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LT1990IS8 Datasheet

  • LT1990IS8

  • 250V Input Range G = 1, 10, Micropower, Difference Amplifier

  • 16頁

  • LINER

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LT1990
鹵250V
Input Range
G = 1, 10, Micropower,
Difference Amplifier
DESCRIPTIO
The LT
廬
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
鹵250V
common mode voltage range on a
鹵15V
supply. The inputs are fault protected from common
mode voltage transients up to
鹵350V
and differential
voltages up to
鹵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 120碌A(chǔ)
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
鹵15V
supplies over both commercial and industrial temperature
ranges. The LT1990 is available in the 8-pin SO package.
, LTC and LT are registered trademarks of Linear Technology Corporation.
APPLICATIO S
鈻?/div>
鈻?/div>
鈻?/div>
鈻?/div>
鈻?/div>
鈻?/div>
鈻?/div>
鈻?/div>
鈻?/div>
鈻?/div>
鈻?/div>
鈻?/div>
Pin Selectable Gain of 1 or 10
High Common Mode Voltage Range:
85V Window (V
S
= 5V, 0V)
鹵250V
(V
S
=
鹵15V)
Common Mode Rejection Ratio: 70dB Min
Input Protection to
鹵350V
Gain Error: 0.28% Max
PSRR: 82dB Min
High Input Impedance: 2M鈩?Differential,
500k鈩?Common Mode
Micropower: 120碌A(chǔ) Max Supply Current
Wide Supply Range: 2.7V to 36V
鈥?dB Bandwidth: 100kHz
Rail-to-Rail Output
8-Pin SO Package
FEATURES
鈻?/div>
鈻?/div>
鈻?/div>
鈻?/div>
鈻?/div>
鈻?/div>
鈻?/div>
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
鈥?+
I
L
R
S
3
V
REF
= 1.5V
4
OUT
IN
LT6650
GND FB
54.9k
1nF
40k
40k
20k
1
1碌F
1990 TA01
1M
鈥?2V
鈮?/div>
V
CM
鈮?/div>
73V
V
OUT
= V
REF
鹵
(10 鈥?I
L
鈥?R
S
)
U
鈥?/div>
+
U
U
6
V
OUT
10k
900k
100k
5
1990f
1

LT1990IS8 產(chǎn)品屬性

  • LT1990

  • 100

  • 集成電路 (IC)

  • Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

  • -

  • 差分

  • 1

  • 滿擺幅

  • 0.55 V/µs

  • -

  • 105kHz

  • -

  • 900µV

  • 140µA

  • 22mA

  • 2.7 V ~ 36 V，±1.35 V ~ 18 V

  • -40°C ~ 85°C

  • 表面貼裝

  • 8-SOIC（0.154"，3.90mm 寬）

  • 8-SO

  • 管件

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