TSL208 datasheet(4/8 Pages) ETC

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TSL208R

512 y 1 LINEAR SENSOR ARRAY

TAOS031C – OCTOBER 2002

E 2002, TAOS Inc.

The

LUMENOLOGY

r Company

www.taosinc.com

Electrical Characteristics at fclock = 1 MHz, VDD = 5 V, TA = 25°C, λp = 640 nm, tint = 5 ms,

RL = 330 Ω, Ee = 18 µW/cm2 (unless otherwise noted)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

Vout

Analog output voltage (white, average over 512 pixels)

See Note 1

1.6

2.4

Vdrk

Analog output voltage (dark, average over 512 pixels)

150

PRNU

Pixel response nonuniformity

See Notes 2 & 3

±7%

±20%

Nonlinearity of analog output voltage

See Note 3

±0.4%

Output noise voltage

See Note 4

mVrms

Responsivity

(µJ/cm2)

Saturation exposure

See Note 5

155

nJ/cm2

Vsat

Analog output saturation voltage

2.5

3.4

DSNU

Dark signal nonuniformity

All pixels

See Note 6

120

Image lag

See Note 7

0.5%

IDD

Supply current, output idle

IIH

High-level input current

VI = VDD

µA

IIL

Low-level input current

VI = 0

µA

VOH

High level output voltage SO

IO = 50 µA

4.5

4.95

VOH

High-level output voltage, SO

IO = 4 mA

4.6

VOL

Low level output voltage SO

IO = 50 µA

0.01

0.1

VOL

Low-level output voltage, SO

IO = 4 mA

0.4

Ci(SI)

Input capacitance, SI

Ci(CLK) Input capacitance, CLK

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 Vsat, the maximum Vdrk, and the maximum Re.

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:

out (IL) *

drk

out (white) *

drk

100

Timing Requirements (see Figure 1 and Figure 2)

MIN

NOM

MAX

UNIT

tsu(SI)

Setup time, serial input (see Note 8)

th(SI)

Hold time, serial input (see Note 8 and Note 9)

Pulse duration, clock high or low

tr, tf

Input transition (rise and fall) time

500

NOTES: 8. Input pulses have the following characteristics: tr = 6 ns, tf = 6 ns.

9. SI must go low before the rising edge of the next clock pulse.

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