MXD8661
SP6T for LTE diversity and RX
VED
APPRO
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Page 1 of 7
Maxscend Technologies Inc. All rights reserved.
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MXD8661 – SP6T for LTE Diversity and RX
General Description
The MXD8661 is a low loss, high isolation SP6T
switch for LTE diversity and RX applications.
The MXD8661 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, 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
- 0.6 dB Insertion Loss at 2.7GHz
- 28 dB Isolation at 2.7GHz
Multi-Band operation 100MHz to 3000MHz
Compact 2mm x 2mm in QFN-14 package
No DC blocking capacitors required (unless
external DC is applied to the RF ports)
Applications
2G/3G/4G
antenna
diversity
or
LTE
(FDD/TDD) receiving
Cellular modems and USB Devices
Functional Block Diagram and Pin Function
RF1
RF2
RF3
RF4
RF5
RF6
ANT
RF5
RF3
RF1
VDD
1
2
3
4
11
Ground
Paddle
10
9
8
RF6
RF4
RF2
NC
V
DD
V1
V2
V3
Figure 1 Functional Block Diagram and Pinout (Top View)
Page 2 of 7
Maxscend Technologies Inc. All rights reserved.
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MXD8661 – SP6T for LTE Diversity and RX
Application Circuit
Figure 2 MXD8661 Evaluation Board Schematic
Table 1. Pin Description
Pin No.
1
2
3
4
5
6
7
Ground
Paddle
Nam
e
RF5
RF3
RF1
V
DD
V3
V2
V1
GND
Description
RF port5
RF port3
RF port1
Power supply
Control logic 3#
Control logic 2#
Control logic 1#
Ground
Pin No.
8
9
10
11
12
13
14
Name
NC
RF2
RF4
RF6
NC
ANT
NC
Description
No connection
RF port2
RF port4
RF port6
No connection
Antenna port
No connection
Note:
Bottom ground paddles must be connected to ground.
Page 3 of 7
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MXD8661 – SP6T for LTE Diversity and RX
Truth Table
Table 2.
Control pins
V1
0
0
0
0
1
1
1
Note:
Switched RF Outputs
RF1
Insertion
Loss
Isolation
Isolation
Isolation
Isolation
Isolation
RF2
Isolation
Insertion
Loss
Isolation
Isolation
Isolation
Isolation
RF3
Isolation
Isolation
Insertion
Loss
Isolation
Isolation
Isolation
Isolation
RF4
Isolation
Isolation
Isolation
Insertion
Loss
Isolation
Isolation
RF5
Isolation
Isolation
Isolation
Isolation
Insertion
Loss
Isolation
RF6
Isolation
Isolation
Isolation
Isolation
Isolation
Insertion
Loss
V2
0
0
1
1
0
0
1
V3
0
1
0
1
0
1
X
“1” = 1.0 V to 3.0 V. “0” = 0 V to 0.3 V.
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
3.0
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
V
DD
I
DD
V
CTL
_
H
V
CTL
_
L
I
CTL
V
CTL
= 1.8 V
1.35
2.5
2.8
70
1.80
0.5
3.0
90
3.0
0.3
1.0
V
uA
V
V
μA
Symbol
Test Condition
(Note 2)
Min
Typical
Max
Units
Switching Speed, on RF to
another
Turn‐on time
RF Specifications
Insertion loss (ANT pin to
RF1/2/3/4/5/6 pins)
Isolation (ANT pin to RF1/2/3/4/5/6
pins)
Input return loss (ANT pin to
RF1/2/3/4/5/6 pins)
0.1 dB Compression Point (ANT
pin to RF1/2/3/4/5/6 pins)
t
on
10% to 90% RF
Time from V
DD
=0V to part
ON and RF at 90%
0.1 to 1.0 GHz
1.0 to 2.0 GHz
2.0 to 2.7 GHz
0.1 to 1.0 GHz
1.0 to 2.0 GHz
2.0 to 2.7 GHz
0.1 to 1.0 GHz
1.0 to 2.0 GHz
2.0 to 2.7 GHz
0.8 GHz to 3.0 GHz
0.5
5
0.50
0.55
0.60
40
35
28
25
22
20
+28
1
10
0.50
0.60
0.70
μs
μs
dB
dB
dB
dB
dB
dB
dB
dB
dB
dBm
IL
Iso
RL
P0.1dB
35
30
24
20
18
15
Absolute Maximum Ratings
Page 4 of 7
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MXD8661 – SP6T for LTE Diversity and RX
Table 5. Maximum ratings
Parameters
Supply voltage
Control voltage (V1,
V2, and V3)
RF input power (RF1
to RF6)
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
+3.0
+3.0
+28
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
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