SI1142-A10-GMR Silicon Laboratories Inc, SI1142-A10-GMR Datasheet - Page 54

• Manufacturer Part Number: SI1142-A10-GMR
• Description: SENS IR PROXIMITY AMB LT 8-ODFN
• Manufacturer: Silicon Laboratories Inc

Specifications of SI1142-A10-GMR

• Mfg Application Notes: Si114x Designer's Guide AppNote Si114x Overlay Considerations AppNote Si114x irLED Guide AppNote Si114x Control Panel Guide AppNote
• Output Type: Digital - I²C
• Sensor Type: Proximity, Infrared and Ambient Light
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 336-1969; SI1142-A10-GM

Si1141/42/43
PS1_ADCMUX @ 0x07
Reset value = 0000 0011
54
Name
Type
Bit
7:0
Bit
PS1_ADCMUX[7:0] Selects ADC Input for PS1 Measurement.
7
Name
6
The following selections are valid when PS_ADC_MODE = 1 (default). This set-
ting is for normal Proximity Detection function.
0x03: Large IR Photodiode
0x00: Small IR Photodiode
In addition, the following selections are valid for PS_ADC_MODE = 0. With this
setting, irLED drives are disabled and the PS channels are no longer operating in
normal Proximity Detection function. The results have no reference and the refer-
ences needs to be measured in a separate measurement.
0x02: Visible Photodiode
A separate 'No Photodiode' measurement should be subtracted from this reading.
Note that the result is a negative value. The result should therefore be negated to
arrive at the Ambient Visible Light reading.
0x03: Large IR Photodiode
A separate “No Photodiode” measurement should be subtracted to arrive at
Ambient IR reading.
0x00: Small IR Photodiode
A separate “No Photodiode” measurement should be subtracted to arrive at
Ambient IR reading.
0x06: No Photodiode
This is typically used as reference for reading ambient IR or visible light.
0x25: GND voltage
This is typically used as the reference for electrical measurements.
0x65: Temperature
(Should be used only for relative temperature measurement. Absolute Tempera-
ture not guaranteed) A separate GND measurement should be subtracted from
this reading.
0x75: V
A separate GND measurement is needed to make the measurement meaningful.
DD
5
voltage
PS1_ADCMUX[7:0]
Rev. 1.1
4
RW
Function
3
2
1
0