Datasheet

Data Sheet AD7626
Rev. B | Page 3 of 28
SPECIFICATIONS
VDD1 = 5 V; VDD2 = 2.5 V; VIO = 2.5 V; REF = 4.096 V; all specifications T
MIN
to T
MAX
, unless otherwise noted.
Table 2.
Parameter Test Conditions/Comments Min Typ Max Unit
RESOLUTION 16 Bits
ANALOG INPUT
Voltage Range V
IN+
− V
IN−
−V
REF
+V
REF
V
Operating Input Voltage V
IN+
, V
IN−
to AGND −0.1 V
REF
+ 0.1 V
Common-Mode Input Range V
REF
/2 − 0.05 V
REF
/2 V
REF
/2 + 0.05 V
CMRR f
IN
= 1 MHz 68 dB
Input Current Midscale input 168 µA
THROUGHPUT
Complete Cycle 100 ns
Throughput Rate 0.1 10 MSPS
DC ACCURACY
Integral Linearity Error −1.5 ±0.45 +1.5 LSB
No Missing Codes 16 Bits
Differential Linearity Error −0.5 ±0.35 +0.5 LSB
Transition Noise 0.6 LSB
Zero Error, T
MIN
to T
MAX
−6 ±1 +6 LSB
Zero Error Drift 0.5 ppm/°C
Gain Error, T
MIN
to T
MAX
8 20 LSB
Gain Error Drift 0.7 ppm/°C
Power Supply Sensitivity
1
VDD1 = 5 V ± 5% 0.4 LSB
VDD2 = 2.5 V ± 5% 0.2 LSB
AC ACCURACY
f
IN
= 20 kHz, −0.5 dBFS
Dynamic Range
90.5
91.5
dB
Signal-to-Noise Ratio 90 91 dB
Spurious-Free Dynamic Range 105 dB
Total Harmonic Distortion −105.5 dB
Signal-to-(Noise + Distortion) 89.5 91 dB
f
IN
= 100 kHz, −0.5 dBFS
Signal-to-Noise Ratio 91.3 dB
Spurious-Free Dynamic Range 104.5 dB
Total Harmonic Distortion −102.5 dB
Signal-to-(Noise + Distortion) 91 dB
f
IN
= 2.4 MHz, −1 dBFS
Signal-to-Noise Ratio 88.5 dBFS
Spurious-Free Dynamic Range 84 dB
Total Harmonic Distortion −86 dB
Signal-to-(Noise + Distortion) 85 dB
f
IN
= 2.4 MHz, −6 dBFS
Signal-to-Noise Ratio 89 dBFS
Spurious-Free Dynamic Range
84
dB
Total Harmonic Distortion −93 dB
Signal-to-(Noise + Distortion) 88 dB
−3 dB Input Bandwidth 95 MHz
Aperture Jitter 0.25 ps rms
INTERNAL REFERENCE
Output Voltage REFIN @ 25°C 1.18 1.19 1.2 V
Temperature Drift −40°C to +85°C ±15 ppm/°C