VCNL4000-GS08 Vishay, VCNL4000-GS08 Datasheet - Page 10

• Manufacturer Part Number: VCNL4000-GS08
• Description: IC OPTICAL SENSOR I2C 12-LLP
• Manufacturer: Vishay
• Series: VCNL4000r
• Type: Short distance Proximity/Ambient Light Sensorr

Specifications of VCNL4000-GS08

• Output Type: Digital - I²C
• Sensor Type: Light and Proximity
• Sensing Range: 1mm To 200mm
• Output Current: 1.5µA
• Sensor Output: I2C
• Supply Voltage Range Dc: 2V To 3.6V
• Maximum Operating Temperature: + 85 C
• Supply Voltage: 3.6 V
• Operating Supply Voltage: 3.6 V
• Mounting Style: SMD/SMT
• Sensing Distance: 1 mm to 200 mm
• Minimum Operating Temperature: - 25 C
• Features: Integrated module with ambient light sensor, proximity sensor, signal conditioning IC
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant
• Other names: 751-1505-2

VCNL4000
Vishay Semiconductors
3.3 Continuous Conversion Mode in Ambient Light Measurement
In the following is a detail description of the function “continuous conversion” (bit 7 of register #4)
Standard mode (bit 7 of reg #4 = 0):
In standard mode the ambient light measurement is done during a fixed time frame of 100 ms. The single measurement itself
takes actually only appr. 300 μs.
The following figures show examples of this measurement timing in standard mode using averaging function 2 and 8 as
examples for illustration (possible values up to 128).
Note
•  Independent of setting of averaging the result is available only after 100 ms.
Continuous conversion mode (bit7 of reg #4 = 1):
In continuous conversion mode the single measurements are done directly subsequent after each other.
See following examples in figure 17 and 18
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THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT
Final Measurement Result = Average of these 2 Measurements
22315
460 μs
Fig. 15 - Ambient Light Measurement with Averaging = 2;
Fig. 17 - Ambient Light Measurement with Averaging = 2;
Start
Start
1.5 ms
using Continuous Conversion Mode
50 ms
100 ms
For technical questions, contact:
Fully Integrated Proximity and Ambient Light Sensor
This document is subject to change without notice.
with Infrared Emitter and I
22317
[e-mail]
Final Measurement Result = Average of these 8 Measurements
22316
460 μs
Fig. 16 - Ambient Light Measurement with Averaging = 8;
Fig. 18 - Ambient Light Measurement with Averaging = 8;
22318
Start
Start
using Continuous Conversion Mode
2
12.5 ms
C Interface
4.2 ms
100 ms
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Document Number: 83798
Rev. 1.3, 06-Apr-11