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ES51955 Datasheet(PDF) 3 Page - Cyrustek corporation |
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ES51955 Datasheet(HTML) 3 Page - Cyrustek corporation |
3 / 31 page v2.3 10/06/25 3 ES51955(5000counts) Dual Display/Inrush Pin Description Pin No Symbol Type Description 1 ADO_A O Output of internal AC to DC OP Amp for ACA mode. 2 ADI_A I Negative input of internal AC to DC OP Amp for ACA mode. 3 TEST5_A O Buffer output of SGND for ACA mode 4 ACVL_A O DC signal low input in ACA mode. Connect to negative output of external AC to DC converter. 5 ACVH_A O DC signal high input in ACA mode. Connect to positive output of external AC to DC converter. 6 CSH+ I/O Cap for duty-cycle and inrush mode 7 CSH- I/O Cap for duty-cycle and inrush mode 8 VA- I For ADP mode. De-integrating voltage negative input 9 IVSL I Current measurement input for higher range. 10 IVSH I Current measurement input for lower range. 11 ADP I Measurement input in ADP mode. (Current/Temperature/NCV mode) 12 RAZ_A O Buffer output pin in AZ and ZI phase for ADC_A. 13 BUF_A O Buffer output pin for ADC_A. Connect to integral resistor 14 CAZ_A O Auto-zero capacitor connection for ADC_A. 15 CINT_A O Integrator output for ADC_A. Connect to integral capacitor. 16 CLN_A I/O Negative connection for reference capacitor of ADC_A. 17 CLP_A I/O Positive connection for reference capacitor of ADC_A. 18 VRH O Output of band-gap voltage reference. Typically –1.23V 19 CLP_V I/O Positive connection for reference capacitor of ADC_V. 20 CLN_V I/O Negative connection for reference capacitor of ADC_V. 21 CINT_V O Integrator output for ADC_V. Connect to integral capacitor. 22 CAZ_V O Auto-zero capacitor connection for ADC_V. 23 BUF_V O Buffer output pin for ADC_V. Connect to integral resistor 24 RAZ O Buffer output pin in AZ and ZI phase for ADC_V. 25-28 OHMC1-4 O Filter capacitor connection1-4 for resistance mode. 29 VR_A I Reference input voltage in current mode or ADP. Typically –400mV 30 DAC_AO O DAC output for current mode or ADP input mode 31 VR I Reference input voltage in voltage mode. Typically –400mV 32 DAC_VO O DAC output for voltage mode 33 OR1 O Reference resistor connection for 500.00Ω range 34 VR5 O Voltage measurement ÷10000 attenuator(1000V) 35 VR4 O Voltage measurement ÷1000 attenuator(500.0V) 36 VR3 O Voltage measurement ÷100 attenuator(50.00V) 37 VR2 O Voltage measurement ÷10 attenuator(5.000V) 38 OVSG O Sense low voltage for resistance/voltage measurement 39 VR1 I Measurement Input. Connect to a precise 10MΩ resistor. 40 ACVL_V O DC signal low input in ACV mode. Connect to negative output of external AC to DC converter. 41 ACVH_V O DC signal high input in ACV mode. Connect to positive output of external AC to DC converter. 42 ADI_V I Negative input of internal AC to DC OP Amp for ACV mode. 43 ADO_V O Output of internal AC to DC OP Amp for ACV mode. 44 TEST5_V O Buffer output of OVSG for ACV mode 45 SGND G Signal Ground. 46 CA- I/O Negative auto-zero capacitor connection for capacitor measurement 47 CA+ I/O Positive auto-zero capacitor connection for capacitor measurement 48 R9K O Connect to a precise 9KΩ resister for capacitor measurement. 49 R1K O Connect to a precise 1KΩ resister for capacitor measurement. 50 OVX I Sense input for resistance/capacitance measurement 51 OVH O Output connection for resistance measurement 52 OVH1 O Output connection for resistance measurement (Optional) |
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