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supertex inc. supertex inc. www.supertex.com hv256 doc.# dsfp-hv256 d070813 features ? 32 independent high voltage ampliiers ? 300v operating voltage ? 295v output voltage ? 2.2v/s typical output slew rate ? adjustable output current source limit ? adjustable output current sink limit ? internal closed loop gain of 72v/v ? 12m? feedback impedance ? layout ideal for die applications applications ? mems (microelectromechanical systems) driver ? piezoelectric transducer driver ? optical crosspoint switches (using mems technology) general descriptionthe supertex hv256 is a 32-channel, high voltage, ampliier array integrated circuit. it operates on a single high voltage supply, up to 300v, and two low voltage supplies, v dd and v nn . the input voltage range is from 0 to 4.096v. the internal closed loop gain is 72v/v, giving an output voltage of 295v when 4.096v is applied. input voltages of up to 5.0v can be applied, but will cause the output to saturate. the maximum output voltage swing is 5.0v below the v pp high voltage supply. the outputs can drive capacitive loads of up to 3000pf. the maximum output source and sink current can be adjusted by using two external resistors. an external r source resistor controls the maximum sourcing current and an external r sink resistor controls the maximum sinking current. the current limit is approximately 12.5v divided by the external resistor value. the setting is common for all 32 outputs. a low voltage silicon junction diode is made available to help monitor the die temperature. typical application circuit 32-channel high voltage ampliier array v in 0 v in 0 v in 0 v in 0 hv out 0 hv out 1 hv out 2 hv out 3 hv256 agnd mems array y y x x hv out 30 hv out 31 vnn vdd vpp v in 30 v in 31 micro processor dacdac dac dac dacdac high voltage op-amp array rsourcersink downloaded from: http:///
2 hv256 supertex inc. www.supertex.com doc.# dsfp-hv256 d070813 operating conditions absolute maximum ratings absolute maximum ratings are those values beyond which damage to the device may occur. functional operation under these conditions is not implied. continuous operation of the device at the absolute rating level may affect device reliability. all voltages are referenced to device ground. parameter value v pp , high voltage supply 310v av dd , analog low voltage positive supply 8.0v dv dd , digital low voltage positive supply 8.0v av nn , analog low voltage negative supply -7.0v dv nn , digital low voltage negative supply -7.0v logic input voltage -0.5v to dv dd v sig , analog input signal 0v to 6.0v storage temperature range -65c to 150c maximum junction temperature 150c sym parameter min typ max units conditions v pp high voltage positive supply 125 - 300 v --- v dd low voltage positive supply 6.0 - 7.5 v --- v nn low voltage negative supply -4.5 - -6.5 v --- i pp v pp supply current - - 0.8 ma v pp = 300v, all hv out = 0v no load i dd v dd supply current - - 5.0 ma v dd = 6.0v to 7.5v i nn v nn supply current -6.0 - - ma v nn = -4.5v to -6.5v t j operating temperature range -10 - 85 c --- product marking 100-lead mqfp yy = year sealed ww = week sealed l = lot number c = country of origin a = assembler id = ?green? packaging top marking hv256fg llllllllll yyww cccccccc aaa pin coniguration 1 100 100-lead mqfp (top view) package may or may not include the following marks: si or ordering information part number package option packing HV256FG-G 100-lead mqfp 66/tray typical thermal resistance package ja 100-lead mqfp 39 o c/w -g denotes a lead (pb)-free / rohs compliant package downloaded from: http:///
