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[v2-00] 2023-Mar-10

TSL2541 − Typical Operating Characteristics

Figure 8:

ALS Operating Characteristics, VDD = 1.8V, TA = 25°C

Note(s):

1. For the Visible Channel, the values in this parameter are achieved by scaling the Visible Channel output (counts) via software by an

adjustment factor stored in the VISADJ Register (Address 0xE6).

Parameter

Conditions

Min

Typ

Max

Units

Integration time step size

2.68

2.78

2.90

ms

Number of integration

steps

1256

steps

Dark ADC count value

Ee = 0 μW/cm

2; AGAIN = 64x;

ATIME = 100ms (0xDC)

0

1

3

counts

Re

Irradiance responsivity (1)

Settings:

AGAIN = 16x

ATIME = 400ms

Visible Channel

White LED, 2700K

101

119

137

counts/

(μW/cm2)

IR Channel

λD = 950 nm LED

359

counts/

(μW/cm2)

Gain scaling, relative to 1x

gain setting

AGAIN = 4x

4

x

AGAIN = 16x

16

AGAIN = 64x

67

AGAIN = 128x

140

ADC noise

AGAIN = 16x0.005

% full scale

Typical Operating

Characteristics