AD9243 Analog Devices, AD9243 Datasheet - Page 4

• Manufacturer Part Number: AD9243
• Description: Complete 14-Bit, 3 MSPS Monolithic A/D Converter
• Manufacturer: Analog Devices

Specifications of AD9243

• Resolution (bits): 14bit
• # Chan: 1
• Sample Rate: 3MSPS
• Interface: Par
• Analog Input Type: Diff-Uni,SE-Uni
• Ain Range: (2Vref) p-p,2 V p-p,5V p-p,Uni (Vref) x 2,Uni 2.0V,Uni 5.0V
• Adc Architecture: Pipelined
• Pkg Type: QFP

AD9243
ABSOLUTE MAXIMUM RATINGS*
Parameter
AVDD
DVDD
AVSS
AVDD
DRVDD
DRVSS
REFCOM
CLK
Digital Outputs
VINA, VINB
VREF
SENSE
CAPB, CAPT
Junction Temperature
Storage Temperature
Lead Temperature
*Stresses above those listed under Absolute Maximum Ratings may cause perma-
SWITCHING SPECIFICATIONS
Parameters
Clock Period
CLOCK Pulsewidth High
CLOCK Pulsewidth Low
Output Delay
Pipeline Delay (Latency)
NOTES
1
Specifications subject to change without notice.
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 AD9243 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.
The clock period may be extended to 1 ms without degradation in specified performance @ +25 C.
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.
ANALOG
OUTPUT
(10 sec)
CLOCK
INPUT
INPUT
DATA
1
S1
t
CH
Figure 1. Timing Diagram
t
C
t
CL
With
Respect
AVSS
DVSS
DVDD
AVSS
AVSS
DVSS
AVSS
AVSS
to
DVSS
DRVSS
DRVSS
AVSS
AVSS
S2
Min Max
–0.3
–0.3
–0.3
–6.5
–0.3
–0.3
–0.3
–0.3
–0.3
–0.3
–0.3
–0.3
–0.3
–65
S3
+6.5
+6.5
+0.3
+6.5
+6.5
+0.3
+0.3
DVDD + 0.3
AVDD + 0.3
AVDD + 0.3
AVDD + 0.3
AVDD + 0.3
DRVDD + 0.3 V
+150
+150
+300
(T
MIN
Symbol
t
t
t
t
C
CH
CL
OD
S4
to T
t
OD
MAX
DATA 1
with AVDD = +5 V, DVDD = +5 V, DRVDD = +5 V, C
Units
V
V
V
V
V
V
V
V
V
V
V
V
C
C
C
–4–
THERMAL CHARACTERISTICS
Thermal Resistance
44-Lead MQFP
Model
AD9243AS
AD9243EB
*S = Metric Quad Flatpack.
(LSB) BIT 14
JA
JC
NC = NO CONNECT
= 53.2 C/W
= 19 C/W
DRVDD
DRVSS
DVDD
AVDD
DVSS
AVSS
CLK
NC
NC
NC
10
11
6
1
2
3
4
5
7
8
9
Temperature
Range
–40 C to +85 C
Evaluation Board
AD9243
333
150
150
8
13
19
3
12 13 14 15 16 17 18 19 20 21 22
44
PIN 1
IDENTIFIER
43
PIN CONNECTIONS
ORDERING GUIDE
42
41
(Not to Scale)
40 39 38
AD9243
TOP VIEW
WARNING!
L
Package
Description
44-Lead MQFP
= 20 pF)
37
36 35 34
ESD SENSITIVE DEVICE
Units
ns min
ns min
ns min
ns min
ns typ
ns max
Clock Cycles
33
32
31
30
29
28
27
26
25
24
23
REFCOM
VREF
SENSE
NC
AVSS
AVDD
NC
NC
OTR
BIT 1 (MSB)
BIT 2
Package
Option*
S-44
REV. A