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december 2009 doc id 16885 rev 1 1/19 19 ST3DV520A high bandwidth switch with 20- to 10-bit mux/demux features low r on : 4.0 typical v cc operating range: 3.0 to 3.6 v enhanced esd protection: > 8 kv (contact) and 15 kv (hbm) channel on capacitance: 9.5 pf typical switching time speed: 9 ns near to zero propagation delay: 250 ps very low crosstalk: -45 db at 250 mhz bit-to-bit skew: 200 ps > 600 mhz -3 db typical bandwidth (or data frequency) package: qfn56 description the ST3DV520A is a 20- to 10-bit multiplexer/demultiplexer low r on and high bandwidth bidirectional switch suitable for analog video applications. the signal from each inpu t is multiplexed into one of two selected outputs while the unselected switch goes to hi-z status. the device is designed for very low crosstalk, low bit-to-bit skew and low i/o capacitance. the ST3DV520A supports high definition (hd) video switching standards and is also suitable for general purpose switching that requires high signal integrity. qfn56 table 1. device summary order code package packing ST3DV520Aqtr qfn56 tape and reel www.st.com
contents ST3DV520A 2/19 doc id 16885 rev 1 contents 1 pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2 maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 2.1 recommended operating conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 3 electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 4 package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 5 revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
ST3DV520A pin description doc id 16885 rev 1 3/19 1 pin description figure 1. pin connection (top through view) table 2. pin description pin symbol name and function 2, 3, 7, 8, 11, 12, 14, 15, 19, 20 a, b, c, d, e, f, g, h, i, j 10-bit bus 22, 23, 48, 47, 43, 42, 37, 36, 32, 31 a0, b0, c0, d0, e0, f0, g0, h0, i0, j0 10-bit multiplexed to bus 0 25, 26, 46, 45, 41, 40, 35, 34, 30, 29 a1, b1, c1, d1, e1, f1, g1, h1, i1, j1 10-bit multiplexed to bus 1 5, 51, 52, 54 n/c not connected 17 sel bus and led switch selection 4, 10, 18, 27, 38, 50, 56 v dd supply voltage 1, 6, 9, 13, 16, 21, 24, 28, 33, 39, 44, 49, 53, 55 gnd ground '.$ '.$ 6$$ '.$ 6$$ '.$ '.$ 6$$ '.$ 6$$ 3%, '.$ ( ' '.$ & % 6$$ '.$ $ # '.$ .# 6$$ " ! '.$ ( ' ( '.$ & % % 6$$ '.$ $ # $ # '.$ " ! " ! ' & nc nc nc j i j0 i0 i1 j1
pin description ST3DV520A 4/19 doc id 16885 rev 1 figure 2. input equivalent circuit table 3. switch function table sel function l 10-bit bus to 10-bit multiplexed bus 0 h 10-bit bus to 10-bit multiplexed bus 1 am041 3 4v1 s el i j i0 j0 i1 j1
ST3DV520A maximum ratings doc id 16885 rev 1 5/19 2 maximum ratings stressing the device above the rating listed in the ?absolute maximum ratings? table may cause permanent damage to the device. these are stress ratings only and operation of the device at these or any other conditions above those indicated in the operating sections of this specification is not imp lied. exposure to absolute ma ximum rating conditions for extended periods may affect device reliability. 2.1 recommended operating conditions table 4. absolute maximum ratings symbol parameter value unit v cc supply voltage to ground -0.5 to 4.6 v v io dc input output voltage -0.5 to 4.6 v v ic dc control input voltage -0.5 to 4.6 v i o dc output current (1) 1. if v io x i o does not exceed the maximum limit of p d . 120 ma p d power dissipation 0.5 w t stg storage temperature -65 to 150 c t l lead temperature (10 sec) 300 c table 5. recommended operating conditions symbol parameter value unit min typ max v cc supply voltage to ground 3 ? 3.6 v v ic dc control input voltage (sel) 0 ? 5 v v io dc input/output voltage 0 ? v cc v t a operating temperature -40 ? 85 c
