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ADGM3121BCCZ-R2 数据表(PDF) 23 Page - Analog Devices

部件名 ADGM3121BCCZ-R2
功能描述  3mm × 3mm DPDT MEMS Switch, 0Hz/DC to 24GHz
PDF  33 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
制造商  AD [Analog Devices]
网页  http://www.analog.com
标志 AD - Analog Devices

ADGM3121BCCZ-R2 数据表(HTML) 23 Page - Analog Devices

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Data Sheet
ADGM3121
THEORY OF OPERATION
analog.com
Rev. 0 | 23 of 33
SWITCH DESIGN
The ADGM3121 is a wideband DPDT switch fabricated using An-
alog Devices' MEMS switch technology. This technology enables
high power, low loss, low distortion gigahertz switches to be realiz-
ed for demanding RF applications.
A key strength of the MEMS switch is that it simultaneously brings
together best-in-class high frequency RF performance and 0Hz/DC
precision performance. This combination coupled with superior
reliability and a tiny surface mountable form factor make the MEMS
switch the ideal switching solution for all RF and precision signal
instrumentation needs.
The switches are electrostatically actuated MEMS structures. An
on board charge pump internally generates the bias voltage (80V)
used for actuation of the switch.
PARALLEL DIGITAL INTERFACE
The ADGM3121 can be controlled through a parallel interface.
Standard complementary metal-oxide semiconductor (CMOS) or
low voltage transistor to transistor logic (LVTTL) signals applied
through this interface control the independent actuation or release
of all the switch channels of the ADGM3121.
Setting Pin 19 (PIN/SPI) low enables the parallel control interface.
Pin 20, Pin 21, Pin 22, and Pin 23 (IN1, IN2, IN3, and IN4) control
the switching functions of the ADGM3121. When a Logic 1 is
applied to one of these pins, the corresponding switch turns on.
Conversely, when a Logic 0 is applied, the switch turns off. See
Table 7 for the truth table.
When no supply voltage is applied to Pin 1 (VDD), all switches are in
an indeterminate state.
Table 7. Truth Table in Parallel Digital Interface Mode
IN1
IN2
IN3
IN4
RF1A to RFCA
RF2A to RFCA
RF2B to RFCB
RF1B to RFCB
0
0
0
0
Off
Off
Off
Off
0
0
0
1
Off
Off
Off
On
0
0
1
0
Off
Off
On
Off
0
0
1
1
Off
Off
On
On
0
1
0
0
Off
On
Off
Off
0
1
0
1
Off
On
Off
On
0
1
1
0
Off
On
On
Off
0
1
1
1
Off
On
On
On
1
0
0
0
On
Off
Off
Off
1
0
0
1
On
Off
Off
On
1
0
1
0
On
Off
On
Off
1
0
1
1
On
Off
On
On
1
1
0
0
On
On
Off
Off
1
1
0
1
On
On
Off
On
1
1
1
0
On
On
On
Off
1
1
1
1
On
On
On
On



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