AD9822
ABSOLUTE MAXIMUM RATINGS*
PIN FUNCTION DESCRIPTIONS
With
Respect
To
Pin
N
o. Name
Type
Description
Parameter
Min Max
Unit
1
CDSCLK1
DI
CDS Reference Level Sampling
Clock
VIN, CAPT, CAPB
Digital Inputs
AVDD
DRVDD
AVSS
Digital Outputs
Junction Temperature
Storage Temperature
Lead Temperature
(10 sec)
AVSS
AVSS
AVSS
DRVSS
DRVSS
DRVSS
–0.3 AVDD + 0.3
–0.3 AVDD + 0.3
–0.5 +6.5
–0.5 +6.5
–0.3 +0.3
V
V
V
V
V
V
2
3
4
5
6
7
CDSCLK2
ADCCLK
OEB
DI
DI
DI
P
CDS Data Level Sampling Clock
A/D Converter Sampling Clock
Output Enable, Active Low
–0.3 DRVDD + 0.3
150
DRVDD
DRVSS
D7
Digital Output Driver Supply
Digital Output Driver Ground
°
°
C
C
P
–65
+150
DO
Data Output MSB. ADC DB13
High Byte, ADC DB5 Low Byte
300
°C
8
D6
D5
D4
D3
D2
D1
D0
DO
DO
DO
DO
DO
DO
DO
Data Output. ADC DB12 High
Byte, ADC DB4 Low Byte
*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 other conditions above those indicated in the operational
sections of this specification is not implied. Exposure to absolute maximum ratings
for extended periods may affect device reliability.
9
Data Output. ADC DB11 High
Byte, ADC DB3 Low Byte
10
11
12
13
14
Data Output. ADC DB10 High
Byte, ADC DB2 Low Byte
ORDERING GUIDE
Data Output. ADC DB9 High
Byte, ADC DB1 Low Byte
Temperature
Range
Package
Description
Model
Data Output. ADC DB8 High
Byte, ADC DB0 Low Byte
AD9822JR
AD9822JRS
0°C to 70°C
0°C to 70°C
28-Lead 300 Mil SOIC
28-Lead 5.3 mm SSOP
Data Output. ADC DB7 High
Byte, Don’t Care Low Byte
Data Output LSB. ADC DB6
High Byte, Don’t Care Low Byte
THERMAL CHARACTERISTICS
Thermal Resistance
28-Lead 300 Mil SOIC
θJA = 71.4°C/W
15
16
17
18
19
20
SDATA
SCLK
SLOAD
AVDD
AVSS
DI/DO
DI
Serial Interface Data Input/Output
Serial Interface Clock Input
Serial Interface Load Pulse
5 V Analog Supply
28-Lead 5.3 mm SSOP
θJA = 109°C/W
θJC = 39°C/W
DI
θJC = 23°C/W
P
PIN CONFIGURATION
P
Analog Ground
CAPB
AO
ADC Bottom Reference Voltage
Decoupling
1
2
CDSCLK1
CDSCLK2
ADCCLK
OEB
28 AVDD
27 AVSS
26 VINR
21
CAPT
AO
ADC Top Reference Voltage
Decoupling
3
4
25 OFFSET
24 VING
23 CML
22
23
24
25
26
27
28
VINB
AI
AO
AI
AO
AI
P
Analog Input, Blue Channel
Internal Bias Level Decoupling
Analog Input, Green Channel
Clamp Bias Level Decoupling
Analog Input, Red Channel
Analog Ground
5
DRVDD
DRVSS
(MSB) D7
D6
CML
6
AD9822
TOP VIEW
VING
OFFSET
VINR
AVSS
7
22 VINB
(Not to Scale)
8
21 CAPT
20 CAPB
19 AVSS
18 AVDD
17 SLOAD
16 SCLK
15 SDATA
9
D5
10
11
12
13
14
D4
D3
AVDD
P
5 V Analog Supply
D2
D1
TYPE: AI = Analog Input, AO = Analog Output, DI = Digital Input, DO =
Digital Output, P = Power.
(LSB) D0
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 AD9822 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.
WARNING!
ESD SENSITIVE DEVICE
–4–
REV. A