TSL250R, TSL251R, TSL252R
LIGHTĆTOĆVOLTAGE OPTICAL SENSORS
TAOS028A – MAY 2001
Dynamic Characteristics at TA = 25°C (see Figure 1)
PARAMETER
TEST CONDITIONS
TSL250R
MIN TYP MAX
tr Output pulse rise time VDD = 5 V, λp = 635 nm
260
tf Output pulse fall time VDD = 5 V, λp = 635 nm
260
Vn Output noise voltage
VDD = 5 V, Ee = 0,
f = 1000 Hz
0.8
TSL251R
MIN TYP MAX
70
70
0.7
TSL252R
MIN TYP MAX
7
7
UNIT
µs
µs
0.6
µV/√Hz
PARAMETER MEASUREMENT INFORMATION
Pulse
Generator
LED
(see Note A)
VDD
Ee
2
TSL25xR
–
+
1
Input
3
Output
RL
Output
(see Note B)
tr
tf
90%
90%
10%
10%
TEST CIRCUIT
VOLTAGE WAVEFORM
NOTES: A. The input irradiance is supplied by a pulsed AlInGaP light-emitting diode with the following characteristics: λp = 635 nm,
tr < 1 µs, tf < 1 µs.
B. The output waveform is monitored on an oscilloscope with the following characteristics: tr < 100 ns, Zi ≥ 1 MΩ, Ci ≤ 20 pF.
Figure 1. Switching Times
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Copyright E 2001, TAOS Inc.
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3