AD2S105

REV. 0

–4–

PIN DESIGNATIONS

1, 2, 3

Pin

Mnemonic

Description

3

STROBE

Begin Conversion

Positive Power Supply

Negative Power Supply

6

PH/OP4

Sin (

θ + φ)

7

PH/OP1

Cos (

θ + φ)

10

AGND

Analog Ground

11

PH/IP4

Sin

θ Input

12

PH/IPH3

High Level Cos

(

θ + 240°) Input

13

PH/IP3

Cos (

θ + 240°) Input

14

PH/IPH2

High Level Cos

(

θ + 120°) Input

15

PH/IP2

Cos (

θ + 120°) Input

16

PH/IPH1

High Level Cos

θ Input

17

PH/IP1

Cos

(θ) Input

19

Negative Power Supply

20

HPREF

Homopolar Reference

21

HPOP

Homopolar Output

22

HPFILT

Homopolar Filter

23

CONV1

Select Analog Input

Format

24

CONV2

Select Analog Input

Format

25

COS

Cos Output

26

SIN

Sin Output

27–38

DB12 to DB1

(DB1 = MSB, DB12 =

LSB Parallel Input Data)

41

Positive Power Supply

42

DGND

Digital Ground

44

BUSY

Internal Logic Setup

Time

NOTES

° orthogonal signals = Sin θ, Cos θ (Resolver) = PH/IP4 and PH/IP1.

°, three-wire signals = Cos θ, Cos (θ + 120°), Cos (θ + 240°).

= PH/IP1, PH/IP2, PH/IP3

High Level = PH/IPH1, PH/IPH2, PH/IPH3.

°, two-wire signals = Cos (θ + 120°), Cos (θ + 240°) =

PH/IP2, PH/IP3.

In all cases where any of the input Pins 11 through 17 are not used, they must

be left unconnected.

PIN CONFIGURATION

6

5

4

3

2

1

44

43

42

41

40

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

37

38

39

NC = NO CONNECT.

TOP VIEW

(NOT TO SCALE)

AD2S105

7

8

11

12

13

14

15

16

17

9

10

NC

DB1

DB2

DB3

DB4

DB5

DB6

DB7

DB8

DB9

DB10

PH/OP1

NC

NC

AGND

PH/IP4

PH/IPH3

PH/IP3

PH/IPH2

PH/IP2

PH/IPH1

PH/IP1