Si1120-A-GM Silicon Laboratories Inc, Si1120-A-GM Datasheet - Page 16

• Manufacturer Part Number: Si1120-A-GM
• Description: Industrial Optical Sensors Proximity/Ambient Light Snsr w/PWM Out
• Manufacturer: Silicon Laboratories Inc
• Type: Ambient Light Sensor with Analog Outputr

Specifications of Si1120-A-GM

• Product: Integrated Ambient Light and Proximity Sensor
• Output Type: Analog - Voltage
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Si 1120
3. Pin Descriptions—Si1120 (ODFN)
16
Pin
1
2
3
4
5
6
7
8
Name
TXGD TXGD.
PRX
TXO
STX
VSS
V
MD
SC
DD
PWM Output.
Outputs a low-going PWM pulse proportional to signal.
Power ground (LED and PRX driver ground return). Must be connected to VSS.
Transmit Output.
Normally connected to an infrared LED cathode. The output current is a programmable con-
stant current sink. This output can be allowed to saturate, and output current can be limited by
the addition of a resistor in series with the LED.
Strobe.
Initiates PS or ALS measurement. Also used as data input for the M2 internal mode control
flip-flop.
Power Supply.
2.2 to 3.7 V voltage source.
Shutdown/Clock.
When high, shuts down the part. When enabling the part, the low-going edge clocks the states
of STX and MD into mode-control D flip-flops M2 and M3.
Mode Control.
Controls two mode control bits, one directly and the other indirectly, by providing the data input
for the M3 internal mode control flip-flop.
VSS.
Ground (analog ground). Must be connected to TXGD.
Figure 17. Pin Configurations
TXGD
PRX
TXO
STX
Table 5. Pin Descriptions
1
2
3
4
Rev. 1.0
Description
8
7
6
5
VSS
MD
SC
VDD