________________________________________________________________________ http://www.union-ic.com rev.05 sep.2013 1/10 UM7222/7222a high-speed usb2.0 (480 mbps) dpdt switch UM7222 qfn10 1.81.4 UM7222a qfn10 2.11.6 general description the UM7222/UM7222a is a dual port high-speed, low-power data switch optimized for usb 2.0 signal switching. the UM7222/UM7222a switch is configured in double-pole/ double-throw dpdt. it handles bidirectional signal flow, achieving a 550 mhz -3db bandwidth, and a port to port crosstalk and isolation at -50db at 250mhz. the UM7222/UM7222a operates from a single +2.7v to +5.5v supply, with current consumption less than 1 micro amper. the UM7222/UM7222a features wide bandwidth and low bit-to-bit skew allow it to pass high-speed differential signal with good signal in tegrity, offers little or no attenuation of the high-speed signals at the outputs. its high channel-to-channel crosstalk rejection results in minimal noise interface. its bandwidth is wide enough to pass high-speed usb 2.0 differential signals (480mbps). the control logic threshold is guaranteed to be compatible with 1.8v logic. UM7222 is available in pb-free qfn10 package (1.4mm1.8mm0.55mm), while UM7222a is available in pb-free qfn10 package (2.1mm1.6 mm0.55mm), they are ideal for portable high speed mix signal switching application. applications features ? differential signal data routing ? usb2.0 signal routing ? cell phone, pda, digital camera and notebook ? lcd monitor, tv, and set-top box ? ron is typically 6.5 ? at v cc =3.0v ? low bit-to-bit skew: typically 50ps ? ovt on d+ and d- up to 5.5v ? power off protection: when v cc =0v, d+ and d- can tolerate up to 5.5v ? low crosstalk: -50db (250mhz) ? low current consumption: 1 a ? near-zero propagation delay:250ps ? channel on-capacitance: 6.5pf(typical) ? v cc operating range: +2.7v to +5.5v ? 550mhz bandwidth(or data frequency) ? lead (pb) free qfn10 package ? esd rating: 4kv i/o to gnd pin configurations top view UM7222 m: monthly code UM7222 qfn10 1 2 3 4 5 6 7 8 9 10 hsd1+ hsd2+ d+ gnd d- hsd2_ hsd1_ oe v cc s control
________________________________________________________________________ http://www.union-ic.com rev.05 sep.2013 2/10 UM7222/7222a UM7222a m: monthly code UM7222a qfn10 pin description pin UM7222 pin UM7222a name function 1 2 hsd1+ data ports 2 3 hsd2+ data ports 3 4 d+ data ports 4 5 gnd ground connection 5 6 d- data ports 6 7 hsd2- data ports 7 8 hsd1- data ports 8 9 _ _ oe output enable 9 10 v cc positive supply voltage 10 1 s select input ordering information part number packaging type marking code shipping qty UM7222 qfn10 1.8mm1.4mm ac 3000pcs/7 inch tape & reel UM7222a qfn10 2.1mm1.6mm ap 3000pcs/7 inch tape & reel
________________________________________________________________________ http://www.union-ic.com rev.05 sep.2013 3/10 UM7222/7222a function table oe s hsd1+, hsd1- hsd2+, hsd2- 1 x off off 0 0 on off 0 1 off on absolute maximum ratings symbol parameter limit unit v cc supply voltage - 0.5 to + 6.5 v v is analog switch input voltage -0.5 to +6.5 v in digital select input voltage - 0.5 to + 6.5 i d continuous dc current 50 ma p d power dissipation 0.5 w t o operating temperature range - 40 to +85 c t stg storage temperature range - 65 to +150 dc electrical characteristics symbol parameter test conditions vcc(v) temp limits (?40 to 85 c) unit min typ (note1) max i in input leakage current 0 v is v cc 3.6 full -1.0 1.0 a i off power off leakage current 0 v is v cc 0 full -1.0 1.0 a i cct increase in i cc per control voltage v in = 2.6v 3.6 full 10 a i oz off state leakage current 0 v is v cc 3.6 full -1.0 1.0 a i cc quiescent supply current v is =v cc or gnd 3.6 full 1.0 a v ih input high voltage 3.0 to3.6 full 1.3 v v il input low voltage 3.0 to 3.6 full 0.5 v v ik clamp diode voltage i is =-18ma 3.0 full -1.2 v r on on-resistance (note2) v is =0 to 0.4 v i d =8ma 3.0 full 6.5 9 ? r on on resistance match between channels (note2,3,) v is =0 to 0.4 v i d =8ma 3.0 full 0.35 ? r flat on resistance flatness (note2,3,) v is =0 to 1.0 v i d =8ma 3.0 full 4.5 ? 1: typically values are at v cc =3.3v and t a =+25 . 2: guaranteed by desi gn. resistance measurements do not include test circuit or package resistance. 3: parameter is characterized but not tested in production.
