Datasheet

AD7622
Rev. 0 | Page 3 of 28
SPECIFICATIONS
AVDD = DVDD = 2.5 V; OVDD = 2.3 V to 3.6 V; V
REF
= 2.5 V; all specifications T
MIN
to T
MAX
, unless otherwise noted.
Table 2.
Parameter Conditions 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 AVDD
1
V
Analog Input CMRR f
IN
= 100 kHz 58 dB
Input Current 2 MSPS throughput 3.5 μA
Input Impedance
2
THROUGHPUT SPEED
Complete Cycle Wideband warp, warp modes 500 ns
Throughput Rate Wideband warp, warp modes 0.001 2 MSPS
Time Between Conversions Wideband warp, warp modes 1 ms
Complete Cycle Normal mode 667 ns
Throughput Rate Normal mode 0 1.5 MSPS
DC ACCURACY
Integral Linearity Error
3
T
MIN
to T
MAX
= −40°C to +85°C −1.5 ±0.5 +1.5 LSB
4
No Missing Codes 16 Bits
Differential Linearity Error −1 +1.25 LSB
Transition Noise V
REF
= 2.5 V 0.5 LSB
Transition Noise V
REF
= 2.048 V 0.6 LSB
Zero Error, T
MIN
to T
MAX
5
−10 +10 LSB
Zero Error Temperature Drift ±0.5 ppm/°C
Gain Error, T
MIN
to T
MAX
5
−8 +8 LSB
Gain Error Temperature Drift ±0.5 ppm/°C
Power Supply Sensitivity AVDD = 2.5 V ± 5% ±4 LSB
AC ACCURACY
Dynamic Range V
REF
= 2.5 V 91.5 92.5 dB
6
Signal-to-Noise f
IN
= 20 kHz, V
REF
= 2.5 V 91 92 dB
f
IN
= 20 kHz, V
REF
= 2.048 V 89.5 90.5 dB
f
IN
= 100 kHz, V
REF
= 2.5 V 91 dB
Spurious-Free Dynamic Range f
IN
= 20 kHz, V
REF
= 2.5 V 117 dB
f
IN
= 20 kHz, V
REF
= 2.048 V 110 dB
f
IN
= 100 kHz, V
REF
= 2.5 V 101 dB
Total Harmonic Distortion f
IN
= 20 kHz, V
REF
= 2.5 V −115 dB
f
IN
= 20 kHz, V
REF
= 2.048 V −109 dB
f
IN
= 100 kHz, V
REF
= 2.5 V −100 dB
Signal-to-(Noise + Distortion) f
IN
= 20 kHz, V
REF
= 2.5 V 91 92 dB
f
IN
= 20 kHz, V
REF
= 2.048 V 89.5 90.5 dB
f
IN
= 100 kHz, V
REF
= 2.5 V 91 dB
−3 dB Input Bandwidth 50 MHz
SAMPLING DYNAMICS
Aperture Delay 1 ns
Aperture Jitter 5 ps rms
Transient Response Full-scale step 140 ns
INTERNAL REFERENCE PDREF = PDBUF = low
Output Voltage REF @ 25°C 2.038 2.048 2.058 V
Temperature Drift −40°C to +85°C ±8 ppm/°C
Line Regulation AVDD = 2.5 V ± 5% ±15 ppm/V
Turn-On Settling Time C
REF
= 10 μF 5 ms