Datasheet

AD7691 Data Sheet
Rev. C | Page 4 of 28
VDD = 2.3 V to 5.25 V, VIO = 2.3 V to VDD, V
REF
= VDD, all specifications T
MIN
to T
MAX
, unless otherwise noted.
Table 3.
Parameter Conditions/Comments Min Typ Max Unit
REFERENCE
Voltage Range 0.5 VDD + 0.3 V
Load Current 250 kSPS, REF = 5 V 60 µA
SAMPLING DYNAMICS
−3 dB Input Bandwidth 2 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 18-bit, twos complement
Pipeline Delay
1
V
OL
I
SINK
= +500 µA 0.4 V
V
OH
I
SOURCE
= −500 µA VIO − 0.3 V
POWER SUPPLIES
VDD Specified performance 2.3 5.25 V
VIO Specified performance 2.3 VDD + 0.3 V
VIO Range 1.8 VDD + 0.3 V
Standby Current
2, 3
VDD and VIO = 5 V, T
A
= 25°C 1 50 nA
Power Dissipation VDD = 2.5 V, 100 SPS throughput 1.4 µW
VDD = 2.5 V, 100 kSPS throughput 1.35 mW
VDD = 2.5 V, 180 kSPS throughput 2.4 mW
VDD = 5 V, 100 kSPS throughput 4.24 5 mW
VDD = 5 V, 250 kSPS throughput 10.6 12.5 mW
Energy per Conversion 50 nJ/sample
TEMPERATURE RANGE
4
Specified Performance T
MIN
to T
MAX
−40 +85 °C
1
Conversion results are available immediately after completed conversion.
2
With all digital inputs forced to VIO or GND as required.
3
During acquisition phase.
4
Contact an Analog Devices, Inc., sales representative for the extended temperature range.