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TSL2014
896 1 LINEAR SENSOR ARRAY
TAOS040B
MAY 2007
4
Copyright 2007, TAOS Inc.
The
LUMENOLOGY
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
= 18
μ
W/cm
2
(unless otherwise noted)
PARAMETER
TEST CONDITIONS
See Note 1
MIN
1.6
TYP
MAX
2.4
0.15
20%
UNIT
V
V
V
out
V
drk
PRNU
Analog output voltage (white, average over 896 pixels)
Analog output voltage (dark, average over 896 pixels)
Pixel response nonuniformity
Nonlinearity of analog output voltage
Output noise voltage
2
0
0.05
7%
±
0.4%
See Notes 2 & 3
See Note 3
See Note 4
FS
1
mVrms
V/
(μ
J/cm
2
)
nJ/cm
2
V
mV
R
e
Responsivity
16
22
28
SE
V
sat
DSNU
IL
I
DD
I
IH
I
IL
Saturation exposure
Analog output saturation voltage
Dark signal nonuniformity
Image lag
Supply current, output idle
High-level input current
Low-level input current
See Note 5
155
3.4
25
0.5%
2.5
All pixels
See Note 7
See Note 6
120
53
80
10
10
mA
μ
A
μ
A
V
I
= V
DD
V
I
= 0
I
O
= 50
μ
A
I
O
= 4 mA
I
O
= 50
μ
A
I
O
= 4 mA
V
OH
High level output voltage SO1 and SO2
High-level output voltage, SO1 and SO2
4.5
4.95
V
4.6
V
OL
Low level output voltage SO1 and SO2
Low-level output voltage, SO1 and SO2
0.01
0.1
V
0.4
C
i(SI)
C
i(CLK)
NOTES:
Input capacitance, SI
35
pF
Input capacitance, CLK
70
pF
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
Vout (IL)
Vout (white)
Vdrk
Vdrk
100
Timing Requirements (see Figure 1 and Figure 2)
MIN
20
NOM
MAX
UNIT
ns
ns
ns
ns
t
su(SI)
t
h(SI)
t
w
t
r
, t
f
NOTES:
Setup time, serial input (see Note 8)
Hold time, serial input (see Note 8 and Note 9)
Pulse duration, clock high or low
Input transition (rise and fall) time
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.
0
50
0
500