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EVAL-AD7764EBZ Datasheet(PDF) 4 Page - Analog Devices |
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EVAL-AD7764EBZ Datasheet(HTML) 4 Page - Analog Devices |
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4 / 32 page  AD7764 Rev. 0 | Page 4 of 32 Parameter Test Conditions/Comments Specification Unit Decimate 64× Normal Power Mode MCLK = 40 MHz, ODR = 312.5 kHz, fIN = 1 kHz sine wave Modulator inputs shorted 109 dB typ 105 dB min Dynamic Range Differential amplifier inputs shorted 107.3 dB typ 104 dB typ Signal-to-Noise Ratio (SNR)2 102.7 dB min Spurious-Free Dynamic Range (SFDR) Nonharmonic 130 dBFS typ Input amplitude = −0.5 dB −105 dB typ Total Harmonic Distortion (THD) Input amplitude = −6 dB −103 dB typ Input amplitude = −6 dB, fIN A = 100.3 kHz, fIN B = 97.3 kHz Second-order terms −118 dB Intermodulation Distortion (IMD) Third-order terms −108 dB Low Power Mode 106 dB typ Modulator inputs shorted 105 dB min Dynamic Range Differential amplifier inputs shorted 105.3 Signal-to-Noise Ratio (SNR)2 Input amplitude = −0.5 dB 103 dB typ 102 dB min Spurious-Free Dynamic Range (SFDR) Nonharmonic 110 dBFS typ Input amplitude = −0.5 dB −105 dB typ −111 dB typ Total Harmonic Distortion (THD) Input amplitude = −6 dB −100 dB max DC ACCURACY Resolution Guaranteed monotonic to 24 bits 24 Bits Normal power mode 0.0036 % typ Integral Nonlinearity Low power mode 0.0014 % typ Normal power mode 0.006 % typ 0.03 % max Including on-chip amplifier 0.04 % typ Low power mode 0.002 % typ Zero Error 0.024 % max 0.018 % typ Gain Error Including on-chip amplifier 0.04 % typ Zero Error Drift 0.00006 %FS/°C typ Gain Error Drift 0.00005 %FS/°C typ DIGITAL FILTER CHARACTERISTICS Pass-Band Ripple 0.1 dB typ Pass Band3 −1 dB frequency ODR × 0.4016 kHz −3 dB Bandwidth3 ODR × 0.4096 kHz Stop Band3 Beginning of stop band ODR × 0.5 kHz Decimate 64× and decimate 128× modes −120 dB typ Stop-Band Attenuation Decimate 256× −115 dB typ Group Delay Decimate 64× MCLK = 40 MHz 89 μs typ Decimate 128× MCLK = 40 MHz 177 μs typ Decimate 256× MCLK = 40 MHz 358 μs typ ANALOG INPUT Differential Input Voltage Modulator input pins: VIN(+) − VIN(−), VREF+ = 4.096 V ±3.2768 V p-p Input Capacitance At on-chip differential amplifier inputs 5 pF typ At modulator inputs 29 pF typ |
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