electrical characteristics ST3DV520A 6/19 doc id 16885 rev 1 3 electrical characteristics table 6. dc electrical characteristics (v cc = 3.3 v 10%) symbol parameter test condition value unit -40 to 85 c min typ max v ih voltage input high (sel) high level guaranteed 2 ? ? v v il voltage input low (sel) low level guaranteed -0.5 ? 0.8 v v ik clamp diode voltage (sel) v cc = 3.6 v i in = -18 ma ? -0.8 -1.2 v i ih input high current (sel) v cc = 3.6 v v in = v cc ??5a i il input low current (sel) v cc = 3.6 v v in = gnd ??5a ioff (sw) (1) leakage current through the switch common terminals (a to j) v cc = 3.6 v a to j = v cc led1 to led3 = v cc a0 to j0 = 0 v a1 to j1 = floating sel = v cc ??1a ioff (sel) sel pin leakage current v cc = 0 v sel = 0 to 3.6 v ??1a r on switch on resistance (2) v cc = 3.0 v v in = 1.5 to v cc i in = -40 ma ?4.06.5 r flat on resistance flatness (2) (3) v cc = 3.0 v v in at 1.5 and vcc i in = -40 ma ?0.5? r on on resistance match between channel r on = r onmax -r onmin (2)(4) v cc = 3.0 v v in = 1.5 to v cc i in = -40 ma ?0.41 1. refer to figure 4: test circuit for leakage current (ioff) on page 9 2. measured by voltage drop between channels at indicated curr ent through the switch. on resistance is determined by the lower of the voltages. 3. flatness is defined as the difference between the r onmax and r onmin of on resistance over the specified range. 4. r on measured at same v cc , temperature and voltage level.
ST3DV520A electrical characteristics doc id 16885 rev 1 7/19 table 7. capacitance (t a = 25 c, f = 1 mhz) table 8. power supply characteristics table 9. dynamic electrical characteristics (v cc = 3.3 v 10%) symbol parameter test condition value unit min typ max c in sel pin input capacitance (1) 1. refer to figure 5 on page 10 dc = 0.25 v ac = 0.5 v pp f=1mhz ?23pf c off switch off capacitance (2) 2. refer to figure 6 on page 10 dc = 0.25 v ac = 0.5 v pp f=1mhz ?45pf c on switch on capacitance (3) 3. refer to figure 7 on page 11 dc = 0.25 v ac = 0.5 v pp f=1mhz ? 9.5 11 pf symbol parameter test condition value unit -40 to 85 c min typ max i cc quiescent power supply v cc = 3.6 v, v in = v cc or gnd ? 150 500 a symbol parameter test condition value unit -40 to 85 c min typ max x talk crosstalk (1) 1. refer to figure 9 on page 12 r l = 100 f = 250 mhz ?-45?db o irr off isolation (2) 2. refer to figure 10 on page 13 r l = 100 f = 250 mhz ?-37?db bw -3 db bandwidth (3) 3. refer to figure 8 on page 11 r l = 100 0 < v in 3.6 v ? 600 ? mhz
electrical characteristics ST3DV520A 8/19 doc id 16885 rev 1 table 10. switching characteristics (t a = 25 c, v cc = 3.3 v 10 % ) table 11. esd performance symbol parameter test condition value unit min typ max t pd propagation delay v cc = 3 to 3.6 v ? 0.25 ? ns t pzh , t pzl line enable time, se to x to x0 or x to x1 v cc = 3 to 3.6 v 0.5 6.5 15 ns t phz , t plz line disable time, se to x to x0 or x to x1 v cc = 3 to 3.6 v 0.5 6.5 8.5 ns t sk(o) output skew between center port to any other port v cc = 3 to 3.6 v ? 0.1 0.2 ns t sk(p) skew between opposite transition of the same output (t phl , t plh ) v cc = 3 to 3.6 v ? 0.1 0.2 ns symbol test condition value unit min typ max esd contact discharge (1) iec61000-4-2 1. refer to figure 3: diagram for suggested vdd decoupling on page 9 . ?8?kv human body model (mil-std-883) ?15?kv
