GA1A2S100SS/GA1A2S100LY
Fig. 2 Block Diagram (Equivalent Circuit)
V
CC
Main PD
(PDA, PDC)
Current AMP 2
(With temperature
compensation function)
Current AMP 1
OUT
PD for spectral
sensitivity
compensation
(PDB)
GND
■
Design Considerations
Design Guidelines
1. This product is not designed to be electromagnetic- and ionized-particle-radiation resistant.
2. Sharp recommends bypass capacitors of at least 0.01
µF
between
V
CC
and ground, as close as
possible to the device.
3. This device contains three photodiodes and amplifies the differential of the photocurrent in each diode. Sharp
recommends that the light which falls on the device illuminate it as uniformly as possible.
4. For the most reliable sensing, Sharp recommends guarding the device from stray incident light.
■
Manufacturing Guidelines
Soldering Instructions
1. Sharp does not recommend soldering this part using methods that include preheat or solder reflow.
2. When mounting, care should be taken to avoid boundary exfoliation (pad lifting) between the solder and the cir-
cuit board.
3. If hand soldering, use temperatures
≤
260°C for
≤
5 seconds.
4. Do not subject the package to excessive mechanical force during soldering as it may cause deformation or
defects in plated connections. Internal connections may be severed due to mechanical force placed on the pack-
age due to the PCB flexing during the soldering process.
Cleaning Instructions
1. Confirm this device's resistance to process chemicals before use, as certain process chemicals may affect the
optical characteristics.
2. Solvent cleaning: Solvent temperature should be 45°C or below. Immersion time should be 3 minutes or less.
3. Ultrasonic cleaning: The effect upon devices varies due to cleaning bath size, ultrasonic power output, cleaning
time, PCB size and device mounting circumstances. Sharp recommends testing using actual production condi-
tions to confirm the harmlessness of the ultrasonic cleaning methods.
4. Recommended solvent materials: Ethyl alcohol, Methyl alcohol, and Isopropyl alcohol.
Sheet No.: D1-A00501EN
6
SHARP [ SHARP ELECTRIONIC COMPONENTS ]
