Block diagram and pin description

LPY450AL

4/14

Doc ID 16580 Rev 1

Table 2.

Pin description

Pin #

Pin name

Analog function

1

OUT Z

Z rate signal output voltage (not amplified)

2

NC

Internally not connected

3

NC

Internally not connected

4

NC

Internally not connected

5

4xIN Z

Input of 4x amplifier

6

NC

Internally not connected

7

4xOUTZ

Z rate signal output voltage (amplified)

8

NC

Internally not connected

9

Vdd

Power supply

10

NC

Internally not connected

11

NC

Internally not connected

12

NC

Internally not connected

13

NC

Internally not connected

14

4xOUTX

X rate signal output voltage (amplified)

15

NC

Internally not connected

16

4xIN X

Input of 4x amplifier

17

VCONT

PLL filter connection pin #17

18

FILTVDD

PLL filter connection pin #18

19

Vdd

Reserved. connect to Vdd

20

OUTX

X rate signal output voltage (not amplified)

21

NC

Internally not connected

22

Vref

Reference voltage

23

NC

Internally not connected

24

HP

High-pass filter reset (logic 0: normal operation mode;

logic1: external high-pass filter is reset)

25

Res

Reserved. Leave unonnected or connect to Vdd

26

GND

0V supply voltage

27

ST

Self-test (see

Table 6)

28

SLEEP/PD

Sleep mode / power-down mode (see

Table 6)