MLX90711SA datasheet(3/12 Pages) ETC

Nome de Peças	MLX90711SA

Descrição Electrónicos	Position/movement Sensing Auto-Shutoff

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MLX902xx Name of Sensor

Rev Y.X

22/Aug/98

Page 3

MLX90711

Position/movement Sensing Auto-Shutoff

MLX90711 Position/movement Sensing Auto-Shutoff Page 3

Rev 1.0

15/Sep/00

Power down timing

After disconnecting the mains , the chip will reset:

- within typical 0.25sec when the coil is not activated

(iron is heating)

- within typical 2.5sec when the coil is activated (iron

is in ASO)

Relay and led driver options

The relay is driven by a pulsed signal instead of a

continuous

signal.

Consequently,

the

power

consumption is reduced.

The relay driver performs this feature. There are

four duty cycles available: 14.4%,16%,

28% and

31%. During 7.8 ms after the switching time , the

duty cycle is increased. This will give an increased

energy to the relay for a short time at the moment the

relay coil must change the state of the contact. The

switching time starts by applying the control voltage

on the coil of the relay. The values of the duty cycles

for the first 7.8 ms are in the table in brackets. The

switching frequency of relay and led are the same

and are typically 20.48KHz.

The type of relay should be normally closed (NC). A

NC relay is opened by applying the control voltage

on its coil and in this case the module is in Auto

Shut-Off mode.

Applications Example

PCB

Regulator & bias

Sequencer

Osc

Relay

Logic

ADC

LED

VSS

VDD1

RD

LEDP

SUM

CA1

CA0

90711

copper track

cavity

ball

ball position

SRD1

SRD2

Relay DC

Led DC

0

14.4%(28%)

0

1

28%(43%)

1

0

16%(31%)

1

31%(48%)

VSS

LEDP

VDD

1

90711

RD

Relay - Led output configuration

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