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ES51925 Datasheet(PDF) 3 Page - Cyrustek corporation |
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ES51925 Datasheet(HTML) 3 Page - Cyrustek corporation |
3 / 22 page Ver 2.9 3 10/06/25 ES51925 3000 Counts Smart DMM 10 IVSL I Low current measurement input 11 OVX I Input high voltage for resistance/capacitor measurement 12 OVH I Output connection for resistance/capacitor measurement 13 OVSG I Sense low voltage for resistance measurement 14 OR1 O Reference resistor connection for 300.0Ω range 15 VR5 O Voltage measurement ÷10000 attenuated (1000V) 16 VR4 O Voltage measurement ÷1000 attenuated (300.0V) 17 VR3 O Voltage measurement ÷100 attenuated (30.00V) 18 VR2 O Voltage measurement ÷10 attenuated (3.000V) 19 TEST5 I/O Test pin 20 ACVL I DC signal low input in ACV/ACA mode. Connect to negative output of external AC to DC converter. 21 ACVH I DC signal high input in ACV/ACA mode. Connect to positive output of external AC to DC converter. 22 ADI I Negative input of internal AC to DC OP Amp. 23 ADO O Output of internal AC to DC OP Amp. 24 OHMC4 O Filter capacitor connection for resistance mode 25 OHMC3 O Filter capacitor connection for resistance mode 26 OHMC2 O Filter capacitor connection for resistance mode 27 OHMC1 O Filter capacitor connection for resistance mode 28 NC - 29 VRH O Output of band-gap voltage reference. Typically –1.2V 30 VR I Reference input voltage connection. Typically –400mV 31 SGND I Signal Ground. 32 ADP I Measurement input in ADP mode 33 VA+ I For ADP mode. De-integrating voltage positive input. The input should be higher than VA-. 34 VA- I For ADP mode. De-integrating voltage negative input. The input should be lower than VA+. 35 VR1 I Measurement input. 36 NC - 37 CA- I/O Negative auto-zero capacitor connection for capacitor measurement 38 CA+ I/O Positive auto-zero capacitor connection for capacitor measurement 39 R9K O Connect to a precise 9KΩ resister for capacitor measurement. 40 R1K O Connect to a precise 1KΩ resister for capacitor measurement. 41 SLEEP O Sleep mode indicator, asserts low in SLEEP mode. Normal V+ output. 42 BUZIN I Pull to V- to enable the BUZOUT. 43 APOSEL I Auto power off idle time selection. 44 BUZOUT O Outputs a 2KHz audio frequency signal for driving piezoelectric buzzer 45 ACEN O Output to V- when AC mode inactive and output to V+ in AC mode. 46 – 50 NC - 51 BKOUT O If BKLIT function is enabled, this 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. 52 ANNUNC 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 back plane to turn it off. 53 BP4 O LCD backplane 4 54 BP3 O LCD backplane 3 55 BP2 O LCD backplane 2 56 BP1 O LCD backplane 1 57 EFEN I Pull-low to enable non-contact AC voltage detection 58 BKLIT I Back light function. Pulse low to set BKOUT pin output. 59 NC - 60 RANGE I Pulse to V- to enable manual mode and manual range selection. |
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