TSL27713FN TAOS, TSL27713FN Datasheet - Page 29

• Manufacturer Part Number: TSL27713FN
• Description: Light to Digital Converters Light to Digital w/Proximity
• Manufacturer: TAOS

Specifications of TSL27713FN

• Data Bus Width: 16 bit
• Peak Wavelength: 640 nm, 850 nm
• Maximum Operating Frequency: 795 KHz
• Operating Supply Voltage: 2.4 V to 3.6 V
• Operating Current: 175 uA
• Maximum Operating Temperature: + 70 C
• Minimum Operating Temperature: - 30 C
• Interface Type: I2C
• Maximum Fall Time: 300 ns
• Maximum Rise Time: 300 ns
• Mounting Style: SMD/SMT
• Resolution: 16 bit
• Package / Case: DFN-6
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

LED Driver Pin with Proximity Detection
The LUMENOLOGY r Company
Figure 19. Application Hardware Circuit for Proximity Sensing with External LED Driver Using P-FET
The application hardware circuit with proximity detection requires an LED connected as shown in Figure 18.
V
as close to the source as possible.
If the hardware application requires more than 100 mA of current to drive the LED, then an external transistor
should be used. Note, R2 should be sized adequately to bias the gate voltage given the LDR current mode
setting. See Figure 19.
bat
may be an independent power source. If V
Figure 18. Application Hardware Circuit for Proximity Sensing with Internal LED Driver
R
P
V
R
BUS
P
APPLICATION INFORMATION: HARDWARE
R
V
P
BUS
R
P
R
r
PI
R
PI
www.taosinc.com
1 mF
1 mF
bat
Transistor
= V
dd
V
(same source), however, tie the two power lines together
bat
R1
LDR
LED
LED
LDR
V
TSL2771
bat
R2
V
DD
TSL2771
LIGHT-TO-DIGITAL CONVERTER
V
r
DD
SDA
with PROXIMITY SENSING
SCL
1 mF
INT
1 mF
TAOS100A − FEBRUARY 2010
Copyright E 2010, TAOS Inc.
SDA
SCL
INT
TSL2771
29