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| v 1 . 5 1 201 5/ 1 2 / 1 1 es 2 18 2 000 counts manual dmm features ? 2,000 counts manual type dmm with lcd display ? 100l lqfp packa ge ? 3v dc power supply ? fast adc conversion rate : 4 times/s for v/r mode s ? manual type measurement voltage measurement : 200mv / 2 v /20v/200v/ 1000v current measurement : 20.00u/ 200.0u/2000u/20.00m/200.0m/2 0a resistance measurement : 200 /2k/20k/200k/2m/ 20m /200m capacitance measurement : 2n/20n/200n/2u/20u/200u/2m/20mf not contact ac electric field detection diode voltage measurement continuity check ? auto frequency measurement mode 200.0hz ~ 20.00mhz auto range ? hazardous ac/dc voltage (hv) indication ? 4 adp modes for extension application ? temperature mode with internal scale translation circuit from 0 c to 0 f (1 o c resolution) ? k - type thermocouple reference table compensation ( - 200 ~ 1350 o c range) ? push functions : max/min key function (ac/dc or o c/ o f swap) data hold & backlight function ? band - gap reference voltage output ? current mode overflow selection ? voltage mode overflow selection ( dc / ac : 1010v, dc / ac : 610v ) ? lcd segment check when power on ? auto power off ( 30min idle time ) ? sleep state indicative signal outpu t ? re - power on ? on - chip buzzer driver ? low battery detection ? description ES218 is an integrated analog - to - digital converter with 2,000- coun t lcd, manual type dmm ic which is operated 3v dc power supply. automatic range selection is provided for frequency mea surement only. it could support ac/dc voltage measurement, resistance measurement, capacitance measurement, and ac/dc current measureme nt . expensive and bulky mechanical range switches are not required. other features include data holding, maximum and mini mum value holding, diode measurement, temperature measurement, continuity checking, low battery detection, auto power off, re - power on, backlight driver and buzzer driver . application ? manual type d igital multimeter ? manual type d igital clamp meter
v 1 . 5 2 201 5/ 1 2 / 1 1 es 2 18 2 000 counts manual dmm pin assignment ? 100 l l qfp package nc 1 nc 2 nc 3 nc 97 a dp 99 ci nt 4 caz 5 raz 6 c re f p 7 vr 10 o hmc1 14 o r1 15 v r5 16 v r4 17 v r3 18 v r2 19 o vsg 20 v r1 21 mvin 22 c re f n 8 v rh 9 o vh 24 sgn d 26 a do 30 test5 31 f re q 37 alarm 38 bkout 39 disdgbp 41 v st 42 sleep 43 a se l 44 bp4 47 bp2 49 bp1 50 annunc 52 cese l 40 acvl 27 bp3 48 acvh 28 a di 29 nc 36 buz in 46 o vx 23 se g1 4 54 se g1 3 55 se g1 2 56 se g1 1 57 se g1 0 58 se g0 9 59 se g0 8 60 se g0 7 61 h ol d 70 se g0 6 62 se g0 5 63 se g0 4 64 se g0 3 65 se g0 2 66 se g0 1 67 m mx 68 key 69 s20ua 71 o sc1 72 o sc2 78 f c4 82 f c3 83 f c5 81 buz o ut 79 f c2 84 f c1 85 sla cdc 86 cp 87 cn 88 lbat9 89 v- 90 v- 91 v+ 92 v+ 93 dgnd 94 agnd 95 agnd 96 vr_adp 11 o hmc2 13 o hmc3 12 nc 25 cap 32 can 33 r10 k 34 r1k 35 diov 45 nc 51 se g1 5 53 nc 73 nc 74 nc 75 nc 76 nc 77 f c6 80 nc 98 ivs 1 00 ES218 v 1 . 5 3 201 5/ 1 2 / 1 1 es 2 18 2 000 counts manual dmm pin description pin no symbol type description 1 - 3 nc - not connected. 4 ci nt o high - resolution integr ator output. connect to integra te capacitor. ( metalized polypropylene film capacitor type is recomme nded) 5 caz o high - resolution auto - zero capacitor connection. 6 raz o buffer output pin in az and zi phase. 7 crefp o posi tive connection for reference capacitor of a/d. 8 crefn o nega tive connection for reference capacitor of a/d. 9 vrh o output of b and - gap voltage reference. typically ? 1.23v. 10 vr i reference input voltage connection. typically ? 400mv. 11 vr_ adp i reference input voltage connection. typically ? 400 mv. 12 ohmc3 o filter capacitor connection for resistance mode. 13 ohmc2 o filter capacitor connection for resistance mode. 14 ohmc1 o filter capacitor connection for resistance mode. 15 or1 o reference resistor connection for 200.0 range 16 vr5 o voltage measurement 10000 attenuator(1000v) 17 vr4 o voltage measurement 1000 atten uator( 200.0 v) 18 vr3 o voltage measurement 100 attenuator( 20.00 v) 19 vr2 o voltage measurement 10 attenuator( 2.000 v) 20 ovsg o sense low voltage for resistance/voltage measurement 21 vr1 i voltage m easurement input. connect to a n accurate 10m resist or. 22 mvin i measurement input in 200.0 mv mode. 23 ovx i sense input for resistance / capacitance measurement. 