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AD9235BCPZRL7-65 Datasheet PDF : 41 Pages
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AD9235
PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS
Data Sheet
OTR 1
MODE 2
SENSE 3
VREF 4
REFB 5
REFT 6
AVDD 7
AGND 8
VIN+ 9
VIN– 10
AGND 11
AVDD 12
CLK 13
PDWN 14
28 D11 (MSB)
27 D10
26 D9
25 D8
AD9235
TOP VIEW
(Not to Scale)
24 DRVDD
23 DGND
22 D7
21 D6
20 D5
19 D4
18 D3
17 D2
16 D1
15 D0 (LSB)
Figure 3. 28-Lead TSSOP Pin Configuration
DNC 1
CLK 2
DNC 3
PDWN 4
DNC 5
DNC 6
D0 (LSB) 7
D1 8
AD9235
TOP VIEW
(Not to Scale)
24 VREF
23 SENSE
22 MODE
21 OTR
20 D11 (MSB)
19 D10
18 D9
17 D8
NOTES
1. DNC = DO NOT CONNECT.
2. IT IS RECOMMENDED THAT THE EXPOSED PADDLE
BE SOLDERED TO THE GROUND PLANE.
Figure 4. 32-Lead LFCSP Pin Configuration
Table 6. Pin Function Descriptions
Pin No.
Pin No.
28-Lead TSSOP 32-Lead LFCSP Mnemonic
1
21
OTR
2
22
MODE
3
23
SENSE
4
24
VREF
5
25
REFB
6
26
REFT
7, 12
27, 32
AVDD
8, 11
28, 31
AGND
9
29
VIN+
10
30
VIN–
13
2
CLK
14
4
PDWN
15 to 22, 25 to 28 7 to 14, 17 to 20 D0 (LSB) to D11 (MSB)
23
15
DGND
24
16
DRVDD
1, 3, 5, 6
EP
DNC
EPAD
Description
Out-of-Range Indicator.
Data Format and Clock Duty Cycle Stabilizer (DCS) Mode Selection.
Reference Mode Selection.
Voltage Reference Input/Output.
Differential Reference (−).
Differential Reference (+).
Analog Power Supply.
Analog Ground.
Analog Input Pin (+).
Analog Input Pin (−).
Clock Input Pin.
Power-Down Function Selection (Active High).
Data Output Bits.
Digital Output Ground.
Digital Output Driver Supply. Must be decoupled to DGND with a minimum.
0.1 µF capacitor. Recommended decoupling is 0.1 µF in parallel with 10 µF.
Do Not Connect.
Exposed Pad. It is recommended that the exposed paddle be soldered to the
ground plane. There is an increased reliability of the solder joints and maxi-
mum thermal capability of the package is achieved with exposed paddle
soldered to the customer board.
Rev. D | Page 8 of 40
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