MXD8651
SP5T Switch for Receive Diversity
VED
APPRO
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(Maxscend) and may not be reproduced in any form without express written consent of Maxscend. No
transfer or licensing of technology is implied by this document.
Page 1 of 7
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MXD8651 – SP5T Switch for Receive Diversity
General Description
The MXD8651 is a low loss, high isolation SP5T
switch with performance optimized for receive
diversity routing applications.
The MXD8651 is compatible with +1.0V control
logic, which is a key requirement for most cellular
transceivers. This part is packaged in a compact
2mm x 2mm x 0.55 mm, 14-pin, QFN package
which allows for a small solution size with no need
for external DC blocking capacitors (when no
external DC is applied to the device ports).
Features
Excellent insertion loss and isolation
performance
- 0.5 dB Typical Insertion Loss, Band 7
- 25 dB typical Isolation, Band 7
Multi-Band operation 700MHz to 2700MHz
GPIO compatible to 1.8V Typ (1.0V min)
Power handling +30dBm
Compact 2mm x 2mm x 0.55 mm, in QFN
package，MSL1
No DC blocking capacitors required (unless
external DC is applied to the RF ports)
Applications
Cellular Handset Applications
Cellular modems and USB Devices
Multi-mode GSM/Edge/WCDMA applications
LTE applications
Functional Block Diagram and Pin Function
GND
RF3
RF2
12
RF1
11
14
13
RF1
RF2
RF3
RF4
RF5
ANT
V3
V2
V1
1
2
3
Ground
Paddle
10
9
8
GND
ANT
GND
4
5
6
RF5
V
DD
V1
V2
V3
GND
VDD
Figure 1. Functional Block Diagram and Pinout (Top View)
RF4
7
Page 2 of 7
Maxscend Technologies Inc. All rights reserved.
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MXD8651 – SP5T Switch for Receive Diversity
Application Circuit
RF2
RF3
RF1
GND
RF3
RF2
V3
V2
V1
C1
100pF
C3
C2
100pF 100pF
V3
V2
V1
VDD
RF1
GND
ANT
GND
ANT
GND
VDD
RF5
C4
100pF
RF4
RF4
Description
Ground
Antenna
Ground
RF port1
RF port2
RF port3
Ground
RF4
Isolation
Isolation
Isolation
Insertion Loss
Isolation
RF5
Figure 2. MXD8651 Evaluation Board Schematic
Table 1. Pin Description
Pin No. Nam
Description
e
1
V3
Control Logic #3
2
V2
Control Logic #2
3
V1
Control Logic #1
4
V
DD
Power supply
5
GND Ground
6
RF5
RF port5
7
RF4
RF port4
Ground
GND Ground
Paddle
Note:
Bottom ground paddles must be connected to ground.
Pin No.
8
9
10
11
12
13
14
Name
GND
ANT
GND
RF1
RF2
RF3
GND
Truth Table
Table 2.
Control pins
V1
1
0
1
0
1
V2
0
1
1
0
0
V3
0
0
0
1
1
RF1
Insertion Loss
Isolation
Isolation
Isolation
Isolation
Switched RF Outputs
RF2
Isolation
Insertion Loss
Isolation
Isolation
Isolation
RF3
Isolation
Isolation
Insertion Loss
Isolation
Isolation
RF5
Isolation
Isolation
Isolation
Isolation
Insertion Loss
Note:
“1” = 1.0 V to 3.0 V. “0” = 0 V to 0.3 V. Insertion loss in the V1/2/3 = 110 state is 3dB lower than typical insertion loss with
only one arm “on”.
Page 3 of 7
Maxscend Technologies Inc. All rights reserved.
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MXD8651 – SP5T Switch for Receive Diversity
Recommended Operation Range
Table 3. Recommended Operation Condition
Parameters
Operation Frequency
Power supply
Switch Control Voltage High
Switch Control Voltage Low
Symbol
f1
V
DD
V
H
V
L
Min
0.1
2.5
1.0
0
Typ
-
2.8
1.8
0
Max
3.0
3.3
3.0
0.3
Units
GHz
V
V
V
Specifications
Table 4. Electrical Specifications
Parameter
DC Specifications
Supply voltage
Supply current
Control voltage:
High
Low
Control current
Switching Speed, on RF
to another
Turn-on time
RF Specifications
Insertion Loss
0.40
0.40
0.50
0.50
0.55
45
45
35
30
25
-110
-105
2fo
3fo
-105
-100
-100
-100
1.1
1.5
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dBc
dBc
dBc
dBc
dBc
dBc
704MHz to 787MHz
815MHz to 960MHz
1710MHz to 1980MHz
2110MHz to 2170MHz
2300MHz to 2690MHz
704MHz to 787MHz
815MHz to 960MHz
1710MHz to 1980MHz
2110MHz to 2170MHz
2300MHz to 2690MHz
Pin = +16dBm, 50ohms,
fo=824MHz
Pin = +16dBm, 50ohms,
fo=824MHz
Pin = +16dBm, 50ohms,
fo=1980MHz
Pin = +16dBm, 50ohms,
fo=1980MHz
Pin = +16dBm, 50ohms,
fo=2570MHz
Pin = +16dBm, 50ohms,
fo=2570MHz
704-2690MHz
V
DD
I
DD
V
CTL_H
V
CTL_L
I
CTL
1.0
0
2
t
on
5
2.5
2.8
50
3.3
90
3.0
0.3
5
5
10
V
μA
V
V
μA
μs
μs
Active mode
V
DD
must be > V
CTL
at all
times
Symbol
Min.
Specification
Typical
Max.
Units
Test Condition
(Note 2)
10% to 90% RF
Time from V
DD
=0V to part
ON and RF at 90%
Insertion Loss TRx -
ANT
Isolation
IL
Isolated TRx ports -
ANT
Harmonics (Pin =+16 dBm)
Low Band, 2fo
Low Band, 3fo
High Band, 2fo
High Band, 3fo
High Band, 2fo
High Band, 3fo
VSWR
ISO
Page 4 of 7
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MXD8651 – SP5T Switch for Receive Diversity
Absolute Maximum Ratings
Table 5. Maximum ratings
Parameters
Supply voltage
Control voltage (V1,
V2, and V3)
RF input power (RF1
to RF5)
Operating temperature
Storage temperature
Electrostatic
Discharge, Human
Body Model (HBM),
Class 1C
Symbol
V
DD
V
CTL
P
IN
T
OP
T
STG
ESD
Minimum
2.5
0
Maximum
+3.3
+3.0
+30
Units
V
V
dBm
℃
℃
V
–20
–40
+85
+125
1000
Note:
Exposure to maximum rating conditions for extended periods may reduce device reliability. There is no damage to device with
only one parameter set at the limit and all other parameters set at or below their nominal value. Exceeding any of the limits listed
here may result in permanent damage to the device
Package Outline Dimension
Figure 3. package outline dimension
Page 5 of 7
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