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APT7846 Datasheet(PDF) 3 Page - Anpec Electronics Coropration |
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APT7846 Datasheet(HTML) 3 Page - Anpec Electronics Coropration |
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3 / 15 page  Copyright ANPEC Electronics Corp. Rev. A.6 - Dec., 2001 APT7846 www.anpec.com.tw 3 Electrical Characteristics At T A = -40°C to 85°C, VCC = +2.7V , VREF = +2.5V , fSAMPLE = 125kHz , fCLK = 16 f SAMPLE = 2MHz , 12-bit mode , and digital inputs = GND or V cc , unless otherwise noted. APT7846 PARAMETER CONDITIONS MIN TYP MAX UNIT DC ACCURACY Resolution 12 Bits No missing code 11 Bits Integral Nonlinearity ± 2 LSB Offset Error ± 6 LSB Offset Error Match 0.1 1 LSB Gain Error ± 4 LSB Gain Error Match 0.1 1 LSB Noise 30 uV rms Power Supply Rejection 70 dB REFERENCE INPUT VREF Input Voltage Range 1.0 Vcc DC Leakage Current ± 1 µA VREF Input Impedance CS = GND or Vcc 5 GΩ VREF Input Current 13 40 µA FSAMPLE = 12.5 kHz 2.5 µA CS = Vcc 3 µA REFERENCE OUTPUT Internal Reference Voltage 2.4 2.5 2.6 V Input Impedence Internal Reference Off 1 GΩ DYNAMIC PERFORMANCE Aperture Delay 30 ns Aperture Jitter 100 ps Channel to Channel Isolation VIN = 2.5Vp-p ; FIN = 50kHz 100 dB CONVERSION RATE Conversion Time 12 DCLK cycles Track/Hold Acquisition Time 3 DCLK cycles Throughput Rate 125 KSPS SWITCH DRIVERS On-Resistance Y+ , X+ 4 15 Ω Y- , X- 4 15 Ω |
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