参数资料
型号: ISL84467IVZ
厂商: Intersil
文件页数: 11/13页
文件大小: 0K
描述: IC SWITCH QUAD SPDT 16TSSOP
标准包装: 960
功能: 开关
电路: 4 x SPDT
导通状态电阻: 400 毫欧
电压电源: 单电源
电压 - 电源,单路/双路(±): 1.65 V ~ 4.5 V
电流 - 电源: 150nA
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 16-TSSOP(0.173",4.40mm 宽)
供应商设备封装: 16-TSSOP
包装: 管件
7
FN6521.1
July 23, 2008
Detailed Description
The ISL84467 is a bidirectional, quad single pole/double
throw (SPDT) analog switch that offers precise switching
capability from a single 1.65V to 4.5V supply with low
ON-resistance (0.39
Ω) and high speed operation (t
ON = 33ns,
tOFF = 16ns). The device is especially well suited for portable
battery powered equipment due to its low operating supply
voltage (1.65V), low power consumption (6.3W max), low
leakage currents (165nA max), and the tiny TQFN package.
The ultra low ON-resistance and rON flatness provide very low
insertion loss and distortion to applications that require signal
reproduction.
External V+ Series Resistor
For improved ESD and latch-up immunity, Intersil
recommends adding a 100
Ω resistor in series with the V+
power supply pin of the ISL84467 IC (see Figure 8).
During an overvoltage transient event, such as occurs during
system level IEC 61000 ESD testing, substrate currents can be
generated in the IC that can trigger parasitic SCR structures to
turn ON, creating a low impedance path from the V+ power
supply to ground. This will result in a significant amount of
current flow in the IC which can potentially create a latch-up
state or permanently damage the IC. The external V+
resistor limits the current during this over-stress situation
and has been found to prevent latch-up or destructive
damage for many overvoltage transient events.
Under normal operation, the sub-microamp IDD current of
the IC produces an insignificant voltage drop across the
100
Ω series resistor resulting in no impact to switch
operation or performance.
FIGURE 4. OFF ISOLATION TEST CIRCUIT
FIGURE 5. rON TEST CIRCUIT
FIGURE 6. CROSSTALK TEST CIRCUIT
FIGURE 7. CAPACITANCE TEST CIRCUIT
Test Circuits and Waveforms (Continued)
ANALYZER
RL
SIGNAL
GENERATOR
V+
C
0V or V+
NO or NC
COM
IN
GND
V+
C
IN
GND
VNX
V1
rON = V1/100mA
100mA
NO or NC
0V or V+
COM
0V or V+
ANALYZER
V+
C
NO or NC
SIGNAL
GENERATOR
RL
GND
IN1
50
Ω
NC
COM
NC or NO
V+
C
GND
NO or NC
COM
IN
IMPEDANCE
ANALYZER
0V or V+
ISL84467
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