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参数资料
| 型号： | LTC6102HMS8-1#PBF |
| 厂商： | LINEAR TECHNOLOGY CORP |
| 元件分类： | 模拟信号调理 |
| 英文描述： | SPECIALTY ANALOG CIRCUIT, PDSO8 |
| 封装： | LEAD FREE, PLASTIC, MSOP-8 |
| 文件页数： | 4/24页 |
| 文件大小： | 277K |
| 代理商： | LTC6102HMS8-1#PBF |
LTC6102
LTC6102-1/LTC6102HV
12
6102fc
Dynamic Range vs Maximum
Power Dissipation in RSENSE
APPLICATIONS INFORMATION
a signicant load on the power supply and create thermal
design headaches. In addition, heating in the sense resistor
can reduce its accuracy and reliability.
In contrast, the large dynamic range of the LTC6102 allows
the use of a much smaller sense resistor. The LTC6102
allows the minimum sense voltage to be reduced to less
than 10μV. The peak sense voltage would then be 10mV,
dissipating only 1W at 100A in a 100μΩ sense resistor!
With a specialized sense resistor, the same system would
allow peak currents of more than 1000A without exceeding
the input range of the LTC6102 or damaging the shunt.
Figure 2. Kelvin Input Connection Preserves Accuracy
with Large Load Current and Large Output Current
LTC6102
ROUT
VOUT
6102 F02
RIN
–
V+
LOAD
RSENSE
RIN
+
–
+
V+
–INF
V–
OUT
VREG
0.1μF
TIE AS CLOSE TO RIN AS POSSIBLE
–INS
+IN
LOAD
V+
V–
OUTPUT
RSENSE*
ROUT
LTC6102
RIN
–
RIN
+
CREG
*VISHAY VCS1625 SERIES
WITH 4 PAD KELVIN CONNECTION
V–
high-current paths, this error can be reduced by orders of
magnitude. A sense resistor with integrated Kelvin sense
terminals will give the best results. Figure 2 illustrates the
recommended method. Note that the LTC6102 has a Kelvin
input structure such that current ows into –INF. The –INS
and –INF pins should be tied as close as possible to RIN.
This reduces the parasitic series resistance so that RIN
may be as low as 1Ω, allowing high gain settings to be
used with very little gain error.
Sense Resistor Connection
Kelvin connection of +IN and –INS to the sense resistor
should be used in all but the lowest power applications.
Solder connections and PC board interconnections that
carry high current can cause signicant error in measure-
ment due to their relatively large resistances. One 10mm
× 10mm square trace of one-ounce copper is approxi-
mately 0.5mΩ. A 1mV error can be caused by as little
as 2A owing through this small interconnect. This will
cause a 1% error in a 100mV signal. A 10A load current
in the same interconnect will cause a 5% error for the
same 100mV signal. An additional error is caused by the
change in copper resistance over temperature, which is in
excess of 0.4%/°C. By isolating the sense traces from the
Selection of External Input Resistor, RIN
The external input resistor, RIN, controls the transconduc-
tance of the current sense circuit, IOUT = VSENSE/RIN. For
example, if RIN = 100, then IOUT = VSENSE/100 or IOUT =
1mA for VSENSE = 100mV.
RIN should be chosen to provide the required resolution
while limiting the output current. At low supply voltage,
IOUT may be as much as 1mA. By setting RIN such that
MAXIMUM POWER DISSIPATION (W)
DYNAMIC
RANGE
(dB)
110
100
90
80
70
60
50
40
30
20
6102 AI01
0.001
0.01
0.1
1
10
100
MAX ISENSE = 1A
MAX ISENSE = 10A
MAX ISENSE = 100A
DYNAMIC RANGE RELATIVE
TO 10μV, MINIMUM VSENSE
RSENSE = 10mΩ
RSENSE = 100mΩ
100dB: MAX
VSENSE = 1V
40dB: MAX
VSENSE = 1mV
RSENSE = 10μΩ
RSENSE = 100μΩ
RSENSE = 1Ω
RSENSE = 1mΩ
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC6102HMS8-PBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:Precision Zero Drift Current Sense Amplifi er |
| LTC6102HMS8-TRPBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:Precision Zero Drift Current Sense Amplifi er |
| LTC6102HV | 制造商:LINER 制造商全称:Linear Technology 功能描述:High Voltage, Bidirectional Current Sense Amplifier Low Power Shutdown <10μA |
| LTC6102HVCDD#PBF | 功能描述:IC AMP CURRENT SENSE 8-DFN RoHS:是 类别:集成电路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 产品培训模块:Differential Circuit Design Techniques for Communication Applications 标准包装:1 系列:- 放大器类型:RF/IF 差分 电路数:1 输出类型:差分 转换速率:9800 V/µs 增益带宽积:- -3db带宽:2.9GHz 电流 - 输入偏压:3µA 电压 - 输入偏移:- 电流 - 电源:40mA 电流 - 输出 / 通道:- 电压 - 电源，单路/双路(±):3 V ~ 3.6 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:16-VQFN 裸露焊盘，CSP 供应商设备封装:16-LFCSP-VQ 包装:剪切带 (CT) 产品目录页面:551 (CN2011-ZH PDF) 其它名称:ADL5561ACPZ-R7CT |
| LTC6102HVCDD#TRPBF | 功能描述:IC AMP CURRENT SENSE 8-DFN RoHS:是 类别:集成电路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 标准包装:50 系列:LinCMOS™ 放大器类型:通用 电路数:4 输出类型:- 转换速率:0.05 V/µs 增益带宽积:110kHz -3db带宽:- 电流 - 输入偏压:0.7pA 电压 - 输入偏移:210µV 电流 - 电源:57µA 电流 - 输出 / 通道:30mA 电压 - 电源，单路/双路(±):3 V ~ 16 V，±1.5 V ~ 8 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:14-SOIC（0.154"，3.90mm 宽） 供应商设备封装:14-SOIC 包装:管件 产品目录页面:865 (CN2011-ZH PDF) 其它名称:296-1834296-1834-5 |
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