3 hv256 supertex inc. www.supertex.com doc.# dsfp-hv256 d070813 temperature diode sym min typ max units conditions piv peak inverse voltage - - 5.0 v cathode to anode v f forward diode drop - 0.6 - v i f = 100a, anode to cathode at t a = 25c i f forward diode current - - 100 a anode to cathode t c v f temperature coeficient - -2.2 - mv/c anode to cathode sym parameter min typ max units conditions hv out hv out voltage swing 0 - v pp -5.0 v --- v in input voltage range 0 - 5.0 v --- v inos input voltage offset - - 50 mv input referred sr hv out slew rate rise - 2.2 - v/s no load hv out slew rate fall - 2.0 - v/s no load bw hv out -3db channel bandwidth - 4.0 - khz v pp = 300v a o open loop gain 70 100 - db --- a v closed loop gain 68.4 72.0 75.6 v/v --- r fb feedback resistance from hv out to ground 9.6 12.0 - m? --- c load hv out capacitive load 0 - 3000 pf --- i source hv out sourcing current limiting range 385 550 715 a r source = 25k? i sink hv out sinking current limiting range 385 550 715 a r sink = 25k? r source external resistance range for setting maximum current source 25 - 250 k? --- r sink external resistance range for setting maximum current sink 25 - 250 k? --- ct dc dc channel to channel crosstalk -80 - - db --- psrr power supply rejection ratio for v pp , v dd , v nn -40 - - db --- electrical characteristics (over operating conditions, unless otherwise speciied downloaded from: http:///
4 hv256 supertex inc. www.supertex.com doc.# dsfp-hv256 d070813 hv256 block diagram hv out 0 hv out 31 hv out 1 gnd vpp vnn - + r 71r vdd vpp - + vin0 vpp - + output current source limiting for all hv out rsource r r rsink output current sink limiting for all hv ou t 71r 71r anode cathode to internal vpp bus byp-vppbyp-vdd byp-vnn to internal vnn bus to internal vdd bus vin1 vin31 vdd vdd vnn vnn downloaded from: http:///
5 hv256 supertex inc. www.supertex.com doc.# dsfp-hv256 d070813 power up/down issuesexternal diode protection the device can be damaged due to improper power up / down sequence. to prevent damage, please follow the acceptable power up / down sequences, and add two external diodes as shown in the diagram on the right. the irst diode is a high voltage diode across vpp and vdd, where the anode of the diode is connected to vdd and the cathode of the diode is connected to vpp. any low current, high voltage diode, such as a 1n4004, will be adequate. the second diode is a schottky diode across vnn and dgnd, where the anode of the schottky diode is connected to vnn, and the cathode is connected to dgnd. any low current schottky diode such as a 1n5817 will be adequate. acceptable power up sequences the hv256 can be powered up with any of the following sequences listed below. 1) vpp 2) vnn 3) vdd 4) inputs and anode 1) vnn 2) vdd 3) vpp 4) inputs and anode 1) vdd & vnn 2) inputs 3) vpp 4) anode acceptable power down sequences the hv256 can be powered down with any of the following sequences listed below: 1) inputs and anode 2) vdd 3) vnn 4) vpp 1) inputs and anode 2) vpp 3) vdd 4) vnn 1) anode 2) vpp 3) inputs 4) vnn & vdd external diode protection connectionsuggested power up/down sequence the hv256 needs all power supplies to be fully up and all channels refreshed with v sig = 0v to force all high voltage outputs to 0v. before that time, the high voltage outputs may have temporary voltage excursions above or below gnd level depending on selected power up sequence. to minimize the excursions: 1. the vdd and vnn power supplies should be applied at the same time (or within a few nanoseconds). suggested vpp ramp up speed should be 10msec or longer and ramp down to be 1msec or longer. vdd vpp 1n4004 or similar vnn dgnd 1n5817 or similar recommended power up/down timing 0v v nn 0v 300 v 0v hv out 0v v in gnd +/- v offset x 72 0v 6.5v -5.5v v dd v pp hv out level at power up power up sequence v nn before v dd 6.5v 0v 0v -5.5v 0v -5.5v 0v 6.5v 0v 6.5v 0v 0v -5.5v v pp v dd v nn hv out 0v v dd before v nn v pp v dd v nn hv out downloaded from: http:///
