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AD7765 Datasheet(PDF) 4 Page - Analog Devices |
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AD7765 Datasheet(HTML) 4 Page - Analog Devices |
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4 / 33 page  AD7765 Rev. A | Page 3 of 32 SPECIFICATIONS AVDD1 = DVDD = 2.5 V, AVDD2 = AVDD3 = AVDD4 = 5 V, VREF+ = 4.096 V, MCLK amplitude = 5 V, TA = +25°C, normal power mode, using the on-chip amplifier with components as shown in the Optimal row in Table 7, unless otherwise noted.1 Parameter Table 2. Test Conditions/Comments Specification Unit DYNAMIC PERFORMANCE Decimate 256× Normal Power Mode MCLK = 40 MHz, ODR = 78.125 kHz, fIN = 1 kHz sine wave Dynamic Range Modulator inputs shorted 115 dB typ 110 dB min Differential amplifier inputs shorted 113.4 dB typ Signal-to-Noise Ratio (SNR)2 Input amplitude = −0.5 dB 109 dB typ 106 dB min Spurious-Free Dynamic Range (SFDR) Nonharmonic 130 dBFS typ Total Harmonic Distortion (THD) Input amplitude = −0.5 dB −105 dB typ Input amplitude = −6 dB −103 dB typ Input amplitude = −60 dB −71 dB typ Low Power Mode MCLK = 40 MHz, ODR = 78.125 kHz, fIN = 1 kHz sine wave Dynamic Range Modulator inputs shorted 113 dB typ 110 dB min Differential amplifier inputs shorted 112 dB typ Signal-to-Noise Ratio (SNR)2 Input amplitude = −0.5 dB 109 dB typ 106 dB min Total Harmonic Distortion (THD) Input amplitude = −0.5 dB −105 dB typ Input amplitude = −6 dB −111 dB typ Input amplitude = −6 dB −100 dB max Input amplitude = −60 dB −76 dB typ Decimate 128× Normal Power Mode MCLK = 40 MHz, ODR = 156.25 kHz, fIN = 1 kHz sine wave Dynamic Range Modulator inputs shorted 112 dB typ 108 dB min Differential amplifier inputs shorted 110.4 dB typ Signal-to-Noise Ratio (SNR)2 107 dB typ 105 dB min Spurious-Free Dynamic Range (SFDR) Nonharmonic 130 dBFS typ Total Harmonic Distortion (THD) Input amplitude = −0.5 dB −105 dB typ Input amplitude = −6 dB −103 dB typ Intermodulation Distortion (IMD) Input amplitude = −6 dB, fIN A = 50.3 kHz, fIN B = 47.3 kHz Second-order terms −117 dB typ Third-order terms −108 dB typ Low Power Mode MCLK = 40 MHz, ODR = 156.25 kHz, fIN = 1 kHz sine wave Dynamic Range Modulator inputs shorted 110 dB typ 109 dB min Differential amplifier inputs shorted 109 dB typ Signal-to-Noise Ratio (SNR)2 Input amplitude = −0.5 dB 107 dB typ 105 dB min Total Harmonic Distortion (THD) Input amplitude = −0.5 dB −105 dB typ Input amplitude = −6 dB −111 dB typ Input amplitude = −6 dB −100 dB max Intermodulation Distortion (IMD) Input amplitude = −6 dB, fIN A= 50.3 kHz, fIN B = 47.3 kHz Second-order terms −134 dB typ Third-order terms −110 dB typ |
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