Datasheet

AD9240
REV.
–4–
ABSOLUTE MAXIMUM RATINGS*
With
Respect
Parameter to Min Max Units
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
DRVDD DRVSS –0.3 +6.5 V
DRVSS AVSS –0.3 +0.3 V
REFCOM AVSS –0.3 +0.3 V
CLK AVSS –0.3 AVDD
+ 0.3 V
Digital Outputs DRVSS –0.3 DRVDD
+ 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
BIAS 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.
SWITCHING SPECIFICATIONS
Parameters Symbol AD9240 Units
Clock Period
1
t
C
100 ns min
CLOCK Pulsewidth High t
CH
45 ns min
CLOCK Pulsewidth Low t
CL
45 ns min
Output Delay t
OD
8ns min
13 ns typ
19 ns max
Pipeline Delay (Latency) 3 Clock Cycles
NOTES
1
The clock period may be extended to 1 ms without degradation in specified performance @ +25 °C.
Specifications subject to change without notice.
(T
MIN
to T
MAX
with AVDD = +5 V, DVDD = +5 V, DRVDD = +5 V, R
BIAS
= 2 k⍀, C
L
= 20 pF)
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 AD9240 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.
t
CL
t
CH
t
C
t
OD
DATA 1
DATA
OUTPUT
INPUT
CLOCK
ANALOG
INPUT
S1
S2
S3
S4
Figure 1. Timing Diagram
THERMAL CHARACTERISTICS
Thermal Resistance
44-Lead MQFP
θ
JA
= 53.2°C/W
θ
JC
= 19°C/W
PIN CONFIGURATION
3
4
5
6
7
1
2
10
11
8
9
40 39 3841
42
4344 36 35 3437
29
30
31
32
33
27
28
25
26
23
24
PIN 1
IDENTIFIER
TOP VIEW
(Not to Scale)
AD9240
12
13
14 15 16 17 18 19 20 21 22
NC = NO CONNECT
BIT 13
BIT 12
BIT 11
BIT 10
BIT 9
BIT 8
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
DVSS
AVSS
DVDD
AVDD
DRVSS
DRVDD
CLK
NC
NC
NC
(LSB) BIT 14
REFCOM
VREF
SENSE
NC
AVSS
AVDD
NC
NC
OTR
BIT 1 (MSB)
BIT 2
NC
NC
NC
CML
NC
CAPT
CAPB
BIAS
NC
VINB
VINA
WARNING!
ESD SENSITIVE DEVICE
B