tsl2563 TEXAS ADVANCED OPTOELECTRONIC SOLUTIONS, tsl2563 Datasheet - Page 28

• Manufacturer Part Number: tsl2563
• Description: Low-voltage Light-to-digital Converter
• Manufacturer: TEXAS ADVANCED OPTOELECTRONIC SOLUTIONS

TSL2562, TSL2563
LOW-VOLTAGE
LIGHT-TO-DIGITAL CONVERTER
TAOS066J − MAY 2007
Power Supply Decoupling and Application Hardware Circuit
28
Copyright E 2007, TAOS Inc.
The power supply lines must be decoupled with a 0.1 μF capacitor placed as close to the device package as
possible (Figure 16). The bypass capacitor should have low effective series resistance (ESR) and low effective
series inductance (ESI), such as the common ceramic types, which provide a low impedance path to ground
at high frequencies to handle transient currents caused by internal logic switching.
Pull-up resistors (Rp) maintain the SDAH and SCLH lines at a high level when the bus is free and ensure the
signals are pulled up from a low to a high level within the required rise time. For a complete description of the
SMBus
http://www.smbus.org/specs. For a complete description of I
review the I
A pull-up resistor (R
fashion to the SCL and SDA lines. A typical impedance value between 10 KΩ and 100 KΩ can be used. Please
note that while the figure above shows INT being pulled up to V
V
BUS
.
maximum
2
C Specification at http://www.semiconductors.philips.com.
PI
) is also required for the interrupt (INT), which functions as a wired-AND signal in a similar
and
APPLICATION INFORMATION: HARDWARE
R
minimum
P
Figure 16. Bus Pull-Up Resistors
V
r
BUS
R
P
Rp
www.taosinc.com
R
PI
values,
TSL2562/
TSL2563
V
please
DD
2
C maximum and minimum Rp values, please
DD
, the interrupt can optionally be pulled up to
review
SDA
r
0.1 mF
SCL
the
INT
SMBus
The LUMENOLOGY r Company
Specification
at