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PRODUCT
RELATED PRODUCT
FEATURES
▶ 1.Photoelectric matrix arrangement technology
▶ 2.Operating temperature -40°C- +105°C
▶ 3.Variety of CPR can optical
▶ 4.C type,easy to use
▶ 5.Output TTL Compatibility
▶ 6.5V supply
APPLICATIONS
Typical application package scraping printer, plotter, servomotor, factory automation,etc.
Maximum using environment
Storage temperature | Ts | -40°C- +105°C |
Working tempearture | Ta | -40°C- +105°C |
Power supply | Vcc | -0.5V-7V |
Welding temperature | not exceed 260°C/5 seconds | |
Working frequency | f | 500KHz |
Reverse voltage of light sourse | Vr | 3V |
RECOMMENDED ENVIRONMENT
Working tempearture | Ta | -40°C- +105°C |
Power supply | Vcc ripple voltage <100 mV | 4.5V-5.5V |
ELECTRICAL PARAMETERS
Electrical parameters are measured in 25°C recommended environment
Parameters | Symbol | Min. | Typical | Max. | Unit | Conditions |
Forward voltage of light source | Vf | 1.8 | 2 | 2.1 | V | If=20mA |
Module operating current | Icc | 40 | 50 | 60 | mA | |
Accept the working current of the chip | Icc | 36 | 42 | mA | ||
Output low level | Vol | 0.4 | 0.5 | V | Internal 2k ohm pull up resistor | |
Output High Level | Voh | 4 | 4.5 | V | Internal 2k ohm pull up resistor | |
A/B/Z Rise Time | Tr | 160 | ns | internal 2 k ohmic pull up resistance CL=8 PF | ||
A/B/Z Lower Rise Time | Tf | 20 | ns | internal 2 k ohmic pull up resistance CL=8 PF | ||
AB duty cycle | Dt | 40 | 50 | 60 | % | |
AB phase difference | θ | 60 | 90 | 120 | °e | |
Response frequency | f | 500 | KHz |
WAVEFORM DIAGRAM

Figure 1 Output waveform of clockwise rotating A/B/Z (1/4T)1
Figure 2 Output waveform A/B/ZUG clockwise rotation
Module Mechanical Position Dimensions

PIN DEFINITION
PIN Name | Function | Input/Output |
Vcc | Power+, 5v | Power supply |
CH A | A channel output with 2K Ω pull resistance inside | Output |
CH B | B channel output with 2K Ω pull resistance inside | Output |
GND | Power ground | Power ground |
CH I (Z channel) | Zero bit Z signal output with pull-up resistance 2 Ω | Output |
NOTE:
▶ 1.The Z channel output has two choices, one is 1/4 T output, the other is zero bit original signal - ZUG output, ZUG output is about 1T, ZUG and A,B have no specified position relationship, but each device position is determined.
▶ 2.The zero bit output has the last bit of the model to select 1/4 T or the ZUG, The last digit is 1 means that the output of Z is Zug, the last digit 4 means that the output of Z is 1/4 T.
MODULE SELECTION GUIDE
RS91 series has a variety of options, according to the optical radius (ROP)=11 specific CPR selected as follows.

Attention: for other CPR, please contact us.
RS91 series of straight pin are named by LPI, as follows:

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