Datasheet

AD7988-1/AD7988-5 Data Sheet
Rev. D | Page 4 of 24
VDD = 2.5 V, VIO = 2.3 V to 5.5 V, V
REF
= 5 V, T
A
= –40°C to +125°C, unless otherwise noted.
Table 3.
Parameter Test Conditions/Comments Min Typ Max Unit
REFERENCE
Voltage Range 2.4 5.1 V
Load Current V
REF
= 5 V 250 µA
SAMPLING DYNAMICS
−3 dB Input Bandwidth 10 MHz
Aperture Delay VDD = 2.5 V 2.0 ns
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
Data Format Serial 16 bits straight binary
Pipeline Delay
Conversion results available immediately
after completed conversion
V
OL
I
SINK
= 500 µA 0.4 V
V
OH
I
SOURCE
= −500 µA VIO − 0.3 V
POWER SUPPLIES
VDD 2.375 2.5 2.625 V
VIO Specified performance 2.3 5.5 V
VIO Range 1.8 5.5 V
Standby Current
1, 2
VDD and VIO = 2.5 V, 25°C 0.35 nA
AD7988-1 Power Dissipation
VDD = 2.625 V, V
REF
= 5 V, VIO = 3 V
Total 10 kSPS throughput 70 µW
100 kSPS throughput 700 µW
1 mW
VDD Only 400 µW
REF Only 170 µW
VIO Only
130
µW
AD7988-5 Power Dissipation VDD = 2.625 V, V
REF
= 5 V, VIO = 3 V
Total 500 kSPS throughput 3.5 5 mW
VDD Only 2 mW
REF Only 0.85 mW
VIO Only 0.65 mW
Energy per Conversion 7.0 nJ/sample
TEMPERATURE RANGE
Specified Performance
T
MIN
to T
MAX
−40
+125
°C
1
With all digital inputs forced to VIO or GND as required.
2
During the acquisition phase.