AD7911/AD7921
Rev. A | Page 4 of 28
Parameter A Grade
1
Unit Test Conditions/Comments
CONVERSION RATE
Conversion Time 2.8 μs max 14 SCLK cycles with SCLK at 5 MHz
Track-and-Hold Acquisition Time
2
290 ns max
Throughput Rate 250 kSPS max
POWER REQUIREMENTS
V
DD
2.35/5.25 V min/max
I
DD
Digital I/Ps = 0 V or V
DD
Normal Mode (Static) 3 mA typ V
DD
= 4.75 V to 5.25 V, SCLK on or off
1.5 mA typ V
DD
= 2.35 V to 3.6 V, SCLK on or off
Normal Mode (Operational) 4 mA max V
DD
= 4.75 V to 5.25 V, f
SAMPLE
= 250 kSPS
2 mA max V
DD
= 2.35 V to 3.6 V, f
SAMPLE
= 250 kSPS
Full Power-Down Mode (Static) 1 μA max SCLK on or off, typically 50 nA
Full Power-Down Mode (Dynamic) 0.38 mA typ V
DD
= 5 V, f
SCLK
= 5 MHz, f
SAMPLE
= 25 kSPS
0.2 mA typ V
DD
= 3 V, f
SCLK
= 5 MHz, f
SAMPLE
= 25 kSPS
Power Dissipation
4
Normal Mode (Operational) 20 mW max V
DD
= 5 V, f
SAMPLE
= 250 kSPS
6 mW max V
DD
= 3 V, f
SAMPLE
= 250 kSPS
Full Power-Down 5 μW max V
DD
= 5 V
1
Operational from V
DD
= 2 V, with V
IH
= 1.9 V minimum and V
IL
= 0.1 V maximum.
2
See the Terminology section.
3
Guaranteed by characterization.
4
See the Power vs. Throughput Rate section.