24 ovh o output connection for resistance measurement. 25 nc - not connected. 26 sgnd i signal ground input . 27 acvl i rectified signal lo w input in acv/aca mode. connect to negative output of external ac to dc converter. 28 acvh i rectified signal high input in acv/aca mode. connect to positive output of external ac to dc converter. 29 adi i negative input of internal ac to dc op amp. 30 ado o output of internal ac to dc op amp. 31 test5 o buffer output of ovsg. 32 cap o positive auto - zero capacitor connection for capacitor measurement. 33 can o negative auto - zero capacitor connection for capacitor measurement. 34 r10k o connect to a precise 10 k resister for capacitor measurement. 35 r1k o connect to a precise 1k resister for capacitor measurement. 36 nc - no connection 37 freq i frequency counter input, offset v - /2 internally by the chip. 38 alarm o hv signal detection in voltage mode and ef mode indication output . v 1 . 5 4 201 5/ 1 2 / 1 1 es 2 18 2 000 counts manual dmm pin description ( c ontinued ) pin no symbol type description 39 bkout o push hold key lager than 2 sec. to enable the back light function . t his pin will change from v - to v+ and lasts for 5 minutes. . o nce press hold key lager than 1 sec. again , this pin will c hange level back to v - . 40 cesel i voltage ol selection feature control pin. (1010v/610v) 41 dis dgbp i control warning buzzer output at hv mode. pulled to low and buzzer is disabled. 42 vst i in a or ma modes, it is used to control the ?? or ?m? sign. set to v - to enable clamp current mode. the initial voltage range will be set to 200.0v range also. 43 sleep o sleep mode indicator, asserts low in sleep mode. 44 asel i current mode ol indication for 2000a (vst = v - ) or 20a (vst = floating) ranges 45 diov i pulled to v - to set the 2.8v ol level in diode mode measurement 46 buzin i pulled to v - to enable the buzzer output (buzout) always. 47- 50 bp4 - 1 o lcd backplane 4 - lcd backplane1 51 nc - not connected 52 ann unc o square wave output at the backplane frequency, synchronized to bp1. annunc can be used to control display annunciator. connect a lcd segment to annunc to turn it on; connect an lcd segment to its backplane to turn it off. 53- 67 seg 15 - seg01 o lcd s egment line 01 ? 14. 68 mmx i pulse to v - to enable max/min function. 69 key i pulse to v - to change mode. 70 hold i pulse to v - less than 1 second. to enable hold function. 71 s20ua i pulled to v - to change 200.0ua to 20.00ua display 72 osc 1 - conne ct to 4mhz crystal oscillator 73- 77 nc - not connected 78 osc2 connect to 4mhz crystal oscillator 79 b u zout o outputs a 2khz audio frequency signal for driving piezoelectric buzzer 80 fc 6 i switch 6 for function selection. 81 fc5 i switch 5 for funct ion selection. 82 fc4 i switch 4 for function selection. 83 fc3 i switch 3 for function selection. 84 fc2 i switch 2 for function selection. 85 fc1 i switch 1 for function selection. 86 slacdc i select initial dc/ac state. 87 c p o posi tive capacitor connection for on - chip dc - dc converter. 88 c n o nega tive capacitor connection for on - chip dc - dc converter. v 1 . 5 5 201 5/ 1 2 / 1 1 es 2 18 2 000 counts manual dmm pin description ( c ontinued ) pin no symbol type description 89 l b at 9 i low battery configuration. if 3v battery is used, connect it to dgnd. th e default low - battery threshold voltage is ? 2.3v. if 9v battery is used, the low battery enunciator is displayed when the voltage of this pin is less than vrh ( - 1.2v) 90 v - p negative supply voltage. 91 v - p negative supply voltage. 92 v+ o /p output of on- chip dc - dc converter. 93 v+ o /p output of on - chip dc - dc converter. 94 dgnd p / g digital ground. 95 agnd p / g analog ground. 96 agnd p / g analog ground. 