PRELIMINARY DATA SHEET
SKY5
®
-3728-21: 5G NR UHB Diversity Receive Module
Applications
5G NR sub-6GHz smartphones and tablets
5G NR sub-6GHz data cards
Description
The SKY53728-21 is a highly integrated LNA filter module that
enables users to support new 5G New Radio (NR) bands in the
3.3 to 4.2 GHz frequency range. It utilizes the latest advanced
SOI process technologies to achieve leading high-bandwidth, low
noise figure (NF) LNA performance in a small package footprint. It
also integrates all the required filtering to attenuate unwanted
out-of-band blockers in adjacent and far-out frequency bands
while maintaining very low insertion loss (IL) performance in the
pass-band frequencies
The SKY53728-21 is packaged in a small 2.8
2.6
0.7 mm
(max), 21-lead surface-mount package. No external DC blocking
capacitors are required on the RF paths as long as no DC voltage
is applied. The part can operate over the temperature range of
-30 °C to +85 °C.
A functional block diagram is shown in Figure 1. The pin
configuration and package are shown in Figure 2. Signal pin
assignments and functional pin descriptions are provided in
Table 1.
Features
Low insertion loss
High-performance variable gain LNA
Integrated SRS support through TRX port
Integrated MIPI v2.1+ interface
Integrated package shielding
Small (2.8
2.6
0.7 mm [max]) 21-lead MCM package
(MSL3, 260 °C per JEDEC J-STD-020)
Skyworks Green
TM
products are compliant with
all applicable legislation and are halogen-free.
For additional information, refer to
Skyworks
Definition of Green
TM
, document number
SQ04-0074.
Figure 1. SKY53728-21 Block Diagram
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
205507A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • October 31, 2019
1
PRELIMINARY DATA SHEET • SKY5
®
-3728-21: 5G NR DIVERSITY RECEIVE MODULE
Figure 2. SKY53728-21 Pinout
(Top View)
Table 1. SKY53728-21 Signal Descriptions
Pin
1
2
3
4
5
6
7
8
9
10
11
N/C
GND
5G_RX_OUT
N/C
VIO
SDATA
SCLK
VDD
ID0
1
ID1
1
GND
Name
No connect
Ground
DRx output
No connect
VIO voltage
Data input/output
Clock input
Supply voltage
ID select, bit 0
ID select, bit 1
Ground
Description
Pin
12
13
14
15
16
17
18
19
20
21
Name
5G_ANT1
GND
5G_ANT2
GND
5G_TRX2
5G_TRX1
GND
SRS_BYP
GND
GND
ANT1 input
Ground
ANT2 input
Ground
TRX2 input
TRX1 input
Ground
SRS bypass
Ground
Ground
Description
1
USID decoding information:
ID1
0
0
1
1
ID0
0
1
0
1
USID
0111
1000
1001
1010
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
2
October 31, 2019 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • 205507A
PRELIMINARY DATA SHEET • SKY5
®
-3728-21: 5G NR DIVERSITY RECEIVE MODULE
Electrical and Mechanical Specifications
The absolute maximum ratings of the SKY53728-21 are provided
in Table 2. Electrical specifications are provided in Table 3.
The RFFE register map information is shown in Table 4.
Table 2. SKY53728-21 Absolute Maximum Ratings
1
(T
OP
= +25
C,
Characteristic Impedance [Z
O
] = 50
Ω,
Unless Otherwise Noted)
Parameter
Storage temperature
Operating case temperature
Supply voltage
MIPI VIO voltage
Symbol
T
STG
T
CASE
V
DD
VIO
DC voltage to GND, VDD pin
DC voltage to GND, RFFE pins
Conditions
Min
-30
-30
-0.5
-0.5
Typ
Max
150
100
2.5
2.5
Units
C
C
V
V
1 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.
ESD HANDLING:
Although this device is designed to be as robust as possible, electrostatic discharge (ESD) can damage this device.
This device must be protected at all times from ESD when handling or transporting. Static charges may easily produce
potentials of several kilovolts on the human body or equipment, which can discharge without detection.
