AD9221/AD9223/AD9220
SWITCHING SPECIFICATIONS
Parameter
Clock Period*
CLOCK Pulsewidth High
CLOCK Pulsewidth Low
Output Delay
(T
MIN
to T
MAX
with AVDD = 5 V, DVDD = 5 V, C
L
= 20 pF)
AD9221
667
300
300
8
13
19
3
AD9223
333
150
150
8
13
19
3
AD9220
100
45
45
8
13
19
3
Unit
ns min
ns min
ns min
ns min
ns typ
ns max
Clock Cycles
Symbol
t
C
t
CH
t
CL
t
OD
Pipeline Delay (Latency)
Specifications subject to change without notice.
*The
clock period may be extended to 1 ms without degradation in specified performance @ 25
°C.
S1
ANALOG
INPUT
S2
t
C
t
CH
t
CL
S4
S3
INPUT
CLOCK
t
OD
DATA
OUTPUT
DATA 1
Figure 1. Timing Diagram
ABSOLUTE MAXIMUM RATINGS*
THERMAL CHARACTERISTICS
Parameter
AVDD
DVDD
AVSS
AVDD
REFCOM
CLK
Digital Outputs
VINA, VINB
VREF
SENSE
CAPB, CAPT
Junction Temperature
Storage Temperature
Lead Temperature
(10 sec)
With
Respect
to
AVSS
DVSS
DVSS
DVDD
AVSS
AVSS
DVSS
AVSS
AVSS
AVSS
AVSS
Min
–0.3
–0.3
–0.3
–6.5
–0.3
–0.3
–0.3
–0.3
–0.3
–0.3
–0.3
–65
Max
+6.5
+6.5
+0.3
+6.5
+0.3
AVDD + 0.3
DVDD + 0.3
AVDD + 0.3
AVDD + 0.3
AVDD + 0.3
AVDD + 0.3
150
+150
300
Unit
V
V
V
V
V
V
V
V
V
V
V
°C
°C
°C
Thermal Resistance
28-Lead SOIC
JA
= 71.4°C/W
JC
= 23°C/W
28-Lead SSOP
JA
= 63.3°C/W
JC
= 23°C/W
ORDERING GUIDE
Model
AD9221AR
AD9223AR
AD9220AR
AD9221ARS
AD9223ARS
AD9220ARS
AD9221-EB
AD9223-EB
AD9220-EB
Temperature
Range
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
Package
Description
28-Lead SOIC
28-Lead SOIC
28-Lead SOIC
28-Lead SSOP
28-Lead SSOP
28-Lead SSOP
Evaluation Board
Evaluation Board
Evaluation Board
Package
Option
R-28
R-28
R-28
RS-28
RS-28
RS-28
*Stresses
above those listed under Absolute Maximum Ratings may cause perma-
nent damage to the device. This is a stress rating only; functional operation of the
device at these or any other conditions above those indicated in the operational
sections of this specification is not implied. Exposure to absolute maximum ratings
for extended periods may effect device reliability.
CAUTION
ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily
accumulate on the human body and test equipment and can discharge without detection. Although the
AD9221/AD9223/AD9220 features proprietary ESD protection circuitry, permanent damage may
occur on devices subjected to high energy electrostatic discharges. Therefore, proper ESD precautions
are recommended to avoid performance degradation or loss of functionality.
–4–
REV. E
AD [ ANALOG DEVICES ]
