TSL257S Datasheet, PDF (4/9 Pages) ams AG – HIGH-SENSITIVITY LIGHT-TO-VOLTAGE CONVERTER

TSL257
HIGH-SENSITIVITY
LIGHT-TO-VOLTAGE CONVERTER
TAOS023E − SEPTEMBER 2007
Switching Characteristics at V_DD = 5 V, T_A = 25°C, λ_p = 470 nm, R_L = 10 kΩ (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN TYP MAX
UNIT
t_r Output pulse rise time, 10% to 90% of final value
See Note 10 and Figure 1
160 250
μs
t_f Output pulse fall time, 10% to 90% of final value
See Note 10 and Figure 1
150 250
μs
t_s Output settling time to 1% of final value
See Note 10 and Figure 1
330
μs
Integrated noise voltage
f = dc to 1 kHz E_e = 0
200
μVrms
f = 10 Hz
V_n Output noise voltage, rms
f = 100 Hz
f = 1 kHz
lid ^{NOTE 10: Switching characteristics apply over the range VO = 0.1 V to 4.5 V.}
E_e = 0
E_e = 0
E_e = 0
6
6
μV/√Hz rms
7
va _{PARAMETER MEASUREMENT INFORMATION}
ill ^Pulse
Generator
t _LED
s ^{AG nt s (see Note A)}
V_DD
E_e
2
TSL257
−
+
1
Input
3
Output
R_L
Output
(see Note B)
t_r
t_f
90%
90%
10%
10%
TEST CIRCUIT
VOLTAGE WAVEFORM
e _{NOTES: A. The input irradiance is supplied by a pulsed InGaN light-emitting diode with the following characteristics: λp = 470 nm,}
m ^{t tr < 1 μs, tf < 1 μs.}
B. The output waveform is monitored on an oscilloscope with the following characteristics: t_r < 100 ns, Z_i ≥ 1 MΩ, C_i ≤ 20 pF.
Technicaal ^{con Figure 1. Switching Times}
The LUMENOLOGY r Company
r
r
www.taosinc.com
Copyright E 2007, TAOS Inc.
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