Data Sheet

■ Electro-optical Characteristics
Fig.3 Timing Chart
GP2Y0A21YK/GP2Y0D21YK
■ Recommended Operating Conditions
Fig.1 Internal Block Diagram Fig.2 Internal Block Diagram
Parameter Symbol Rating Unit
V
CC
4.5 to +5.5 V
Operating supply voltage
Parameter
Symbol
Conditions
MIN.
TYP.
MAX.
Unit
Distance measuring range
Output terminal voltage
Difference of output voltage
∆L
0.4
−
−
1.9
30
V
CC
−0.3
−
−
10
0.25
− cm
mA
Distance characteristics
of output
V
O
V
OH
∆V
O
V
OL
V
O
I
CC
L=80cm
*1
Output voltage at High
*1
Output voltage at Low
*1
Output change at L=80cm to 10cm
*1
L=80cm
*1
0.55
−
0.6
80
V
V
Average Dissipation current
1.65
2.15
24
21
27
40
V
V
cm
GP2Y0A21YK
GP2Y0D21YK
GP2Y0A21YK
GP2Y0D21YK
*1 *3
*1 *4 *2
(T
a
=25˚C, V
CC
=5V)
Note) L : Distance to reflective object
*1 Using reflective object : White paper (Made by Kodak Co. Ltd. gray cards R-27 ⋅ white face, reflective ratio ; 90%)
*2 We ship the device after the following adjustment : Output switching distance L=24cm±3cm must be measured by the sensor
*3 Distance measuring range of the optical sensor system
*4 Output switching has a hysteresis width. The distance specified by Vo should be the one with which the output L switches to the output H
Signal
processing
circuit
Voltage
regulator
Output
circuit
Oscillation
circuit
LED drive
circuit
V
CC
5V
V
o
Analog output
GND
PSD
LED
Distance measuring IC
GP2Y0A21YK
V
CC
5V
V
O
Digital output
GND
PSD
LED
GP2Y0D21YK
V
CC
12kΩ
Voltage
regulator
Output
circuit
Distance measuring IC
Signal
processing
circuit
Oscillation
circuit
LED drive
circuit
5.0ms
MAX.
(GP2Y0A21YK)
38.3ms±9.6ms
V
O
(Output)
Unstable output First output Second output
nth output
V
CC
(Power supply)
First measurment
Distance
measuring
operation
Second
measurment
nth
measurment
7.6ms±1.9ms
TYP.
(GP2Y0D21YK)