APDS-9303-020 Avago Technologies US Inc., APDS-9303-020 Datasheet - Page 4

• Manufacturer Part Number: APDS-9303-020
• Description: PHOTO SENSOR AMB SMBUS 6CHIPLED
• Manufacturer: Avago Technologies US Inc.
• Type: Ambient Light Sensor with Digital Outputr

Specifications of APDS-9303-020

• Peak Wavelength: 640 nm
• Maximum Rise Time: 300 ns
• Maximum Fall Time: 300 ns
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 30 C
• Product: Ambient Light Sensor
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

NOTES:
2. Optical measurements are made using small–angle incident radiation from light–emitting diode optical sources. Visible 640 nm LEDs and infrared
3. The 640 nm irradiance E
4. The 940 nm irradiance E
5. Integration time T
6. Full scale ADC count value is limited by the fact that there is a maximum of one count per two oscillator frequency periods and also by a 2–count
7. Low gain mode has 16x lower gain than high gain mode: (1/16 = 0.0625).
8. For sensor Lux calculation, please refer to the empirical formula below. It is based on measured Ch0 and Ch1 ADC count values for the light source
AC Electrical Characteristics (VDD = 3 V, Ta = 25°C)
† Specified by design and characterization; not production tested.
4
CH1/CH0
0 ≤ CH1/CH0 ≤ 0.52
0.52 ≤ CH1/CH0 ≤ 0.65
0.65 ≤ CH1/CH0 ≤ 0.80
0.80 ≤ CH1/CH0 ≤ 1.30
CH1/CH0 ≥ 1.30
PARAMETER
t
f
t
t
t
t
t
t
t
t
t
t
C
(SCL)
(CONV)
(BUF)
(HDSTA)
(SUSTA)
(SUSTO)
(HDDAT)
(SUDAT)
(LOW)
(HIGH)
F
R
j
940 nm LEDs are used for final product testing for compatibility with high–volume production.
spectral halfwidth Δλ½ = 17 nm.
halfwidth Δλ½ = 40 nm.
the Register Set section. For nominal f
Field value 01: T
as follows: 11/322 = 0.034 (field value 00), 81/322 = 0.252 (field value 01), and 322/322 = 1 (field value 10).
offset. Full scale ADC count value = ((number of clock cycles)/2 - 2) Field value 00: Full scale ADC count value = ((11 x 918)/2 - 2) = 5047 Field
value 01: Full scale ADC count value = ((81 x 918)/2 - 2) = 37177 Field value 10: Full scale ADC count value = 65535, which is limited by 16 bit
register. This full scale ADC count value is reached for 131074 clock cycles, which occurs for T
specified. Actual Lux is obtained with a commercial luxmeter. The range of the (sensor Lux) / (actual Lux) ratio is estimated based on the variation
of the 640 nm and 940 nm optical parameters. Devices are not 100% tested with fluorescent or incandescent light sources.
†
Conversion time
Clock frequency
Bus free time between start and stop condition
Hold time after (repeated) start condition. After this period,
the first clock is generated.
Repeated start condition setup time
Stop condition setup time
Data hold time
Data setup time
SCL clock low period
SCL clock high period
Clock/data fall time
Clock/data rise time
Input pin capacitance
int
int
= (81 x 918)/f
, is dependent on internal oscillator frequency (f
e
e
is supplied by a GaAs light–emitting diode with the following characteristics: peak wavelength λp = 940 nm and spectral
is supplied by an AlInGaP light–emitting diode with the following characteristics: peak wavelength λp = 640 nm and
osc
= 101 ms Field value 10: T
osc
= 735 kHz, nominal T
Sensor Lux Formula
Sensor Lux = (0.0315 x CH0) – (0.0593 x CH0 x ((CH1/CH0)1.4))
Sensor Lux = (0.0229 x CH0) – (0.0291 x CH1)
Sensor Lux = (0.0157 x CH0) – (0.0180 x CH1)
Sensor Lux = (0.00338 x CH0) – (0.00260 x CH1)
Sensor Lux = 0
int
int
= (number of clock cycles)/f
= (322 x 918)/f
osc
) and on the integration field value in the timing register as described in
osc
= 402 ms Scaling between integration times vary proportionally
MIN
12
–
1.3
0.6
0.6
0.6
0
100
1.3
0.6
–
–
–
int
= 178 ms for nominal f
osc
Field value 00: T
TYP
100
–
–
–
–
–
–
–
–
–
–
–
–
int
osc
= (11 x 918)/f
MAX
400
400
–
–
–
–
0.9
–
–
–
300
300
10
= 735 kHz.
osc
UNIT
ms
kHz
μs
μs
μs
μs
μs
ns
μs
μs
ns
ns
pF
= 13.7 ms