TMD3721 datasheet(10/89 Pages) AMSCO

10 / 89 page

Datasheet, Public

Page 9

[v3-00] 2023-May-26

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TMD3721 − Optical Characteristics

Figure 9:

Proximity Optical Characteristics

Note(s):

1. Representative result by lab characterization with VDD3 = 3.3V.

2. Optically trimmed at factory final test.

3. Response with no target varies with power supply characteristics and system noise.

4. Production tested results is the standard deviation of 10 readings divided by the average response.

Parameter

Conditions

Min

Typ

Max

Unit

Response: Absolute (1)

PTIME =528μs

PGAIN =2x; PGAIN2 =2.5x

PLDRIVE0 =10mA

PPULSE =1pulse

PPULSE_LEN =45μs

PROX_DATA_AVG =8

BINSRCH_TARGET =15

APC =disabled

ORE =disabled

Electrical Calibration

No glass above module

Target Material: 18% reflective surface

Target Size: 100mm x100mm

Target Distance: 30mm

480

counts

Part to Part Variation (2)

Same as Response: Absolute except the

followings:

PGAIN2=5x

Target Material: broadband diffusor

Target Size: 2 inch diameter

Target Distance: 85.75mm

±25

Response: No Target (3)

Same as Response: Absolute except the

followings:

PGAIN2=5x

No Target

counts

Noise /Signal (4)

Same as Response: Absolute except the

followings:

PGAIN2=5x

Target Material: broadband diffusor

Target Size: 2 inch diameter

Target Distance: 85.75mm

0.11

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