AD7608
Data Sheet
Rev. A | Page 4 of 32
SPECIFICATIONS
VREF = 2.5 V external/internal, AVCC = 4.75 V to 5.25 V, VDRIVE = 2.3 V to 5.25 V; fSAMPLE = 200 kSPS, TA = TMIN to TMAX, unless otherwise noted.1 Table 2.
Parameter
Test Conditions/Comments
Min
Typ
Max
Unit
DYNAMIC PERFORMANCE
fIN = 1 kHz sine wave unless otherwise noted
Signal-to-Noise Ratio (SNR
)2, 3Oversampling by 16; ±10 V range; fIN = 130 Hz
98
99.5
dB
Oversampling by 16; ±5 V range; fIN = 130 Hz
95.5
97.5
dB
No oversampling; ±10 V range
89.5
90.9
dB
No oversampling; ±5 V range
88.5
90
dB
Signal-to-(Noise + Distortion) (SINA
D)2No oversampling; ±10 V range
88.5
90.5
dB
No oversampling; ±5 V range
88
89.5
dB
Dynamic Range
No oversampling; ±10 V range
91.5
dB
No oversampling; ±5 V range
90.5
dB
Total Harmonic Distortion (TH
D)2107
95
dB
Peak Harmonic or Spurious Noise (SFD
R)2108
dB
Intermodulation Distortion (IM
D)2fa = 1 kHz, fb = 1.1 kHz
Second-Order Terms
110
dB
Third-Order Terms
106
dB
Channel-to-Channel Isolati
on2fIN on unselected channels up to 160 kHz
95
dB
ANALOG INPUT FILTER
Full Power Bandwidth
3 dB, ±10 V range
23
kHz
3 dB, ±5 V range
15
kHz
0.1 dB, ±10 V range
10
kHz
0.1 dB, ±5 V range
5
kHz
tGROUP DELAY
±10 V range
11
s
±5 V range
15
s
DC ACCURACY
Resolution
No missing codes
18
Bits
Differential Nonlinear
ity2±0.75
0.99/+2.6
±2.5
±7.5
LSB
Total Unadjusted Error (TUE)
±10 V range
±15
LSB
±5 V range
±40
LSB
External reference
±15
±128
LSB
Internal reference
±40
LSB
Positive Full-Scale Error Drift
External reference
±2
ppm/°C
Internal reference
±7
ppm/°C
Positive Full-Scale Error Matchin
g2±10 V range
12
95
LSB
±5 V range
30
128
LSB
±10 V range
±3.5
±24
LSB
± 5 V range
±3.5
±48
LSB
Bipolar Zero Code Error Drift
±10 V range
10
V/°C
± 5 V range
5
V/°C
Bipolar Zero Code Error Matchi
ng2±10 V range
3
30
LSB
±5 V range
21
65
LSB
External reference
±15
±128
LSB
Internal reference
±40
LSB
Negative Full-Scale Error Drift
External reference
±4
ppm/°C
Internal reference
±8
ppm/°C
Negative Full-Scale Error Matching2
±10 V range
12
95
LSB
±5 V range
30
128
LSB