VCNL4040 Datasheet, PDF (3/23 Pages) Vishay Siliconix – Fully Integrated Proximity and Ambient Light Sensor with Infrared Emitter, I2C Interface, and Interrupt Function

www.vishay.com
BLOCK DIAGRAM
VCNL4040
Vishay Semiconductors
VDD
PD Timing
Controller
DSP
PS
PD
Oscillator
INT
SCLK
SDAT
Temperature
Sensor
I²C Bus Logic
Control
ALS
PD _{Low Pass Filter}
GND
Anode
PD
Buffer
IR LED
LED Driver ^LED_CATHODE
ALS
16 bits
Data
Buffer
BASIC CHARACTERISTICS (T_amb = 25 °C, unless otherwise specified)
PARAMETER
TEST CONDITION
SYMBOL
MIN.
Supply voltage
Supply current
I²C supply voltage
ALS shut down
PS shut down
Logic high
I²C signal input
Logic low
Logic high
Logic low
Peak sensitivity wavelength of
ALS
Excluded LED driving
Light condition = dark, V_DD = 3.3 V
ALS disable, PS enable
ALS enable, PS disable
V_DD = 3.3 V
V_DD = 2.6 V
V_DD
I_DD
I_DD (SD)
V_{PULL UP}
I_ALSSD
I_PSSD
V_IH
V_IL
V_IH
V_IL
λ_p
2.5
1.8
1.55
1.4
Peak sensitivity wavelength of PS
λ_pps
Full ALS counts
16-bit resolution
Full PS counts
12-bit / 16-bit resolution
ALS sensing tolerance
White LED light source
Detectable
intensity
Minimum
Maximum
I_T = 640 ms, 1 step ⁽¹⁾⁽²⁾
I_T = 80 ms, 65 535 step ⁽¹⁾⁽²⁾
ALS dark offset
I_T = 80 ms, normal sensitivity ⁽¹⁾
0
PS detection range
Kodak white card
0
Operating temperature range
Cathode (sensor) voltage
T_amb
-40
2.5
IRED driving current
(3)
TYP.
300
0.2
200
260
550
940
0.0125
6553
MAX.
3.6
3.6
UNIT
V
μA
μA
V
μA
μA
V
0.4
V
0.4
nm
65 535
4096 / 65 535
± 10
nm
steps
steps
%
lx
3
steps
200
mm
+85
°C
3.6
V
200
mA
Notes
(1) _{Test condition: VDD = 3.3 V, temperature: 25 °C}
(2) _{Maximum detection range to ambient light can be determined by ALS refresh time adjustment. Refer to table “ALS Resolution and Maximum}
Detection Range”
(3) _{Based on IRED on / off duty ratio = 1/40, 1/80, 1/160, and 1/320}
Rev. 1.4, 02-Mar-15
3
Document Number: 84274
For technical questions, contact: [e-mail]
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000