SK8401

SK8401 CMOS RF Front-end IC for 2.4GHz ZIGBEE/ISM Transmit/Receive Description Applications The SK8401 is a fully integrated, single-chip RF Front-  ZigBee Extended Range Devices  Home and Industrial Automation  ZigBee Smart Power ISM band. The SK8401 integrates the PA, LNA Transmit  RF4CE Remote Control and Receive switching circuitry in one CMOS single-chip  Mobile and Battery ZigBee Systems device.  Custom 2.4GHz Radio Systems 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 Typical high power applications include home and industrial automation, smart power, and RF4CE among others. Combining superior performance, high sensitivity Features  2.4 GHz high-power single-chip, single-die RF and efficiency, low noise, small form factor, and low cost, front-end IC SK8401 is the perfect solution for applications requiring extended range and bandwidth. SK8401 has simple and low-voltage CMOS control logic, and requires minimal  Single-ended 50 Ω input and output ports  Integrated PA with up to +22.5 dBm output external components for system implementation. CTX CRX Logic Control PA TXRX ANT 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 LNA exposed ground pad 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） 上海洺太电子科技有限公司 SUNTEK MICRO LTD Absolute Maximum Ratings Specification Parameter Unit Min Max Supply Voltage VDD 0 4 V DC control voltage DC VDD current consumption 0 3.6 350 V mA 0.5 uA 5 dBm Sleep current consumption RF input power ESD (HBM) +8000 V Junction Temperature +150 °C Condition Through 1kOhm resistor Through VDD pins when TXEN is on Recommended Operating Condition Parameter Supply voltage VDD Specification Min Typ Max 3 3.3 3.6 Unit V Condition 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 上海洺太电子科技有限公司 SUNTEK MICRO LTD Electrical Specifications (VDD=3.3V, 25°C, Frequency=2.4GHz-2.5GHz) Parameter Specification Typical Value Unit Condition TX Gain 25 dB Quiescent Current 22 mA +22.5 dBm Output Current 98 mA Input Return Loss -11 dB Output Return Loss -7 dB Input / output impedance 50 Ohm Second Harmonic -13 dBm/MHz Pout=20 dBm at ANT Third Harmonic -20 dBm/MHz Pout=20 dBm at ANT Load VSWR for stability 6:1 N/A Pout= +20 dBm No damage N/A Pout=+20 dBm Small-Signal Gain 15 dB Noise Figure 2.9 dB Input P1dB -4 dBm Input Return Loss -11 dB Output Return Loss -12 dB Quiescent Current 9 mA >8000 V Saturated Output Power Load VSWR for ruggedness Pout=20 dBm at ANT Single-ended RX ESD Package Dimensions 上海洺太电子科技有限公司 SUNTEK MICRO LTD