ST3DV520A electrical characteristics doc id 16885 rev 1 9/19 figure 3. diagram for suggested v dd decoupling 1. applicable for system level esd test figure 4. test circuit for leakage current (i off ) 1 4 6 9 10 13 16 18 gnd vdd gnd gnd vdd gnd gnd vdd 21 24 27 28 33 38 39 44 dut 49 50 53 55 56 gnd vdd gnd gnd gnd gnd vdd gnd vdd gnd gnd vdd gnd note: 100nf capacitors must be used as local bypass capacitors between the adjacent vdd and gnd pairs (total 7) c=2uf or 4.7uf i off(sw) sel vdd gnd 3.6 v 3.6 v 3.6 v a0 a1 a float
electrical characteristics ST3DV520A 10/19 doc id 16885 rev 1 figure 5. test circuit for sel pin input capacitance (c in ) figure 6. test circuit for switch off capacitance (c off ) lcr meter dc = 0.25 v ac = 0.5 vpp f = 1 mhz dut s el 3 . 3 v vdd gnd lcr meter dc = 0.25 v ac = 0.5 vpp f = 1 mhz dut s el 3 . 3 v vdd gnd l or h h for ch a nnel 0 a nd l for ch a nnel 1 a a0 a1
ST3DV520A electrical characteristics doc id 16885 rev 1 11/19 figure 7. test circuit for switch on capacitance (c on ) figure 8. test circuit for bandwidth measurement (bw) frequency response is measured at the output of the on channel. for example, when v sel = 0 and a is the input, the output is measured at a0. all unused analog i/o ports are left open. hp8753es setup: average = 4 r bw = 3 khz v bias = 0.35 v st = 2 s p1 = 0 dbm lcr meter dc = 0.25 v ac = 0.5 vpp f = 1 mhz dut s el 3 . 3 v vdd gnd l or h l for ch a nnel 0 a nd h for ch a nnel 1 a a0 a1 aa0
electrical characteristics ST3DV520A 12/19 doc id 16885 rev 1 figure 9. test circuit for crosstalk measurement (x talk ) crosstalk is measured at the output of the non-adjacent on channel. for example, when v sel = 0, and b is the input, the output is measured at d. all unused analog input ports are connected to gnd and output ports are left open. hp8753es setup: average = 4 r bw = 3 khz v bias = 0.35 v st = 2 s p1 = 0 dbm a b c d a0 b0 a1 b1 c0 d0 c1 d1 dut
ST3DV520A electrical characteristics doc id 16885 rev 1 13/19 figure 10. test circuit for off isolation measurement (o irr ) off isolation is measured at the output of the off channel. for example, when v sel =0, and b is the input, the output is measured at b1. all unused analog input ports are connected to gnd and output ports are left open. hp8753es setup: average = 4 r bw = 3 khz v bias = 0.35 v st = 2 s p1 = 0 dbm a a0 b0 b a1 b1
package mechanical data ST3DV520A 14/19 doc id 16885 rev 1 4 package mechanical data in order to meet environmental requirements, st offers these devices in different grades of ecopack ? packages, depending on their level of environmental compliance. ecopack ? specifications, grade definitions and product status are available at: www.st.com . ecopack ? is an st trademark. figure 11. package outline for qfn56 (11 x 5 mm) - pitch 0.5 mm 7576 3 29-a
ST3DV520A package mechanical data doc id 16885 rev 1 15/19 figure 13. footprint recommendation for qfn56 (11 x 5 mm) - pitch 0.5 mm figure 12. mechanical data for qfn56 (11 x 5 mm) - pitch 0.5 mm symbol millimeters min typ max a 0.700.750.80 a1 ? ? 0.05 a3 0.20 ? b 0.200.250.30 d 10.90 11.00 11.10 d2 8.30 8.40 8.50 d3 ?9.50? e 4.905.005.10 e2 2.30 2.40 2.50 e3 ?3.50? e ? 0.50 ? l 0.300.400.50
package mechanical data ST3DV520A 16/19 doc id 16885 rev 1 figure 14. carrier tape information for qfn56 (11 x 5 mm) - pitch 0.5 mm 7875978_k
ST3DV520A package mechanical data doc id 16885 rev 1 17/19 figure 15. reel information for qfn56 (11 x 5 mm) - pitch 0.5 mm
revision history ST3DV520A 18/19 doc id 16885 rev 1 5 revision history table 12. document revision history date revision changes 11-dec-2009 1 initial release.
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