Si1120-A-GM Silicon Laboratories Inc, Si1120-A-GM Datasheet - Page 2

• 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
Functional Block Diagram
2
Figure 1. Si1120 Typical Application Example of Digital Proximity and Ambient Light Sensor with
Product
Case
1.0 uF
C1
3.3 V
Transparent
window
VDD / DC+
GND / DC-
DCEN
VBAT
GND
Optical Block
Infrared
emitter
C8051F931
P0.6 / CNVSTR
C8051F931 MCU and I
P0.2 / XTAL1
P0.3 / XTAL2
P0.1 / AGND
P0.7 / IREF0
RST / C2CK
P0.0/VREF
P2.7 / C2D
P0.4 / TX
P0.5 / RX
XTAL3
XTAL4
P1.0
P1.1
P1.2
P1.3
P1.4
P1.5
P1.6
IR
STX
MD
SC
VIS
Rev. 1.0
MUX
MODE
CTRL
Transparent
2
C Interface
window
Ambient Light
TX LED
PRX
TXGD
TXO
Sources
STX
AMP
VSS
68.0 uF
RAMP
C4
GEN
Si1120
CMP
VDD
TX
VSS
MD
VREG
SC
30 ohm
TXGD
R1
BUF
10 uF
C2
PRX
VDD
TXO
0.1 uF
Output
PWM
C3