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零件编号 | HOA0902 | ||
描述 | Transmissive Encoder Sensor | ||
制造商 | Honeywell | ||
LOGO | |||
1 Page
HOA0902
Transmissive Encoder Sensor
FEATURES
• Dual channel IC
• Direct TTL interface
• Resolution to 0.018 in.(.457)
• Internal temperature compensation
m• 0.126 in.(3.2 mm) slot width
o• Two mounting configurations
.cDESCRIPTION
UThe HOA0902 assembly consists of a dual channel IC
detector and an IRED encased in a black thermoplastic
housing. The device is typically used with an interrupter
t4strip or disk (code wheel) to encode the rate and
direction of mechanical motion. Applications include
linear and rotary encoders; it is especially suited for the
eencoding function in an optical mouse.
eThe detector is a monolithic IC which consists of two
narrow adjacent photodiodes, amplifiers stages and
hquadrature logic circuitry which provides two outputs;
(1) a fixed-duration, low level active tachometer
(counting) pulse which is generated whenever the
Sillumination level passes through the sensing threshold,
and (2) a direction output which is set to a logic high or
talow level dependent on which of the two channels is
illuminated first. The tachometer output is an NPN
collector which is internally connected to VÙÙ through a
10 kì (nominal) resistor; the direction output is a totem-
apole configuration. Both outputs are capable of directly
driving TTL loads. The IC design incorporates circuitry
.Dto compensate the sensitivity for the output power vs.
temperature characteristic of the IRED.
The tachometer pulse is generated at both the
increasing and decreasing illumination thresholds of the
wsensing channel, resulting in two tach pulses for each
mechanical period of the interrupter. The HOA0902 is
wdesigned to work with a mechanical period as small as
0.036 in.(.914 mm), providing resolution to 0.018
in.(.457 mm). For additional component information see
wSEP8506 and HLC2705.
INFRA-78.TIF
OUTLINE DIMENSIONS in inches (mm)
Tolerance 3 plc decimals ±0.005(0.12)
2 plc decimals ±0.020(0.51)
HOA0902-011
.315(8.0) .419(10.64)
.488
(12.40)
OPTICALCL
.181(4.60)
.126(3.20)
LEADS
.100(2.54)
1. CATHODE
2. ANODE
3. SPEED
4. GND
5. Vcc
6. DIRECTION
DIM_060.ds4
HOA0902-012
.020(0.51) SQ.
LEADS TYP.
.075(1.91)
.050
.083(2.1)
.05(1.27)
3 PLCS
.300(7.62)
46
35
12
.100(2.54)
.090(2.3)
.500(12.7) MIN
Housing material is polycarbonate. Housings are
soluble in chlorinated hydrocarbons and ketones.
Recommended cleaning agents are methanol and
isopropanol.
DIM_060b.cdr
220
h
Honeywell reserves the right to make
changes in order to improve design and
supply the best products possible.
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页数 | 4 页 | ||
下载 | [ HOA0902.PDF 数据手册 ] |
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