97- 98 nc - not connected 9 9 adp i measurement input in adp /temp mode. 100 ivs i m easurement input in ua/ma/a current mode. v 1 . 5 6 201 5/ 1 2 / 1 1 es 2 18 2 000 counts manual dmm absolute maximum ratings characteristic rating supply voltage (v - to agnd) - 4v analog input voltage v - - 0.6 to v+ +0.6 v+ v+ (agnd/dgnd+0.5v) agnd/dgnd agnd/dgnd (v - - 0.5v) digital input v - - 0.6 to dgnd +0.6 power dissipation. flat package 500mw operating temperature - 2 0 to 70 storage temperature - 4 5 to 125 electrical characteristics t a =23 o c parameter symbol test condition min. typ. max units power supply v - 2. 4 - 3. 0 3. 3 v operating supply current in dcv mode i dd normal operation ? 1. 8 2. 2 ma i ss in sleep mode ? ? 10 a voltage roll - over error rev 10m input resistor ? ? 0.1 %f.s 1 voltage nonlinearity nlv best case straight line cil=mpr capacitor ? ? 0.1 %f.s 1 zero input reading 10m input resistor - 000 000 +000 counts band - gap reference voltage v ref 100k resistor between vrh and agnd - 1.3 0 - 1.2 3 - 1.1 6 v open circuit voltage for 4 0 0 measurement v - =3v ? - 3. 0 ? v open circuit voltage for other measurement - 1.19 - 1.08 - 0.97 v peak to peak backplane voltage v lcd - 3.5v v - - 2.2v 3.0 3.1 3.2 v low battery flag voltage v - to agnd ( l b at 9 connected to gnd) - 2.4 - 2.3 - 2.2 v internal pull - high to 0v current between v - pin and hold, key, fc1 - fc 6 , m mx ? 1.2 ? a ac frequency response at 2.000 v range 1% ? 40- 400 ? hz 5% (no compensated) ? 400- 2000 ? capacitance measurement accuracy 2 nf ? 2 00u f - 2. 5 ? 2. 5 % - 3 ? 3 counts capacitance measurement accuracy 2m f ? 20mf - 3 . 5 ? 3 . 5 % 5 ? 5 counts reference voltage temperature coefficient tc rf - 2 0 v 1 . 5 8 201 5/ 1 2 / 1 1 es 2 18 2 000 counts manual dmm 1.2. current m easurement f or m ulti - meter ES218 has 5 manual current measurement modes for multi - meter. the following table summarizes the f ull - s cale range of each mode. when ES218 operates in the current measurement modes for multi - meter, i t takes high input from pin iv s (pin 100), low input from pin sgnd and reference voltage from vr (pin 10) . mode fc6 fc1~4 full scale input terminal 200.0ua 2 0 0,0,0,1 20.0 0 mv ivs v.s. sgnd 2000ua 1 0,0,0,1 200.0 m v ivs v.s. sgnd 20.00ma 0 1,0,0,0 20.00mv ivs v.s. sgnd 200.0ma 1 1 ,0,0,0 200.0mv ivs v.s. sgnd 2 0.00 a 1 1 0,0,0,0 200.0mv ivs v.s. sgnd note: 1. connect asel (pin 44) to v - will set maximum readings of input for 20.00a mode to 10.00a . 2. pulled s20ua (pin71) to v - to change 200.0ua to 20.00ua display. 1.3. current m easurement f or c lamp - meter ES218 supports 4 manual current measurement modes for clamp meter application . the following table summarizes the full - scale range of each mode. i t takes high input from ivs pin , low input from sgnd and reference voltage from vr. mode vst 1 fc6 fc1~4 full scale input term inal 200.0a v - 0 0,0,0,1 20.00mv ivs v.s. sgnd 2000a 2 1 0,0,0,1 200.0 m v ivs v.s. sgnd 20.00a 0 1,0,0,0 20.00mv ivs v.s. sgnd 200.0a 1 1,0,0,0 200.0mv ivs vs. sgnd note: 1. connect vst to v - will disable the ? 2 ? / ?m 2 ? symbol on lcd panel . 2. connect a sel to v - will set maximum readings of input for 2000a mode s to 1000a . v 1 . 5 9 201 5/ 1 2 / 1 1 es 2 18 2 000 counts manual dmm 1.4. resistance measurement a re - configurable divider provides a manual full - scale range in resistance measurement mode. the following table summarizes the f ull - s cale range s and the reference r esistors in each configuration. configuration full scale range relative resistor equivalent value or1 200.0 or1 100 or2 2.000 k vr5 1k or3 20.00 k vr4 || vr1 10k or4 200.0 k vr3 || vr1 100k or5 2.000 m vr2 || vr1 1m or6 20.00 m vr1 10m or7 200.0m ? vr1 100m ? 1.5. c apacitance measurement the following table summarizes the eight ranges of capacita nce measurement mode. configuration 1 full scale range relative resistor measurement period c1 3 2 . 0 00nf ratio to c2 0. 25 sec c2 2 20 .00nf cal 0. 25 sec c3 20 0.0nf ratio to c2 0.9 sec c4 2 . 