Datasheet

AD7760
Rev. A | Page 4 of 36
SPECIFICATIONS
AV
DD
1 = DV
DD
= V
DRIVE
= 2.5 V, AV
DD
2 = AV
DD
3 = AV
DD
4 = 5 V, V
REF+
= 4.096 V, MCLK amplitude = 5 V, T
A
= 25°C, normal mode, using
the on-chip amplifier with components as shown in
Table 8, unless otherwise noted.
1
Table 2.
Parameter Test Conditions/Comments Specification Unit
DYNAMIC PERFORMANCE
Decimate by 256 MCLK = 40 MHz, ODR = 78 kHz, f
IN
= 1 kHz
Dynamic Range Modulator inputs shorted 119 dB min
120.5 dB typ
Signal-to-Noise Ratio (SNR)
2
Input 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, f
IN
=100 kHz
Dynamic Range Modulator inputs shorted 108 dB min
109.5 dB typ
Signal-to-Noise Ratio (SNR)
2
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
Signal-to-Noise Ratio (SNR)
2
f
IN
= 1 kHz, input amplitude = −0.5 dBFS 100 dB typ
f
IN
= 100 kHz, input amplitude = −0.5 dBFS 99 dB typ
f
IN
= 1 MHz, input amplitude = −0.5 dBFS 98 dB typ
Spurious-Free Dynamic Range (SFDR) Nonharmonic, f
IN
= 100 kHz, input amplitude = −6 dBFS 120 dBc typ
Nonharmonic, f
IN
= 1 MHz, input amplitude = −6 dBFS 114 dBc typ
Total Harmonic Distortion (THD) Input amplitude = −0.5 dBFS, f
IN
= 100 kHz −103 dB typ
Input amplitude = −6 dBFS, f
IN
= 100 kHz −102 dB typ
IMD Second Order f
IN
A = 989.95 kHz, f
IN
B = 999.95 kHz −115 dB typ
IMD Third Order f
IN
A = 989.95 kHz, f
IN
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