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BD6083GUL
(4) A/D conversion
? The detection of ambient data is done periodically for the low power.
? SBIAS and ADC are turned off except for the ambient measurement.
? The sensor current may be shut in this function, it can possible to decrease the current consumption.
? SBIAS pin and SSENS pin are pull-down in internal when there are OFF.
? SBIAS circuit has the two modes. (Usually ON mode or intermittent mode)
Register: ADCYC
Register: SBIASON
16 times
ALCEN
ADCYC
ADC Cycle
SBIAS Output
Datasheet
ADC Movement
T wait= 64ms(typ)
(Wait time)
When SBIASON=1
GC1, GC2
T AD= 16.4ms(typ)
(A/D conversion time)
GC1, GC2=00
AD start signal
T ADone= 1.024ms(typ)
AMB(3:0)
T oprt= 80.4ms(typ)
(Operate time)
AMB(3:0)
Figure 15.
16 times measurement
(5) Average filter
? Average filter is built in to rid noise or flicker. Average is 16 times
(6) Ambient level detection
? Averaged A/D value is converted to Ambient level corresponding to Gain control.
? Ambient level is judged to rank of 16 steps by ambient data.
? Ambient level is output through I 2 C.
Register: AMB(3:0)
GAIN
0
1
GAIN Setting
Ambient Level
0h
1h
2h
3h
4h
5h
6h
7h
8h
9h
Ah
Bh
Ch
Dh
Eh
Fh
Low
VoS × 0 / 256
VoS × 1 / 256
VoS × 2 / 256
VoS × 3 / 256
VoS × 4 / 256
VoS × 6 / 256
VoS × 7 / 256
VoS × 11 / 256
VoS × 12 / 256
VoS × 20 / 256
VoS × 21 / 256
VoS × 36 / 256
VoS × 37 / 256
VoS × 64 / 256
VoS × 65 / 256
VoS × 114 / 256
VoS × 115 / 256
VoS × 199 / 256
VoS × 200 / 256
VoS × 255 / 256
High
SSENS Voltage
VoS × 0 / 256
VoS × 1 / 256
VoS × 2 / 256
VoS × 3 / 256
VoS × 4 / 256
VoS × 5 / 256
VoS × 7 / 256
VoS × 8 / 256
VoS × 12 / 256
VoS × 13 / 256
VoS × 21 / 256
VoS × 22 / 256
VoS × 37 / 256
VoS × 38 / 256
VoS × 65 / 256
VoS × 66 / 256
VoS × 113 / 256
VoS × 114 / 256
VoS × 199 / 256
VoS × 200 / 256
VoS × 255 / 256
-
VoS × 0 / 256
VoS × 1 / 256
VoS × 2 / 256
VoS × 3 / 256
VoS × 4 / 256
VoS × 5 / 256
VoS × 6 / 256
VoS × 7 / 256
VoS × 9 / 256
VoS × 10 / 256
VoS × 13 / 256
VoS × 14 / 256
VoS × 19 / 256
VoS × 20 / 256
VoS × 27 / 256
VoS × 28 / 256
VoS × 38 / 256
VoS × 39 / 256
VoS × 53 / 256
VoS × 54 / 256
VoS × 74 / 256
VoS × 75 / 256
VoS × 104 / 256
VoS × 105 / 256
VoS × 144 / 256
VoS × 145 / 256
VoS × 199 / 256
VoS × 200 / 256
VoS × 255 / 256
※ In the Auto Gain control mode, sensor gain changes in gray-colored ambient level.
※ “/”: This means that this zone is not outputted in this mode.
www.rohm.com
? 2012 ROHM Co., Ltd. All rights reserved.
TSZ22111 ? 15 ? 001
31/42
TSZ02201-0G3G0C200100-1-2
05.Oct.2012 Rev.001
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