
AD7760
Rev. A | Page 4 of 36
SPECIFICATIONS
AVDD1 = DVDD = VDRIVE = 2.5 V, AVDD2 = AVDD3 = AVDD4 = 5 V, VREF+ = 4.096 V, MCLK amplitude = 5 V, TA = 25°C, normal mode, using
the on-chip amplifier with components as shown in
Table 8, unless otherwise noted.
1Table 2.
Parameter
Test Conditions/Comments
Specification
Unit
DYNAMIC PERFORMANCE
Decimate by 256
MCLK = 40 MHz, ODR = 78 kHz, fIN = 1 kHz
Dynamic Range
Modulator inputs shorted
119
dB min
120.5
dB typ
Signal-to-Noise Ratio (SNR)
2Input amplitude = 0.5 dBFS
112
dB typ
Input amplitude = 60 dBFS
59
dB typ
Spurious-Free Dynamic Range (SFDR)
Nonharmonic, input amplitude = 6 dBFS
126
dBc typ
Input amplitude = 60 dBFS
77
dBc typ
Total Harmonic Distortion (THD)
Input amplitude = 0.5 dBFS
105
dB typ
Input amplitude = 6 dBFS
106
dB typ
Input amplitude = 60 dBFS
75
dB typ
Decimate by 32
MCLK = 40 MHz, ODR = 625 kHz, fIN =100 kHz
Dynamic Range
Modulator inputs shorted
108
dB min
109.5
dB typ
Input amplitude = 0.5 dBFS
107
dB typ
Spurious-Free Dynamic Range (SFDR)
Nonharmonic, input amplitude = 6 dBFS
120
dBc typ
Total Harmonic Distortion (THD)
Input amplitude = 0.5 dBFS
105
dB typ
Input amplitude = 6 dBFS
106
dB typ
Decimate by 8
MCLK = 40 MHz, ODR = 2.5 MHz
Dynamic Range
Modulator inputs shorted
99
dB min
100.5
dB typ
fIN = 1 kHz, input amplitude = 0.5 dBFS
100
dB typ
fIN = 100 kHz, input amplitude = 0.5 dBFS
99
dB typ
fIN = 1 MHz, input amplitude = 0.5 dBFS
98
dB typ
Spurious-Free Dynamic Range (SFDR)
Nonharmonic, fIN = 100 kHz, input amplitude = 6 dBFS
120
dBc typ
Nonharmonic, fIN = 1 MHz, input amplitude = 6 dBFS
114
dBc typ
Total Harmonic Distortion (THD)
Input amplitude = 0.5 dBFS, fIN = 100 kHz
103
dB typ
Input amplitude = 6 dBFS, fIN = 100 kHz
102
dB typ
IMD Second Order
fIN A = 989.95 kHz, fIN B = 999.95 kHz
115
dB typ
IMD Third Order
fIN A = 989.95 kHz, fIN B = 999.95 kHz
89
dB typ
DC ACCURACY
Resolution
24
Bits
Differential Nonlinearity
Guaranteed monotonic to 24 bits
Integral Nonlinearity
0.00076
% typ
Zero Error
0.014
% typ
0.02
% max
Gain Error
0.016
% typ
Zero Error Drift
0.00001
% FS/°C typ
Gain Error Drift
0.0002
% FS/°C typ
DIGITAL FILTER RESPONSE
Decimate by 8
Group Delay
MCLK = 40 MHz
12
μs typ
Decimate by 32
Group Delay
MCLK = 40 MHz
47
μs typ
Decimate by 256
Group Delay
MCLK = 40 MHz
358
μs typ