上海洺太电子科技有限公司 SUNTEK MICRO LTD
SK8401 CMOS RF Front-end IC for 2.4GHz ZIGBEE/ISM Transmit/Receive
Pin Description
Name
Pin
Description
TXRX
4
RF signal to/from the transceiver
TXEN
5
CMOS input to control TX enable
RXEN
6
CMOS input to control RX enable
ANT
10
Connect to 50 Ω antenna
VDD
14,16
Voltage supply connection
GND
2,3,8,9,11
Ground
DNC
13
Do not connect
NC
1,7,12,15
Not connected
SK8401 Pinout（Top view）
Description
The SK8401 is a fully integrated, single-chip RF Front-
end IC which incorporates all the RF functionality
needed for IEEE 802.15.4/ZigBee, wireless sensor
network, and any other wireless systems in the 2.4GHz
ISM band. The SK8401 integrates the PA, LNA Transmit
and Receive switching circuitry in one CMOS single-chip
device.
Typical high power applications include home and
industrial automation, smart power, and RF4CE among
others. Combining superior performance, high sensitivity
and efficiency, low noise, small form factor, and low cost,
SK8401 is the perfect solution for applications requiring
extended range and bandwidth. SK8401 has simple and
low-voltage CMOS control logic, and requires minimal
external components for system implementation.
Applications
ZigBee Extended Range Devices
Home and Industrial Automation
ZigBee Smart Power
RF4CE Remote Control
Mobile and Battery ZigBee Systems
Custom 2.4GHz Radio Systems
Features
2.4 GHz high-power single-chip, single-die RF
front-end IC
Single-ended 50 Ω input and output ports
Integrated PA with up to +22.5 dBm output
power
Integrated LNA with 3 dB noise figure
Transmit/receive switch circuitry
ESD protection circuitry on all ports
DC decoupled RF ports
Full on-chip matching and decoupling circuitry
Market proven CMOS technology
QFN 16 (3 x 3 x 0.75 mm) package with
exposed ground pad
Logic
Control
PA
LNA
TXRX
ANT
CTX CRX
上海洺太电子科技有限公司 SUNTEK MICRO LTD
Absolute Maximum Ratings
Parameter
Unit
Condition
Min
Max
Supply Voltage VDD
0
4
V
DC control voltage
0
3.6
V
Through 1kOhm resistor
DC VDD current consumption
350
mA
Through VDD pins when TXEN is on
Sleep current consumption
0.5
uA
RF input power
5
dBm
ESD (HBM)
+8000
V
Junction Temperature
+150
°C
Recommended Operating Condition
Parameter
Specification
Unit
Condition
Min
Typ
Max
Supply voltage VDD
3
3.3
3.6
V
All VDD pins
Control voltage “high”
1.2
VDD
Through 1kOhm resistor
Control voltage “low”
0
0.3
Through 1kOhm resistor
Ambient Temperature
-40
25
+125
°C
SK8401 Control Logic
Mode
TXEN
RXEN
TX active
1
X
RX active
0
1
Shutdown
0
0
“1” denotes high voltage state (> 1.2 V)
“0” denotes low voltage stage (< 0.3 V) at control pins
“X” denotes do not care: either “1” or “0” can be applied