AD7765(Rev0) 查看數據表（PDF） - Analog Devices
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AD7765
(Rev.:Rev0)
(Rev.:Rev0)
Analog Devices
AD7765 Datasheet PDF : 32 Pages
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AD7765
SPECIFICATIONS
AVDD1 = DVDD = VDRIVE = 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 row one of Table 7, unless otherwise noted.1
Table 2
Parameter
DYNAMIC PERFORMANCE
Decimate 256×
Normal Power Mode
Dynamic Range
Test Conditions/Comments
MCLK = 40 MHz, ODR = 78.125 kHz, fIN = 1 kHz sine wave
Modulator inputs shorted
Signal-to-Noise Ratio (SNR)2
Differential amplifier inputs shorted
Input amplitude = −0.5 dB
Spurious-Free Dynamic Range (SFDR)
Total Harmonic Distortion (THD)
Low Power Mode
Dynamic Range
Nonharmonic
Input amplitude = −0.5 dB
Input amplitude = −6 dB
Input amplitude = −60 dB
MCLK = 40 MHz, ODR = 78.125 kHz, fIN = 1 kHz sine wave
Modulator inputs shorted
Signal-to-Noise Ratio (SNR)2
Differential amplifier inputs shorted
Input amplitude = −0.5 dB
Total Harmonic Distortion (THD)
Decimate 128×
Normal Power Mode
Dynamic Range
Input amplitude = −0.5 dB
Input amplitude = −6 dB
Input amplitude = −6 dB
Input amplitude = −60 dB
MCLK = 40 MHz, ODR = 156.25 kHz, fIN = 1 kHz sine wave
Modulator inputs shorted
Signal to Noise Ratio (SNR)2
Differential amplifier inputs shorted
Spurious-Free Dynamic Range (SFDR)
Total Harmonic Distortion (THD)
Intermodulation Distortion (IMD)
Low Power Mode
Dynamic Range
Nonharmonic
Input amplitude = −0.5 dB
Input amplitude = −6 dB
Input amplitude = −6 dB, fIN A = 50.3 kHz, fIN B = 47.3 kHz
Second-order terms
Third-order terms
MCLK = 40 MHz, ODR = 156.25 kHz, fIN = 1 kHz sine wave
Modulator inputs shorted
Signal-to-Noise Ratio (SNR)2
Differential amplifier inputs shorted
Input amplitude = −0.5 dB
Total Harmonic Distortion (THD)
Intermodulation Distortion (IMD)
Input amplitude = −0.5 dB
Input amplitude = −6 dB
Input amplitude = −6 dB
Input amplitude = −6 dB, fIN A= 50.3 kHz, fIN B = 47.3 kHz
Second-order terms
Third-order terms
Specification Unit
115
110
113.4
109
106
130
−105
−103
−71
113
110
112
109
106
−105
−111
−100
−76
112
108
110.4
107
105
130
−105
−103
−117
−108
110
109
109
107
105
−105
−111
−100
−134
−110
dB typ
dB min
dB typ
dB typ
dB min
dBFS typ
dB typ
dB typ
dB typ
dB typ
dB min
dB typ
dB typ
dB min
dB typ
dB typ
dB max
dB typ
dB typ
dB min
dB typ
dB typ
dB min
dBFS typ
dB typ
dB typ
dB typ
dB typ
dB typ
dB min
dB typ
dB typ
dB min
dB typ
dB typ
dB max
dB typ
dB typ
Rev. 0 | Page 3 of 32
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