View ES51981_4497969.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

03/01/06 1 ES51981 3 1/2 auto dmm features ? 2000 count display ? full automatic measurement *voltage measurement *current measurement *resistor measurement ? range change function ? data hold function ? diode measurement ? adp mode with external reference voltage ? serial data output (rs232 format) ? auto power off (10 mins) and re-power on ? low battery detect (3v and 9v) ? 3v dc power supply ? back light function description ES51981 is an integrated analog - to - digital converter(adc) with 2000 counts lcd display ,automatic range selection, and 3v dc power supply. automatic range selection is provide d for voltage(ac/dc) measurement, resistor measurement and current measurement. expensive and bulky mechanical range switches are not required. other features include data holding, diode measurement, temperature measurement, continuity checking, low battery detection, auto- power off, re- power on, and rs232 data output. application digital multimeter
03/01/06 2 ES51981 3 1/2 auto dmm pin assignment va + va - adp sgnd vr1 nc vbar nc n c n c n c sleep n c nc rs232 bklit seg16 seg15 seg13 seg14 nc v + v + nc cl + cl - cil cazl bufl ivsh ivsl ovx ovh ovsg nc or1 vr5 vr4 vr3 vr2 test5 acvl acvh nc adi nc ado nc vrh vr nc nc seg12 seg11 seg10 seg09 seg08 seg07 seg05 seg06 seg05 seg04 seg03 seg02 seg01 bp4 bp3 bp2 bp1 annunc nc buzin buzout nc osc2 osc1 nc xtal nc bkout nc hold range slacdc key fc5 fc4 fc3 fc2 fc1 nc c+ c- nc sdo lbat9 v- v- dgnd agnd agnd 1 10 20 30 40 50 60 70 80 90 100
03/01/06 3 ES51981 3 1/2 auto dmm pin description pin no symbol type description 1 nc 2 v+ p positive supply voltage, output of on-chip dc-dc converter. 3 v+ p positive supply voltage, output of on-chip dc-dc converter. 4nc 5 cl+ io high resolution positive co nnection for reference capacitor. 6 cl- io high resolution negative connection for reference capacitor. 7 cil o high resolution integrator output. connected to integral capacitor 8 cazl o high resolution auto-zero capacitor connection. 9 bufl o integral resistor connection for high resolution buffer output 10 ivsh i high current measurement input. 11 ivsl i low current measurement input 12 ovx i input high voltage for resistance measurement 13 ovh i output connection for resistance measurement 14 ovsg i sense low voltage for resistance measurement 15 nc 16 or1 o reference resistor connection for 399.9 ? range 17 vr5 o voltage measurement 10000 attenuator(2000v) 18 vr4 o voltage measurement 1000 attenuator(200.0v) 19 vr3 o voltage measurement 100 attenuator(20.00v) 20 vr2 o voltage measurement 10 attenuator(2.000v) 21 test 5 i/o test pin 22 acvl o negative output of ac to dc converter 23 acvh o positive output of ac to dc converter. 24 nc 25 adi i negative input of internal ac to dc opamp. 26 nc 27 ado o output of internal ac to dc opamp. 28 nc 29 vrh o output of band-gap voltage reference .typically ?1.2v 30 vr i reference input voltage connection. typically ?100mv 31 va+ i for adp. deintegrating voltage positive input. the input should be higher than va-. 32 va- for adp. deintegrating voltage negative input. the input should be lower than va+. 33 adp i adp input 34 sgnd g signal ground 35 vr1 i measurement input 36 nc 37 vbar i decimal point control for temp erature measurement in adp mode. 38 nc 39 nc 40 nc 41 nc 42 sleep o asserts low in the sleep mode . see page 8, function description 43 nc 44 nc 45 rs232 i pulse low to enable serial data output. 46 bklit i back light function. pulse low to set bkout pin output 47~50 seg16~seg13 o lcd segment line 16~13 continued on next page??.
