AD9240 查看數據表（PDF） - Analog Devices
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AD9240 Datasheet PDF : 25 Pages
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AD9240
SWITCHING SPECIFICATIONS (TMIN to TMAX with AVDD = +5 V, DVDD = +5 V, DRVDD = +5 V, RBIAS = 2 k⍀, CL = 20 pF)
Parameters
Clock Period1
CLOCK Pulsewidth High
CLOCK Pulsewidth Low
Output Delay
Pipeline Delay (Latency)
Symbol
tC
tCH
tCL
tOD
AD9240
100
45
45
8
13
19
3
Units
ns min
ns min
ns min
ns min
ns typ
ns max
Clock Cycles
NOTES
1The clock period may be extended to 1 ms without degradation in specified performance @ +25 °C.
Specifications subject to change without notice.
S1
S2
ANALOG
INPUT
tC
tCH
tCL
S4
S3
INPUT
CLOCK
tOD
THERMAL CHARACTERISTICS
Thermal Resistance
44-Lead MQFP
θJA = 53.2°C/W
θJC = 19°C/W
DATA
OUTPUT
DATA 1
Figure 1. Timing Diagram
ABSOLUTE MAXIMUM RATINGS*
Parameter
With
Respect
to
Min
Max
Units
AVDD
DVDD
AVSS
AVDD
DRVDD
DRVSS
REFCOM
CLK
Digital Outputs
VINA, VINB
VREF
SENSE
CAPB, CAPT
BIAS
Junction Temperature
Storage Temperature
Lead Temperature
(10 sec)
AVSS
DVSS
DVSS
DVDD
DRVSS
AVSS
AVSS
AVSS
DRVSS
AVSS
AVSS
AVSS
AVSS
AVSS
–0.3 +6.5
V
–0.3 +6.5
V
–0.3 +0.3
V
–6.5 +6.5
V
–0.3 +6.5
V
–0.3 +0.3
V
–0.3 +0.3
V
–0.3 AVDD + 0.3 V
–0.3 DRVDD + 0.3 V
–0.3 AVDD + 0.3 V
–0.3 AVDD + 0.3 V
–0.3 AVDD + 0.3 V
–0.3 AVDD + 0.3 V
–0.3 AVDD + 0.3 V
+150
°C
–65 +150
°C
+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.
PIN CONFIGURATION
44 43 42 41 40 39 38 37 36 35 34
DVSS 1
AVSS 2
DVDD 3
AVDD 4
DRVSS 5
DRVDD 6
CLK 7
NC 8
NC 9
NC 10
(LSB) BIT 14 11
PIN 1
IDENTIFIER
AD9240
TOP VIEW
(Not to Scale)
33 REFCOM
32 VREF
31 SENSE
30 NC
29 AVSS
28 AVDD
27 NC
26 NC
25 OTR
24 BIT 1 (MSB)
23 BIT 2
12 13 14 15 16 17 18 19 20 21 22
NC = NO CONNECT
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.
WARNING!
ESD SENSITIVE DEVICE
–4–
REV. B
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