MLX90711 Datasheet, PDF (3/12 Pages) List of Unclassifed Manufacturers – Position/movement Sensing Auto-Shutoff

MLX90711
Position/movement Sensing Auto-Shutoff
Applications Example
ball
PCB
cavity
ball position
copper track
CA0
Sequencer
CA1
90711
VDD1
Regulator & bias
SUM
ADC
Osc
Logic
VSS
Relay
RD
LED
LEDP
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
SRD1
0
0
1
1
SRD2
0
1
0
1
Relay DC
14.4%(28%)
28%(43%)
16%(31%)
31%(48%)
Led DC
14.4%(28%)
28%(43%)
16%(31%)
31%(48%)
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.
Relay - Led output configuration
VDD
1
LEDP
RD
90711
VSS
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.
MLLXX990027x1x1NaPmoesitoifonS/emnosovrement Sensing Auto-ShutofRf ePvaYg.Xe 3
22/Aug/98 Rev 1.0 15P/aSgeep3/00