Copyright © 2004, ZMD AG, Rev. 0.7, 2004-09-02, PRELIMINARY

9/20

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ZMD31050

Advanced Differential Sensor Signal Conditioner

Datasheet

PRELIMINARY

1.5

Output Stage

Used serial IF

Used I/O pins

No.

I

SPI

OUT

IO1

IO2

SDA

1

X

Data I/O

2

X

ALARM1

Data I/O

3

X

ALARM2

Data I/O

4

X

ALARM1

ALARM2

Data I/O

5

X

PWM1

Data I/O

6

X

PWM1

ALARM2

Data I/O

7

X

Analog

Data I/O

8

X

Analog

ALARM1

Data I/O

9

X

Analog

ALARM2

Data I/O

10

X

Analog

ALARM1

ALARM2

Data I/O

11

X

Analog

PWM1

Data I/O

12

X

Analog

PWM1

ALARM2

Data I/O

13

X

PWM2

Data I/O

14

X

PWM2

ALARM1

Data I/O

15

X

PWM2

ALARM2

Data I/O

16

X

PWM2

ALARM1

ALARM2

Data I/O

17

X

PWM2

PWM1

Data I/O

18

X

PWM2

PWM1

ALARM2

Data I/O

19

X

Data out

Slave select

Data in

20

X

Data out

ALARM1

Slave select

-

Data in

-

21

X

Data out

PWM1

Slave select

-

Data in

-

22

X

Analog

Data out

Slave select

Data in

23

X

Analog

Data out

ALARM1

Slave select

-

Data in

-

24

X

Analog

Data out

PWM1

Slave select

-

Data in

-

25

X

PWM2

Data out

Slave select

Data in

26

X

PWM2

Data out

ALARM1

Slave select

-

Data in

-

27

X

PWM2

Data out

PWM1

Slave select

-

Data in

-

Table 3: Output configurations overview

The ZMD31050 provides the following I/O

pins: OUT, IO1, IO2 and SDA.

Via these pins the following signal formats

can be output: Analog (voltage/current),

PWM, Data (SPI/I

The following values can be provided at the

O/I pins: bridge sensor signal, temperature

signal 1, temperature signal 2, alarm.

Note:

The Alarm signal only refers to the bridge

sensor signal, but never to a temperature

signal.

Due to the necessary pin sharing there are

restrictions to the possible combinations of

outputs and interface connections.

The table beside gives an overview about

possible combinations.

Note:

In the SPI mode the pin IO2 is used as

Slave select. Thus no Alarm 2 can be output

in this mode.