Datasheet
AD9480
Rev. A | Page 8 of 28
PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
1
2
3
4
5
6
7
8
9
10
11
12
CLK–
AVDD
AGND
D0_C (LSB)
DRGND
DRVDD
CLK+
D0_T (LSB)
D1_C
D1_T
D2_C
33
32
31
30
29
28
27
26
25
24
23
AGND
AVDD
AGND
DRGND
S1
PDWN
SENSE
D7_T (MSB)
D7_C (MSB)
D6_T
D6_C
D2_T
13
D3_C
14
D3_T
15
DRGND
16
DCO–
17
DCO+
18
DRVDD
19
D4_C
20
D4_T
21
D5_C
22
D5_T
PIN 1
NC = NO CONNECT
44
AGND
43
NC
42
LVDSBIAS
41
AVDD
40
AGND
39
VIN+
38
VIN–
37
AGND
36
AVDD
35
AGND
34
VREF
AD9480
TOP VIEW
(Not to Scale)
04619-003
Figure 3. Pin Configuration
Table 7. Pin Function Descriptions
Pin
No. Mnemonic Description
Pin
No. Mnemonic Description
1 CLK+ Input Clock—True 23 D6_C Data Output Bit 6—Complement
2 CLK− Input Clock—Complement 24 D6_T Data Output Bit 6—True
3 AVDD 3.3 V Analog Supply 25 D7_C Data Output Bit 7—Complement (MSB)
4 AGND Analog Ground 26 D7_T Data Output Bit 7—True (MSB)
5 DRVDD 3.3 V Digital Output Supply 27 DRGND Digital Ground
6 DRGND Digital Ground 28 S1
Data Format Select and Duty-Cycle Stabilizer Selection
(See Table 8)
7 D0_C Data Output Bit 0—Complement (LSB) 29 PDWN Power-Down Selection (AVDD = Power Down)
8 D0_T Data Output Bit 0—True (LSB) 30 AGND Analog Ground
9 D1_C Data Output Bit 1—Complement 31 AVDD 3.3 V Analog Supply
10 D1_T Data Output Bit 1—True 32 AGND Analog Ground
11 D2_C Data Output Bit 2—Complement 33 SENSE Reference Mode Selection (See Table 9)
12 D2_T Data Output Bit 2—True 34 VREF Voltage Reference Input/Output
13 D3_C Data Output Bit 3—Complement 35 AGND Analog Ground
14 D3_T Data Output Bit 3—True 36 AVDD 3.3 V Analog Supply
15 DRGND Digital Ground 37 AGND Analog Ground
16 DCO− Data Clock Output—Complement 38 VIN− Analog Input—Complement
17 DCO+ Data Clock Output—True 39 VIN+ Analog Input—True
18 DRVDD 3.3 V Digital Output Supply 40 AGND Analog Ground
19 D4_C Data Output Bit 4—Complement 41 AVDD 3.3 V Analog Supply
20 D4_T Data Output Bit 4—True 42 LVDSBIAS LVDS Output Current Adjust
21 D5_C Data Output Bit 5—Complement 43 NC
1
No Connect (Leave Floating)
22 D5_T Data Output Bit 5—True 44 AGND Analog Ground
1
Pin 43 will self-bias to 1.5 V. It can be left floating (as recommended) or tied to AVDD or ground with no ill effects.