GP2Y0A21YK Datasheet, PDF (2/4 Pages) Sharp Electrionic Components – General Purpose Type Distance Measuring Sensors

I Recommended Operating Conditions
Parameter
Symbol Rating Unit
Operating supply voltage
V_CC 4.5 to +5.5
V
GP2Y0A21YK/GP2Y0D21YK
I Electro-optical Characteristics
Parameter
Distance measuring range
GP2Y0A21YK
Output terminal voltage _GP2Y0D21YK
Difference of output voltage GP2Y0A21YK
Distance characteristics
of output
GP2Y0D21YK
Symbol
∆L
VO
VOH
VOL
∆VO
VO
Conditions
*1 *3
L=80cm ^*1
Output voltage at High ^*1
Output voltage at Low^*1
Output change at L=80cm to 10cm^*1
*1 *4 *2
MIN.
10
0.25
VCC −0.3
−
1.65
21
TYP.
−
0.4
−
−
1.9
24
Average Dissipation current
ICC
L=80cm ^*1
−
30
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
(Ta=25˚C, VCC=5V)
MAX. Unit
80
cm
0.55
V
−
V
0.6
V
2.15
V
27
cm
40
mA
Fig.1 Internal Block Diagram
Fig.2 Internal Block Diagram
GP2Y0A21YK
GND
VCC 5V
GP2Y0D21YK
GND
VCC 5V
PSD
LED
Signal
processing
circuit
LED drive
circuit
Voltage
regulator
Oscillation
circuit
Output
circuit
Distance measuring IC
Vo
Analog output
PSD
LED
Signal
processing
circuit
LED drive
circuit
Voltage
regulator
Oscillation
circuit
Output
circuit
Distance measuring IC
V_CC
12kΩ
VO
Digital output
Fig.3 Timing Chart
VCC
(Power supply)
Distance
measuring
operation
38.3ms±9.6ms
First measurment
Second
measurment
nth
measurment
VO (Output)
Unstable output
First output
Second output
5.0ms^MAX.(GP2Y0A21YK)
7.6ms±1.9ms^TYP.(GP2Y0D21YK)
nth output