Datasheet

ADAS3023 Data Sheet
Parameter Test Conditions/Comments Min Typ Max Unit
1
Dynamic Range f
IN
= 1 kHz, −60 dB input
PGIA gain = 0.2 91.0 92 dB
PGIA gain = 0.4 90.5 91.5 dB
PGIA gain = 0.8 88.0 89.5 dB
PGIA gain = 1.6
86.0
87.0
dB
Total Harmonic Distortion f
IN
= 1 kHz, all PGIA gains −100 dB
Spurious-Free Dynamic Range f
IN
= 1 kHz, all PGIA gains 105 dB
Channel-to-Channel Crosstalk f
IN
= 1 kHz, all channels inactive 95 dB
DC Common-Mode Rejection Ratio
(CMRR)
All channels
PGIA gain = 0.2
95.0
dB
PGIA gain = 0.4 95.0 dB
PGIA gain = 0.8 95.0 dB
PGIA gain = 1.6 95.0 dB
−3 dB Input Bandwidth −40 dBFS 8 MHz
INTERNAL REFERENCE
REFx Pins
Output Voltage T
A
= 25°C 4.088 4.096 4.104 V
Output Current T
A
= 25°C 250 µA
Temperature Drift REFEN bit = 1 ±5 ppm/°C
REFEN bit = 0, REFIN pin = 2.5V ±1 ppm/°C
Line Regulation
Internal Reference AVDD = 5 V ± 5% 20 μV/V
Buffer Only AVDD = 5 V ± 5% 4 ppm
REFIN Output Voltage
6
T
A
= 25°C
2.495
2.5
2.505
V
Turn-On Settling Time C
REFIN
, C
REF1
, C
REF2
= 10 µF||0.1 µF 100 ms
EXTERNAL REFERENCE REFEN bit = 0
Voltage Range REFx input, REFIN = 0 V 4.000 4.096 4.104 V
REFIN input (buffered) 2.5 2.505 V
Current Drain f
S
= 500 kSPS 100 µA
DIGITAL INPUTS
Logic Levels
V
IL
VIO > 3 V −0.3 +0.3 × VIO V
V
IH
VIO > 3 V 0.7 × VIO VIO + 0.3 V
V
IL
VIO ≤ 3 V −0.3 +0.1 × VIO V
V
IH
VIO ≤ 3 V
0.9 × VIO
VIO + 0.3
V
I
IL
−1 +1 µA
I
IH
−1 +1 µA
DIGITAL OUTPUTS
7
Data Format Twos complement
V
OL
I
SINK
= +500 µA 0.4 V
V
OH
I
SOURCE
= −500 µA VIO − 0.3 V
POWER SUPPLIES
VIO 1.8 AVDD + 0.3 V
AVDD 4.75 5 5.25 V
DVDD 4.75 5 5.25 V
VDDH
VDDH > input voltage + 2.5 V
14.25
15
15.75
V
VSSH VSSH < input voltage − 2.5 V −15.75 −15 −14.25 V
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