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ES51985 Datasheet(PDF) 3 Page - Cyrustek corporation |
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ES51985 Datasheet(HTML) 3 Page - Cyrustek corporation |
3 / 21 page 07/01/02 3 ES51985 6000 Count 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 connection 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 600.0Ω range 17 VR5 O Voltage measurement ÷10000 attenuator(6000V) 18 VR4 O Voltage measurement ÷1000 attenuator(600.0V) 19 VR3 O Voltage measurement ÷100 attenuator(60.00V) 20 VR2 O Voltage measurement ÷10 attenuator(6.000V) 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 temperature 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 FREQ I Frequency counter input, offset V-/2 internally by the chip. 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 SEG16 O LCD segment line 17~14 48 NC - |
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