IC-WT Datasheet, PDF (1/13 Pages) IC-Haus GmbH – INCREMENTAL ENCODER

iC-WT
INCREMENTAL ENCODER
FEATURES
♦ Differential scanning for track A and B
♦ Constant-light-evaluated scanning for the index track Z with
adjustable relative threshold
♦ Photocurrent amplifier with high cut-off frequency
♦ Current comparators with hysteresis
♦ Index track Z selectable gated by tracks A and B
♦ Current-limited and short-circuit-proof push-pull outputs
♦ Outputs TTL compatible
♦ Adjustable LED current control for constant optical receiver
power
♦ Integrated 50mA driver for the transmit LED
♦ LED current monitoring and error message upon violating
the control range
♦ Low current consumption from single 5V power supply
◊ Option: enhanced temperature range -40..125°C
APPLICATIONS
♦ Photocurrent evaluation for
incremental linear or angular
position measuring systems
PACKAGES
SO16N
BLOCK DIAGRAM
+5V
LED
PHOTODIODES ARRAY
14 _DPA
DPA
15 _DNA
DNA
12 _DPB
DPB
13 _DNB
DNB
iC-OR
CLR
10nF
11 _DZ
DZ
8
10
9
16
RLR RZ
15kΩ 15kΩ
CLR
ILR
IZ
AGND
2
VCC
A³
TRACK A
+5V
OUT_A
B⁴
TRACK B
iC-WT
Z⁵
ERROR
TRACK Z
NERR ⁶
LED
LED ⁷
LED CURRENT CONTROL
GND
1
DRIVER
OUT_B
OUT_Z
ERROR
RLED
68Ω
©1997
iC-Haus GmbH
Integrated Circuits
Am Kuemmerling 18, D-55294 Bodenheim
Rev A0
Tel [phone]
Fax [phone]
http://www.ichaus.com