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參數(shù)資料
| 型號： | LT1999HS8-50#PBF |
| 廠商： | Linear Technology |
| 文件頁數(shù)： | 10/24頁 |
| 文件大小： | 0K |
| 描述： | IC OP AMP CURRENT SENSE 8-SOIC |
| 標(biāo)準(zhǔn)包裝： | 100 |
| 放大器類型： | 電流檢測 |
| 電路數(shù)： | 1 |
| 輸出類型： | 帶緩沖 |
| 轉(zhuǎn)換速率： | 3 V/µs |
| -3db帶寬： | 1.2MHz |
| 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： | -40°C ~ 125°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 |
LT1999-10/LT1999-20/
LT1999-50
18
1999fb
applicaTions inForMaTion
VOUT
VREF
VSHDN
LT1999
4k
0.8k
160k
2A
0.8k
4k
SHDN
V+
+
–
+
–
8
1
2
3
4
7
6
5
RG
V+
VS
5V
1999 F05
0.1F
FUSE
STEERING
DIODE
LOAD
ILOAD
RSENSE
OFF
ON
5V
VOUT
V+IN
V–IN
VREF
VSHDN
Figure 5. Using the LT1999 to Monitor a Fuse
Fuse Monitor
The inputs can be overdriven without fear of damaging
the LT1999. This makes the LT1999 ideal for monitoring
fuses if either +IN or –IN are shorted to ground while the
other is at the full common mode supply voltage (see
Figure 5). If the fuse in Figure 5 opens with the +IN tied
to the positive supply, the load will pull –IN to GND. The
output will be forced to the positive V+ supply rail. If it is
desired that the output be near ground if the fuse opens,
it is a simple matter of swapping the inputs. Precautions
should be followed: First, when the inputs are stressed
differentially due to the fuse blowing open, a large voltage
drop will be placed across the +IN to –IN pins, dissipating
power in the precision on-chip input resistors. Precaution
should be taken to prevent junction temperatures from
exceedingtheAbsoluteMaximumratings(seeNote3inthe
Electrical Characteristics section). Secondly, if the load is
inductive, and the fuse blows open without a clamp diode,
energy stored in the inductive load will be dissipated in
the LT1999, which could cause damage. A simple steering
diode as shown in Figure 5 will prevent this from happen-
ing, and will protect the LT1999 from damage.
Finally, the user should be aware that in fuse monitoring
applications with the sense voltage (VSENSE = V+IN – V–IN)
being driven in excess of –25V, the output of the LT1999
will undergo phase reversal (see Figure 6).
Figure 6. A Plot of the LT1999’s Output Voltage vs VSENSE (VSENSE = V+IN – V–IN).
In Applications Where the Sense Voltage Is Driven in Excess of –25V, the Output
of the LT1999 Will Undergo Phase Reversal
VSENSE (V)
–60
V OUT
(1V
/DIV)
–30
–45
–15
30
1999 F06
60
15
45
0
VOUT PHASE REVERSAL FOR VSENSE < –25V
VREF = 2.5V
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參數(shù)描述 |
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| LT1999IMS8-10 | 制造商:LINER 制造商全稱:Linear Technology 功能描述:High Voltage, Bidirectional Current Sense Amplifier Low Power Shutdown <10μA |
| LT1999IMS8-10#PBF | 功能描述:IC OP AMP CURRENT SENSE 8-MSOP RoHS:是 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 標(biāo)準(zhǔn)包裝:2,500 系列:- 放大器類型:通用 電路數(shù):4 輸出類型:- 轉(zhuǎn)換速率:0.6 V/µs 增益帶寬積:1MHz -3db帶寬:- 電流 - 輸入偏壓:45nA 電壓 - 輸入偏移:2000µV 電流 - 電源:1.4mA 電流 - 輸出 / 通道:40mA 電壓 - 電源，單路/雙路(±):3 V ~ 32 V，±1.5 V ~ 16 V 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:14-TSSOP（0.173"，4.40mm 寬） 供應(yīng)商設(shè)備封裝:14-TSSOP 包裝:帶卷 (TR) 其它名稱:LM324ADTBR2G-NDLM324ADTBR2GOSTR |
| LT1999IMS8-10#TRPBF | 功能描述:IC OP AMP CURRENT SENSE 8MSOP RoHS:是 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 標(biāo)準(zhǔn)包裝:50 系列:LinCMOS™ 放大器類型:通用 電路數(shù):4 輸出類型:- 轉(zhuǎn)換速率:0.05 V/µs 增益帶寬積:110kHz -3db帶寬:- 電流 - 輸入偏壓:0.7pA 電壓 - 輸入偏移:210µV 電流 - 電源:57µA 電流 - 輸出 / 通道:30mA 電壓 - 電源，單路/雙路(±):3 V ~ 16 V，±1.5 V ~ 8 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:14-SOIC（0.154"，3.90mm 寬） 供應(yīng)商設(shè)備封裝:14-SOIC 包裝:管件 產(chǎn)品目錄頁面:865 (CN2011-ZH PDF) 其它名稱:296-1834296-1834-5 |
| LT1999IMS8-20 | 制造商:LINER 制造商全稱:Linear Technology 功能描述:High Voltage, Bidirectional Current Sense Amplifier Low Power Shutdown <10μA |
| LT1999IMS8-20#PBF | 功能描述:IC OP AMP CURRENT SENSE 8-MSOP RoHS:是 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 標(biāo)準(zhǔn)包裝:2,500 系列:- 放大器類型:通用 電路數(shù):4 輸出類型:- 轉(zhuǎn)換速率:0.6 V/µs 增益帶寬積:1MHz -3db帶寬:- 電流 - 輸入偏壓:45nA 電壓 - 輸入偏移:2000µV 電流 - 電源:1.4mA 電流 - 輸出 / 通道:40mA 電壓 - 電源，單路/雙路(±):3 V ~ 32 V，±1.5 V ~ 16 V 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:14-TSSOP（0.173"，4.40mm 寬） 供應(yīng)商設(shè)備封裝:14-TSSOP 包裝:帶卷 (TR) 其它名稱:LM324ADTBR2G-NDLM324ADTBR2GOSTR |
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