WAS4735Q 4:1 high speed ( - 3db bandwidth 1.2ghz ) switch descriptions the WAS4735Q is a bi - directional, low power, high - speed 4:1 switch that operates from a single +2.3 v to + 5 .5v power supply. the WAS4735Q is designed for switching of high - speed ( - 3db bandwidth 1.2ghz) signals in handset and consumer applications, such as cell phones, digital cameras, and notebooks with hubs or controllers with limited usb i/os. the WAS4735Q has low bit - to - bit skew and high channel - to - channel noise isolation, and is compatible with various standards, such as high - speed usb 2.0 (480mbp s) , mhl video 720p/60fps and 1080i/30fps . each switch is bi - directional and offers little attenuation of the high - speed signals at the outputs. its bandwidth is quite marginal to pass hig h - speed differential signals (2.4g bps) with good signal integrity. the WAS4735Q is featured with special circuitry on the d+/d - , which allows the device to withstand a vbus short to d+ or d - when the usb devices are either powered off or on. the was4735 q is available in q fn 1826 - 1 6 l package. standard product s are pb - free and halogen - free. applications ? cell phones ? mid ? router ? other electronics equipments q fn 1826 - 1 6 l pin c onfigurati on (top view) marking df = device code * = month (a~z) order i nformation features ? supply voltage : 2.3 ~ 5 .5v ? - 3db bandwidth : 1.2g hz @ c l =0 pf ? off isolati on : - 50 db @ 250mhz ? crosstalk : - 30 db @ 250mhz ? low q uiescent current : 60 ua typical device package shipping WAS4735Q - 16/tr qfn 1826 - 1 6 l 3000/reel&tape d f * 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 gnd d + vcc d - sel 1 sel 0 d 3 - d 3 + d 2 - d 2 + d 1 + d 1 - d 0 + d 0 - / oe nc 1 of 7 4008-318-123 sales@twtysemi.com http://www.twtysemi.com product specification d f * 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 gnd d + vcc d - sel 1 sel 0 d 3 - d 3 + d 2 - d 2 + d 1 + d 1 - d 0 + d 0 - / oe nc
pin d escriptions pin number symbol descriptions 1 gnd ground 2 d+ d+ common port (hs or fs usb) 3 d - d - common port (hs or fs usb) 4 vcc power s upply 5 sel 1 pat h selection control input (see table below) 6 sel 0 path selection control input (see table below) 7 d3 - d - from fourth source path (hs or fs usb) 8 d3+ d + from fourth source path (hs or fs usb) 9 d2 - d - from third source path (hs or fs usb) 10 d2+ d+ from third source path (hs or fs usb) 11 d1+ d+ from second source path (hs or fs usb) 12 d1 - d - from second source path (hs or fs usb) 13 d0+ d+ from first source path (hs or fs usb) 14 d0 - d - from first source path (hs or fs usb) 15 /oe enable contr ol input (see table below) 1 6 nc no connect function d escription s /oe sel 1 sel 0 function 1 x x d+,d - switch paths open 0 0 0 d+ = d0+, d - = d0 - 0 0 1 d+ = d1+, d - = d1 - 0 1 0 d+ = d2+, d - = d2 - 0 1 1 d+ = d3+, d - = d3 - logic symbol and typical a pplications logic symbol typical applications (mobile phone example) d 0 + d 2 + d 0 - d 1 + d 3 + d 1 - d 2 - d 3 - sel 1 sel 0 / oe d - d + control 4 g processor d + 2 g modem application processor usb # 3 usb # 2 usb # 1 usb # 0 4 : 1 mux d - vbus gnd usb port was 4735 q 3 g processor WAS4735Q 2 of 7 4008-318-123 sales@twtysemi.com http://www.twtysemi.com product specification d 0 + d 2 + d 0 - d 1 + d 3 + d 1 - d 2 - d 3 - sel 1 sel 0 / oe d - d + control 4 g processor d + 2 g modem application processor usb # 3 usb # 2 usb # 1 usb # 0 4 : 1 mux d - vbus gnd usb port was 4735 q 3 g processor
absolute maximum ratings parameter symbol value unit s upply voltage range vcc - 0 .5 ~ 6. 5 v data input/output voltage range v d ata - 0.5 ~ 6.5 v select input voltage range v s el - 0.5 ~ 6.5 v con tinues output current i out 50 ma junction temperature range t j 150 o c lead temperature range t l 260 o c storage temperature range t stg - 65 ~ 150 o c thermal resistance r ja 250 o c/w esd protection (hbm) i/o to vcc, i/o to gnd 6 000 v i/o to i/o 4 000 v recommend operating ratings parameter symbol value unit supply voltage range vcc 2.3 ~ 5 .5 v data input/output voltage range v data 0.0 ~ vcc v select input voltage range v sel 0.0 ~ vcc v enable control input voltage range v oe 0.0 ~ vcc v operating temperature range t a - 40 ~ 85 o c WAS4735Q 3 of 7 4008-318-123 sales@twtysemi.com http://www.twtysemi.com product specification
