参数资料
型号: MAX4690EWE+T
厂商: Maxim Integrated Products
文件页数: 11/12页
文件大小: 0K
描述: IC SWITCH DUAL SPST 16SOIC
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 1,000
功能: 开关
电路: 2 x SPST - NO
导通状态电阻: 1.25 欧姆
电压电源: 单/双电源
电压 - 电源,单路/双路(±): 4.5 V ~ 36 V,±4.5 V ~ 20 V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 16-SOIC(0.295",7.50mm 宽)
供应商设备封装: 16-SOIC W
包装: 带卷 (TR)
MAX4680/MAX4690/MAX4700
1.25
, Dual SPST,
CMOS Analog Switches
8
_______________________________________________________________________________________
___________Applications Information
Overvoltage Protection
Proper power-supply sequencing is recommended for
all CMOS devices. Do not exceed the absolute maxi-
mum ratings because stresses beyond the listed rat-
ings can cause permanent damage to the devices.
Always sequence V+ on first, then V-, followed by the
logic inputs, NO, or COM. If power-supply sequencing
is not possible, add two small signal diodes (D1, D2) in
series with the supply pins and a Schottky diode
between V+ and VL for overvoltage protection (Figure
1). Adding diodes reduces the analog signal range to
one diode drop below V+ and one diode drop above V-,
but does not affect the devices’ low switch resistance
and low-leakage characteristics. Device operation is
unchanged, and the difference between V+ and V-
should not exceed 44V.
COM_
VL
V-
V+
NO_
* INTERNAL PROTECTION DIODES
D2
D1
-15V
+15V
MAX4680
MAX4690
MAX4700
*
tr < 20ns
tf < 20ns
50%
0
LOGIC
INPUT
V-
-15V
RL
100
NO_
OR NC_
GND
CL INCLUDES FIXTURE AND STRAY CAPACITANCE.
SWITCH
INPUT
IN_
+3V
tOFF
0
COM_
SWITCH
OUTPUT
0.9V0
tON
VO
SWITCH
OUTPUT
LOGIC
INPUT
LOGIC INPUT WAVEFORMS INVERTED FOR SWITCHES
THAT HAVE THE OPPOSITE LOGIC SENSE.
VL
V+
CL
35pF
+5V
+15V
VO
VCOM_
0
REPEAT TEST FOR EACH SWITCH. FOR LOAD
CONDITIONS, SEE
Electrical Characteristics.
MAX4680
MAX4690
MAX4700
VO = VCOM
(
)
RL + RON
RL
Figure 1. Overvoltage Protection Using External Blocking Diodes
Figure 2. Switching-Time Test Circuit
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