0 00uf ratio to c2 0.9 sec c5 20 .00uf i nternal matching 0.25 sec c6 20 0.0uf i nternal matching 1.25 sec (max) c7 2.0 00mf i nternal matching 2.5 sec (max) c8 20.00mf i nternal matching 12.5 sec(max) note: 1. in order to obtain an accurate reading, a capacitor must be discharged before measurement begins. the chip has a built - in discharge mode to automatically discharge the capacitor. in discharge mode, the main - display shows dis.c . discharging through the chip is quite slow. we recommend users to discharge the capacitor with some other apparatus. 2. the c2 range is calibrated in calibration scheme. 3. the c1 range residual offset could be compensated by the small capacitors near to ovh pin. v 1 . 5 10 201 5/ 1 2 / 1 1 es 2 18 2 000 counts manual dmm 1.6. continuity check continuity check shares the same configuration with 200.0 manual resistance measurement mode and has buzzer output to indicate continuity. the buzzer generates 2khz beep and alarm (pin 38 ) drive high output (v+ level) whenever the reading is less than 30. the ES218 built in a high speed short detection circuit and the detection period could be less than 10ms . 1.7. diode measurement diode measurement mode shares the same configuration with 2.000 v manual voltage measurement mode and has buzzer output to indicate continuity. the buzzer generates a 2khz sound and ala rm (pin 38 ) drive high output (v+ level) whenever the reading is less than 30mv. the source output voltage is the same as v+ terminal. if the test circuit is open or the voltage drop between the two ports of the diode under test is larger than 2v or 2.8 v ( depends on diov pin level) , the lcd panel will show ?ol?. diov dgnd /floating v - ol 2.000v 2.8 0 0v 1.8. frequency c ounter the time base of the frequency counter is derived from an external crystal oscillator by t counter = 2,000,000 f osc w here f osc is t he frequency of the crystal oscillator. thus, the counter has a 1 - second time base when a 4mhz oscillator is used. the frequency counter can select the proper range automatically or manually. auto - range operation extends over six decades, from 200.0 hz to 20.00 mhz. the following table summarizes the full - scale range of the frequency counter. range full scale fr 1 200.0 hz fr 2 2.000 khz fr 3 20.00 khz fr 4 200.0 khz fr 5 2.000 mhz fr 6 20.00 mhz *if input frequency is less than 1 .0hz, ES218 will show 0 . 0hz v 1 . 5 11 201 5/ 1 2 / 1 1 es 2 18 2 000 counts manual dmm 1.9. el ectrical field detection mode (ncv) ES218 supports a non - contact ac voltage measurement, which is called electric field measurement also. the adc input is configured from adp pin vs. sgnd . when no or less electric field is detected, the lcd display shows ?ef?. if the electric field is detected, the strength will be showed on the lcd display by ? - ? not digits type. level 1(equivalent to 12.5% full scale of adc) is ? - ? and the level 4(equivalent to 100% full scale of adc) is ? ---- ?. additional beeper ( buzout pin) and led alarm ( alarm pin) will be output from ES218 . the frequency of buzzer and led alarm depends on the strength of electric field also. the faster beeper means the stronger electric field (ac voltage) is sensed. the input voltage is taken from adp pin( 99 ) and the reference voltage is taken from vr_adp (pin11 ) mode fc1~ 4 slacdc / fc6 full scale input terminal ef 0 ,1,1,0 1 ,1 - adp v.s. sgnd a dp 100 m ef test circuit efin+ sgnd agnd efin - 100k v radp - 400mv v 1 . 5 12 201 5/ 1 2 / 1 1 es 2 18 2 000 counts manual dmm 1.10. temperature m easurement mode temperature measurement mode takes input signal fr om adp pin . the ES218 ha s oc to of scale translation circuit and standard k - type thermocouple reference table is built - in . external cold - junction compensation circuit is still necessary. mode fc1~ 4 slacdc / fc6 range input terminal o c 0,1,0,0 1 ,1 - 200 o c ~ 13 50 oc adp v.s. sgnd o f 0,1,0,0 0,1 - 328 of ~ 2462 of temperature mode circuit example: u1 lm385_1.25v r7 2 . 2k v + q3 2n3904 r4 15k r2 200k r1 1 . 8k v r1 200 r5 10m r3 270 dip 2n3904 close to v/r/temp 1 com s2 sw- sp dt ES218 agnd sgnd adp temp v / r 1 v / r / temp s1 sw- sp dt temp v / r r6 10k r8 ptc 2.2k s gnd s3 temp q2 2n2222 q1 2n2222 r9 1m r10 15k v 1 . 