參數(shù)資料
型號: LT1990IS8#PBF
廠商: Linear Technology
文件頁數(shù): 1/16頁
文件大?。?/td> 0K
描述: IC AMP DIFF +/-250V MCRPWR 8SOIC
標(biāo)準(zhǔn)包裝: 100
放大器類型: 差分
電路數(shù): 1
輸出類型: 滿擺幅
轉(zhuǎn)換速率: 0.55 V/µs
-3db帶寬: 105kHz
電壓 - 輸入偏移: 900µV
電流 - 電源: 140µA
電流 - 輸出 / 通道: 22mA
電壓 - 電源,單路/雙路(±): 2.7 V ~ 36 V,±1.35 V ~ 18 V
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 8-SOIC(0.154",3.90mm 寬)
供應(yīng)商設(shè)備封裝: 8-SO
包裝: 管件
LT1990
1
1990fb
Battery Cell Voltage Monitoring
High Voltage Current Sensing
Signal Acquisition in Noisy Environments
Input Protection
Fault Protected Front Ends
Level Sensing
Isolation
Pin Selectable Gain of 1 or 10
High Common Mode Voltage Range:
85V Window (VS = 5V, 0V)
±250V (VS = ±15V)
Common Mode Rejection Ratio: 70dB Min
Input Protection to
±350V
Gain Error: 0.28% Max
PSRR: 82dB Min
High Input Impedance: 2M
Differential,
500k
Common Mode
Micropower: 120
A Max Supply Current
Wide Supply Range: 2.7V to 36V
–3dB Bandwidth: 100kHz
Rail-to-Rail Output
8-Pin SO Package
±250V Input Range
G = 1, 10, Micropower,
Difference Amplifier
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.TheLT1990isideallysuitedforboth
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
A
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.
Full-Bridge Load Current Monitor
RS
+VSOURCE
IL
–12V
≤ VCM ≤ 73V
VOUT = VREF ± (10 IL RS)
+
40k
100k
900k
1M
900k
10k
VOUT
LT1990
LT6650
GND
IN
OUT
FB
54.9k
20k
1nF
1
F
VREF = 1.5V
1990 TA01
5V
7
2
3
4
1
8
6
5
+
APPLICATIO S
U
DESCRIPTIO
U
FEATURES
TYPICAL APPLICATIO
U
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
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