HWS454 GaAs 0.5-6 GHz DP4T Switch May 2011 V4 Features QFN16L (4 x 4 mm) • Combination of 1 DPDT and 2 SPDT switches • Low Insertion Loss: 1.30 dB @ 2.50 GHz 1.55 dB @ 5.85 GHz • Isolation: 26 dB @ 2.50 GHz 19 dB @ 5.85 GHz • Miniature QFN16L (4x4 mm) Using Lead (Pb) free materials with RoHS compliant • PHEMT process Description The HWS454 is a GaAs PHEMT MMIC DP4T switch operating at 0.5-6 GHz in a low cost miniature QFN16L (4 x 4 mm) plastic lead (Pb) free package. The HWS454 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 or WiMAX 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 2.5 GHz band or 5.85 GHz band as transmit/receive functions. Electrical Specifications at 25°C with 0, +3V Control Voltages Parameter Insertion Loss ANT ports to RF ports Isolation (SPDT part) Ex: ANT1 to RF2 when ANT1 to RF1 is on Isolation (DPDT part) Ex: ANT2 to RF1 when ANT1 to RF1 is on Test Conditions 0.50-6.00 GHz 2.40-2.50 GHz 5.15-5.85 GHz 0.50-6.00 GHz 2.40-2.50 GHz 5.15-5.85 GHz 0.50-6.00 GHz 2.40-2.50 GHz 5.15-5.85 GHz Min. 24 16 Typ. 1.60 1.30 1.55 25 26 27 19 27 19 Max. 1.50 1.85 Unit dB dB dB dB dB dB dB dB dB Return Loss 0.50-6.00 GHz 12 dB Input Power for One dB Compression 2.00-6.00 GHz 30 dBm Switching Time 70 nsec Control Current 30 300 uA 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-Based Industrial 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. HWS454 GaAs 0.5-6 GHz DP4T Switch May 2011 V4 Typical Performance Data with 8pF Capacitors @ +25°C Typical Performance Data with 100pF Capacitors @ +25°C Insertion Loss vs Frequency -0.8 -0.8 -1.0 -1 Insertion Loss(dB) Insertion Loss(dB) Insertion Loss vs Frequency -1.2 -1.4 -1.6 -1.8 2.0 2.5 3.0 3.5 4.0 4.5 5.0 Frequency(GHz) 5.5 6.0 0.5 0.75 1 1.25 1.5 Frequency(GHz) Isolation vs Frequency SPDT part DPDT part Isolation vs Frequency -10 -10 -15 -15 Isolation(dB) Isolation(dB) -1.4 -1.6 -1.8 -20 -25 -30 -35 1.75 2 SPDT part DPDT part -20 -25 -30 -35 -40 -40 2.0 2.5 3.0 3.5 4.0 4.5 5.0 Frequency(GHz) 5.5 6.0 0.5 0.75 1 1.25 1.5 Frequency(GHz) 1.75 2 Return Loss vs Frequency Return Loss vs Frequency -5 -5 -10 -10 Return Loss(dB) Return Loss(dB) -1.2 -15 -20 -25 -15 -20 -25 -30 -30 2.0 2.5 3.0 3.5 4.0 4.5 Frequency(GHz) 5.0 5.5 6.0 0.5 0.75 1 1.25 1.5 Frequency(GHz) 1.75 2 Hexawave Inc. 2 Prosperity Road II, Science-Based Industrial 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. HWS454 GaAs 0.5-6 GHz DP4T Switch May 2011 V4 Absolute Maximum Ratings Parameter Absolute Maximum RF Input Power +32 dBm @ +3V Control Voltage +6V Operating Temperature -40°C to +85°C Storage Temperature -65°C to +150°C 15 GND VC2 16 CB VC1 RF1 Pin Out (Top View) CB 2 11 3 10 4 9 5 6 7 GND CB RF2 RF3 GND 8 RF4 CB GND ANT2 GND CB 12 VC4 ANT1 13 1 VC3 CB GND 14 Note: 1. DC blocking capacitors CB=8pF are required at 2~6GHz on all RF ports 2. DC blocking capacitors CB=100pF are required at 0.5~2GHz on all RF ports. 3. Exposed pad in the bottom must be connected to ground by via holes. Logic Table for Switch On-Path VC1 VC3 VC2 VC4 ANT1 ANT2 0 1 1 0 RF1 RF3 1 0 1 0 RF3 RF1 0 1 0 1 RF2 RF4 1 0 0 1 RF4 RF2 ‘1’ = +3V to +5V ‘0’ = 0V to +0.2V Hexawave Inc. 2 Prosperity Road II, Science-Based Industrial 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. HWS454 GaAs 0.5-6 GHz DP4T Switch May 2011 V4 Application Information Simplified Application Block Diagram Between HWS454 and WLAN 802.11 a/b/g RFIC Antenna Select ANT2 Band Select ANT1 Antenna SelectInv VC1 VC3 VC2 Band SelectInv VC4 WLAN 802.11a/b/g RFIC RF1 LB_RX RF2 HB_RX RF3 LB_TX RF4 HB _TX HWS454 DP 4T 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(2.5 GHz band) receiving port and HB_TX stands for high-band(5.85 GHz 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) RF3(LB_TX) 1 0 1 0 RF3(LB_TX) RF1(LB_RX) 0 1 0 1 RF2(HB_RX) RF4(HB_TX) 1 0 0 1 RF4(HB_TX) RF2(HB_RX) Hexawave Inc. 2 Prosperity Road II, Science-Based Industrial 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. HWS454 GaAs 0.5-6 GHz DP4T Switch May 2011 V4 Application Information (Continued) Simplified Application Block Diagram Between HWS454 and WLAN 802.11 a/b/g RFIC Antenna Select ANT2 Band Select ANT1 Antenna SelectInv VC1 VC3 VC2 Band SelectInv VC4 WLAN 802.11a/b/g RFIC RF1 HB_RX RF2 LB_RX RF3 HB _TX RF4 LB_TX HWS454DP4T 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(2.5 GHz band) receiving port and HB_TX stands for high-band(5.85 GHz 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) RF3(HB_TX) 1 0 1 0 RF3(HB_TX) RF1(HB_RX) 0 1 0 1 RF2(LB_RX) RF4(LB_TX) 1 0 0 1 RF4(LB_TX) RF2(LB_RX) Hexawave Inc. 2 Prosperity Road II, Science-Based Industrial 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.