5 13 201 5/ 1 2 / 1 1 es 2 18 2 000 counts manual dmm 1.11. adp ES218 provides 4 manual range adp measurement modes for user define . the adp pin is auxiliary input terminal for adc of ES218 . the full sca le for adp mode is 200.0 mv. if fc5=0, the minus sign will not be shown on lcd segment. mode fc1~ 4 slacdc / fc6 full scale input terminal a dp0 1,0,0,1 1 ,1 2000 adp v.s. sgnd adp1 0,0,1,1 1 ,1 200.0 adp v.s. sgnd adp2 0,0,1,0 1 ,1 20.00 adp v.s. sgnd adp 3 0,1,0,1 1 ,1 2.000 adp v.s. sgnd note: if fc5 is set to v - , the minus sign will be disable d . 1.12. auto p ower o ff (apo) ES218 has a default auto power off function. if the meter is idle for more than the given idle time duration , the chip automatically turn s the power off. the idle time to trigger the auto power off function is set to 30 minutes. when apo is occurred , the state of the meter is reserved . the apo symbol on the lcd panel indicates whether the auto power off is enabled or not. in some cases, use r might want to disable auto power off. there are two ways to disable this feature as following: 1. power on the meter when any of the push functions, except for hold, is pressed down. note: powering on the meter while pressing hold and lasts 2 seconds turns on all lcd segments until hold is pressed again. 1.13. sleep the meter enters sleep mode after auto power off. the sleep pin (pin 43 ) asserts low (v - ) in the sleep mode, and asserts high (v+, not 0v) after re - power on. 1.14. re - p ower o n after auto power - off, pus hing any of the push 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 functions, the chip restores the saved state and enters hold mode. the lcd displays the saved value. v 1 . 5 14 201 5/ 1 2 / 1 1 es 2 18 2 000 counts manual dmm 1.15. hazardous voltage indication the ES218 could provide the ac/dc hazardous voltage indication for voltage/resistor/ diode modes. of course, the indication could support lcd symbol /led /buzzer dr iving simultaneously . especially ES218 could detect the ac voltage in dcv mode and detects the dc voltage in acv mode. it means if not proper ac or dc voltage signal exists on the dut when dcv or acv measurement mode is set, the hv indication will be still active. hv indication criterion function / range dc voltage (typ.) ac voltage (typ.) ac mv > + 3v ol ac 4 v > + 20v ol ac 4 0v ? 1000v > + 100v > 30v rms dc mv ol > 3vrms (40 - 1khz) dc 4 v ol > 20vrms (40 - 1khz) dc 4 0v - 1000v > + 30v > 90vrms (40 - 1khz) fr eq. mode > + 4 0v > 3 0vrms (40 - 1khz) res/diode modes > + 10v > 10vrms (40 - 1khz) note: if ac+dc signal is applied, the voltage criterion will be changed. 1.16. l ow b attery v oltage d etection v 1 . 5 15 201 5/ 1 2 / 1 1 es 2 18 2 000 counts manual dmm es2 18 provides a voltage detection input (pin 89 : l bat 9 ) for non- 3v b attery application. when lbat9 is less than vrh terminal voltage , the lcd segment of low battery will appear . for 3v battery application, pull lbat9 to dgnd directly and the same detection will be made when v - is less than 2.3v. when the low battery status lasts for 10 seconds, the lcd segment of low battery will be blinking. when the symbol is blinking for 20 seconds, the operation of meter will be inhibited and lcd panel will show ? lo.bt?. in this case, it is suggested to replace a new battery immediately. after ?lo.bt? appears and lasts for 60 seconds, es2 18 will enter to auto power off mode. 2. measurement mode switching low battery test (9v) 680k 270k bat ter y lbat9 v - agnd 0.1u 0v 9v v 1 . 5 16 201 5/ 1 2 / 1 1 es 2 18 2 000 counts manual dmm measurement mode depends on the logic level of slacdc, fc1, fc2, fc3, fc4, fc5 , fc6 and key s election . when fc5 /fc6 are high (kept floating) , the measurement mode list is shown below : slacdc fc1 fc2 fc3 fc4 mode key selection 0 1 0 1 1 dc 200.0v dcv ? acv 0 1 1 0 1 dc 20.00v dcv ? acv 0 1 1 1 1 dc 200.0mv dc m v ? ac m v 0 1 1 1 0 dc 2.000v dcv ? acv 0 0 0 0 0 dc 20.00a 2 dca ? aca 0 1 1 0 0 20 .00 m ? ---- 0 1 0 0 0 dc 200.0ma 23 dc m a ? ac m a 0 1 0 1 0 2.000 m ? ---- 0 1 0 0 1 2 0 0 . 0 k? ---- 0 0 0 1 1 200. 