HWS419 July 2004 Features QFN16L (4 x 4 mm) • Combination of 1 DPDT and 2 SPDT switches • Low Insertion Loss : 1.30dB @ 2.50GHz • • • • • • 1.55dB @ 5.85GHz Isolation: 26dB @ 2.50GHz 19dB @ 5.85GHz Flexible selection of 2.5/5.8GHz Tx/Rx ports Low DC Power Consumption Miniature QFN16L (4x4 mm) Plastic Package PHEMT Process Different Logic Version of HWS379 Description The HWS419 is a GaAs PHEMT MMIC DP4T switch operating at DC-6GHz in a low cost miniature QFN16L (4 x 4 mm) plastic package. The HWS419 combines one DPDT switch and two SPDT switches in a single IC and features low insertion loss and high isolation with very low DC power consumption. This switch can be used in IEEE 802.11a/b/g WLAN systems for combination of transmit/receive and antenna diversity functions. Two antenna ports can be selected for antenna diversity function and four RF ports can be arbitrary chosen for 2.5GHz band or 5.85GHz band as transmit/receive functions. Electrical Specifications at 25°C with 0, +3V Control Voltages Parameter Test Conditions Min. Typ. Max. Unit 1.50 1.85 dB dB dB Insertion Loss ANT ports to RF ports 0.01-6.00 GHz 2.40-2.50GHz 5.15-5.85GHz 1.60 1.30 1.55 Isolation (SPDT part) Ex: ANT1 to RF2 when ANT1 to RF1 on 0.01-6.00 GHz 2.40-2.50GHz 5.15-5.85GHz 24 25 26 27 dB dB dB Isolation (DPDT part) Ex: ANT2 to RF1 when ANT1 to RF1 on 0.01-6.00 GHz 2.40-2.50GHz 5.15-5.85GHz 17 19 27 19 dB dB dB Return Loss 0.01-6.00 GHz 2.40-2.50GHz 5.15-5.85GHz 12 20 15 dB dB dB 2.00-6.00GHz @0/+3.0V 30 dBm Input Power for One dB Compression Control Current 30 300 µA Note: All measurements made in a 50 ohm system with 0/+3.0V control voltages, unless otherwise specified. Hexawave Inc. 2 Prosperity Road II, Science Park, Hsinchu, Taiwan. TEL 886-3-578-5100 FAX 886-3-577-0512 http://www.hw.com.tw All specifications are subject to change without notice. V1 HWS419 July 2004 Typical Performance Data with 8pF Capacitors @ +25°C Absolute Maximum Ratings Parameter Insertion Loss vs Frequency Absolute Maximum RF Input Power +32dBm @ +3V -0.8 Control Voltage +6V -1.0 Operating Temperature -40°C to +85°C Storage Temperature -65°C to +150°C -1.2 Pin Out (Top View) -1.4 -1.6 B Insertion Loss(dB) V1 -1.8 2.0 2.5 3.0 3.5 4.0 4.5 5.0 Frequency(GHz) 5.5 6.0 16 B SPDT part DPDT part Isolation vs Frequency -10 B 13 12 2 11 3 10 4 9 5 6 7 B B 8 -20 B Isolation(dB) 14 1 -15 -25 -30 -35 -40 2.0 2.5 3.0 3.5 4.0 4.5 5.0 Frequency(GHz) 5.5 6.0 Return Loss vs Frequency Note: 1. DC blocking capacitors CB=8pF are required on all RF ports. 2. Exposed pad in the bottom must be connected to ground by via holes. Logic Table for Switch On-Path -5 VC1 VC3 VC2 VC4 0 1 1 0 RF1 RF4 -15 1 0 1 0 RF4 RF1 -20 0 1 0 1 RF2 RF3 1 0 0 1 RF3 RF2 -10 Return Loss(dB) 15 -25 -30 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 ANT1 ANT2 ‘1’ = +3V to +5V ‘0’ = 0V to +0.2V Frequency(GHz) Hexawave Inc. 2 Prosperity Road II, Science Park, Hsinchu, Taiwan. TEL 886-3-578-5100 FAX 886-3-577-0512 http://www.hw.com.tw All specifications are subject to change without notice. HWS419 July 2004 V1 Application Information Simplified Application Block Diagram Between HWS419 and WLAN 802.11 a/b/g RFIC ANT2 Band Select Antenna Select ANT1 Antenna SelectInv VC1 VC3 VC2 Band SelectInv VC4 WLAN 802.11a/b/g RFIC RF1 LB_RX RF2 HB_RX RF3 HB_TX RF4 LB_TX HWS419 DP4T Switch Note: 1. VC1 and VC3 are used for antenna selection, while VC2 and VC4 are used for band selection. 2. LB_RX stands for low-band(2.5GHz band) receiving port and HB_TX stands for high-band(5.85GHz band) transmitting port. 3. RF paths between switch and RFIC may include amplifiers, filters, and baluns. Logic Table for Switch On-Path VC1 VC3 (AntennaSelect) (AntennaSelectInv) VC2 (BandSelect) VC4 (BandSelectInv) ANT1 ANT2 0 1 1 0 RF1(LB_RX) RF4(LB_TX) 1 0 1 0 RF4(LB_TX) RF1(LB_RX) 0 1 0 1 RF2(HB_RX) RF3(HB_TX) 1 0 0 1 RF3(HB_TX) RF2(HB_RX) Hexawave Inc. 2 Prosperity Road II, Science Park, Hsinchu, Taiwan. TEL 886-3-578-5100 FAX 886-3-577-0512 http://www.hw.com.tw All specifications are subject to change without notice. HWS419 July 2004 V1 Application Information (Continued) Simplified Application Block Diagram Between HWS419 and WLAN 802.11 a/b/g RFIC ANT2 Band Select Antenna Select ANT1 Antenna SelectInv VC1 VC3 VC2 Band SelectInv VC4 WLAN 802.11a/b/g RFIC RF1 HB_RX RF2 LB_RX RF3 LB_TX RF4 HB_TX HWS419 DP4T Switch Note: 1. VC1 and VC3 are used for antenna selection, while VC2 and VC4 are used for band selection. 2. LB_RX stands for low-band(2.5GHz band) receiving port and HB_TX stands for high-band(5.85GHz band) transmitting port. 3. RF paths between switch and RFIC may include amplifiers, filters, and baluns. Logic Table for Switch On-Path VC1 VC3 (AntennaSelect) (AntennaSelectInv) VC2 (BandSelect) VC4 (BandSelectInv) ANT1 ANT2 0 1 1 0 RF1(HB_RX) RF4(HB_TX) 1 0 1 0 RF4(HB_TX) RF1(HB_RX) 0 1 0 1 RF2(LB_RX) RF3(LB_TX) 1 0 0 1 RF3(LB_TX) RF2(LB_RX) Hexawave Inc. 2 Prosperity Road II, Science Park, Hsinchu, Taiwan. TEL 886-3-578-5100 FAX 886-3-577-0512 http://www.hw.com.tw All specifications are subject to change without notice.