Datasheet

REV. E–4–
AD9221/AD9223/AD9220
SWITCHING SPECIFICATIONS
(T
MIN
to T
MAX
with AVDD = 5 V, DVDD = 5 V, C
L
= 20 pF)
Parameter Symbol AD9221 AD9223 AD9220 Unit
Clock Period* t
C
667 333 100 ns min
CLOCK Pulsewidth High t
CH
300 150 45 ns min
CLOCK Pulsewidth Low t
CL
300 150 45 ns min
Output Delay t
OD
888ns min
13 13 13 ns typ
19 19 19 ns max
Pipeline Delay (Latency) 333Clock Cycles
*The clock period may be extended to 1 ms without degradation in specified performance @ 25 °C.
Specifications subject to change without notice.
t
CL
t
CH
t
C
t
OD
DATA 1
DATA
OUTPUT
INPUT
CLOCK
ANALOG
INPUT
S1
S2
S3
S4
Figure 1. Timing Diagram
ABSOLUTE MAXIMUM RATINGS*
With
Respect
Parameter to Min Max Unit
AVDD AVSS –0.3 +6.5 V
DVDD DVSS –0.3 +6.5 V
AVSS DVSS –0.3 +0.3 V
AVDD DVDD –6.5 +6.5 V
REFCOM AVSS –0.3 +0.3 V
CLK AVSS –0.3 AVDD + 0.3 V
Digital Outputs DVSS –0.3 DVDD + 0.3 V
VINA, VINB AVSS –0.3 AVDD + 0.3 V
VREF AVSS –0.3 AVDD + 0.3 V
SENSE AVSS –0.3 AVDD + 0.3 V
CAPB, CAPT AVSS –0.3 AVDD + 0.3 V
Junction Temperature 150 °C
Storage Temperature –65 +150 °C
Lead Temperature
(10 sec) 300 °C
*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.
THERMAL CHARACTERISTICS
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
Temperature Package Package
Model Range Description Option
AD9221AR –40°C to +85°C 28-Lead SOIC R-28
AD9223AR –40°C to +85°C 28-Lead SOIC R-28
AD9220AR –40°C to +85°C 28-Lead SOIC R-28
AD9221ARS –40°C to +85°C 28-Lead SSOP RS-28
AD9223ARS –40°C to +85°C 28-Lead SSOP RS-28
AD9220ARS –40°C to +85°C 28-Lead SSOP RS-28
AD9221-EB Evaluation Board
AD9223-EB Evaluation Board
AD9220-EB Evaluation Board
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.