0 ? ---- 0 0 0 0 1 dc 2000 ua 23 dc u a ? ac u a 0 0 1 1 1 dc 1000v dcv ? acv 0 0 0 1 0 freque ncy mode (auto) ---- 0 0 1 1 0 2 . 000 k ? ---- 0 0 1 0 0 1350 ? H 0 0 1 0 1 20.00 k ? ---- 1 1 0 1 1 ac 200.0v a cv ? d cv 1 1 1 0 1 ac 20.00v a c v ? d c v 1 1 1 1 1 ac 200.0mv a c m v ? d c m v 1 1 1 1 0 ac 2.000v a c v ? d c v 1 0 0 0 0 ac 20.00a 2 a ca ? d ca 1 1 1 0 0 continuity mode ---- 1 1 0 0 0 ac 200.0ma 23 a c m a ? d c m a 1 1 0 1 0 diode mode ---- 1 1 0 0 1 adp0 ( + 2000) 1 ---- 1 0 0 1 1 adp1 ( + 200.0) 1 ---- 1 0 0 0 1 ac 2000ua 23 a c u a ? d c u a 1 0 1 1 1 ac 1000v a c v ? d c v 1 0 0 1 0 adp2 ( + 20.00) 1 ---- 1 0 1 1 0 ef mode ---- 1 0 1 0 0 2462 y y? 1 0 1 0 1 adp3 ( + 2.000) 1 ---- note: 1. when fc5 is high, the adp0, adp1, adp2 and adp3 modes can display minus sign. 2. t hese modes could be designed for multimeter current modes, please refer to section 1. 2 . 3. t hese modes could be designed for clampmeter current modes, please refer to section 1. 3 . . measurement mode switching (c ontinued ) v 1 . 5 17 201 5/ 1 2 / 1 1 es 2 18 2 000 counts manual dmm measurement mode depends on the logic level of slacdc, fc1, fc2, fc3, fc4, fc5 and key selection . when fc5 is low (pulled to v - ) , the key function is disable d in most modes . the measurement mode list is shown below : (note: fc6 is high) slacdc fc1 fc2 fc3 fc4 mode key selection & remaks 0 1 0 1 1 dc 200.0v ---- 0 1 1 0 1 dc 20.00v ---- 0 1 1 1 1 dc 200.0mv ---- 0 1 1 1 0 dc 2.000v ---- 0 0 0 0 0 dc 20.00a 2 ---- 0 1 1 0 0 20 .00 m ? ---- 0 1 0 0 0 dc 200.0ma 23 ---- 0 1 0 1 0 2.000 m ? ---- 0 1 0 0 1 2 0 0 . 0 k? ---- 0 0 0 1 1 200. 0 ? ---- 0 0 0 0 1 dc 2000 ua 23 ---- 0 0 1 1 1 dc 1000v ---- 0 0 0 1 0 frequency mode (auto) ---- 0 0 1 1 0 2 . 000 k ? ---- 0 0 1 0 0 1350 ---- 0 0 1 0 1 20.00 k ? ---- 1 1 0 1 1 ac 200.0v ---- 1 1 1 0 1 ac 20.00v ---- 1 1 1 1 1 ac 200.0mv ---- 1 1 1 1 0 ac 2.000v ---- 1 0 0 0 0 ac 20.00a 2 ---- 1 1 1 0 0 continuity mode ---- 1 1 0 0 0 ac 200.0ma 23 ---- 1 1 0 1 0 diode mode ---- 1 1 0 0 1 adp0 (2000) 1 ---- 1 0 0 1 1 adp1 (200.0) 1 ---- 1 0 0 0 1 ac 2000ua 23 ---- 1 0 1 1 1 ac 1000v ---- 1 0 0 1 0 adp2 (20.00) 1 ---- 1 0 1 1 0 ef mode ---- 1 0 1 0 0 2462 H ---- 1 0 1 0 1 adp3 (2.000) 1 ---- not e: 1. when fc5 is low, the adp0, adp1, adp2 and adp3 modes can ? t display minus sign. 2. these modes could be designed for multi - meter current modes, please refer to section 1. 2 . 3. these modes could be designed for clamp - meter current modes, please refer to section 1. 3 . measurement mode switching (c ontinued ) v 1 . 5 18 201 5/ 1 2 / 1 1 es 2 18 2 000 counts manual dmm measurement mode depends on the logic level of slacdc, fc1, fc2, fc3, fc4, fc5 and key selection . when fc 6 is low (pulled to v - ) , the capacitance measurement and extra current measurement mode lists are shown below: slacdc fc1 fc2 fc3 fc4 fc5 mode key selection & remaks 0 0 0 1 1 x 2.000 nf ---- 0 0 1 1 0 x 20.00 nf ---- 0 0 1 0 1 x 200.0 nf ---- 0 1 0 0 1 x 2.000 uf ---- 0 1 0 1 0 x 20.00 uf ---- 0 1 1 0 0 x 200.0 uf ---- 0 0 1 0 0 x 2.000 mf ---- 0 0 0 1 0 x 20.00 mf ---- 0 1 1 1 1 x cap (auto) ---- 0 1 1 1 0 x 200.0 m ? ---- 0 1 0 0 0 1 dc 20.00 ma 12 dc m a ? ac m a 0 0 0 0 1 1 dc 200.0 ua 12 dc u a ? ac u a 1 1 0 0 0 1 ac 20.00 ma 12 a c m a ? d c m a 1 0 0 0 1 1 ac 200.0 ua 12 a c u a ? d c u a 0 1 0 0 0 0 dc 20.00 ma 12 ---- 0 0 0 0 1 0 dc 200.0 ua 12 ---- 1 1 0 0 0 0 ac 20.00 ma 12 -- -- 1 0 0 0 1 0 ac 200.0 ua 12 ---- note: 1. these modes could be designed for multi - meter current modes, please refer to section 1.2 . 2. these modes could be designed for clamp - meter current modes, please refer to section 1.3. \ v 1 . 5 19 201 5/ 1 2 / 1 1 es 2 18 2 000 counts manual dmm 3. push function al l the enabled push functions will be reset when the measurement mode is changed when fc1 - fc5 modes are changed . the following table lists the available function versus every measurement mode . no te: p ush hold key and last for 2 s econds will active the back light output driver (bkout). 