TMG39921 datasheet(12/96 Pages) OSRAM

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ams Datasheet

Page 11

[v1-06] 2018-Feb-27

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TMG3992 − Electrical Characteristics

Note(s):

1. This parameter ensured by design and characterization and is not 100% tested.

2. Value may be as much as 1.36μs longer than specified.

3. Value is factory-adjusted to meet the Proximity response specification. Considerable variation (relative to the typical value) is possible

after adjustment. LEDBOOST increases current setting (as defined by LDRIVE or GLDRIVE). For example, if LDRIVE = 0 and

LEDBOOST = 300%, LDR current is 300mA.

4. LEDBOOST multiplies LDR current by the percentage selected.

5. Proximity offset value varies with power supply characteristics and system noise.

6. Production tested value is the average of 5 readings.

7. Correlated result by characterization. Refer to Figure 25 and Figure 26 for typical operating settings.

Proximity offset

(no target response) (5)

PGAIN = 2 (4x)

LDRIVE = 0

LEDBOOST = 1

PPLEN = 2

PPULSE= 2 (3 pulses)

100mm X 100mm 90%

reflective Kodak Grey

Card at 100mm distance

counts

Relative proximity response (6)

PGAIN = 2 (4x)

LDRIVE = 1

LEDBOOST = 0

PPLEN = 1

PPULSE= 5 (6 pulses)

d=23mm round target

at 30mm distance

100

125

Proximity response (7)

PGAIN = 2 (4x)

LDRIVE = 0

LEDBOOST = 1

PPLEN = 2

PPULSE= 2 (3 pulses)

100mm X 100mm 90%

reflective Kodak Grey

Card at 100mm distance

100

120

counts

Parameter

Conditions

Min

Typ

Max

Units

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