參數(shù)資料
型號(hào): MAX4556CPE
廠商: MAXIM INTEGRATED PRODUCTS INC
元件分類: 運(yùn)動(dòng)控制電子
英文描述: Force-Sense Switches
中文描述: TRIPLE 1-CHANNEL, SGL POLE DOUBLE THROW SWITCH, PDIP16
封裝: PLASTIC, DIP-16
文件頁數(shù): 17/28頁
文件大小: 281K
代理商: MAX4556CPE
M
Forc e-S ense S witc hes
______________________________________________________________________________________
17
LEAKAGE CURRENT
LEAKAGE CURRENT
GUARD AMPLIFIER
GUARD AMPLIFIER
VOLTAGE SOURCE
V
V+
V-
V+
V-
V+
V-
V+
V-
V
V-
CURRENT SENSE
FORCE-SENSE AMPLIFIER
-DRIVEN GUARD
-SENSE
-FORCE
+FORCE
+SENSE
+DRIVEN GUARD
TWINAX CABLE
TWINAX CABLE
FORCE-SENSE AMPLIFIER
CURRENT SENSE
8-WIRE PRECISION SOURCE-MONITOR
LOAD
V
Figure 3. 8-Wire Guarded Force-Sense Measurements
Note that although the positive and negative circuits are
identical, they are not redundant. Both are always used,
even when one side of the load is grounded, because
maintaining a precision output voltage requires losses in
the ground leads to be corrected by a force-sense
amplifier. If more than one power supply and load are
operated together, and they have a common connec-
tion, this requirement becomes even more critical.
Separate 8-wire connections prevent current changes in
one load from changing voltage in the other load.
12-Wire Measurements
Figure 4 shows a 12-wire circuit, which is an elabora-
tion of the 8-wire system using separate driven guards
for the force and sense wires. Four sets of triaxial
cables and connectors are used. The extra wires are
used for two reasons: 1) They provide better shielding
by having separate chassis grounds on each cable,
rather than separate ground wires external to the signal
cables; 2) In test equipment, where connection
changes are frequent, it is very convenient to use four
triax connectors or two quadrax (dual triax) connectors
for each load.
In addition, this method is slightly better for power sup-
plies or measurements that switch between constant
voltage and constant current, since separate driven
guards reduce circuit capacitance. Also, when trou-
bleshooting, it is convenient to be able to interchange
force and sense leads.
相關(guān)PDF資料
PDF描述
MAX4556CSE Force-Sense Switches
MAX4556EPE Force-Sense Switches
MAX4556ESE Force-Sense Switches
MAX4555EPE Force-Sense Switches
MAX4555ESE Force-Sense Switches
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MAX4556CSE+ 功能描述:模擬開關(guān) IC RoHS:否 制造商:Texas Instruments 開關(guān)數(shù)量:2 開關(guān)配置:SPDT 開啟電阻(最大值):0.1 Ohms 切換電壓(最大): 開啟時(shí)間(最大值): 關(guān)閉時(shí)間(最大值): 工作電源電壓:2.7 V to 4.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:DSBGA-16
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