Datasheet

AD7608 Data Sheet
Rev. A | Page 4 of 32
SPECIFICATIONS
V
REF
= 2.5 V external/internal, AV
CC
= 4.75 V to 5.25 V, V
DRIVE
= 2.3 V to 5.25 V; f
SAMPLE
= 200 kSPS, T
A
= T
MIN
to T
MAX
, unless otherwise noted.
1
Table 2.
Parameter Test Conditions/Comments Min Typ Max Unit
DYNAMIC PERFORMANCE f
IN
= 1 kHz sine wave unless otherwise noted
Signal-to-Noise Ratio (SNR)
2, 3
Oversampling by 16; ±10 V range; f
IN
= 130 Hz
98
99.5
dB
Oversampling by 16; ±5 V range; f
IN
= 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) (SINAD)
2
No 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 (THD)
2
−107 −95 dB
Peak Harmonic or Spurious Noise (SFDR)
2
−108 dB
Intermodulation Distortion (IMD)
2
fa = 1 kHz, fb = 1.1 kHz
Second-Order Terms
−110
dB
Third-Order Terms −106 dB
Channel-to-Channel Isolation
2
f
IN
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
t
GROUP DELAY
±10 V range
11
µs
±5 V range 15 µs
DC ACCURACY
Resolution
No missing codes
18
Bits
Differential Nonlinearity
2
±0.75 −0.99/+2.6 LSB
4
Integral Nonlinearity
2
±2.5 ±7.5 LSB
Total Unadjusted Error (TUE) ±10 V range ±15 LSB
±5 V range ±40 LSB
Positive Full-Scale Error
2, 5
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 Matching
2
±10 V range 12 95 LSB
±5 V range 30 128 LSB
Bipolar Zero Code Error
2, 6
±10 V range
±3.5
±24
LSB
± 5 V range ±3.5 ±48 LSB
Bipolar Zero Code Error Drift ±10 V range 10 µV/°C
± 5 V range 5 µV/°C
Bipolar Zero Code Error Matching
2
±10 V range 3 30 LSB
±5 V range 21 65 LSB
Negative Full-Scale Error
2, 5
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 Matching
2
±10 V range 12 95 LSB
±5 V range 30 128 LSB