)
n
85V Window (V
S
= 5V, 0V)
n
Common Mode Rejection Ratio: 60dB Min
n
Input Protection to ±350V
n
Gain Error: 0.8% Max
n
PSRR: 82dB Min
n
High Input Impedance: 2MΩ Differential,
500kΩ Common Mode
n
Micropower: 180µA Max Supply Current
n
Wide Supply Range: 2.7V to 36V
n
Rail-to-Rail Output
n
8-pin SO and pin FMEA Compatible MSOP Packages
n
Battery Cell Voltage Monitoring
n
High Voltage Current Sensing
n
Signal Acquisition in Noisy Environments
n
Input Protection
n
Fault Protected Front Ends
n
Level Sensing
n
Isolation
All registered trademarks and trademarks are the property of their respective owners.
R
S
+V
SOURCE
I
L
–12V ≤ V
CM
≤ 73V
V
OUT
= V
REF
± (10 • I
L
• R
S
)
–
+
40k
40k
100k
100k
900k
1M
1M
900k 10k
10k
V
OUT
LT1990-10
LT6650
GND
IN
OUT
FB
54.9k
20k
1nF
1µF
V
REF
= 1.5V
199010 TA01
5V
+
–
LT1990-10
2
Rev 0
For more information www.analog.com
PIN CONFIGURATION
ABSOLUTE MAXIMUM RATINGS
Total Supply Voltage (V
+
to V
–
).................................36V
Input Voltage Range
Each Input Continuous ...................................... ±250V
Each Input Transient (0.1s) ................................±350V
Differential ........................................................±500V
Output Short-Circuit Duration (Note 3) ............ Indefinite
(Notes 1, 2)
1
2
3
4
–IN
NC
NC
+IN
8
7
6
5
REF
V
+
OUT
V
–
TOP VIEW
MS8 PACKAGE
8-LEAD PLASTIC MSOP
T
JMAX
= 150°C, θ
JA
= 250°C/W
1
2
3
4
8
7
6
5
TOP VIEW
NC
V
+
OUT
NC
REF
–IN
+IN
V
–
S8 PACKAGE
8-LEAD PLASTIC SO
T
JMAX
= 150°C, θ
JA
= 190°C/W
ORDER INFORMATION
LEAD FREE FINISH TAPE AND REEL PART MARKING PACKAGE DESCRIPTION SPECIFIED TEMPERATURE RANGE
LT1990IS8-10#PBF LT1990IS8-10#TRPBF 199010 8-Lead Plastic SO –40°C to 85°C
LT1990IMS8-10#PBF LT1990IMS8-10#TRPBF LTHBQ 8-Lead Plastic MSOP –40°C to 85°C
Consult LTC Marketing for parts specified with wider operating temperature ranges.
For more information on tape and reel specifications, go to: Tape and reel specifications. Some packages are available in 500 unit reels through designated
sales channels with #TRMPBF suffix.
Operating Temperature Range (Note 4)
LT1990I-10 ......................................... –55°C to 125°C
Specified Temperature Range (Note 5)
LT1990I-10 ...........................................–40°C to 85°C
Junction Temperature ........................................... 150°C
Storage Temperature Range .................. –65°C to 150°C
Lead Temperature (Soldering, 10 sec.) ..................300°C
LT1990-10
3
Rev 0
For more information www.analog.com
3V/5V ELECTRICAL CHARACTERISTICS
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
G Gain 10
∆G Gain Error V
OUT
= 0.5V to (+V
S
) –0.75V 0.2 0.8 %
GNL Gain Nonlinearity V
S
= 5V, 0V; V
OUT
= 0.5V to 4.25V 0.01 %
V
CM
Input Voltage Range Guaranteed by CMRR
V
S
= 3V, 0V; V
REF
= 1.25V
V
S
= 5V, 0V; V
REF
= 1.25V
V
S
= 5V, 0V; V
REF
= 2.5V
-5
-5
-38
25
80
47
V
V
V
CMRR Common Mode Rejection Ratio
RTI (Referred to Input)
V
S
= 3V, 0V (Note 6)
V
CM
= –5V to 25V, V
REF
= 1.25V
60
72
dB
V
S
= 5V, 0V
V
CM
= –5V to 80V, V
REF
= 1.25V
60
72
dB
V
S
= 5V, 0V (Note 6)
V
CM
= –38V to 47V, V
REF
= 2.5V
60
72
dB
V
OS
Offset Voltage, RTI 0.8 3 mV
Input Noise Voltage, RTI f
O
= 0.1Hz to 10Hz 30 µV
P-P
e
n
Noise Voltage Density, RTI f
O
= 1kHz 1 µV/√Hz
R
IN
Input Resistance Differential
Common Mode
2
0.5
MΩ
MΩ
PSRR Power Supply Rejection Ratio, RTI V
S
= 2.7V to 12.7V, V
CM
= V
REF
= 1.25V 80 92 dB
Minimum Supply Voltage Guaranteed by PSRR 2.4 2.7 V
I
S
Supply Current (Note 7) 160 180 µA
V
OL
Output Voltage Swing LOW –IN = V
+
,
+IN = Half Supply (Note 7) 20 50 mV
V
OH
Output Voltage Swing HIGH –IN = 0V,
+IN = Half Supply
V
S
= 3V, 0V, Below V
+
V
S
= 5V, 0V, Below V
+
80
100
150
175
mV
mV
I
SC
Output Short-Circuit Current Short to GND (Note 8)
Short to V
+
(Note 8)
4
13
8
20
mA
mA
BW Bandwidth (–3dB) 100 kHz
SR Slew Rate V
S
= 5V, 0V, V
OUT
= 0.5V to 4.5V 1 V/µs
Settling Time to 0.01% 4V Output Step, V
S
= 5V, 0V 20 µs
AV
REF
Reference Gain to Output 1 ± 0.007
V
S
= V+, V–; V
S
= 3V, 0V; V
S
= 5V, 0V; R
L
= 10kΩ, V
CM
= V
REF
=
half supply, T
A
= 25°C, unless otherwise noted.
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LT1990IMS8-10#PBF

Mfr. #:
Buy LT1990IMS8-10#PBF
Manufacturer:
Analog Devices / Linear Technology
Description:
Differential Amplifiers +/-250V Difference Amplifier
Lifecycle:
New from this manufacturer.
Delivery:
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