MLX75031 Datasheet, PDF (10/67 Pages) Melexis Microelectronic Systems – Optical Gesture & Proximity Sensing IC

MLX75031
Optical Gesture & Proximity Sensing IC
with Integrated LED Drivers
Datasheet
7. Sensor Interface Specific Specifications
The following characteristics are valid over the full temperature range of T_A = -40°C to +105°C and a supply
range of VSUP = 6.18V and VCCD = VCCA = 3.135..3.465V unless otherwise noted.
Active Light Channels (Photodiode A & B)
Parameter
Symbol Test Conditions Min Typ Max Units
Optical transfer ratio
OTR = ^{I LED}
30
I _PD
DC sunlight current in the
photodiode
I_sun
0
Fast full scale transition at I_sunmax
t_sunrise
3.5
Min. relative active light
modulation
(referred to received IR signal)
∆I _{PD _ min}
I _PD
- 20 µs LED pulse
- PD pulsed current
≥ 20µA, - 25°C
- DC sun constant
- response per
channel 2.5ms
Dynamic range of active light events
(referred to received IR signal)
∆I_ActiveLight
12000
900 µA
ms
1 5 (*) %
80
%
Active light repetition time
Acive light measurement
channel A, channel B
t_{rep_activelight}
2.5
ms
2.5
ms
LED pulse duration range
Max. input capacitance PDA & PDB
DC light measurement range
DC light measurement offset
DC light measurement slope
DC light measurement
inearity error
t₀
C_PDA, C_PDB
I_DC range
I_DC offset
I_DC sens
selectable via register 15-8%
0
I_DC = 0uA & VDD=3.3V 1360 1960
28 35
I_DC range: 0uA ->
900uA
5
30+8%
80
900
2460
44
8
µs
pF
µA
LSB
LSB/µA
%
DC light measurement word length
16
Bit
DC light measurement noise
for averaging of
8 measurements
3
Bit
Error condition Err_TIA
Critical error detected on TIA output, if TIA output outside 1.1V+/- (0.65 … 0.75V)
Table 4 : Active Light Channels Specification
(*) The 5% is really worst case condition, i.e. with OTR = 30 and Rshunt = 1Ohm,
this condition is not realistic and should be avoided in a the application
REVISION 001 – JANUARY, 2013
39010xxxxx
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