________________________________________________________________________ http://www.union-ic.com rev.05 sep.2013 4/10 UM7222/7222a ac electrical characteristics symbol parameter test conditions vcc(v) temp limits (?40 to 85 c) unit min typ (note 1) max t on turn on time v is =0.8v 3.0 to 3.6 full 13 30 ns t off turn off time v is =0.8v 3.0 to 3.6 full 12 25 ns t bbm break before make time (note 4) v is =0.8v 3.0 to 3.6 full 2 4.7 6.5 ns t pd propagation delay c l =10pf 3.0 to 3.6 full 0.25 ns t sk(o) channel to channel skew c l = 10pf 3.0 to 3.6 0.05 ns o irr off isolation r l =50 ? , f = 250mhz 3.0 to 3.6 full -25 db x talk crosstalk r l =50 ? , f = 250mhz 3.0 to 3.6 full -48 db bw -3 db bandwidth r l =50 ? 3.0 to 3.6 full 550 mhz capacitance c in control pin input capacitance (note5) v cc = 0v 2.5 pf c off hsd+ hsd- off capacitance (note5) v cc =v is = 3.3v, oe=3.3v 4.5 pf c on hsd+ hsd- on capacitance (note5) v cc =3.3v, oe=0v 7.0 pf 4: guaranteed by design. 5: t a = +25 , f = 1 mhz, capacitance is characterized but not tested in production.
________________________________________________________________________ http://www.union-ic.com rev.05 sep.2013 5/10 UM7222/7222a typical performance characteristics 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 0 5 10 15 20 25 30 35 t=25 o c i on =8ma v+=3.6v v+=3.3v r on vs v d and single supply voltage r on -on resistance (ohm) v d -analog voltage(v) v+=3.0v 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 0 5 10 15 20 25 30 v+=3.3v i on =8ma t=85 0 c r on vs analog voltage and temperature r on -on resistance(ohm) v d -analog voltage(v) t=25 0 c 3.0 3.1 3.2 3.3 3.4 3.5 3.6 0.50 0.55 0.60 0.65 0.70 0.75 0.80 0.85 0.90 0.95 1.00 1.05 1.10 1.15 1.20 v il switching threshold vs supply voltage v t -switching threshold(v) v+-supply voltage(v) v ih 10 100 1k 10k 100k 1m 10m -25 -20 -15 -10 -5 0 5 10 15 20 25 v+=3.6v v+=3.3v supply current vs input switching frequency i+-supply current(ua) input switching frequency(hz) v+=3.0v
________________________________________________________________________ http://www.union-ic.com rev.05 sep.2013 6/10 UM7222/7222a typical performance characteristics (continued) 0.3 1 10 100 1000 frequency (mhz) 0.3 1 10 100 1000 frequency (mhz) off isolation bandwidth
________________________________________________________________________ http://www.union-ic.com rev.05 sep.2013 7/10 UM7222/7222a typical performance characteristics (continued) 0.3 1 10 100 1000 frequency (mhz) applications information power-off protection for a vbus short circuit, the switch is expected to withstand such a condition for at least 24 hours. the UM7222 has specially designed circuitry which prevents unintended signal bleed through as well as guaranteed system reliability during a power-down, over-voltage condition. the protection has been added to the common pins (d+, d-). power-on protection the usb 2.0 specification also notes that the usb device should be capable of withstanding a vbus short during transmission of data. this m odification works by limiting current flow back into the v+ rail during the over-voltage event so current remains within the safe operating range. in this application, the switch passes the full 5. 25v input signal through to the selected output while maintaining specified off isolation on the un-selected pins. crosstalk
________________________________________________________________________ http://www.union-ic.com rev.05 sep.2013 8/10 UM7222/7222a package information UM7222 qfn10 1.81.4 outline drawing dimensions symbol millimeters min typ max a 0.50 0.55 0.60 a1 0.00 - 0.05 a3 0.15ref d 1.35 1.40 1.45 e 1.75 1.80 1.85 b 0.15 0.20 0.25 l 0.30 0.40 0.50 l1 0.40 0.50 0.60 e 0.40bsc land pattern notes: 1. compound dimension: 1.401.80; 2. unit: mm; 3.general tolerance 0.05mm unless otherwise specified; 4. the layout is just for reference. tape and reel orientation
________________________________________________________________________ http://www.union-ic.com rev.05 sep.2013 9/10 UM7222/7222a UM7222a qfn10 2.11.6 outline drawing e a a3 a1 l 0.8 l1 dimensions symbol millimeters min typ max a 0.50 0.55 0.60 a1 0.00 - 0.05 a3 0.15 ref d 2.05 2.10 2.15 e 1.55 1.60 1.65 l 0.35 0.40 0.45 l1 0.40 0.45 0.50 e 0.50bsc land pattern notes: 1. compound dimension: 2.101.60; 2. unit: mm; 3.general tolerance 0.05mm unless otherwise specified; 4. the layout is just for reference. tape and reel orientation
________________________________________________________________________ http://www.union-ic.com rev.05 sep.2013 10/10 UM7222/7222a important notice the information in this document has been ca refully reviewed and is believed to be accurate. nonetheless, this document is subjec t to change without notice. union assumes no responsibility for any inaccuracies that may be contained in this document, and makes no commitment to update or to keep current the contained information, or to notify a person or organization of any update. union rese rves the right to make changes, at any time, in order to improve reliability, function or design and to attempt to supply the best product possible. union semiconductor, inc add: 2f, no. 3, lane647 songtao road, shanghai 201203 tel: 021-51093966 fax: 021-51026018 website: www.union-ic.com
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