Datasheet

AD7321 Data Sheet
Rev. B | Page 6 of 36
B Version
Parameter
1
Min Typ Max Unit Test Conditions/Comments
CONVERSION RATE
Conversion Time 1.6 µs 16 SCLK cycles with SCLK = 10 MHz
Track-and-Hold Acquisition
Time
2, 3
305 ns Full-scale step input; see the Terminology section
Throughput Rate 500 kSPS See the Serial Interface section
POWER REQUIREMENTS Digital inputs = 0 V or V
DRIVE
V
DD
12 16.5 V See Table 6
V
SS
−12 −16.5 V See Table 6
V
CC
2.7 5.25 V See Table 6
V
DRIVE
2.7 5.25 V
Normal Mode (Static) 0.9 mA V
DD
/V
SS
= ±16.5 V, V
CC
/V
DRIVE
= 5.25 V
Normal Mode (Operational)
f
SAMPLE
= 500 kSPS
I
DD
180 µA V
DD
= 16.5 V
I
SS
205 µA V
SS
= −16.5 V
I
CC
and I
DRIVE
2.2 mA V
CC
/V
DRIVE
= 5.25 V
Autostandby Mode
(Dynamic)
f
SAMPLE
= 250 kSPS
I
DD
100 µA V
DD
= 16.5 V
I
SS
110 µA V
SS
= −16.5 V
I
CC
and I
DRIVE
0.75 mA V
CC
/V
DRIVE
= 5.25 V
Autoshutdown Mode (Static) SCLK on or off
I
DD
1 µA V
DD
= 16.5 V
I
SS
1
µA
V
SS
= −16.5 V
I
CC
and I
DRIVE
1 µA V
CC
/V
DRIVE
= 5.25 V
Full Shutdown Mode SCLK on or off
I
DD
1 µA V
DD
= 16.5 V
I
SS
1 µA V
SS
= −16.5 V
I
CC
and I
DRIVE
1 µA V
CC
/V
DRIVE
= 5.25 V
POWER DISSIPATION
Normal Mode (Operational) 18 mW V
DD
= 16.5 V, V
SS
= −16.5 V, V
CC
= 5.25 V
Full Shutdown Mode 38.25 µW V
DD
= 16.5 V, V
SS
= −16.5 V, V
CC
= 5.25 V
1
Temperature range is −40°C to +85°C.
2
See the Terminology section.
3
Sample tested during initial release to ensure compliance.
4
For dc accuracy specifications, the LSB size for differential mode is FSR/8192. For single-ended mode/pseudo differential mode, the LSB size is FSR/4096, unless
otherwise noted. FSR is the theoretical difference between the max and min input values.
5
Unipolar 0 V to 10 V range with straight binary output coding.
6
Bipolar range with twos complement output coding.