6 hv256 supertex inc. www.supertex.com doc.# dsfp-hv256 d070813 rsink / rsource the vdd_byp, vdd_byp, and vnn_byp pins are internal, high impedance current, mirror gate nodes, brought out to mantain stable opamp biasing currents in noisy power supply environments. 0.1uf/25v bypass capacitors, added from the vpp_byp pin to vpp, from vdd_byp pin to vdd, and from vnn_byp to vnn, will force the high impedance gate nodes to follow the luctuation of power lines. the expected voltages at the vdd_byp, and vnn_byp pins are typically 1.5 volts from their respectful power supply. the expected voltage at vpp_byp is typically 3.0v below v pp . byp_vpp hvopamp vdd vpp byp_vnn vnn set by rsource set by rsink hv out 0 byp_vnn cap 0.1f/25v current limit current limit to internal biasing hvopamp hv out 31 byp_vdd cap 0.1f/25v byp_vpp cap 0.1f/25v byp_vdd typical characteristics i sink vs r sink (v pp = 300v, v dd = 6.5v, v nn = 5.5v, t a = 25 o c) r sink (k) i sink (a) min max 600 500 400 300 200 100 0 25 150 250 min max i source vs r source (v pp = 300v, v dd = 6.5v, v nn = 5.5v, t a = 25 o c) r source (k) i source (a) 600 500 400 300 200 100 0 25 150 250 downloaded from: http:///
7 hv256 supertex inc. www.supertex.com doc.# dsfp-hv256 d070813 typical characteristics (cont.) 700 600 500 400 300 diode biasing current (a) v f (mv) temperature diode vs temperature (v pp = 300v, v dd = 6.5v, v nn = 5.5v) -10 o c 85 o c 25 o c min max min max min max 0 20 40 60 80 100 frequency (hz) -50 -40 -30 -20 -10 0 10 100 1k 10k 100k 1m v pp psrr (db) v pp psrr vs frequency (v pp = 300v, v dd = 6.5v, v nn = 5.5v, t a = 25 o c) frequency (hz) v dd psrr (db) v dd psrr vs frequency (v pp = 300v, v dd = 6.5v, v nn = 5.5v, t a = 25 o c) -50 -40 -30 -20 -10 0 10 100 1k 10k 100k 1m frequency (hz) v nn psrr (db) v nn psrr vs frequency (v pp = 300v, v dd = 6.5v, v nn = 5.5v, t a = 25 o c) -50 -40 -30 -20 -10 0 10 100 1k 10k 100k 1m 3.53.0 2.5 2.0 1.5 -2.0-2.5 -3.0 -3.5 -4.0 -4.5 0 1.0 2.0 3.0 4.0 v in (volts) input offset (mv) offset at -10 o c offset at 25 o c offset at 85 o c input offset vs v in and te mperature (v pp = 300v, v dd = 6.5v, v nn = 5.5v ) 0 1 2 3 4 v in (volts) gain gain vs v in (v pp = 300v, v dd = 6.5v, v nn = 5.5v, t a = -10 o , +25 o , +85 o c) 73.9773.96 73.95 73.94 73.93 72.7372.72 72.71 72.70 72.69 downloaded from: http:///
8 hv256 supertex inc. www.supertex.com doc.# dsfp-hv256 d070813 pad coniguration (not drawn to scale) hv out 0 hv out 1 hv out 2 hv out 3 hv out 4 hv out 5 hv out 6 hv out 7 hv out 8 hv out 9 hv out 10 hv out 11 hv out 12 hv out 13 hv out 14 hv out 15 hv out 16 hv out 17 hv out 18 hv out 19 hv out 20 hv out 21 hv out 22 hv out 23 hv out 24 hv out 25 hv out 26 hv out 27 hv out 28 hv out 29 hv out 30 hv out 31 vpp vpp byp-vpp rsource rsink vddvnn gnd gnd vdd vnn vddvnn gnd vddvnn gnd byp-vnn byp-vdd do not bond. for testing only. v in 0 v in 1 v in 2 v in 3 v in 4 v in 5 v in 6 v in 7 v in 8 v in 9 v in 10 v in 11 v in 12 v in 13 v in 14 v in 15 v in 16 v in 17 v in 18 v in 19 v in 20 v in 21 v in 22 v in 23 v in 24 v in 25 v in 26 v in 27 v in 28 v in 29 v in 30 v in 31 do not bond. leave floating. cathode anode do not bond. leave floating. downloaded from: http:///