3.1. hold and bkout output f eature m mx k ey hold /bklit * voltage mode o o o mv mode o o o curren t mode for multimeter o o o current mode for clampmeter o o o resistance o x o continuity o x o diode mode o x o frequency x x o capacitance o x o temperature o o o ef mode x x o adp mode o x o v 1 . 5 20 201 5/ 1 2 / 1 1 es 2 18 2 000 counts manual dmm hold mode makes the meter stop updating the lcd panel. this mode can be nested in most of the special modes. enabling hold function in automatic mo de makes the meter switch to manual mode, but the range remains the same. ES218 provides a backlight output feature. to activate backlight output feature, press down the hold key and last for 2 seconds. the meter will enable output from bkout . 3.2. key see section ?measurement mode switching? for the function of this pin . 3.3. max/min + hold the meter displays the maximum or minimum value of the input in max/min mode. when mmx key is pressed for the first time, the meter displays the maximum value. the meter d isplays the minimum value, when it is pressed again. when mmx key is pressed for the third time, the meter displays current value. the meter returns to normal operation if mmx is pressed and held for longer than one second. pressing hold in max/min mode ma kes the meter stop updating the maximum or the minimum value. 4. miscellaneous original state (automatic/manual) max active max value min active min value max&h active h o ld max value. min&h active h o ld min value. push hold push hold 1 push<1 sec 1 push<1 sec 1 push> 1 sec 1 push>1 sec 1 push<1 sec v 1 . 5 21 201 5/ 1 2 / 1 1 es 2 18 2 000 counts manual dmm the conditions, which the meter turns on the buzzer, include: (1) changing measurement mode generates one beep. (2) pressing any of the push functions generates one beep, if the functi on 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) hazard voltage indication is active generates one beep per second and could be disabled by disdgbp pin. (6) continuity(diode) check generates a continuous 2khz beep whenever the measurement is less then 30(30mv) (7) auto power off generates a 2khz beep which lasts for 1.5 seconds. the following figures show 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 4.1. lcd panel v 1 . 5 22 201 5/ 1 2 / 1 1 es 2 18 2 000 counts manual dmm s01 s02 s03 s04 s05 s06 s07 s08 s09 bp1 auto 4b 3a 3b 2a 2b 1a bp2 apo ac 4a 4g 3f 3g 2f 2g 1f bp3 dange minus 4f 4c 3e 3c 2 e 2c 1e bp4 lbat dc 4e 4d dp3 3d dp2 2d dp1 s10 s11 s12 s13 s14 s15 bp1 1b buzzer hold 2 m n bp2 1g diode max m2 k 1 bp3 1c min v m1 bp4 1d H adp a hz f lcd backplane waveform 4.2. lcd d isplay o n c ondition bp1 bp2 bp3 bp4 v - +3.1 v - v - +3.1 v - v - +3.1 v - v - +3.1 v - v 1 . 5 23 201 5/ 1 2 / 1 1 es 2 18 2 000 counts manual dmm 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. m 1 in capacitor measurement mode and the full scale range is in the order of mf. 1 in capacitor measurement mode and the full scale ran ge is in the order of uf. n in capacitor measurement mode and the full scale range is in the order of nf. in continuity check mode. in diode mode. hz in frequency mode. adp when adp 0 - 3 mode is active . dc in dc voltage or dc current mode. ac in a c voltage or ac current mode. auto when automatic full scale range selection is enabled. (hz or cap auto mode) hold when hold function is enabled. max when max function is enabled. min when min function is enabled. m 2 in voltage or current measurement mode and the full scale range is in the order of 10 -3 . 2 in current measurement mode and the full 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 . ( hv) when the reading is exceeding default hazardous live vo ltage or ol in dcv or acv, or not proper voltage applied on res/cap/diode/hz modes, the hv warning symbol will be display ed . apo when auto power off function is enabled. l b at when battery voltage is too low v 1 . 