TSL2014
896 y 1 LINEAR SENSOR ARRAY
TAOS040C − AUGUST 2011
4
r
r
Copyright E 2011, TAOS Inc.
The LUMENOLOGY r Company
www.taosinc.com
Electrical Characteristics at f
clock
= 200 kHz, V
DD
= 5 V, T
A
= 25°C, λ
p
= 640 nm, t
int
= 5 ms,
R
L
= 330 Ω, E
e
= 18μW/cm
2
(unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
V
out
Analog output voltage (white, average over 896 pixels) See Note 1 1.6 2 2.4 V
V
drk
Analog output voltage (dark, average over 896 pixels) 0 0.05 0.15 V
PRNU Pixel response nonuniformity See Notes 2 & 3 7% 20%
Nonlinearity of analog output voltage See Note 3 ± 0.4% FS
Output noise voltage See Note 4 1 mVrms
R
e
Responsivity 16 22 28
V/
(μJ/cm
2
)
SE Saturation exposure See Note 5 155 nJ/cm
2
V
sat
Analog output saturation voltage 2.5 3.4 V
DSNU Dark signal nonuniformity All pixels See Note 6 25 120 mV
IL Image lag See Note 7 0.5%
I
DD
Supply current, output idle 53 80 mA
I
IH
High-level input current V
I
= V
DD
10 μA
I
IL
Low-level input current V
I
= 0 10 μA
High level output voltage SO1 and SO2
I
O
= 50 μA 4.5 4.95
V
OH
High-level output voltage, SO1 and SO2
I
O
= 4 mA 4.6
V
Low level output voltage SO1 and SO2
I
O
= 50 μA 0.01 0.1
V
OL
Low-level output voltage, SO1 and SO2
I
O
= 4 mA 0.4
V
C
i(SI)
Input capacitance, SI 35 pF
C
i(CLK)
Input capacitance, CLK 70 pF
NOTES: 1. The array is uniformly illuminated with a diffused LED source having a peak wavelength of 640 nm.
2. PRNU is the maximum difference between the voltage from any single pixel and the average output voltage from all pixels of the
device under test when the array is uniformly illuminated at the white irradiance level. PRNU includes DSNU.
3. Nonlinearity is defined as the maximum deviation from a best-fit straight line over the dark-to-white irradiance levels, as a percent
of analog output voltage (white).
4. RMS noise is the standard deviation of a single-pixel output under constant illumination as observed over a 5-second period.
5. Minimum saturation exposure is calculated using the minimum V
sat
, the maximum V
drk
, and the maximum R
e
.
6. DSNU is the difference between the maximum and minimum output voltage in the absence of illumination.
7. Image lag is a residual signal left in a pixel from a previous exposure. It is defined as a percent of white-level signal remaining after
a pixel is exposed to a white condition followed by a dark condition:
IL +
V
out (IL)
* V
drk
V
out (white)
* V
drk
100
Timing Requirements (see Figure 1 and Figure 2)
MIN NOM MAX UNIT
t
su(SI)
Setup time, serial input (see Note 8) 20 ns
t
h(SI)
Hold time, serial input (see Note 8 and Note 9) 0 ns
t
w
Pulse duration, clock high or low 50 ns
t
r
, t
f
Input transition (rise and fall) time 0 500 ns
NOTES: 8. Input pulses have the following characteristics: t
r
= 6 ns, t
f
= 6 ns.
9. SI must go low before the rising edge of the next clock pulse.
