AD7908/AD7918/AD7928
Parameter
LOGIC OUTPUTS
Output High Voltage, VOH
Output Low Voltage, VOL
Floating-State Leakage Current
Floating-State Output Capacitance3
Output Coding
CONVERSION RATE
Conversion Time
Track-and-Hold Acquisition Time
Throughput Rate
POWER REQUIREMENTS
AVDD
VDRIVE
IDD4
Normal Mode (Static)
Normal Mode (Operational)
Using Auto Shutdown Mode
Full Shutdown Mode
Power Dissipation4
Normal Mode (Operational)
Auto Shutdown Mode (Static)
Full Shutdown Mode
B Version1
Unit
VDRIVE − 0.2
V min
0.4
V max
±1
μA max
10
pF max
Straight (natural) binary
Twos complement
800
ns max
300
ns max
300
ns max
1
MSPS max
2.7/5.25
2.7/5.25
V min/max
V min/max
600
μA typ
2.7
mA max
2
mA max
960
μA typ
0.5
μA max
0.5
μA max
13.5
mW max
6
mW max
2.5
μW max
1.5
μW max
2.5
μW max
1.5
μW max
1 Temperature ranges as follows: B version: −40°C to +85°C.
2 See Terminology section.
3 Sample tested @ 25°C to ensure compliance.
4 See Power vs. Throughput Rate section.
Data Sheet
Test Conditions/Comments
ISOURCE = 200 μA, AVDD = 2.7 V to 5.25 V
ISINK = 200 μA
Coding bit set to 1
Coding bit set to 0
16 SCLK cycles with SCLK at 20 MHz
Sine wave input
Full-scale step input
See Serial Interface section
Digital inputs = 0 V or VDRIVE
AVDD = 2.7 V to 5.25 V, SCLK On or Off
AVDD = 4.75 V to 5.25 V, fSCLK = 20 MHz
AVDD = 2.7 V to 3.6 V, fSCLK = 20 MHz
fSAMPLE = 250 kSPS
(Static)
SCLK on or off (20 nA typ)
AVDD = 5 V, fSCLK = 20 MHz
AVDD = 3 V, fSCLK = 20 MHz
AVDD = 5 V
AVDD = 3 V
AVDD = 5 V
AVDD = 3 V
Rev. E | Page 4 of 28