03/01/06 4 ES51981 3 1/2 auto dmm ?continued from previous page 51 nc 52 nc 53~64 seg12~seg01 o lcd segment line 12~01 65 bp4 o lcd backplane 4 66 bp3 o lcd backplane 3 67 bp2 o lcd backplane 2 68 bp1 o lcd backplane 1 69 annunc o square wave output at the backplane frequency, synchronized to bp1. annunc can be used to control display annunciator. con- nect an lcd segment to annunc to turn it on; connect an lcd segment to its backplane to turn it off. 70 nc 71 buzin i enables the buzzer. low active. 72 buzout o outputs an 2khz audio frequency signal for driving piezoelectric buzzer when buzin is low. 73 nc 74 osc2 o crystal oscillator output connection 75 osc1 i crystal oscillator input connection 76 nc 77 xtal i the chip uses internal rc oscillator if pin is connected to v-, and uses external crystal oscillator if this pin is floating or connected to dgnd 78 nc 79 bkout o if bklit function is enabled, th is pin will change from ?3v to +3v for 60 sec, once press bklit pin again within 60 sec, this pin will change back to ?3v. 80 nc 81 hold i pulse low to enable hold mode. 82 range i pulse low to enable manual mode and manual range selection. 83 slacdc i select ac/dc initial state. this pin is pull low 84 key i pulse low to change mode. in adp mode, if this pin is connected to v-, the buzzer output will be off when the adp input overflows. 85 fc5 i switch 5 for function selection. 86 fc4 i switch 4 for function selection. 87 fc3 i switch 3 for function selection. 88 fc2 i switch 2 for function selection. 89 fc1 i switch 1 for function selection. 90 nc 91 c+ o positive capacitor connection for on-chip dc-dc converter. 92 c- o negative capacitor connection for on-chip dc-dc converter. 93 nc 94 sdo o rs232 compliant serial data output. 95 lbat9 i low battery configuration. if 3v battery is used, connect it to agnd . the default low-battery threshold voltage is ?2.3v. if 9v battery is used, the low battery annunciator is displayed when the voltage of this pin is less than vrh (-1.2v) 96 v- p negative supply voltage. connecting to battery negative terminal. 97 v- p negative supply voltage. connecting to battery negative terminal. 98 dgnd g digital ground, connected to battery positive terminal. 99 agnd g analog ground. 100 agnd g analog ground.
03/01/06 5 ES51981 3 1/2 auto dmm absolute maximum ratings characteristic rating supply voltage (v- to agnd) -4v a nalog input voltage v- -0.6 to v+ +0.6 v + v+ (agnd/dgnd+0.5v) a gnd/dgnd agnd/dgnd (v- -0.5v) d igital input v- -0.6 to dgnd +0.6 p ower dissipation. flat package 500mw operating temperature 0 to 70 storage temperature -25 to 125 electrical characteristics ta=25 , v- = -3v parameter symbol test condition min. typ. max units power supply v- -3.5 -3.0 -2.2 v i dd normal operation 0.9 1.1 ma operating supply current in dcv mode i ss in sleep mode 0.1 5 a voltage roll-over error rev 0.1 %f.s 10m ? input resistor voltage nonlinearity nlv best case straight line 0.1 %f.s input leakage -10 1 10 pa low battery flag voltage v- to agnd -2.5 -2.3 -2.1 v zero input reading 10m ? input resistor -000 000 +000 counts reference voltage and open circuit voltage for 200 ? measurement v ref 100k ? resistor between vrh and agnd -1.3 -1.2 -1.1 v peak to peak backplane drive voltage -3.5v v -2.2v 3.00 3.2 3.40 v counter time base period f osc = 4mhz 1 sec open circuit voltage for measurement (except 200) and continuity mode -0.54 -0.47 -0.4 v between v- pin and hold, range, key, fc1, fc2, fc3, fc4, fc5, xtal, bklit 1.2 internal pull-high to 0v current between v- pin and rs232 11 a internal pull-low to v- current between gnd pi n and slacdc 1.5 a 1% 40-400 ac frequency response at 2.000v range 5% 400-2000 hz reference voltage temperature coefficient tc rf 100k ? resister between vrh 0 03/01/06 6 ES51981 3 1/2 auto dmm function description 1. operating modes 1.1 voltage measurement a reconfigurable voltage divider automati cally provides a suitable range in voltage measurement mode. the following table summ arizes the full scale ranges in each configuration. configuration full scale range divider ratio resister connection vr1 200.0mv 1 - vr2 2.000v 1/10 r2 / (r1+r2) vr3 20.00v 1/100 r3 / (r1+r3) vr3 200.0v 1/1000 r4 / (r1+r4) vr5 2000v 1/10000 r5 / (r1+r5) 1. 200.0mv range only exists in manual mode. 2. in the 2000v range, if the digit numbers is larger than 1000v, lcd will display ?ol?. the measurement of true rms using es636 if es636 (or other true rms-to -dc converter chip) is used for true rms measurement, the suggested application circuit is shown below. when es636 is used for true rms, ado and adi pin short togeth er, test5 pin keeps floati ng, and acvl pin connects to sgnd. 1 2 3 4 5 6 7 14 13 12 11 es636 10 8 9 +vs -vs 150 470k 500k +vs cav -vs adi ado acvh acvl 100 1k 10k 101k 1.11m ovsg or1 vr5 vr4 vr3 vr2 200
