________________________________________________________________________ http://www.union-ic.com rev.01 aug.2009 1/10 UM4157 0.8 ? low-voltage spdt analog switch UM4157 sot363 general description the UM4157 is a low on resistance, low-power, si ngle pole double throw (spdt) analog switch. this product has been designed for switching audi o signals in applications such as cell phones and portable media players. the ultra-low 0.8 ? impedance, sub a current consumption, and 1.65v to 4.3v operating voltage range make this product ideal fo r battery-powered applications. the UM4157 also features bidirectional operation a nd break-before-make functionality. this device is fully specified for operation at 1.8v, 2.5v, and 3.3v. applications features z cellular phone z pda z portable media player z typical 0.8 ? on resistance (r on ) for ? 2.7v supply z 0.23 ? typical r on flatness for ? 2.7v supply z broad v cc operating range: 1.65v to 4.3v z low thd (0.02% typical for 32 ? load) z control logic is 1.8v cmos logic compatible pin configurations top view ordering information part number packaging type marking code shipping qty UM4157 sot363 u7h 3000pcs/7 inch tape & reel function table select input function l b0 connected to a h b1 connected to a UM4157 sot363
________________________________________________________________________ http://www.union-ic.com rev.01 aug.2009 2/10 UM4157 absolute maximum ratings symbol parameter limit unit v cc supply voltage - 0.5 to + 5.5 v s dc switch voltage (note 1) - 0.5 to (v cc + 0.3) v in dc in voltage (note 1) - 0.5 to + v cc v i ik dc input diode current -50 i sw dc switch current 100 i swpeak peak switch current (pulsed at 1ms duration, 10% duty cycle) 150 ma t j junction temperature under bias +150 t stg storage temperature range - 65 to +150 t l junction lead temperature (soldering, 10seconds) +260 c esd human body model 2000 v p d sot363 package 180 mw note 1: the input and output negative voltage ra tings may be exceeded if the input and output diode current ratings are observed. recommended ratings symbol parameter limit unit v cc supply voltage operating 1.65 to 4.3 v in control input voltage (note 2) 0 to v cc v in switch input voltage 0 to v cc v t a operating temperature -45 to +85 c note 2: unused inputs must be he ld high or low, it must not float.
________________________________________________________________________ http://www.union-ic.com rev.01 aug.2009 3/10 UM4157 electrical characteristics limits (?40 to 85 c) symbol parameter test conditions vcc(v) temp min typ max unit dc electrical characteristics i in control leakage current 0 v i n vcc 1.65 to 4.3 full -0.5 +0.5 a i off(no/n c) off state leakage current a=0.3v, v cc -0.3v, b 0 or b 1 =0.3v, v cc -0.3v or floating 1.95 to 4.3 room full -10 -50 +10 +50 n a i on(a) on state leakage current a=0.3v, v cc -0.3v, b 0 or b 1 =0.3v, v cc -0.3v or floating 1.95 to 4.3 room full -20 -100 +20 +100 n a 3.6 to 4.3 1.4 2.7 to 3.6 1.3 2.3 to 2.7 1.1 v ih input high voltage 1.65 to 1.95 full 0.9 v 3.6 to 4.3 0.7 2.7 to 3.6 0.5 2.3 to 2.7 0.4 v il input low voltage 1.65 to 1.95 full 0.4 v i cc quiescent supply current v in =vcc or gnd i o =0 4.3 full -3 3 a i out =100ma, b 0 or b 1 =0v,0.7v,3.6v,4.3v 4.3 full 0.6 1.0 i out =100ma, b 0 or b 1 =0v,0.7v,2.0v,2.7v 2.7 full 0.8 1.2 i out =100ma, b 0 or b 1 =0v, 0.7v, 2.0v,2.3v 2.3 full 0.9 1.3 r on on-resistance (note3) i out =100ma, b 0 or b 1 = 0.7v 1.65 room full 1.5 2.5 3.0 ? 4.3 full 0.04 0.75 2.7 full 0.06 0.13 2.3 full 0.12 0.20 r on on resistance match between channels (note4) i out =100ma, b 0 or b 1 = 0.7v 1.65 full 1.0 ? 4.3 full 0.18 0.5 2.7 full 0.23 0.5 2.3 full 0.28 0.6 r flat on resistance flatness (note5) i out =100ma, b 0 or b 1 = 0v to v cc 1.65 room 0.3 ? note 3: measured by the voltage drop between a and b pins at the indicated current through the sw itch. on resistance is determi ned by the lower of the voltages on the two (a or b ports). note 4: r on = r on (b0) ? r on(b1) measured at identical v cc , temperature and voltage levels. note 5: flatness is defined as the difference between the maximum and minimum valu e of on resistance over the specified range o f input voltage.
