Datasheet
AD7609 Data Sheet
Rev. A | Page 4 of 36
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
= 160 Hz 98 101 dB
Oversampling by 16; ±5 V range; f
IN
= 160 Hz 100 dB
No oversampling; ±10 V range 90 91 dB
No oversampling; ±5 V range 89.5 90.5 dB
Signal-to-(Noise + Distortion) (SINAD)
2
No oversampling; ±10 V range 89.5 91 dB
No oversampling; ±5 V range 89 90 dB
Dynamic Range No oversampling; ±10 V range 91.5 dB
No oversampling; ±5 V range 90.5 dB
Total Harmonic Distortion (THD)
2, 3
No oversampling; ±10 V range −107 −97 dB
No oversampling; ±5 V range −110 −96 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 32 kHz
−3 dB, ±5 V range 23 kHz
−0.1 dB, ±10 V range 13 kHz
−0.1 dB, ±5 V range 10 kHz
t
GROUP DELAY
±10 V range 7.1 µs
±5 V range 10.2 µs
DC ACCURACY
Resolution No missing codes 18 Bits
Differential Nonlinearity
2
±0.75 −0.99/+2 LSB
4
Integral Nonlinearity
2
±3 ±7.5 LSB
Total Unadjusted Error (TUE) ±10 V range ±10 LSB
±5 V range
±90
LSB
Positive Full-Scale Error
2, 5
External reference ±8 ±140 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
80
LSB
±5 V range 40 100 LSB
Bipolar Zero Code Error
2,
6
±10 V range ±3 ±24 LSB
± 5 V range ±3 ±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
2.7
30
LSB
±5 V range 13 65 LSB
Negative Full-Scale Error
2, 5
External reference ±8 ±140 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
80
LSB
±5 V range 40 100 LSB