03/01/06 7 ES51981 3 1/2 auto dmm 1.2 resistance measurement a reconfigurable divider automa tically provides a suitable fu ll scale range in resistance measurement mode. the following table summ arizes the full scale ranges and the reference resistors in each configuration. configuration full scale range divider ratio resister connection or1 200.0 ? r6 100 ? or2 2.000k ? r5 1k ? or3 20.00k ? r4 10k ? or4 200.0k ? r1 r3 100k ? or5 2.000m ? r1 r2 1m ? or6 20.00m ? r1 10m ? 1.3 current measurement current measurement has three modes. the following table summarizes the full scale range of each mode. mode range selection full scale automatic mode 1 a 200.0a / 2000a automatic mode 2 ma 20.00ma / 200.0ma automatic mode 3 a 20.00a/2.000a manual mode a 20.00a 1.4 continuity check continuity check shares the same configuration with 200.0 ? manual resistance measurement mode, but with buzzer output to indicate continuity. the buzzer generates a 2khz sound whenever the digit number less than 25 ? . because the cycle time of measurement is only 50ms, the least significant digit will not display. 1.5 diode measurement diode measurement mode shares the same configuration with 2.000v manual voltage measurement mode. if the test circuit is open or the voltage dr op between the two ports of the device (diode) under test is larger than 2v, the lcd panel will show ?ol?. the buzzer generates a 2khz sound whenever th e digit number is less than 0.25v. because the cycle time of measurement is only 50ms, the least significant digit will not display. 1.6 auto power off ES51981 has a default auto power off functi on. if the meter idles for more than 10 minutes, the chip automatically turns the power off. when th is happens, the state of the
03/01/06 8 ES51981 3 1/2 auto dmm meter is saved. in order to disable auto power off function, power on the meter when any of the push function, except for hold, is pressed down. in addition, when rs232 output is active, the auto power-off functi on is also disabled. the apo sign on the lcd panel indicates whether the auto power-off is enabled or not. note : powering on the meter while pressing hold turns on all lcd segment until hold is pressed again. 1.7 sleep the meter enters sleep mode after auto pow er off. the sleep pin asserts low (-3v) in the sleep mode, and asserts high (+3v, not 0v) after re-power on. 1.8 re-power on after auto power-off, pushing any of the pus h function or changing the rotary mode can turn on the meter again. if the meter is re -powered on by changing the rotary mode, the saved state is cleared. if the meter is re- powered on by push functi ons, the chip restores the saved state and enters hold mode. the lcd displays the saved value. 2. measurement mode switching measurement mode depends on the logic level of fc1, fc2, fc3, fc4, fc5, and key. when fc5 is high, the measurement m odes are listed in the following table. slacdc fc1 fc2 fc3 fc4 mode function of key 0 1011 voltage measurement dcv(initial) ? acv 0 1101current measurement(a) dca(initial) ? aca 0 1111current measurement(ma) dca(initial) ? aca 0 1001 manual current measurement(a) dca (initial) ? aca 0 0000auto current measurement(a ) dca(initial) 1 1011 voltage measurement acv (initial) ? dcv 1 1101current measurement(a) aca(initial) ? dca 1 1111current measurement(ma) aca (initial) ? dca 1 1001 manual current measurement(a) aca (initial) ? dca 1 0000auto current measurement(a ) aca (initial) x 0011resistance measurement ? ? continuity x 0101resistance measurement ? ? diode x 0001 continuity check continuity diode x 0111resistance measurement ? ? continuity ? diode x 0100 temperature( ) ? ps. x means ?don?t care?
