0.1-3.0GHz SP8T Switch
for Diversity Applications
Description
The NZ5708S is a SP8T (single-pole eight-throw) antenna switch module, designed for
multimode broadband cellular applications, supporting UMTS, TD-SCDMA and LTE
from 100MHz to 3.0GHz. The RF performance is optimized with low insertion loss and
low harmonics to guarantee the stringent requirements of all 3G/LTE standards.
The NZ5708S integrates a SP8T switch and a GPIO controller on a single SOI chip.
Equipped with 8 symmetrical RF ports for UMTS/TD-SCDMA/LTE, the NZ5708S is pro-
viding the most versatile combinations of operation in different modes.
Low insertion loss is exhibited in every path in NZ5708S, from the antenna port to any
of the RF port, with high isolation between both opposite and adjacent paths. In addi-
tion, the NZ5708S also achieves excellent linearity performance, suitable for 3G and
LTE applications. The internal decoder allows convenient GPIO connections and sup-
ports digital control signals. The SOI architecture in NZ5708S removes the external DC
blocking capacitors to save the cost and PCB space for end customers.
The NZ5708S is encapsulated in a compact 2mm x 2mm QFN package, with low pro-
file of 0.525mm. This product is RoHS-compliant and halogen free.
The NZ5708S is rated to Moisture Sensitivity Level 1(MSL1) at 260
°
C per JEDEC J-
STD-020.
NZ5708S
NZ5708S
Features
•
Broadband support 0.1-3.0GHz
•
Compatible with UMTS, TD-
SCDMA, and LTE
•
Advanced SOI process
•
Low insertion loss
•
Excellent linearity
•
8 symmetrical ports
•
GPIO control interface
•
No external DC blocking capacitor
required
•
Ultra small QFN footprint, 2mm x
2mm x 0.525mm, 14-pin
•
ESD Class 1C
•
Green product
Block Diagram
Application
RF1
RF2
RF3
RF4
RF5
RF6
RF7
RF8
Controller
ANT
•
UMTS/TD-SCDMA/LTE Cellular
handsets and data cards
•
Diversity for UMTS/LTE
Lansus Technologies Inc., Phone: +86(21)50100818, Fax: +86(21)50100696, Email: info@lansus.com.cn, Web: www.lansus.com.cn
VC1
VC2
VC3
VDD
1
NZ5708S
Absolute Maximum Ratings
Parameter
Supply Voltage(V
DD
)
Control Voltage(VC1,VC2, VC3)
RF Input Power
Operating Temperature
Storage Temperature
ESD-Human Body Mode(HBM)
Rating
4.5
3
+30
-30 to 90
-55 to 150
-1 to 1
Unit
V
V
dBm
Appropriate precautions in handling, packag-
ing and testing devices must be observed.
ESD Caution
°
C
°
C
kV
Recommended Operating Conditions
Parameter
Supply Voltage
Supply Current
Control Voltage(VC1,VC2,
VC3)
Control Current
RF Input Power
Symbol
V
DD
I
DD
VC
I
CTRL
P
IN
High
Low
1.3
Condition
Minimum
2.5
Typical
3.0
0.11
1.8
0
0.003
Maximum
3.5
0.15
2.8
0.5
0.02
30
Unit
V
mA
V
mA
dBm
Logic Truth Table for Operation Modes
MODE
RF1
RF2
RF3
RF4
RF5
RF6
RF7
RF8
VC1
0
0
0
0
1
1
1
1
VC2
0
0
1
1
0
0
1
1
VC3
0
1
0
1
0
1
0
1
2
Lansus Technologies Inc., Phone: +86(21)50100818, Fax: +86(21)50100696, Email: info@lansus.com.cn, Web: www.lansus.com.cn
NZ5708S
UMTS/TD-SCDMA/LTE RF Electrical Specifications
(Test Condition V
DD
= 2.8V, VC1/VC2/VC3 = 1.8V/0V, P
IN
= 0dBm, Tc = 25
°
C, 50Ω, unless otherwise specified)
Parameter
Frequency
Condition
UMTS/LTE Band 5/8/12/13/14/17/20
UMTS/TD-SCDMA/LTE Band 1/2/3/4/34/39
LTE Band 7/38/40/41
698MHz to 960MHz
1710MHz to 2170MHz
2300MHz to 2690MHz
698MHz to 960MHz
1710MHz to 1980MHz
2300MHz to 2690MHz
10% to 90% RF
28
21
18
Minimum
698
1710
2300
0.4
0.5
0.6
30
23
20
2
5
Typical
Maximum
960
2170
2690
0.6
0.7
0.8
Unit
MHz
Insertion Loss
dB
Isolation
dB
Switching Time
μs
4
Lansus Technologies Inc., Phone: +86(21)50100818, Fax: +86(21)50100696, Email: info@lansus.com.cn, Web: www.lansus.com.cn
NZ5708S
Application Schematic
RF7
RF8
RF5
RF3
RF1
VDD
1nF
1 14
2
3
4
5
47pF
13
12 11
10
9
7
8
47pF
RF6
RF4
RF2
NC
GND
6
47pF
1. RF input and output are 50-Ohm microstrip.
2. Decoupling capacitors may be added for VDD & VC1/VC2/VC3 according to different applications.
Lansus Technologies Inc., Phone: +86(21)50100818, Fax: +86(21)50100696, Email: info@lansus.com.cn, Web: www.lansus.com.cn
VC3
VC2
VC1
5
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