Industry-standard ESD handling precautions should be used at all times.
Table 3. SKY53728-21 General Electrical Specifications
(V
DD
= 1.2 V, V
IO
= 1.8 V, T
OP
= +25 °C, Characteristic Impedance [Z
O
] = 50
Ω,
Unless Otherwise Noted)
Specification
Normal operating case temperature
Extreme operating case temperature
1.2 V normal supply voltage (VDD)
1.8 V normal supply voltage (VDD)
Extreme supply voltage (VDD)
Normal case temperature
Normal supply voltage (VIO)
Extreme supply voltage (VIO)
Extreme case temperature
Normal
Extreme
Normal
Normal
Extreme
Normal
Normal
Extreme
Extreme
1.7
1.7
-30
-30
1.15
1.7
1.15
1.2
1.8
1.8
25
1.8
1.8
1.95
1.95
85
Test Conditions
Min
Typ
25
85
1.25
1.9
1.9
Max
Units
C
C
V
V
V
C
V
V
C
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
205507A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • October 31, 2019
3
PRELIMINARY DATA SHEET • SKY5
®
-3728-21: 5G NR DIVERSITY RECEIVE MODULE
Table 4. SKY53728-21 5G DRx Controller Register Map
Register Address (Dec.)
Register Address (Hex.)
Broadcast Slave ID and
Group Slave ID Support
Masked Write Support
Register Name
Trigger Support
Register Class
Change Detect
No
No
Yes
Active Trigger
Bit Name
Data Bits
Default
Description
Value
State
7:2
Reserved
000000
Reserved
R/W
n77/n78 LNA Enable
n77/n78 Band Select
1
0
0
0x00
No
1
1 n78
0 LNA Disable
No
NA
Yes
n77/n78 LNA Enable
0
0
n77/n78 LNA
Enable
1
0
R/W
1 LNA Enable
UDR
Reserved
Reserved
1
0x01
7:0
00000000
Reserved
No
No
NA
Yes
R/W
Reserved
7:3
00000
Reserved
R/W
000
RX_OUT
Selects Output of RX
2
0x02
001
000
Selects output of
RX
010
011
100 -
111
000 Isolation
Trigger 1
Standard
001 n77/n78 LNA
010 Reserved
011 SRSBYP to
RX_OUT
100 - 111
Reserved
No
Yes
R/W
Static
2:0
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
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October 31, 2019 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • 205507A
Static
Static
n77/n78 Band
Select
0
0 n77
R/W
R/W
Register Type
PRELIMINARY DATA SHEET • SKY5
®
-3728-21: 5G NR DIVERSITY RECEIVE MODULE
Table 4. SKY53728-21 5G DRx Controller Register Map
Register Address (Dec.)
Register Address (Hex.)
Broadcast Slave ID and
Group Slave ID Support
Masked Write Support
Register Name
Trigger Support
Register Class
Active Trigger
Change Detect
Yes
Yes
Yes
Bit Name
Data Bits
Default
Description
Value
State
Reserved
Reserved
Trigger 1
Standard
R/W
3
0x03
7:0
00000000
Reserved
No
Yes
R/W
Reserved
7:3
00000
Reserved
R/W
ANT_1_CONTROL
000
001
ANT1 SELECT
010
000
ANT1 SELECT
011
100
101 -
111
Reserved
000:TERM
No
010:Reserved
011:TRX1
100:TRX2
101 - 111 High Iso
Yes
R/W
Static
Static
5
001:n77/n78 LNA
4
0x04
2:0
UDR
Trigger 2
Standard
7:3
00000
Reserved
R/W
ANT_2_CONTROL
000
001
ANT2 SELECT
010
000
ANT2 SELECT
011
100
101 -
111
000:TERM
001:n77/n78 LNA
No
010:Reserved
011:TRX1
100:TRX2
101 - 111 High Iso
Trigger 2
Standard
Yes
R/W
5
0x05
2:0
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
205507A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • October 31, 2019
Static
Register Type
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