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AD7768-4BSTZ Datasheet(PDF) 6 Page - Analog Devices |
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AD7768-4BSTZ Datasheet(HTML) 6 Page - Analog Devices |
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6 / 99 page  AD7768/AD7768-4 Data Sheet Rev. A | Page 6 of 99 SPECIFICATIONS AVDD1A = AVDD1B = 4.5 V to 5.5 V, AVDD2A = AVDD2B = 2.0 V to 5.5 V, IOVDD = 2.25 V to 3.6 V, AVSS = DGND = 0 V, REFx+ = 4.096 V and REFx− = 0 V, MCLK = 32.768 MHz, analog input precharge buffers on, reference precharge buffers off, wideband filter, fCHOP = fMOD/32, TA = −40°C to +105°C, unless otherwise noted. See Table 2 for specifications at 1.8 V IOVDD. Table 1. Parameter Test Conditions/Comments Min Typ Max Unit ADC SPEED AND PERFORMANCE Output Data Rate (ODR), per Channel1 Fast 8 256 kSPS Median 4 128 kSPS Eco 1 32 kSPS −3 dB Bandwidth Fast, wideband filter 110.8 kHz Median, wideband filter 55.4 kHz Eco, wideband filter 13.8 kHz Data Output Coding Twos complement, MSB first No Missing Codes2 24 Bits DYNAMIC PERFORMANCE For 1.8 V operation, see Table 2; for dynamic range and SNR across all dec- imation rates, see Table 12 and Table 13 Fast Decimation by 32, 256 kSPS ODR Dynamic Range Shorted input, wideband filter 106.2 108 dB Signal-to-Noise Ratio (SNR) 1 kHz, −0.5 dBFS, sine wave input Sinc5 filter 109 111 dB Wideband filter 106 107.8 dB Signal-to-Noise-and- Distortion Ratio (SINAD) 1 kHz, −0.5 dBFS, sine wave input 104.7 107.5 dB Total Harmonic Distortion (THD) 1 kHz, −0.5 dBFS, sine wave input −120 −107 dB Spurious-Free Dynamic Range (SFDR) 128 dBc Median Decimation by 32, 128 kHz ODR Dynamic Range Shorted input, wideband filter 106.2 108 dB SNR Sinc5 filter, 1 kHz, −0.5 dBFS, sine wave input 109 111 dB Wideband filter, 1 kHz, −0.5 dBFS, sine wave input 106 107.8 dB SINAD 1 kHz, −0.5 dBFS, sine wave input 105.8 107.5 dB THD 1 kHz, −0.5 dBFS, sine wave input −120 −113 dB SFDR 128 dBc Eco Decimation by 32, 32 kHz ODR Dynamic Range Shorted input, wideband filter 106.2 108 dB SNR Sinc5 filter, 1 kHz, −0.5 dBFS, sine wave input 109 111 dB Wideband filter, 1 kHz, −0.5 dBFS, sine wave input 106 107.8 dB SINAD 1 kHz, −0.5 dBFS, sine wave input 105.8 107.5 dB THD 1 kHz, −0.5 dBFS, sine wave input −120 −113 dB SFDR 128 dBc INTERMODULATON DISTORTION (IMD)3 fa = 9.7 kHz, fb = 10.3 kHz Second order −125 dB Third order −125 dB |
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