AD9244-EVAL Analog Devices, AD9244-EVAL Datasheet - Page 6

• Manufacturer Part Number: AD9244-EVAL
• Description: 14-Bit/ 40/65 MSPS Monolithic A/D Converter
• Manufacturer: Analog Devices

AD9244–SPECIFICATIONS
Pin
Nunber
1,2,5,32,33
3,4,31,34
5
8,44
7,6
9
10
11-13,16-21
24-26
27
14,22,30
15,23,29
28
35
36
37
38
39,40,41,42 REFT,REFB
43
45
46,47
48
REV. PrD 01/22/02
PIN FUNCTION DESCRIPTIONS
Name
AGND
AVDD
C L K G N D
N C
O E B
DB0 (LSB)
DB1 - DB12
DB13 (MSB)
DRGND
DRVDD
O T R
D F S
REFSENSE
VREF
R E F G N D
DUTY
C M L
VIN+,VIN-
VR
DB0 (LSB)
AGND
AGND
AVDD
AVDD
AGND
CLK+
Descriptions
Analog Ground
Analog Supply Voltage
Clock Ground
Do not connect
CLK+,CLK- Differential Clock Input
Digital Output Enable (active low)
Least Significant Bit, digital output
Digital outputs
Most Significant Bit, digital output
Digital Ground
Digital Supply Voltage
Out of range indicator (logic 1 indicates OTR)
Data Format Select, connect to;
Internal reference control
Internal Reference
Reference ground
Internal ADC reference decoupling
50% Duty Cycle Restore, (Connect to AVDD to activate 50% duty cycle restore, de-
couple to AGND for external control of both clock edges.)
Common mode reference
Differential analog inputs
Internal Bias Decoupling
CLK-
OEB
DB1
DB2
NC
10
11
12
1
2
3
4
5
6
7
8
9
48
13 14 15 16 17 18 19 20 21 22 23 24
(Pr elim inar y and not to scale)
47
46
45
44
48 LQFP
AD9244
43
– 6 –
DRGND for straight binary
DRVDD for 2’s complement
(0.5*AVDD)
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
REF SENSE
DFS
AVDD
AGND
AGND
AVDD
DRGND
DRVDD
OTR
DB13 (MSB)
DB12
DB11