SP42450 Datasheet, PDF (3/10 Pages) SIPAT Co,Ltd – SP5T Absorptive Silicon-on-Sapphire

SP42450
High-Isolation RF Switch
Figure 3. Pin Configuration (Top View)
GND 1
RF5 2
GND ³
GND ⁴
RF4 5
GND 6
Exposed
Ground
Paddle
18 V2
17 V1
16 Vdd
15 GND
14 RF1
13 GND
Electrostatic Discharge (ESD) Precautions
When handling this Silicon-on-Sapphire device, observe the
same precautions that you would use with other ESD-
sensitive devices. Although this device contains circuitry to
protect it from damage due to ESD, precautions should be
taken to avoid exceeding the specified rating.
Latch-Up Avoidance
Unlike conventional CMOS devices, Silicon-on-Sapphire
devices are immune to latch-up.
Table 3. Pin Descriptions
Pin #
1, 3, 4, 6, 7, 9, 10,
12, 13, 15, 21, 23, 24
2
5
8
11
14
Name
GND
RF5⁴
RF4⁴
RF3⁴
RF2⁴
RF1⁴
Ground
RF I/O
RF I/O
RF I/O
RF I/O
RF I/O
Description
16
V_DD Supply
17
V1 Switch control input, CMOS logic level
18
V2 Switch control input, CMOS logic level
19
V3 Switch control input, CMOS logic level
20
Vss_EXT /
GND⁵
External Vss Control / Ground
22
RFC⁴ RF Common
Paddle
GND Ground for proper device operation
Note: 4. Blocking capacitors needed only when non-zero DC voltage
present.
5. Pin 20 must be grounded when using internal Vss supply
Moisture Sensitivity Level
The Moisture Sensitivity Level rating for the SP42450 in the
24-lead 4x4 QFN package is MSL1.
Optional External Vss Control (VssEXT)
For proper operation, the VssEXT control must be
grounded or at the Vss voltage specified in the
Operating Ranges table (Table 2). When the VssEXT control
pin on the package is grounded the switch FET’s are biased
with an internal low spur negative voltage generator. For
applications that require the lowest possible spur
performance, VssEXT can be applied to bypass the internal
negative voltage generator to eliminate the spurs.
Switching Frequency
The SP42450 has a maximum 25 kHz switching rate when
the internal negative voltage generator is used (pin
20=GND). The rate at which the SP42450 can be switched
is only limited to the switching time if an external -3 V
supply is provided (pin 20=Vss_EXT ).
Table 4. Absolute Maximum Ratings
Symbol Parameter/Conditions
T_ST
P_MAX
Storage temperature range
Maximum Operating Power (RFX
-RFC, All Bands (50Ω), 100%
duty cycle)
P_MAX
Maximum power into termination
(RFX, All Bands (50Ω),100%
duty cycle)
V_ESD
V_ESD
ESD Voltage HBM⁶, All Pins
ESD Voltage MM⁷, All Pins
Min
-60
Max
+150
33
24
3500
150
Units
°C
dBm
dBm
V
V
Notes: 6. Human Body Model ESD Voltage (HBM, MIL_STD 883
Method 3015.7)
7. Machine Model ESD Voltage (JESD22-A115-A)
Exceeding absolute maximum ratings may cause permanent
damage. Operation should be restricted to the limits in the
Operating Ranges table.
Tel: [phone] Fax: [phone]
Table 5. Truth Table
Mode
V3
V2
V1
All off
0
0
0
RF1 on
0
0
1
RF2 on
0
1
0
RF3 on
0
1
1
RF4 on
1
0
0
RF5 on
1
0
1
All off
1
1
0
Unsupported
1
1
1
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