參數(shù)資料
型號(hào)： LT1999MPS8-20#PBF
廠商： Linear Technology
文件頁(yè)數(shù)： 11/24頁(yè)
文件大?。?/td> 0K
描述： IC AMP CURR SENSE HV 8-MSOP
標(biāo)準(zhǔn)包裝： 100
放大器類型： 電流檢測(cè)
電路數(shù)： 1
輸出類型： 帶緩沖
轉(zhuǎn)換速率： 3 V/µs
-3db帶寬： 2MHz
電流 - 輸入偏壓： 137.5µA
電壓 - 輸入偏移： 500µV
電流 - 電源： 5.8mA
電流 - 輸出 / 通道： 40mA
電壓 - 電源，單路/雙路(±)： 4.5 V ~ 5.5 V
工作溫度： -55°C ~ 150°C
安裝類型： 表面貼裝
封裝/外殼： 8-TSSOP，8-MSOP（0.118"，3.00mm 寬）
供應(yīng)商設(shè)備封裝： 8-MSOP
包裝： 管件
LT1999-10/LT1999-20/
LT1999-50
19
1999fb
Typical applicaTions
Solenoid Current Monitor
The solenoid of Figure 7 consists of a coil of wire in an
iron case with permeable plunger that acts as a movable
element.WhentheMOSFETturnson,thediodeisreversed
biased off, and current flows through RSENSE to actuate
the solenoid. If the MOSFET is turned off, the current
in the MOSFET is interrupted, but the energy stored in
the solenoid causes the diode to turn on and current to
freewheel in the loop consisting of the diode, RSENSE and
the solenoid.
Figure 7 shows the LT1999 monitoring currents in a
ground referenced solenoid used when the coil is hard
tied to the case, and is tied to ground. Figure 8 shows a
supply referenced solenoid whose coil is insulated from
the case. The LT1999 will interface equally well to either
of these two configurations.
Bidirectional PWM Motor Monitor
Pulse width modulation is commonly used to efficiently
vary the average voltage applied across a DC motor. The
H-bridgetopologyofFigure9allowsfull4-quadrantcontrol:
clockwise control, counter-clockwise control, clockwise
regeneration, and counter-clockwise regeneration. The
LT1999 in conjunction with a non-inductive current shunt
is used to monitor currents in the rotor. The LT1999 can
be used to detect stuck rotors, provide detection of over-
current conditions in general, or provide current mode
feedback control.
Figure 10 shows a plot of the output voltage of the LT1999.
Figure 7. Solenoid Current Monitor for Ground Tied Solenoid. The Common Mode
Inputs to the LT1999 Switch Between VS and One Diode Drop Below Ground
LT1999
4k
0.8k
160k
2A
0.8k
4k
SHDN
V+
+
–
+
–
8
1
2
3
4
7
6
5
RG
V+
TIME (50ms/DIV)
V OUT
(0.5V/DIV)
V
+IN
(10V/DIV)
5V
VS
5V
1999 F07a
1999 F07b
0.1F
SOLENOID
RSENSE
V+IN
VSHDN
VOUT
VREF
V–IN
ON
OFF
VOUT
V+IN
SOLENOID PLUNGER PULLS IN
SOLENOID RELEASES
2.5V
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LT1999MPS8-50#PBF 功能描述:IC AMP CURR SENSE HV 8-MSOP RoHS:是 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 標(biāo)準(zhǔn)包裝:50 系列:- 放大器類型:J-FET 電路數(shù):2 輸出類型:- 轉(zhuǎn)換速率:3.5 V/µs 增益帶寬積:1MHz -3db帶寬:- 電流 - 輸入偏壓:30pA 電壓 - 輸入偏移:2000µV 電流 - 電源:200µA 電流 - 輸出 / 通道:- 電壓 - 電源，單路/雙路(±):7 V ~ 36 V，±3.5 V ~ 18 V 工作溫度:0°C ~ 70°C 安裝類型:通孔 封裝/外殼:8-DIP（0.300"，7.62mm） 供應(yīng)商設(shè)備封裝:8-PDIP 包裝:管件
LT1999MPS8-50#TRPBF 功能描述:IC AMP CURR SENSE HV 8-MSOP RoHS:是 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 標(biāo)準(zhǔn)包裝:150 系列:- 放大器類型:音頻 電路數(shù):2 輸出類型:- 轉(zhuǎn)換速率:5 V/µs 增益帶寬積:12MHz -3db帶寬:- 電流 - 輸入偏壓:100nA 電壓 - 輸入偏移:500µV 電流 - 電源:6mA 電流 - 輸出 / 通道:50mA 電壓 - 電源，單路/雙路(±):4 V ~ 32 V，±2 V ~ 16 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:8-TSSOP（0.173"，4.40mm 寬） 供應(yīng)商設(shè)備封裝:8-TSSOP 包裝:管件
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LT1A-0112M 制造商:IDEC CORPORATION 功能描述:1TIER 24V STDY ALUM
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