Datasheet

AD7946
Rev. A | Page 4 of 24
VDD = 4.5 V to 5.5 V, VIO = 2.3 V to VDD, REF = VDD, T
A
= −40°C to +85°C, unless otherwise noted.
Table 3.
Parameter Conditions Min Typ Max Unit
REFERENCE
Voltage Range 0.5 VDD + 0.3 V
Load Current 500 kSPS, REF = 5 V 100 μA
SAMPLING DYNAMICS
−3 dB Input Bandwidth 9 MHz
Aperture Delay VDD = 5 V 2.5 ns
DIGITAL INPUTS
Logic Levels
V
IL
−0.3 0.3 × VIO V
V
IH
0.7 × VIO VIO + 0.3 V
I
IL
−1 +1 μA
I
IH
−1 +1 μA
DIGITAL OUTPUTS
Data Format Serial 14-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 Specified performance 4.5 5.5 V
VIO Specified performance 2.3 VDD + 0.3 V
VIO Range 1.8 VDD + 0.3 V
Standby Current
1, 2
VDD and VIO = 5 V, 25°C 1 50 nA
Power Dissipation VDD = 5 V, 100 SPS throughput 3.3 μW
VDD = 5 V, 100 kSPS throughput 3.3 3.8 mW
VDD = 5 V, 500 kSPS throughput 19 mW
TEMPERATURE RANGE
3
Specified Performance T
MIN
to T
MAX
−40 +85 °C
1
With all digital inputs forced to VIO or GND as required.
2
During acquisition phase.
3
Contact sales for extended the temperature range.