TCS3772 datasheet(5/33 Pages) AMSCO

5 / 33 page

TCS3772

COLOR LIGHT-TO-DIGITAL CONVERTER

with PROXIMITY SENSING

TAOS145B − SEPTEMBER 2012

E 2012, TAOS Inc.

The LUMENOLOGY

r Company

www.taosinc.com

Operating Characteristics, VDD = 3 V, TA = 255C (unless otherwise noted)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

Active — LDR pulses off

235

330

IDD

Supply current

Wait state

μA

IDD

Supply current

Sleep state — no I2C activity

2.5

μA

INT SDA output low voltage

3 mA sink current

0.4

VOL

INT, SDA output low voltage

6 mA sink current

0.6

I LEAK

Leakage current, SDA, SCL, INT pins

−5

μA

I LEAK

Leakage current, LDR pin

−5

μA

SCL SDA input high voltage

TCS37721 & TCS37725

0.7 VDD

VIH

SCL, SDA input high voltage

TCS37723 & TCS37727

1.25

SCL SDA input low voltage

TCS37721 & TCS37725

0.3 VDD

VIL

SCL, SDA input low voltage

TCS37723 & TCS37727

0.54

Optical Characteristics, VDD = 3 V, TA = 255C, AGAIN = 16y, ATIME = 0xF6 (unless otherwise noted)

(Note 1)

PARAMETER

TEST

Red Channel

Green Channel

Blue Channel

Clear Channel

UNIT

PARAMETER

TEST

CONDITIONS

MIN

TYP

MAX

MIN

TYP

MAX

MIN

TYP

MAX

MIN

TYP

MAX

UNIT

λD = 465 nm

Note 2

15%

10%

42%

65%

88%

11.0

13.8

16.6

Irradiance

responsivity

λD = 525 nm

Note 3

25%

60%

85%

10%

45%

13.2

16.6

20.0

counts/

μW/

cm2

responsivity

λD = 615 nm

Note 4

80%

110%

14%

24%

15.6

19.5

23.4

cm2

NOTES: 1. The percentage shown represents the ratio of the respective red, green, or blue channel value to the clear channel value.

2. The 465 nm input irradiance is supplied by an

InGaN light-emitting diode with the following characteristics:

dominant wavelength

λD = 465 nm, spectral halfwidth Δλ½ = 22 nm.

3. The 525 nm input irradiance is supplied by an

InGaN light-emitting diode with the following characteristics:

dominant wavelength

λD = 525 nm, spectral halfwidth Δλ½ = 35 nm.

4. The 615 nm input irradiance is supplied by a Al

InGaP light-emitting diode with the following characteristics:

dominant wavelength

λD = 615 nm, spectral halfwidth Δλ½ = 15 nm.

RGBC Characteristics, VDD = 3 V, TA = 25

5C, AGAIN = 16

y, AEN = 1 (unless otherwise noted)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

Dark ADC count value

Ee = 0, AGAIN = 60

×, ATIME = 0xD6 (100 ms)

counts

ADC integration time step size

ATIME = 0xFF

2.27

2.4

2.56

ADC number of integration steps

(Note 5)

256

steps

ADC counts per step (Note 5)

1024

counts

ADC count value (Note 5)

ATIME = 0xC0 (153.6 ms)

65535

counts

lti

t 1

× i

3.8

4.2

Gain scaling, relative to 1

× gain

16 8

Gain scaling, relative to 1

× gain

setting

16.8

setting

NOTE 5: Parameter ensured by design and is not tested.

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