Datasheet

MLX90255BA

Linear Optical Array

MLX90255BA Linear Optical Array

Page 2

Rev 1.2 08-Aug-01

3901090255

MLX90255BA Electrical Specifications

parameter

symbol test conditions

Min

typ

max

units

Supply voltage

Vdd

4.5

5

5.5

V

Input voltage

Vi

0

Vdd

V

High-level input voltage

Vih

Vdd*0.7

Vdd

V

Low-level input voltage

Vil

0

Vdd*0.3

V

Hysteresis on SI and CLK

0.2

0.4

0.8

V

Wavelength of light source

400

1000

nm

Clock frequency

Fclock

64

1024

kHz

Sensor integration time below

60°C (1)

Tint

0.125

100

ms

Sensor integration time (full

temperature range) (2)

Tint

0.125

2

ms

Pixel charge transfer time (full

temp range)

Tqt

8

µs

Setup time, serial input

Tsu(SI)

350

ns

Hold time, serial input (3)

Th(SI)

40

ns

Operating free-air temperature

Ta

-40

125

°C

Clock pulse duration (high)

Tw(H)

320

ns

Clock pulse duration (low)

Tw(L)

320

ns

Notes:

(1) Reset until clock pulse 18 (on declining flank).

Minimum integration time = (133-18) * CLK period + 10µs (this is the time the S&H cap needs to follow).

At 1MHz clock speed, the minimum integration time becomes 0.125ms.

(2) At 125°C, the integration time should be limited to 2ms.

(3) The SI pulse must go low before the rising edge of the next clock pulse.