TSL27721 datasheet(9/56 Pages) AMSCO

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ams Datasheet

Page 9

[v1-00] 2016-Aug-26

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TSL2772 − Absolute Maximum Ratings

Figure 9:

Proximity Characteristics, VDD = 3 V, TA = 25°C, PGAIN = 1x, PEN = 1 (unless otherwise noted)

Parameter

Test Conditions

Min

Typ

Max

Unit

IDD

Supply current

LDR pulse ON

ADC conversion

time step size

PTIME = 0xFF

2.58

2.73

2.9

ADC number of

integration steps (1)

256

steps

ADC counts per

step (1)

PTIME = 0xFF

1023

counts

ADC count value

λp = 850 nm, Ee = 263.4μW/cm2,

PTIME = 0xFB, PPULSE = 4

CH0 diode

1500

2000

2500

counts

CH1 diode

900

1200

1500

ADC output

responsivity

λp = 850 nm, PTIME = 0xFB,

PPULSE = 1

CH0 diode

1.90

counts/

(

μW/cm2)

CH1 diode

1.14

Gain scaling,

relative to 1x gain

setting

PGAIN = 2x

PGAIN = 4x

PGAIN = 8x

Noise (1)(2)(3)

Ee = 0, PTIME = 0xFB, PPULSE = 4 (6)

CH0 diode

0.5

%FS

CH1 diode

0.5

LED pulse count (1)

0255

pulses

LED pulse period

16.0

μs

LED pulse width —

LED ON time

7.3

μs

LED drive current

ISINK sink current

@ 1.6 V, LDR pin

120 mA: PDRIVE = 0 & PDL = 0

116

145

60 mA: PDRIVE = 1 & PDL = 0

30 mA: PDRIVE = 2 & PDL = 0

15 mA: PDRIVE = 3 & PDL = 0

14.5

15 mA: PDRIVE = 0 & PDL =1

12.9

7.5 mA: PDRIVE =1 & PDL =1

6.4

3.8 mA: PDRIVE =2 & PDL =1

3.2

1.9 mA: PDRIVE =3 & PDL =1

1.6

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