TCS3771 Datasheet, PDF (6/33 Pages) ams AG – COLOR LIGHT-TO-DIGITAL CONVERTER with PROXIMITY SENSING

TCS3771
COLOR LIGHT-TO-DIGITAL CONVERTER
with PROXIMITY SENSING
TAOS110A − MARCH 2011
Proximity Characteristics, V_DD = 3 V, T_A = 255C, Gain = 16, PEN = 1 (unless otherwise noted)
PARAMETER
TEST CONDITIONS
CONDITION
MIN TYP MAX UNIT
I_DD Supply current
ADC conversion time step size
LDR pulse on
PTIME = 0xFF
3
mA
2.27 2.4 2.56 ms
ADC number of integration steps
1
256 steps
ADC counts per step
0
1023 counts
IR LED pulse count
0
255 pulses
LED pulse period
Two or more pulses
14
μs
LED pulse width — LED on time
6.3
μs
lid ^{PDRIVE = 0}
80 106
132
LED drive current
I_SINK sink current @ 600 mV,
LDR pin
PDRIVE = 1
PDRIVE = 2
50
mA
25
a _{PDRIVE = 3}
12.5
Dark count value
ill ^{v Red channel}
E_e = 0, PTIME = 0xFB, PPULSE = 2
λ_P = 850 nm, E_e = 45.3 μW/cm², PTIME = 0xFB,
PPULSE = 2 (See note 1)
1000
900 counts
3000 counts
Clear channel
λ_P = 850 nm, E_e = 45.3 μW/cm², PTIME = 0xFB,
PPULSE = 2 (See note 1)
1000
3000 counts
t Operating distance (See note 2)
30
inches
NOTES: 1. The specified light intensity is 100% modulated by the pulse output of the device so that during the pulse output low time, the light
G _{s intensity is at the specified level, and 0 otherwise.}
2. Proximity Operating Distance is dependent upon emitter properties and the reflective properties of the proximity surface. The
A ^{t nominal value shown uses an IR emitter with a peak wavelength of 850nm and a 20° half angle. The proximity surface used is a}
90% reflective (white surface) 16 × 20-inch Kodak Gray Card. 60 mw/SR, 100 mA, 64 pulses, open view (no glass). Note: Greater
distances are achievable with appropriate system considerations.
s _{en Wait Characteristics, VDD = 3 V, TA = 255C, Gain = 16, WEN = 1 (unless otherwise noted)}
m ^t PARAMETER
TEST CONDITIONS
CHANNEL
MIN TYP MAX
a ^{n Wait step size}
WTIME = 0xFF
2.27 2.4 2.56
Technical ^{co Wait number of steps}
1
256
UNIT
ms
steps
The LUMENOLOGY r Company
r
r
www.taosinc.com
Copyright E 2011, TAOS Inc.
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