5 24 201 5/ 1 2 / 1 1 es 2 18 2 000 counts manual dmm 4.3 operating timing ES218 inco rporates a dual slope adc with four phases: zi, az, int and dint. the timing of each phase is listed below. (1) voltage / diode /adp phase high resolution zi 2 0ms az 2 0 ms int 100ms dint 1 10ms (2) current mode for multimeter/auto current mode for clampmete r : phase dc / ac dc lower range dc/ac 999.9a zi 5 0ms 2 0ms 20ms az 25ms 2 0 ms 20ms int 100ms 1000 ms 100ms dint 110 ms 110 ms 260ms (3) continuity / ohm measurement: phase time time (200m) zi 2 0ms 20ms az 20ms 20ms int 25ms 25ms dint 185ms 585ms (4) frequenc y : every conversion takes 1.05 second. (5) temperature measurement : phase time zi 2 0ms az 2 0 ms int 5 00ms dint 210ms note: 1. in the frequency measurement with auto mode, if the range is changed, the internal clock rate will increase ten times and the new measurement cycle becomes 1/10 times of the original cycle until the range is stable. v 1 . 5 25 201 5/ 1 2 / 1 1 es 2 18 2 000 counts manual dmm ? application circuit 1. av g circ uit 1 2 3 4 5 6 a b c d 6 5 4 3 2 1 d c b a title num b e r revision size b date : 11-nov-2015 sh ee t of file: d:\protel 99\protel file\ka055\ka055.ddb drawn by : ES218 ( avg ) demo board circuit v2 jack chang es 21 8 sw9 fc5 sw1 0 fc4 sw7 sl acd c f c4 f c5 slacdc v - sw1 1 fc3 sw1 2 fc2 sw1 3 fc1 f c1 f c2 f c3 sw1 8 maxmin m mx v - sw1 9 key sw2 0 h ol d h ol d key sw8 fc6 f c6 r3 10k r40 15k r41 15k test5 a di acvh acvl + c18 1uf + c19 1uf c6 0.1uf r46 56k r45 56k d6 1n4148 d5 1n4148 v r5 10k c20 10uf 1 1 1 2 sw1 ua sw3 ma ua/ ma ua ma 5 f? 6 f? a r4 99 r18 0 . 99 r19 0 . 01 bz1 bu zz e r v - r1 10k r2 10k b uzout q1 2n3906 d3 bkout r5 100k v - b ko u t r10 100 d4 hv r6 100k v - alarm r11 100 q3 2n3904 q2 2n3904 + c2 10uf + c3 10uf z r2 7 . 5v v + c5 0.1uf c4 0.1uf z r1 5 . 6v sw2 power switch v - ba t- ba t+ metallized polyester capacitor : c11 r8 100k a do sw1 7 ef m o de a dp mvi n q11 2n2222 q10 2n2222 r29 2 . 2k p tc ovx r30 2 . 2k p tc r17 200k ovh r34 10m / 1000v r9 100k q7 2n2222 q6 2n2222 q9 2n2222 q8 2n2222 c21 220pf close to ic c22 0-100pf r43 200 c10 1uf q4 2n3904 q12 2n2222 f req r42 200 v r8 50k r44 220k sw1 4 mvin sw2 3 freq disdgbp buzin v st buzout b ko u t a sel seg12 seg13 seg14 seg08 seg09 seg10 seg11 seg04 seg05 seg06 seg07 seg03 seg02 seg01 bp4 bp3 bp2 bp1 c es e l alarm y1 4 mh z key annunc f c5 h ol d f c2 f c3 f c4 f c1 m mx i vs slacdc a dp v - v + lbat9 c1 470nf c12 220nf 10% c11 220nf 10% c13 220nf 10% v rh c9 1uf c8 33nf r23 99.7 r24 1k r25 10.01 r26 101k r27 1.111m ovsg nc 1 nc 2 nc 3 nc 97 a dp 99 ci nt 4 caz 5 raz 6 c re f p 7 vr 10 o hmc1 14 o r1 15 v r5 16 v r4 17 v r3 18 v r2 19 o vsg 20 v r1 21 mvin 22 c re f n 8 v rh 9 o vh 24 sgn d 26 a do 30 test5 31 f re q 37 alarm 38 bkout 39 disdgbp 41 v st 42 sleep 43 a se l 44 bp4 47 bp2 49 bp1 50 annunc 52 cese l 40 acvl 27 bp3 48 acvh 28 a di 29 nc 36 buz in 46 o vx 23 se g1 4 54 se g1 3 55 se g1 2 56 se g1 1 57 se g1 0 58 se g0 9 59 se g0 8 60 se g0 7 61 h ol d 70 se g0 6 62 se g0 5 63 se g0 4 64 se g0 3 65 se g0 2 66 se g0 1 67 m mx 68 key 69 s20ua 71 o sc1 72 o sc2 78 f c4 82 f c3 83 f c5 81 buz o ut 79 f c2 84 f c1 85 sla cdc 86 cp 87 cn 88 lbat9 89 v- 90 v- 91 v+ 92 v+ 93 dgnd 94 agnd 95 agnd 96 vr_adp 11 o hmc2 13 o hmc3 12 nc 25 cap 32 can 33 r10 k 34 r1k 35 diov 45 nc 51 se g1 5 53 nc 73 nc 74 nc 75 nc 76 nc 77 f c6 80 nc 98 ivs 1 00 u1 ES218 c7 22nf seg15 f c6 c17 470nf 10% diov sleep acvl acvh a do a di test5 sw5 a dp sw6 temperature v r6 2k r39 9 00 r38 9k precision resistors optional vin v r7 200 r22 5 6k r37 6 .8k v r4 1 0k + c16 4.7uf r21 5 6k r36 2 4k v r3 1 0k + c15 4.7uf r20 5 6k r35 2 4k v r2 1 0k + c14 4.7uf v/r/temp com 1 3 1 4 ivs mvi n ovx ovh vin f req r7 100k d2 d1 ef v - bt1 dc 3.0v precision resistors precision resistors 1 7 copper area q13 2n2222 sw2 1 o vx sw2 2 o vh mv m o de r/s/d/c mode fr eque nc y mode sw1 5 temperature mode sw4 t em p _ com sgnd for temperature f o r d mm u2 lm385_1.25v r33 2k v + q14 2n3904 r14 15k r16 200k r15 1 . 8k v r1 100 r32 10m r12 270 dip 2n3904 cl os e t o h1 c t em p _ com r13 15k r31 1m r28 40m ~ 60m sw1 6 temperature mode q5 2n2222 s40ua v 1 . 5 26 201 5/ 1 2 / 1 1 es 2 18 2 000 counts manual dmm ? package information ? 100l l qfp outline drawing dimension parameters |
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