ADAR7251_15 Datasheet, PDF (5/72 Pages) Analog Devices – 4-Channel, 16-Bit, Continuous Time Data Acquisition ADC

Data Sheet
ADAR7251
SPECIFICATIONS
ANALOG CHANNEL
AVDDx = 3.3 V, DVDDx = 1.8 V, IOVDDx = 3.3 V, VREF = 1.5 V internal/external reference, fSAMPLE = 1.2 MSPS, TAMB = −40°C to +125°C,
unless otherwise noted.
Table 1.
Parameter
Test Conditions/Comments
Min
Typ
Max
Unit
DYNAMIC PERFORMANCE
Input Referred Noise Spectral Density
Frequency = 100 Hz
Gain = 9 dB
44.7
nV/√Hz
Gain = 15 dB
23.6
nV/√Hz
Gain = 21 dB
15
nV/√Hz
Gain = 27 dB
12
nV/√Hz
Gain = 33 dB
11.3
nV/√Hz
Gain = 39 dB
10.9
nV/√Hz
Gain = 45 dB
10.8
nV/√Hz
Frequency = 1 kHz
Gain = 9 dB
16
nV/√Hz
Gain = 15 dB
8.7
nV/√Hz
Gain = 21 dB
5.4
nV/√Hz
Gain = 27 dB
4.3
nV/√Hz
Gain = 33 dB
4
nV/√Hz
Gain = 39 dB
3.86
nV/√Hz
Gain = 45 dB
3.83
nV/√Hz
Frequency = 100 kHz
Gain = 9 dB
9.7
nV/√Hz
Gain = 15 dB
5.2
nV/√Hz
Gain = 21 dB
3.3
nV/√Hz
Gain = 27 dB
2.67
nV/√Hz
Gain = 33 dB
2.5
nV/√Hz
Gain = 39 dB
2.44
nV/√Hz
Gain = 45 dB
2.4
nV/√Hz
Equalizer Corner Frequency
Setting 1 EQ00
54
kHz
Setting 2 EQ01
45
kHz
Setting 3 EQ10
37
kHz
Setting 4 EQ11
32
kHz
Signal to Noise Ratio (SNR)
No input signal and reference to 0 dBFS 88
94
dB
Spurious-Free Dynamic Range (SFDR)
At −3 dBFS input, 100 kHz
68
82
dB
Total Harmonic Distortion Plus Noise (THD + N) At −3 dBFS input, 100 kHz
−80
−66
dB
At −1 dBFS input, 100 kHz
−77
−62
dB
Channel to Channel Crosstalk
At 50 kHz, −3 dBFS input
−94
−89
dB
Interchannel Gain Mismatch
−0.5
0
+0.5
dB
Interchannel Phase Mismatch
0.04
Degrees
DC Offset
−72
dBFS
Power Supply Rejection
Ripple = 100 mV rms on AVDDx at
65
dB
1 kHz
Rev. 0 | Page 5 of 72