TSL27711FN TAOS, TSL27711FN Datasheet - Page 17

• Manufacturer Part Number: TSL27711FN
• Description: Light to Digital Converters Light to Digital w/Proximity
• Manufacturer: TAOS

Specifications of TSL27711FN

• Data Bus Width: 16 bit
• Peak Wavelength: 640 nm, 850 nm
• Maximum Operating Frequency: 795 KHz
• Operating Supply Voltage: 2.4 V to 3.6 V
• Operating Current: 175 uA
• Maximum Operating Temperature: + 70 C
• Minimum Operating Temperature: - 30 C
• Interface Type: I2C
• Maximum Fall Time: 300 ns
• Maximum Rise Time: 300 ns
• Mounting Style: SMD/SMT
• Resolution: 16 bit
• Package / Case: DFN-6
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Prox Accum
Power Management
The LUMENOLOGY r Company
Prox ADC
Power consumption can be controlled through the use of the wait state timing because the wait state consumes
only 65 μA of power. Figure 16 shows an example of using the power management feature to achieve an
average power consumption of 155 μA current with four 100-mA pulses of proximity detection and 50 ms of ALS
detection. For I
to be enabled.
WAIT
ALS
4 IR LED Pulses
64 ms (32 ms LED On Time)
2.72 ms
2
C read and write transactions, if the PON bit is set to 0 the bit is overridden allowing the oscillator
47 ms
Figure 16. Power Consumption Calculations
r
50 ms
Avg = ((0.032
www.taosinc.com
y
100) + (2.72
Example: 100 ms Cycle TIme
State
Prox Accum (LED On)
Prox ADC
Wait
ALS
y
0.175) + (47
LIGHT-TO-DIGITAL CONVERTER
r
y
with PROXIMITY SENSING
0.065) + (50
Duration (ms)
0.064 (0.032)
2.7
47
50
TAOS100A − FEBRUARY 2010
y
Copyright E 2010, TAOS Inc.
0.175))
/
Current (mA)
100.0
0.175
0.065
0.175
100 = 155 mA
TSL2771
17