参数资料
| 型号： | LTC6103HMS8#TRPBF |
| 厂商： | Linear Technology |
| 文件页数： | 15/16页 |
| 文件大小： | 0K |
| 描述： | IC AMP CURRENT SENSE 8-MSOP |
| 标准包装： | 2,500 |
| 放大器类型： | 电流检测 |
| 电路数： | 2 |
| 增益带宽积： | 140kHz |
| 电流 - 输入偏压： | 100nA |
| 电压 - 输入偏移： | 85µV |
| 电流 - 电源： | 390µA |
| 电流 - 输出 / 通道： | 1mA |
| 电压 - 电源，单路/双路(±)： | 4 V ~ 60 V，±2 V ~ 30 V |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-TSSOP，8-MSOP（0.118"，3.00mm 宽） |
| 供应商设备封装： | 8-MSOP |
| 包装： | 带卷 (TR) |
LTC6103
8
6103f
APPLICATIONS INFORMATION
Sense Resistor Connection
Kelvin connections should be used between the inputs (+IN
and –IN) and the sense resistor in all but the lowest power
applications. Solder connections and PC board intercon-
nections that carry high current can cause signicant error
in measurement due to their relatively large resistances.
One 10mm
× 10mm square trace of one-ounce copper
is approximately 0.5m
Ω. 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. By isolating the sense traces
from the 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.
Selection of External Input Resistor, RIN
The external input resistor, RIN, controls the trans-
conductance of the current sense circuit. Since:
I
V
R
OUT
SENSE
IN
=
, transconductance g
=
1
R
m
IN
For example, if RIN = 100Ω, then:
I
V
OUT
SENSE
=
100
or IOUT = 1mA for VSENSE = 100mV.
RIN should be chosen to allow the required resolution
while limiting the output current. At low supply voltage,
IOUT may be as much as 1mA. By setting RIN such that
the largest expected sense voltage gives IOUT = 1mA, then
the maximum output dynamic range is available. Output
dynamic range is limited by both the maximum allowed
output current and the maximum allowed output voltage,
as well as the minimum practical output signal. If less
dynamic range is required, then RIN can be increased
accordingly, reducing the maximum output current and
power dissipation. If low sense currents must be resolved
accurately in a system that has very wide dynamic range,
a smaller RIN than the maximum current specication
allows may be used if the maximum current is limited in
another way, such as with a Schottky diode across RSENSE
(Figure 3a). This will reduce the high current measurement
accuracy by limiting the result, while increasing the low
current measurement resolution.
This approach can be helpful in cases where occasional
large burst currents may be ignored. It can also be used
in a multi-range conguration where a low current circuit
is added to a high current circuit (Figure 3b). Note that a
comparator (LTC1540) is used to select the range, and
transistor M1 limits the voltage across RSENSE(LO).
Figure 2. Kelvin Input Connection Preserves
Accuracy Despite Large Load Current
Figure 3a. Shunt Diode Limits Maximum Input Voltage to Allow
Better Low Input Resolution Without Overranging
+
–
+IN
OUT
VS
1/2
LTC6103
–IN
RIN
RSENSE
V+
V–
ROUT
6103 F02
LOAD
ILOAD
V+
LOAD
DSENSE
6103 F03a
RSENSE
相关PDF资料 |
PDF描述 |
|---|---|
| LTC6104CMS8#PBF | IC AMP CURRENT SENSE 8-MSOP |
| LTC6242CGN#TRPBF | IC OP AMP QUAD R-R 16-SSOP |
| LTC6244HVCDD#TRPBF | IC OP AMP DUAL R-R 8-DFN |
| LTC6247CTS8#TRPBF | IC OPAMP RRIO 180MHZ DL TSOT23-8 |
| LTC6253CTS8#TRPBF | IC OPAMP R-R 720MHZ TSOT23-8 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC6103IMS8 | 制造商:Linear Technology 功能描述:OP Amp Dual GP 60V 8-Pin MSOP |
| LTC6103IMS8#PBF | 功能描述:IC AMP CURRENT SENSE 8-MSOP 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 |
| LTC6103IMS8#TR | 制造商:Linear Technology 功能描述:OP Amp Dual GP 60V 8-Pin MSOP T/R |
| LTC6103IMS8#TRPBF | 功能描述:IC AMP CURRENT SENSE 8-MSOP RoHS:是 类别:集成电路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 标准包装:50 系列:- 放大器类型:通用 电路数:2 输出类型:满摆幅 转换速率:1.8 V/µs 增益带宽积:6.5MHz -3db带宽:4.5MHz 电流 - 输入偏压:5nA 电压 - 输入偏移:100µV 电流 - 电源:65µA 电流 - 输出 / 通道:35mA 电压 - 电源，单路/双路(±):1.8 V ~ 5.25 V，±0.9 V ~ 2.625 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:10-TFSOP，10-MSOP（0.118"，3.00mm 宽） 供应商设备封装:10-MSOP 包装:管件 |
| LTC6103IMS8PBF | 制造商:Linear Technology 功能描述:Op Amp Dual General Purpose 60V MSOP8 |
发布紧急采购，3分钟左右您将得到回复。