Datasheet
REV. B
AD9226
–6–
48-PIN FUNCTION DESCRIPTIONS
Pin
Number Name Description
1, 2, 32, 33 AVSS Analog Ground
3, 4, 31, 34 AVDD 5 V Analog Supply
5, 6, 8, 10, NC No Connect
11, 44
7 CLK Clock Input Pin
9 OEB Output Enable (Active Low)
12 BIT 12 Least Significant Data Bit (LSB)
13 BIT 11 Data Output Bit
14, 22, 30 DRVSS Digital Output Driver Ground
15, 23, 29 DRVDD 3 V to 5 V Digital Output
Driver Supply
16–21, BITS 10–5, Data Output Bits
24–26 BITS 4–2
27 BIT 1 Most Significant Data Bit (MSB)
28 OTR Out of Range
35 MODE2 Data Format Select
36 SENSE Reference Select
37 VREF Reference In/Out
38 REFCOM Reference Common
(AVSS)
39, 40 CAPB Noise Reduction Pin
41, 42 CAPT Noise Reduction Pin
43 MODE1 Clock Stabilizer
45 CM LEVEL Midsupply Reference
46 VINA Analog Input Pin (+)
47 VINB Analog Input Pin (–)
48 VR Noise Reduction Pin
PIN CONNECTION
28-Lead SSOP
TOP VIEW
(Not to Scale)
28
27
26
25
24
23
22
21
20
19
18
17
16
15
1
2
3
4
5
6
7
8
9
10
11
12
13
14
AD9226
OTR
(MSB) BIT 1
BIT 2
BIT 3
BIT 4
BIT 5
BIT 6
CLK
(LSB) BIT 12
BIT 11
BIT 10
BIT 7
BIT 8
BIT 9
AVDD
AVSS
SENSE
VREF
REFCOM (AVSS)
CAPB
CAPT
DRVDD
DRVSS
AVDD
AVSS
MODE
VINA
VINB
PIN CONNECTION
48-Lead LQFP
36
35
34
33
32
31
30
29
28
27
26
25
13 14 15 16 17 18 19 20 21 22 23 24
1
2
3
4
5
6
7
8
9
10
11
12
48 47 46 45 44 39 38 3743 42 41 40
PIN 1
IDENTIFIER
TOP VIEW
(Not to Scale)
SENSE
MODE2
AVDD
AVSS
AVSS
AVDD
DRVSS
AVSS
AVSS
AVDD
AVDD
NC
NC
CLK
NC = NO CONNECT
NC
OEB
NC
NC
DRVDD
OTR
BIT 1 (MSB)
BIT 2
AD9226
(LSB) BIT 12
BIT 3
VR
VINB
VINA
CM LEVEL
NC
MODE1
CAPT
CAPT
CAPB
CAPB
REF COM (AVSS)
VREF
BIT 11
DRVSS
DRVDD
BIT 10
BIT 9
BIT 8
BIT 7
BIT 6
BIT 5
DRVSS
DRVDD
BIT 4
28-PIN FUNCTION DESCRIPTIONS
Pin
Number Name Description
1 CLK Clock Input Pin
2 BIT 12 Least Significant Data Bit (LSB)
3–12 BITS 11–2 Data Output Bits
13 BIT 1 Most Significant Data Bit (MSB)
14 OTR Out of Range
15, 26 AVDD 5 V Analog Supply
16, 25 AVSS Analog Ground
17 SENSE Reference Select
18 VREF Input Span Select (Reference I/O)
19 REFCOM Reference Common
(AVSS)
20 CAPB Noise Reduction Pin
21 CAPT Noise Reduction Pin
22 MODE Data Format Select/Clock Stabilizer
23 VINA Analog Input Pin (+)
24 VINB Analog Input Pin (–)
27 DRVSS Digital Output Driver Ground
28 DRVDD 3 V to 5 V Digital Output
Driver Supply