Datasheet

AD7654
Rev. B | Page 3 of 28
SPECIFICATIONS
AVDD = DVDD = 5 V, OVDD = 2.7 V to 5.25 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
INx
– V
INxN
0 2 V
REF
V
Common-Mode Input Voltage V
INxN
−0.1 +0.5 V
Analog Input CMRR f
IN
= 100 kHz 55 dB
Input Current 500 kSPS throughput 45 µA
Input Impedance
1
THROUGHPUT SPEED
Complete Cycle In normal mode 2 µs
Throughput Rate In normal mode 0 500 kSPS
Complete Cycle In impulse mode 2.25 µs
Throughput Rate In impulse mode 0 444 kSPS
DC ACCURACY
Integral Linearity Error
2
−3.5 +3.5 LSB
3
No Missing Codes 16 Bits
Transition Noise 0.7 LSB
Full-Scale Error
4
T
MIN
to T
MAX
±0.25 ±0.5 % of FSR
Full-Scale Error Drift
4
±2 ppm/°C
Unipolar Zero Error
4
T
MIN
to T
MAX
±0.25 % of FSR
Unipolar Zero Error Drift
4
±0.8 ppm/°C
Power Supply Sensitivity AVDD = 5 V ±5% 0.8 LSB
AC ACCURACY
Signal-to-Noise f
IN
= 20 kHz 88 90 dB
5
f
IN
= 100 kHz 89 dB
Spurious-Free Dynamic Range f
IN
= 100 kHz 105 dB
Total Harmonic Distortion f
IN
= 100 kHz −100 dB
Signal-to-Noise and Distortion f
IN
= 20 kHz 87.5 90 dB
f
IN
= 100 kHz 88.5 dB
f
IN
= 100 kHz, −60 dB Input 30 dB
Channel-to-Channel Isolation f
IN
= 100 kHz −92 dB
−3 dB Input Bandwidth 10 MHz
SAMPLING DYNAMICS
Aperture Delay 2 ns
Aperture Delay Matching 30 ps
Aperture Jitter 5 ps rms
Transient Response Full-scale step 250 ns
REFERENCE
External Reference Voltage Range 2.3 2.5 AVDD/2 V
External Reference Current Drain 500 kSPS throughput 180 µA
DIGITAL INPUTS
Logic Levels
V
IL
−0.3 +0.8 V
V
IH
+2.0 DVDD + 0.3 V
I
IL
−1 +1 µA
I
IH
−1 +1 µA