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AD4685 Datasheet(PDF) 3 Page - Analog Devices |
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AD4685 Datasheet(HTML) 3 Page - Analog Devices |
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3 / 32 page  Data Sheet AD4684/AD4685 SPECIFICATIONS analog.com Rev. 0 | 3 of 32 VCC = 3.0 V to 3.6 V, VLOGIC = 1.65 V to 3.6 V, reference voltage (VREF) = 2.5 V internal, sampling frequency (fSAMPLE) = 1 MSPS, TA = −40°C to +125°C, and no oversampling enabled, unless otherwise noted. Table 1. Specifications Parameter Test Conditions/Comments Min Typ Max Unit RESOLUTION 16 Bits THROUGHPUT Single Channel Pair SEQ = 0 AD4684 1 MSPS AD4685 500 kSPS Alternating Channels SEQ = 1 AD4684 500 kSPS AD4685 250 kSPS DC ACCURACY No Missing Codes 16 Bits Differential Nonlinearity (DNL) −1.0 ±0.5 +1.0 LSB Integral Nonlinearity (INL) −3.5 ±1.5 +3.5 LSB Gain Error −0.025 ±0.006 +0.025 %FS Gain Error Temperature Drift −3 ±1 +3 ppm/°C Gain Error Match −0.025 ±0.006 +0.025 %FS Offset Error −0.6 ±0.1 +0.6 mV Offset Error Temperature Drift −3 ±1 +3 µV/°C Offset Error Match −0.5 0.12 +0.5 mV AC ACCURACY Input frequency (fIN) = 1 kHz Dynamic Range VREF = 3.3 V external 87.8 dB 86 dB Oversampled Dynamic Range OSR_MODE = 1, OSR = 4, RES = 1 91.5 dB Signal-to-Noise Ratio (SNR) VREF = 3.3 V external 85.5 87.5 dB 83.5 85.5 dB OSR_MODE = 1, OSR = 8, RES = 1 93 dB fIN = 100 kHz 85.3 dB Spurious-Free Dynamic Range (SFDR) −100 dB Total Harmonic Distortion (THD) VREF = 3.3 V external −99 dB −98 dB fIN = 100 kHz −96 dB Signal-to-Noise-and-Distortion (SINAD) VREF = 3.3 V 85 87.4 dB 83 85.5 dB Channel to Channel Isolation −109.7 dB Channel to Channel Memory −93.5 dB ANALOG INPUT Voltage Input Range 0 VREF V DC Leakage Current 0.1 1 µA Input Capacitance When in track mode 18 pF When in hold mode 5 pF SAMPLING DYNAMICS Input Bandwidth At −0.1 dB 5.3 MHz At −3 dB 22 MHz Aperture Delay 2 ns Aperture Delay Match 300 450 ps Aperture Jitter 20 ps |
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