Datasheet

AD7457
Rev. A | Page 4 of 20
Parameter Test Conditions/Comments B Version
1
Unit
POWER REQUIREMENTS
V
DD
2.7/5.25 V min/max
I
DD
7, 8
During Conversion
6
V
DD
= 4.75 V to 5.25 V 1.5 mA max
V
DD
= 2.7 V to 3.6 V 1.2 mA max
Normal Mode (Static) SCLK on or off 0.5 mA typ
Normal Mode (Operational) V
DD
= 4.75 V to 5.25 V 0.7 mA max
V
DD
= 2.7 V to 3.6 V 0.33 mA max
Power-Down SCLK on or off 1 µA max
Power Dissipation
Normal Mode (Operational) V
DD
= 5 V 3 mW max
V
DD
= 3 V 0.9 mW max
Power-Down V
DD
= 5 V; SCLK on or off 5 µW max
V
DD
= 3 V; SCLK on or off 3 µW max
1
Temperature range for B version: −40°C to +85°C.
2
See the section. Terminology
3
Analog inputs with slew rates exceeding 27 V/µs (full-scale input sine wave > 3.5 MHz) within the acquisition time may cause an incorrect result to be returned by the
converter.
4
A dc input is applied to V
IN–
to provide a pseudo ground for V
IN+
.
5
The AD7457 is functional with a reference input range of 100 mV to V
DD
.
6
Guaranteed by characterization.
7
See the section. Power Consumption
8
Measured with a full-scale dc input.