03/01/06 9 ES51981 3 1/2 auto dmm when fc5 is low, key is disable. th e corresponding measurement modes are list below slacdc fc1 fc2 fc3 fc4 mode 0 1011ac voltage measurement 0 1101ac current measurement(a) 0 1111ac current measurement(ma ) 0 1001 manual ac current measurement(a) 0 0000 auto ac current measurement(a) 1 1011dc voltage measurement 1 1101dc current measurement(a) 1 1111dc current measurement(ma ) 1 1001 manual dc current measurement(a) 1 0000 auto dc current measurement(a) x 0011resistance measurement x 0101resistance measurement x 0001 continuity check x 0111 diode measurement x 0100 temperature( H ) ps. x means ?don?t care? the other combinations of fc1, fc2, fc3, a nd fc4 are for adp modes. in adp modes , if fc5 is low, the minus sign on the lcd panel will not be displayed. and if key pin is floating, the buzzer beeps when the input signal is overflow. the adp mode function is summarized below. fc1 fc2 fc3 fc4 mode 1110 adp0 1100 adp1 1000 adp2 1010 adp3 note: temperature measurement mode takes input signal from adp pin. in temperature measurement mode, vbar pin is used to control the right mo st digit point on the lcd panel. when vbar is low, this digit point is displayed. 3. push function 3.1 hold hold mode makes the meter stop updating the lc d panel. this mode can be nested in most of the special modes. enabling hol d function in automatic mode makes the meter switch to manual mode, but the full scale range remains the same. hold function can be cancelled by changing the measurem ent mode, pressing range, or push hold again.
03/01/06 10 ES51981 3 1/2 auto dmm 3.2 range range pin switches to and from automatic and manual mode, and while in manual mode, changes the full scale range. the fo llowing figure shows the state transition. automatic mode manual mode 1 push < 1 sec 1 push > 1 sec 1 p ush < 1 sec range up measurement mode auto manual control range initial range v(dc/ac) vr2 ? vr5 vri vri + 1, vr5 vr1 200.0mv ? 2000v 2.000v a(dc/ac) r1 ? r2 r1 r2, r2 r1 200.0a - 2000a 200.0a ma (ac/dc) r1 r2 r1 r2 r2 r1 20.00ma ? 200.0ma 20.00ma auto a(dc/ac) r1 ? r2 r1 r2, r2 r1 2.000a ? 20.00a 2.000a a(dc/ac) fixed fixed 20.00a 20.00a ? or1- or6 ori ori + 1, or6 or1 200.0 ? ? 20.00m ? 200.0 ? continuity fixed fixed 200.0 ? 200.0 ? diode fixed fixed 2.000v 2.000v note: pushing range resets all existing special modes. 3.3 key see section ?measurement mode switchi ng? for the function of this pin. 4. serial data output the serial data sent to sdo pin twice ev ery a/d conversion cycle. the data format complies with jis 7bits transmission code with a baud rate of 19230. the host can use rs232 interface to read the data. a single data packet includes a st art bit (always 0), 7 data bits, an odd parity check bit, and a stop bi t (always 1). the high and low voltage levels correspond to dgnd and v- respectivel y. sdo remains at 1 (high) when it is inactive. hence the start bit (0) could be used as the triggering signal to begin the reading process. the followi ng figure shows the data form at of a single packet. the
03/01/06 11 ES51981 3 1/2 auto dmm lsb is sent first and the msb is sent last. single package 0 p 1 p 0v -3v lsb msb d0 ~d6 one data block consists of 11 packets, or 110 bits. the following figure shows the format of a data block. the range packet in dicates the full scale range of the meter. digit 3 through digit 0 are ju st the digits on the lcd panel. the function packet indicates the measurement mode of the mete r. status, option 1 and option 2 give the status of the meter. cr and lf are delimiters used to separate the blocks. all package 0 p 1 status digit2 digit3 function range option1 cr lf digit0 digit1 0 p 1 0 p 1 0 p 1 0 p 1 0 p 1 0 p 1 0 p 1 0 p 1 0 p 1 0 p 1 option2 the meter always outputs the current input value to the serial port in spite of hold mode. each block is repeated twice in one conversion cycle. the de tailed data format of each packet is listed below.
03/01/06 12 ES51981 3 1/2 auto dmm 4.1 functuon this packet indicates the measurement mode of the meter. the following table summarizes the transmitted code for each mode. note that the encoding of this packet is different from the encoding of fc1-fc4 switch. code measurement mode 0111011 voltage 0111101 a current 0111111 ma current 0110000 auto a current 0111001 manual a current 0110011 0110101 continuity 0110001 diode 0110100 1*temperature 0111110 adp0 0111100 adp1 0111000 adp2 0111010 adp3 note: 1*.the judge bit in the status packet determines whether the unit is celcius or fahrenheit. 4.2 range this packet indicates the full scale range of the meter. when the meter operates in continuity mode, diode mode, or current (a) mode, this packet is always 0110000 since the full scale range in these modes are fixe d. the following table lists the code for each range in each measurement mode. code v ma a auto a 0110000 2.000v 20.00ma 200.0a 2.000 a 200.0 ? 0110001 20.00v 200.0ma 2000a 20.00 a 2.000k ? 0110010 200.0v 20.00k ? 0110011 2000v 200.0k ? 0110100 200.0mv 2.000m ? 0110101 20.00m ? 0110110 4.3 digit 3 ? digit 0 digit 3 is the most significant digit on the lcd panel, and digit 0 is the least significant digit. when the lcd panel shows ol, the serial port outputs 2000.