________________________________________________________________________ http://www.union-ic.com rev.01 aug.2009 4/10 UM4157 electrical characteristics (continued) limits (?40 to 85 c) symbol parameter test conditions vcc(v) temp min typ max unit ac electrical characteristics 3.6 to 4.3 room full 55 60 2.7 to 3.6 room full 60 65 2.3 to 2.7 room full 65 70 t on turn-on time b 0 or b 1 =1.5v, r l =50 ? , c l =35pf 1.65 to 1.95 full 70 90 ns 3.6 to 4.3 room full 30 35 2.7 to 3.6 room full 35 40 2.3 to 2.7 room full 40 45 t off turn-off time b 0 or b 1 =1.5v, r l =50 ? , c l =35pf 1.65 to 1.95 full 40 55 ns t bbm break before make time b 0 or b 1 =1.5v, r l =50 ? , c l =35pf 1.65 to 4.3 full 5 ns 3.6 to 4.3 room 6 2.7 to 3.6 room 6 2.3 to 2.7 room 6 q inj charge injection c l = 1.0 nf, v gen = 0 v r gen = 0 ? 1.65 to 1.95 room pc o irr off isolation f = 100 khz, r l =50 ? , c l = 5pf(stray), 1.65 to 4.3 room -75 db 3.6 to 4.3 room -75 2.7 to 3.6 room -75 2.3 to 2.7 room -75 xtalk crosstalk f = 100 khz, r l =50 ? , c l = 5pf(stray), 1.65 to 1.95 room -70 db bw -3 db bandwidth r l =50 ? 1.65 to 4.3 room 70 mhz 3.6 to 4.3 r l =32 ? , v in =2v p-p f=20hz to 20khz 2.7 to 3.6 room 0.02 r l =32 ? , v in =1.5v p-p f=20hz to 20khz 2.3 to 2.7 room 0.036 thd total harmonic distortion r l =32 ? , v in =1.2v p-p f=20hz to 20khz 1.65 to 1.95 room 0.01 % capacitance c in control pin input capacitance f=1mhz 0.0 room 1.5 pf c io-b b port off capacitance f=1mhz 4.5 room 21.0 pf c ioa-on a port capacitance when switch is enabled f=1mhz 4.5 room 90.0 pf
________________________________________________________________________ http://www.union-ic.com rev.01 aug.2009 5/10 UM4157 typical characteristics figure1. off-isolation at vcc=3.3v figure2. bandwidth at vcc=-3.3v figure3. switch on resistance, ion=100ma, vcc=2.3v, b1 figure4. switch on resistance, ion=100ma,vcc=2.5v,b1 figure5. switch on resistance, ion=100ma, vcc=4.3v, b1 0.0 0.5 1.0 1.5 2.0 2.5 0.75 0.80 0.85 0.90 0.95 1.00 1.05 ron(m ohm) vb(v) 0.0 0.5 1.0 1.5 2.0 2.5 0.70 0.75 0.80 0.85 0.90 0.95 1.00 1.05 ron(m ohm) vb(v) 0.51.01.52.02.53.03.54.04.5 0.50 0.55 0.60 0.65 0.70 0.75 ron(m ohm) vb(v) 1 1: -75.204db 100khz s21 (db) 1e05 1e06 1e07 1e08 20 40 60 80 -20 -40 -60 -80 0 frequency (hz) 1 1: -3.000db 72.1325mhz 1e05 1e06 1e07 1e08 s21 (db) frequency (hz) 5 10 15 20 -5 -10 -15 -20 0
________________________________________________________________________ http://www.union-ic.com rev.01 aug.2009 6/10 UM4157 test circuits/timing diagrams notes: 6.rl,rs,and cl are functions of the application environment.(see ac electrical table for specific values) 7. cl includes test fixture and stray capacitance . figure 6. turn-off timing a cl* rl vout vcc vcc b0 b1 vb control input s gnd vcc 0v vout 50% tbbm 0.9*vout control input tr=tf=2.5ns(10-90%) cl* includes fixture and stray capacitance figure 7. break-before-make timing figure 8. off-isolation
________________________________________________________________________ http://www.union-ic.com rev.01 aug.2009 7/10 UM4157 test circuits/timing diagrams (continued) figure 9. non-adjacent channel-to-channel crosstalk figure 10. charge injection test figure 11. on/off capacitance measurement setup
________________________________________________________________________ http://www.union-ic.com rev.01 aug.2009 8/10 UM4157 test circuits/timing diagrams (continued) vsel gnd gnd gnd gnd gnd rs vs vout vin rt network analyzer figure 12. bandwidth rl vcc bn s gnd analyzer vin signal generator logic input 0v or vcc 10nf figure 13. harmonic distortion
________________________________________________________________________ http://www.union-ic.com rev.01 aug.2009 9/10 UM4157 package information UM4157 sot363 outline drawing dimensions millimeters inches symbol min max min max a 0.900 1.100 0.035 0.043 a1 0.000 0.100 0.000 0.004 a2 0.900 1.000 0.036 0.039 b 0.100 0.350 0.004 0.014 c 0.080 0.220 0.003 0.009 d 1.800 2.200 0.071 0.087 e 1.150 1.350 0.045 0.053 e1 2.000 2.450 0.079 0.096 e 0.650ref 0.026ref e1 1.200 1.400 0.047 0.055 l 0.525ref 0.021ref l1 0.260 0.460 0.010 0.018 0 8 0 8 land pattern notes: 1. compound dimension: 2.101.25; 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.01 aug.2009 10/10 UM4157 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: 7f, no. 5, bibo road, shanghai 201203 tel: 021-51097928 fax: 021-51026018 website: www.union-ic.com
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