9 hv256 supertex inc. www.supertex.com doc.# dsfp-hv256 d070813 pad coordinateschip size: 17160 m x 5830m center of die is (0,0) pad name x (m) y (m) vpp -8338.5 2708.5 hv out 0 -7895.0 2305.5 hv out 1 7448.5 2305.5 hv out 2 -7001.5 2305.5 hv out 3 -6554.5 2305.5 hv out 4 -6107.5 2305.5 hv out 5 -5660.5 2305.5 hv out 6 -5213.5 2305.5 hv out 7 -4776.5 2305.5 hv out 8 -4319.5 2305.5 hv out 9 -3872.5 2305.5 hv out 10 -3425.5 2305.5 hv out 11 -2978.5 2305.5 hv out 12 -2513.5 2305.5 hv out 13 -2084.5 2305.5 hv out 14 -1637.5 2305.5 hv out 15 -1190.5 2305.5 hv out 16 -743.5 2305.5 hv out 17 -296.5 2305.5 hv out 18 150.0 2305.5 hv out 19 597.5 2305.5 hv out 20 1044.5 2305.5 hv out 21 1491.5 2305.5 hv out 22 1938.5 2305.5 hv out 23 2385.5 2305.5 hv out 24 2832.5 2305.5 hv out 25 3279.5 2305.5 hv out 26 3726.5 2305.5 hv out 27 4173.5 2305.5 hv out 28 4620.5 2305.5 pad name x (m) y (m) hv out 29 5067.5 2305.5 hv out 30 5514.5 2305.5 hv out 31 5961.5 2305.5 vpp 6659.0 2709.0 byp-vpp 7045.0 2709.0 rsource 7489.0 2709.0 rsink 7969.0 2709.0 cathode 8366.0 2709.0 anode 8366.0 2709.0 vnn 8047.0 425.0 byp-vdd 8047.0 125.5 byp-vnn 8047.0 -135.5 vdd 8047.0 -704.5 gnd 8047.0 -1424.0 vnn 8066.5 -1590.0 vdd 8066.5 -1958.5 gnd 7867.0 -2192.0 v in 31 5043.5 -2686.0 v in 30 4638.5 -2686.0 v in 29 4233.5 -2686.0 v in 28 3828.5 -2686.0 v in 27 3423.5 -2686.0 v in 26 3018.5 -2686.0 v in 25 2613.5 -2686.0 v in 24 2208.5 -2686.0 v in 23 1803.5 -2686.0 v in 22 1398.5 -2686.0 v in 21 993.5 -2686.0 v in 20 588.5 -2686.0 v in 19 183.5 -2686.0 pad name x (m) y (m) v in 18 -221.5 -2686.0 v in 17 -626.5 -2686.0 v in 16 -1031.5 -2686.0 v in 15 -1436.5 -2686.0 v in 14 -2412.5 -2686.0 v in 13 -2817.0 -2686.0 v in 12 -3222.0 -2686.0 v in 11 -3627.0 -2686.0 v in 10 -4032.0 -2686.0 v in 9 -4437.0 -2686.0 v in 8 -4842.0 -2686.0 v in 7 -5247.0 -2686.0 v in 6 -5652.0 -2686.0 v in 5 -6052.0 -2686.0 v in 4 -6462.0 -2686.0 v in 3 -6867.0 -2686.0 v in 2 -7272.0 -2686.0 v in 1 -7677.0 -2686.0 v in 0 -8082.0 -2686.0 vdd -8373.0 -2250.5 vnn -8373.0 -1949.0 gnd -8367.0 -1561.0 vdd -8387.0 -1143.0 vnn -8338.5 577.5 gnd -8341.0 916.5 downloaded from: http:///
10 hv256 supertex inc. www.supertex.com doc.# dsfp-hv256 d070813 pin description pin # function description 1 hv out 31 ampliier outputs. 2 hv out 30 3 hv out 29 4 hv out 28 5 hv out 27 6 hv out 26 7 hv out 25 8 hv out 24 9 hv out 23 10 hv out 22 11 hv out 21 12 hv out 20 13 hv out 19 14 hv out 18 15 hv out 17 16 hv out 16 17 hv out 15 18 hv out 14 19 hv out 13 20 hv out 12 21 hv out 11 22 hv out 10 23 hv out 9 24 hv out 8 25 hv out 7 26 hv out 6 27 hv out 5 28 hv out 4 29 hv out 3 30 hv out 2 31 hv out 1 32 hv out 0 33 vpp high voltage positive supply. there are two pads. 34-38 nc no connect. 39 gnd digital ground. there are four pads. downloaded from: http:///
11 hv256 supertex inc. www.supertex.com doc.# dsfp-hv256 d070813 pin description (cont.) pin # function description 40 vnn analog low voltage negative supply. there are four pads. 41 nc no connect. 42 vdd analog low voltage positive supply. there are four pads. 43 gnd digital ground. there are four pads. 44 vnn analog low voltage negative supply. there are four pads. 45 vdd analog low voltage positive supply. there are four pads. 46-47 nc no connect. 48 v in 0 ampliier inputs. 49 v in 1 50 v in 2 51 v in 3 52 v in 4 53 v in 5 54 v in 6 55 v in 7 56 v in 8 57 v in 9 58 v in 10 59 v in 11 60 v in 12 61 v in 13 62 v in 14 63 v in 15 64 v in 16 65 v in 17 66 v in 18 67 v in 19 68 v in 20 downloaded from: http:///
