TSL1412S
1536 × 1 LINEAR SENSOR ARRAY WITH HOLD
TAOS045F − APRIL 2007
4
r
r
Copyright E 2007, TAOS Inc.
The LUMENOLOGY r Company
www.taosinc.com
Electrical Characteristics at f
clock
= 1 MHz, V
DD
= 5 V, T
A
= 25°C, λ
p
= 640 nm, t
int
= 5 ms,
R
L
= 330 Ω, E
e
= 12.5 μW/cm
2
(unless otherwise noted) (see Note 3)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
V
out
Analog output voltage (white, average over 1280 pixels) See Note 4 1.6 2 2.4 V
V
drk
Analog output voltage (dark, average over 1280 pixels) E
e
= 0 0 0.1 0.3 V
PRNU Pixel response nonuniformity See Note 5 ±20%
Nonlinearity of analog output voltage See Note 6 ±0.4%
Output noise voltage See Note 7 1 mVrms
R
e
Responsivity See Note 8 20 30 38
V/
(μJ/cm
2
)
Analog output saturation voltage
V
DD
= 5 V, R
L
= 330 Ω 4.5 4.8
V
sat
Analog output saturation voltage
V
DD
= 3 V, R
L
= 330 Ω 2.5 2.8
V
V
DD
= 5 V, See Note 9 155
SE Saturation exposure
V
DD
= 3 V, See Note 9 90
nJ/cm
2
DSNU Dark signal nonuniformity All pixels, E
e
= 0, See Note 10 0.05 0.15 V
IL Image lag See Note 11 0.5%
V
DD
= 5 V, E
e
= 0 40 55
I
DD
Supply current
V
DD
= 3 V, E
e
= 0 30 45
mA
V
IH
High-level input voltage 2 V
V
IL
Low-level input voltage 0.8 V
I
IH
High-level input current V
I
= V
DD
10 μA
I
IL
Low-level input current V
I
= 0 10 μA
C
i
Input capacitance, SI 25 pF
C
i
Input capacitance, CLK 25 pF
NOTES: 3. All measurements made with a 0.1 μF capacitor connected between V
DD
and ground.
4. The array is uniformly illuminated with a diffused LED source having a peak wavelength of 640 nm.
5. 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.
6. 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).
7. RMS noise is the standard deviation of a single-pixel output under constant illumination as observed over a 5-second period.
8. R
e(min)
= [V
out(min)
− V
drk(max)
] ÷ (E
e
× t
int
)
9. SE(min) = [V
sat(min)
− V
drk(min)
] × 〈E
e
× t
int
) ÷ [V
out(max)
− V
drk(min)
]
10. DSNU is the difference between the maximum and minimum output voltage for all pixels in the absence of illumination.
11. 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 12) 20 ns
t
h(SI)
Hold time, serial input (see Note 12 and Note 13) 0 ns
t
pd(SO)
Propagation delay time, SO 50 ns
t
w
Pulse duration, clock high or low 50 ns
t
r
, t
f
Input transition (rise and fall) time 0 500 ns
t
qt
Pixel charge transfer time 20 μs
NOTES: 12. Input pulses have the following characteristics: t
r
= 6 ns, t
f
= 6 ns.
13. SI must go low before the rising edge of the next clock pulse.
