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TMD2772 датащи(PDF) 6 Page - ams AG

номер детали TMD2772
подробное описание детали  DIGITAL ALS and PROXIMITY MODULE
PDF  35 Pages
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производитель  AMSCO [ams AG]
домашняя страница  http://www.ams.com
Logo AMSCO - ams AG

TMD2772 датащи(HTML) 6 Page - ams AG

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TMD2772
DIGITAL ALS
and PROXIMITY MODULE
TAOS147
E − DECEMBER 2012
5
The LUMENOLOGY
r Company
r
r
Copyright
E 2012, TAOS Inc.
www.taosinc.com
Proximity Characteristics, VDD = VLEDA = 3 V, TA = 255C, PEN = 1 (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
IDD
Supply current
LED On
3
mA
LED On, PDRIVE = 0
100
I
LEDA current (Note 1)
LED On, PDRIVE = 1
50
mA
ILEDA
LEDA current (Note 1)
LED On, PDRIVE = 2
25
mA
LED On, PDRIVE = 3
12.5
PTIME
ADC conversion steps
1
256
steps
PTIME
ADC conversion time
PTIME = 0xFF ( = 1 conversion step)
2.58
2.73
2.9
ms
PTIME
ADC counts per step
PTIME = 0xFF ( = 1 conversion step)
0
1023
counts
PPULSE
LED pulses (Note 5)
0
255
pulses
LED On
LED pulse width
PPULSE = 1, PDRIVE = 0
7.3
μs
LED pulse period
PPULSE = 2, PDRIVE = 0
16.0
μs
Proximity response, no target
(offset)
PPULSE = 8, PDRIVE = 0, PGAIN = 4
×, (Note 2)
100
counts
Prox count, 100-mm target
(Note 3)
73 mm
× 83 mm, 90% reflective Kodak Gray Card,
PGAIN = 4
×, PPULSE = 8, PDRIVE = 0, PTIME = 0xFF
(Note 4)
450
520
590
counts
NOTES: 1. Value is factory-adjusted to meet the Prox count specification. Considerable variation (relative to the typical value) is possible after
adjustment.
2. Proximity offset varies with power supply characteristics and noise.
3. ILEDA is factory calibrated to achieve this specification. Offset and crosstalk directly sum with this value and is system dependent.
4. No glass or aperture above the module. Tested value is the average of 5 consecutive readings.
5. These parameters are ensured by design and characterization and are not 100% tested.
6. Proximity test was done using the following circuit. See the Application Information: Hardware section for recommended
application circuit.
TMD2772
VDD
1
mF
1
3
4
VDD
GND
LDR
5
6
LEDK
LEDA
1
mF
22
mF
IR LED Characteristics, VDD = 3 V, TA = 255C
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
VF
Forward Voltage
IF = 20 mA
1.4
1.5
V
VR
Reverse Voltage
IR = 10 μA
5
V
PO
Radiant Power
IF = 20 mA
4.5
mW
λp
Peak Wavelength
IF = 20 mA
850
nm
Δλ
Spectral Radiation Bandwidth
IF = 20 mA
40
nm
TR
Optical Rise Time
IF = 100 mA, TW = 125 ns, duty cycle = 25%
20
40
ns
TF
Optical Fall Time
IF = 100 mA, TW = 125 ns, duty cycle = 25%
20
40
ns



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