12 hv256 supertex inc. www.supertex.com doc.# dsfp-hv256 d070813 pin # function description 69 v in 21 ampliier inputs. 70 v in 22 71 v in 23 72 v in 24 73 v in 25 74 v in 26 75 v in 27 76 v in 28 77 v in 29 78 v in 30 79 v in 31 80-85 nc no connect. 86 gnd digital ground. there are four pads. 87 vdd analog low voltage positive supply. there are four pads. 88 vnn analog low voltage negative supply. there are four pads. 89 gnd digital ground. there are four pads. 90 nc no connect. 91 vdd analog low voltage positive supply. there are four pads. 92 byp-vnn a low voltage 1.0 to 10nf decoupling decoupling capacitor across vnn and byp-vnn is required. 93 byp-vdd a low voltage 1.0 to 10nf decoupling decoupling capacitor across vdd and byp-vdd is required. 94 vnn analog low voltage negative supply. there are four pads. 95 anode anode side of of a low voltage silicon diode that can be used to monitor die temperature. 96 cathode cathode side of of a low voltage silicon diode that can be used to monitor die temperature. 97 rsink external resistor from rsink to vnn sets output current sinking limit. current limit is approximately 12.5v divided by rsink resistor value. 98 rsource external resistor from rsource to vnn sets output current sourcing limit. current limit is approximately 12.5v divided by rsource resistor value. 99 byp-vpp a low voltage 1.0 to 10nf decoupling decoupling capacitor across vpp and byp-vpp is required. 100 vpp high voltage positive supply. there are two pads. pin description (cont.) downloaded from: http:///
supertex inc. does not recommend the use of its products in life support applications, and will not knowingly sell them for use in such applications unless it receives an adequate ?product liability indemnification insurance agreement.? supertex inc . does not assume responsibility for use of devices described, and limits its liabilit y to the replacement of the devices determined defective due to workmanship. no responsibility is assumed for possible omissions and inaccuracies. circuitry and specifications are subject to change without notice. for the latest product specifications refer to the supertex inc . (website: http//www .supertex.com) ?2013 supertex inc. all rights reserved. unauthorized use or reproduction is prohibited. supertex inc. 1235 bordeaux drive, sunnyvale, ca 94089 t el: 408-222-8888 www.supertex.co m 13 hv256 (the package drawing(s) in this data sheet may not relect the most current speciications. for the latest package outline information go to http://www.supertex.com/packaging.html .) doc.# dsfp-hv256 d070813 100-lead mqfp package outline (fg) 20.00x14.00mm body, 3.15mm height (max), 0.65mm pitch, 3.20mm footprint symbol a a1 a2 b d d1 e e1 e l l1 l2 1 dimension (mm) min 2.50* 0.00 2.50 0.22 22.95* 19.80* 16.95* 13.80* 0.65 bsc 0.73 1.60 ref 0.25 bsc 0 o 5 o nom - - 2.70 - 23.20 20.00 17.20 14.00 0.88 - - max 3.15 0.25 2.90 0.40 23.45* 20.20* 17.45* 14.20* 1.03 7 o 16 o jedec registration ms-022, variation gc-2, issue b, dec. 1996. * this dimension is not speciied in the jedec drawing. drawings are not to scale. supertex doc. #: dspd-100mqfpfg, version f041309. 1 100 top vi ew vi ew b view b b e side view a2 a a1 e e1 d d1 seating plane note 1 (index area e1/4 x d1/4) seating plane gauge plane l l1 l2 1 note: 1. a pin 1 identiier must be located in the index area indicated. the pin 1 identiier can be: a molded mark/identiier; an embedded metal marker; or a printed indicator. downloaded from: http:///

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