03/01/06 13 ES51981 3 1/2 auto dmm digit code 0 0110000 1 0110001 2 0110010 3 0110011 4 0110100 5 0110101 6 0110110 7 0110111 8 0111000 9 0111001 because the cycle time of measurement for continuity/diode mode is only 50ms, the least significant digit may not be accurate. 4.4 status the format of this shown below. the judge field is meaningful only when the function packet indicates temperature mode. in temp erature mode, judge is 1 if the unit is and is 0 of the unit is H . sign field indicates whet her the minus sign on the lcd panel is on or off. batt field is one of ba ttery low condition is tr ue. ol indicates input overflow. 0 1 1 judge sign batt ol bit 6 bit 5 bit 4 bit 3 bit 2 bit1 bit 0 4.5 option 1 this packet is not used. 011hold000 bit 6 bit 5 bit 4 bit 3 bit 2 bit1 bit 0 if hold field is 1, hold function is active. hold function will not influence digital 3~0 which is related to current measured value. 4.6 option 2 this packet contains information on the ope ration mode of the meter. the format is shown below. the dc field indicates that the meter operates in dc measurement mode, either voltage or current. the ac field indicates that the meter operates in ac measurement mode, either voltage or current. the auto field is set to one if the meter operates in automatic mode, and is set to ze ro when the meter operates in manual mode. 011dcacauto0 bit 6 bit 5 bit 4 bit 3 bit 2 bit1 bit 0
03/01/06 14 ES51981 3 1/2 auto dmm 4.7 cr carrage return. the transmitted code is 0001101. 4.8 lf line feed. the transmitted code is 0001010. 5. miscellaneous the conditions which the meter turns on the buzzer include: (1) changing measurement mode generates one beep. (2) pressing any of the push junctions genera tes one beep, if the function is valid. (3) power on and re-power on generate one beep. (4) input overflow in voltage and current mode generates one beep every 0.3 seconds (or 3.33 beeps per second.) (5) continuity(diode) check generates a continuous 2khz beep whenever the measurement is less then 25 ? (0.25v) (6) auto power off generates a 2khz beep which lasts for 1.5 seconds. the following figures shows the output waveform from the buzout pin. 0.5 ms (a) continuous 2khz beep 0.3 sec 0.15 sec (b) 3.33 beep/sec
03/01/06 15 ES51981 3 1/2 auto dmm 5.1 lcd panel seg01 seg02 seg03 seg04 seg05 seg06 seg07 seg08 bp1 batt dc auto manu a3 b3 hold a2 bp2acf4a4b4f3g3f2b2 bp3 apo g4 c4 e3 c3 e2 g2 bp4 rs232 e4 d4 p3 d3 p2 d2 c2 seg09 seg10 seg11 seg12 seg13 seg14 seg15 seg16 v a m2 u2 n f1 a1 b1 m u1 H e1 g1 c1 hz m1 p1 d1 k ? f 2 m2 v a batt dc ac apo rs232 auto manu hold H n 1 m1 f m k ? hz 1
03/01/06 16 ES51981 3 1/2 auto dmm 5.2 lcd backplane waveform 5.3 lcd display on condition lcd annunciator condition v in voltage measurement mode, and diode measurement mode. a in current measurement mode. ? in resistance measurement mode, and continuity mode. f in capacitance measurement mode. in continuity check mode. in diode mode. hz in frequency mode. dc in dc voltage or dc current mode. ac in ac voltage or ac current mode. auto when automatic full scale range selection is enabled. manu in manual mode. hold when hold function is enabled. m1 in capacitor measurement mode and the fu ll scale range is in the order of mf. u1 in capacitor measurement mode and the full scale range is in