Datasheet

Data Sheet AD7699
Rev. | Page 3 of 28
SPECIFICATIONS
VDD = 4.5 V to 5.5 V, V
REF
= 4.096 to VDD, VIO = 1.8 V to VDD, all specifications T
MIN
to T
MAX
, unless otherwise noted.
Table 2.
Parameter Conditions/Comments Min Typ Max Unit
RESOLUTION 16 Bits
ANALOG INPUT
Voltage Range Unipolar mode 0 +V
REF
V
Bipolar mode −V
REF
/2 +V
REF
/2 V
Absolute Input Voltage Positive input, unipolar and bipolar modes −0.1 V
REF
+ 0.1 V
Negative or COM input, unipolar mode −0.1 +0.1 V
Negative or COM input, bipolar mode V
REF
/2 − 0.1 V
REF
/2 V
REF
/2 + 0.1 V
Analog Input CMRR f
IN
= 250 kHz 68 dB
Leakage Current at 25°C Input
Impedance
1
Acquisition phase 1 nA
THROUGHPUT
Conversion Rate
Full Bandwidth
2
0 500 kSPS
¼ Bandwidth
2
0 125 kSPS
Transient Response Full-scale step, full bandwidth 400 ns
Full-scale step, ¼ bandwidth 1600 ns
ACCURACY
No Missing Codes 16 Bits
Integral Linearity Error −1.5 ±0.5 +1.5 LSB
3
Differential Linearity Error −1 ±0.25 +1.5 LSB
Transition Noise REF = VDD = 5 V 0.5 LSB
Gain Error
4
All modes −10 ±1 +10 LSB
Gain Error Match −3 ±1 +3 LSB
Gain Error Temperature Drift ±0.3 ppm/°C
Offset Error
4
All modes −10 ±1 +10 LSB
Offset Error Match −3 ±1 +3 LSB
Offset Error Temperature Drift ±0.3 ppm/°C
Power Supply Sensitivity
VDD = 5 V ± 5%
±1.5 LSB
AC Accuracy
Dynamic Range 93.3 dB
5
Signal-to-Noise f
IN
= 20 kHz, VREF = 5 V 92 92.5 dB
f
IN
= 20 kHz, VREF = 4.096 V internal REF 89.5 91.5 dB
SINAD f
IN
= 20 kHz, VREF = 5 V 90 91.5 dB
f
IN
= 20 kHz, VREF = 5 V, −60 dB input 33.5 dB
f
IN
= 20 kHz, VREF = 4.096 V internal REF 89 90.5 dB
Total Harmonic Distortion f
IN
= 20 kHz −97 dB
Spurious-Free Dynamic Range f
IN
= 20 kHz 112 dB
Channel-to-Channel Crosstalk f
IN
= 100 kHz on adjacent channel(s) −125 dB
SAMPLING DYNAMICS
−3 dB Input Bandwidth Full bandwidth 14 MHz
¼ bandwidth 3.6 MHz
Aperture Delay VDD = 5 V 2.5 ns
B