TSL2591 – 6

Datasheet - Apr. 2013 - ams163.5

Figure TSL2591 – 9:

Notes:

1. Optical measurements are made using small-angle incident radiation from light-emitting diode optical sources. Visible white

LEDs and infrared 850 nm LEDs are used for final product testing for compatibility with high-volume production

2. The white LED irradiance is supplied by a white light-emitting diode with a nominal color temperature of 4000 K.

3. The 850 nm irradiance is supplied by a GaAs light-emitting diode with the following typical characteristics: peak wavelength

4. Parameter ensured by design and is not 100% tested.

Parameter

Conditions

Channel

Min

Typ

Max

Units

Dark ADC count

value

ATIME=000b (100ms)

CH0

CH1

0

0

25

25

counts

ADC integration

time step size

ATIME = 000b (100ms)

95

101

108

ms

ADC number of

integration steps

(Note 4)

16

steps

ADC counts per

step

ATIME = 000b (100ms)

0

37888

counts

ADC count value

ATIME = 101b (600ms)

0

65535

counts

ADC count value

White light (Note 2)

2

ATIME = 000b (100 ms)

CH0

CH1

25500

30000

4996

34500

counts

ATIME = 000b (100 ms)

CH0

CH1

25500

30000

19522

34500

counts

ADC count value

ratio: CH1/CH0

White light (Note 2)

0.116

0.166

0.216

0.456

0.652

0.848

Irradiance

responsivity

White light (Note 2)

ATIME = 000b (100 ms)

CH0

CH1

6024

1003

counts/

ATIME = 000b (100 ms)

CH0

CH1

5338

3474

Noise

(Note 4)

White light (Note 2)

2

ATIME = 000b (100 ms)

CH0

1

2

1 standard

deviation

Gain scaling,

relative to 1× gain

setting

AGAIN = Low

AGAIN = Med

AGAIN = High

AGAIN = Max

1

25

428

9876

×