electronics characteristics (ta=2 5 o c , vcc= 4 .5v, unless otherwise noted) parameter symbol conditions min. typ. max. unit select and oe logic high level v ih vcc=3.0 4.5 1.7 v vcc=2.3 3.0 1.4 v select and oe logic low level v il vcc=3.0 4.5 0.6 v vcc=2.3 3.0 0.4 v supply q uiescent current i cc i out =0, v sel >1.5v or v sel <0.7v 60 8 0 ua select input leakage current i sel v sel =vcc 1.0 ua off sta te switch leakage current i off 1.0 ua on state switch leakage current i on 1.0 ua on - resistance r on vcc=3.0v, v data =0~0.4v,i out =8ma, 5.0 7.5 ? on - resistance match ? r on vcc=3.0v, v data =0~0.4v,i out =8ma, 0.15 0.20 ? on - resistance flatness r flat (on) vcc=3.0v, v data =0~1.0v,i out =8ma, 1.8 2.2 ? propagation delay time t plh / t phl c l =10pf, r l =50 ? 0.25 u s select input to switch on time t on c l =10pf, r l =50 ? 200 us select input to switch off time t off c l =10pf, r l =50 ? 10 0 ns break - before - make ti me t bbm generated by design 100 ns - 3db bandwidth bw r l =50 ? , c l =2pf 1.2 ghz off isolation oirr r l =50 ? , f=250mhz - 5 0 db crosstalk xtalk r l =50 ? , f=250mhz - 3 0 db charge injection (select input to common i/o) qg c l =0.1nf, vcc=3.3v r g =0 ? , v g =gnd 5 pc select pin input capacitance c in vcc=0v 5 pf d1n, d2n,dn off capacitance c off vcc=3.3v, oe=3.3v 5 pf d1n, d2n,dn on capacitance c on vcc=3.3v, oe=0v 6.5 pf WAS4735Q 4 of 7 4008-318-123 sales@twtysemi.com http://www.twtysemi.com product specification
typical characteristics (ta=25 o c, vcc=4.5v , unless otherwise noted) bandwidth off isolation crosstalk WAS4735Q 5 of 7 4008-318-123 sales@twtysemi.com http://www.twtysemi.com product specification
test circuit r t n e t w o r k a n a l y z e r v i n v o u t r s a n d r t a r e f u n c t i o n o f a p p l i c a t i o n e n v i r o n m e n t ( s e e t a b l e s f o r v a l u e s ) r s g n d v c n t r l g n d g n d v s g n d g n d v c n t r l = f n ( v c c ) figure 1 . usb bandwidth r t n e t w o r k a n a l y z e r v i n r s a n d r t a r e f u n c t i o n o f a p p l i c a t i o n e n v i r o n m e n t ( s e e t a b l e s f o r v a l u e s ) r s g n d v c n t r l g n d g n d v s g n d g n d v c n t r l = f n ( v c c ) r t g n d o f f i s o l a t i o n = 2 0 l o g ( v o u t / v i n ) figure 2 . c hannel off isolation r t n e t w o r k a n a l y z e r v i n v o u t r s a n d r t a r e f u n c t i o n o f a p p l i c a t i o n e n v i r o n m e n t ( s e e a c t a b l e s f o r v a l u e s ) r s g n d v c n t r l g n d g n d v s r t g n d c r o s s t a l k = 2 0 l o g ( v o u t / v i n ) g n d n c g n d v c n t r l = f n ( v c c ) figure 3 . non - adjacent channel - to - channel crosstalk WAS4735Q 6 of 7 4008-318-123 sales@twtysemi.com http://www.twtysemi.com product specification r t n e t w o r k a n a l y z e r v i n v o u t r s a n d r t a r e f u n c t i o n o f a p p l i c a t i o n e n v i r o n m e n t ( s e e t a b l e s f o r v a l u e s ) r s g n d v c n t r l g n d g n d v s g n d g n d v c n t r l = f n ( v c c ) r t n e t w o r k a n a l y z e r v i n r s a n d r t a r e f u n c t i o n o f a p p l i c a t i o n e n v i r o n m e n t ( s e e t a b l e s f o r v a l u e s ) r s g n d v c n t r l g n d g n d v s g n d g n d v c n t r l = f n ( v c c ) r t g n d o f f i s o l a t i o n = 2 0 l o g ( v o u t / v i n ) r t n e t w o r k a n a l y z e r v i n v o u t r s a n d r t a r e f u n c t i o n o f a p p l i c a t i o n e n v i r o n m e n t ( s e e a c t a b l e s f o r v a l u e s ) r s g n d v c n t r l g n d g n d v s r t g n d c r o s s t a l k = 2 0 l o g ( v o u t / v i n ) g n d n c g n d v c n t r l = f n ( v c c )
package outline dimensions qfn 1826 - 1 6 l symbol dimension in millimeters min. typ. max. a 0. 5 0 0.55 0. 6 0 a1 0.00 - 0.05 a3 0.15 typ . d 1. 7 5 1.80 1. 85 e 2.55 2.60 2.65 l 0.30 0.40 0.50 b 0.15 0.20 0.25 e 0.40 typ. WAS4735Q 7 of 7 4008-318-123 sales@twtysemi.com http://www.twtysemi.com product specification
|
