MLX75031 Datasheet, PDF (12/67 Pages) Melexis Microelectronic Systems – Optical Gesture & Proximity Sensing IC

MLX75031
Optical Gesture & Proximity Sensing IC
with Integrated LED Drivers
Datasheet
Table 6 : Temperature Sensor Specification
Die Temperature Sensor
Parameter
Symbol
Test Conditions
Temp. sensor range
Temp. sensor transfer
function (*)
Temp. sensor output
ϑ
Vϑ
V@85°C
At VDD=3.3V
At VDD=3.3V and full
Calib 1/2 ranges
Temp. sensor error
ϑerror@30°C
At VDD=3.3V
Temp. response time
tresp_ϑ
Temp. sensor word length
Temp. sensor noise
for averaging of 16
measurements
(*) This value will be stored in the Calib1 Register.
Min Typ Max
-40
105
-82 -67 -51
Units
°C
LSB/K
5990 8096 10203 LSB
±3
°C
1
s
16
bits
3
bits
LED Driver
Parameter
LED pulse current
Shunt resistor
values
Shunt voltage
Rising and falling
time
DC offset level
Time before pulse
Symbol
Tdc_pulse
Test Conditions
Shunt=1 Ω
The minimum VSUP voltage is
affected by the drop across the
shunt resistor
1tau settling time,
programmable via Rise<1:0>
Shunt bias voltage before
transmitting the current pulse
Biasing time of the LED driver
(Shunt voltage = DC offset level)
before pulse transmission.
See Section 8.13.0 for details.
Error condition Err_Drv
Min Typ Max
1
150
1
6.6
1
993
1..7
1
200
Err_Drv difference between Vdac and Vsense. Detection level larger 200mV
Table 7 : LED Driver specification
Units
mA
Ohm
mV
us
mV
us
REVISION 001 – JANUARY, 2013
39010xxxxx
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