the order of uf. n in capacitor measurement mode and the fu ll scale range is in the order of nf. m2 in voltage or current measurement mode and the full scale range is in the order of 10 -3 . u2 in current measurement mode and the fu ll scale range id in the order of ua. m in resistance measurement mode and the full scale range is in the order of m ? k in resistance measurement mode and the full scale range is in the order of k ? in temperature measurement mode and when the unit is H in temperature measurement mode and when the unit is H apo when auto power off function is enabled. - in voltage or current measurement mode and when the input is negative. v- +3.1 v- +3.1 v- +3.1 v- +3.1 v- +3.1 v- v- v- v- v-
03/01/06 17 ES51981 3 1/2 auto dmm 5.4 operating timing ES51981 incorporates a dual slope adc with four phases: zi, az, int and dint. the timing of each phase is listed below. * voltage /ohm/adp measurement: phase time zi 100ms az 100ms int 100ms dint 200ms ps . in the voltage and ohm measurement with auto mode, if the range is changed, the internal clock rate will in crease ten times and the new measurement cycle becomes 1/10 times of the original cycle until the range is stable. * current mode phase time zi 100ms az 100ms int 100ms dint 100ms * continuity/diode measurement phase time zi 10ms az 10ms int 10ms dint 20ms
03/01/06 18 ES51981 3 1/2 auto dmm 6.test circuit 100 1.5k ptc z1 6v ovh 2.resistor test ovsg or1 vr5 vr4 vr3 vr2 100 1k 10k 101k 1.11m ovx sgnd agnd z 2 6. low battery 680k 270k ba tt lbat9 v - a gn d 0.1u 0v 9v d1 15k ovsg or1 vr5 vr4 vr3 vr2 v r 1 100 1k 1 0 k 101 k 10m ado adi acvl acvh v r 88m d2 0.1u 0.47u 10k 5k 15k 1.0u 1.0u 1.11m -1 00mv te s t 5 voltage input agnd 1. voltage test 4.current test 100k 100k 450 45 4.5 0.45 0.005 ma m a ua u a ua ma ivsl ivsh agnd a sgnd 0.045 20a 2a - 100mv adp 100k va - va + 5.adp test sgnd agnd adpin+ adpin- 100 1.5k ptc z1 6v ovsg 10m 1.11m ovh vr1 vr2 3 . diode test agnd z2
03/01/06 19 ES51981 3 1/2 auto dmm 7.application circuit nc v+ v+ nc cl+ cl - cil cazl bufl ivsh(10) ivsl ovx ovh ovsg nc or1 vr5 vr4 vr3 vr2(20) test5 acvl acvh nc adi nc ado nc vrh vr(30) va - adp sgnd vr1 n c vbar n c nc ( 40 ) nc- nc+ sleep nc n c rs232 bklit seg17 seg16 seg15 (50)seg14 va + hold range key fc5 fc4 fc3 fc2 fc1 n c c+ c- nc sdo lbat9 v- v- dgnd agnd agnd slacdc v- seg13 nc seg12 seg11 seg10 seg09 seg08 seg07 seg06 seg05 seg04 seg03 seg02 seg01 bp4 bp3 bp2 bp1 annunc nc buzin buzout nc osc2 osc1 nc xtal nc bkout nc 1 00 1k 1 0 k 1 0 1k 1.11m 110pf 1.5k ptc zener 6v 1 00 1 00 k 450 45 4.5 0.45 0.045 a sgnd ua ua ma ma 1 00 k 1 00 k 100k 0. 4 7u 0. 22 u 0. 1 u 88m 15k 15k 0.1u 0.47u 1u 1u d1 d2 10k 5k 91k 20k 1u + 100k 10m - 3v 4mhz -3v lcd display -3v 0. 1 u 3v + + 1 0u 0. 1 u 7.5v 5.6v zi 0. 1 u 4 .7u c r 0.005 6a 60a ua ma -3v
03/01/06 20 ES51981 3 1/2 auto dmm package 1 100 pin qfp package w l bc a d a b d 2 dimension paramenters milimeter mill symbol min. typ. max. min. typ. max. w 19.90 20.00 20.10 783.5 787.4 791.3 l 13.90 14.00 14.10 547.2 551.2 551.2 a 0.425 16.7 b 0.20 0.30 0.40 7.9 11.8 11.8 c 0.65 25.6 d 1.05 1.20 1.35 41.3 47.2 47.2 a 2.57 2.72 2.87 101.2 107.1 107.1 d 2.50 98.4 0 o 10 o

▲Up To Search▲

Price & Availability of ES51981

	To Download ES51981 Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .