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參數(shù)資料
| 型號： | LTC6102IMS#TRPBF |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 模擬信號調(diào)理 |
| 英文描述： | SPECIALTY ANALOG CIRCUIT, PDSO8 |
| 封裝： | LEAD FREE, PLASTIC, MSOP-8 |
| 文件頁數(shù)： | 6/20頁 |
| 文件大?。?/td> | 257K |
| 代理商： | LTC6102IMS#TRPBF |
LTC6102/LTC6102HV
14
6102fa
Figure 7. Voltage Level-Shift Circuit
Figure 8. Schottky Prevents Damage During Supply Reversal
APPLICATIONS INFORMATION
Again, very large voltages may be sensed as long as RIN
is chosen so that IOUT does not exceed the allowed output
current. For example, VIN may be as large as 1V with RIN =
1k, or as large as 10V with RIN = 10k. For a 10V maximum
input and a 5V maximum output, RIN = 10k and ROUT = 5k
will allow the LTC6102HV to translate VIN to VOUT with a
common mode voltage of up to 100V. For the case where
a large input resistor is used, a similar resistor in series
with +IN will reduce error due to input bias current.
Reverse Supply Current
Some applications may be tested with reverse-polarity
supplies due to an expectation of this type of fault during
operation. The LTC6102 is not protected internally from
external reversal of supply polarity. To prevent damage
that may occur during this condition, a Schottky diode
should be added in series with V– (Figure 8). This will
limit the reverse current through the LTC6102. Note that
this diode will limit the low voltage performance of the
LTC6102 by effectively reducing the supply voltage to the
part by VD.
Because the voltage across RSENSE is not restricted to
the sense range of the LTC6102 in this circuit, VSENSE
can be large compared to the allowed sense voltage. This
facilitates the sensing of very large voltages, provided
that RIN is chosen so that VSENSE/RIN does not exceed
the allowed output current. The gain is still controlled by
ROUT/RIN, so either gain or attenuation may be applied to
the input signal as it is translated to the output. Finally,
the input may be a voltage source rather than a sense
resistor, as shown in Figure 7. This circuit allows the
translation of a wide variety of input signals across the
entire supply range of the LTC6102 with only a tiny offset
error while retaining simple gain control set by ROUT/RIN.
Figure 6. LTC6102 Supply Current Monitored with Load
–INF
–INS
LTC6102
ROUT
VOUT
6102 F06
RIN
LOAD
VBAT
RSENSE
V+
V–
OUT
+IN
VREG
0.1μF
–
+
–INF
–INS
LTC6102
ROUT
VOUT
6102 F07
RIN
VIN
VCM
V+
V–
OUT
+IN
VREG
0.1μF
–
+
VOUT = VIN
ROUT
RIN
6102 F08
LTC6102
R2
4.99k
D1
R1
100
VBATT
RSENSE
L
O
A
D
–
+
V+
V–
–INF
OUT
–INS
+IN
VREG
0.1μF
In addition, if the output of the LTC6102 is wired to a device
that will effectively short it to high voltage (such as through
an ESD protection clamp) during a reverse supply condi-
tion, the LTC6102’s output should be connected through
a resistor or Schottky diode (Figure 9).
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| LTC6103CMS8#TRPBF | 功能描述:IC 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:50 系列:- 放大器類型:通用 電路數(shù):2 輸出類型:滿擺幅 轉(zhuǎn)換速率:1.8 V/µs 增益帶寬積:6.5MHz -3db帶寬:4.5MHz 電流 - 輸入偏壓:5nA 電壓 - 輸入偏移:100µV 電流 - 電源:65µA 電流 - 輸出 / 通道:35mA 電壓 - 電源，單路/雙路(±):1.8 V ~ 5.25 V，±0.9 V ~ 2.625 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:10-TFSOP，10-MSOP（0.118"，3.00mm 寬） 供應(yīng)商設(shè)備封裝:10-MSOP 包裝:管件 |
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