iC-OG
8-BIT DIFFERENTIAL SCANNING OPTO ENCODER
Rev C1, Page 1/9
FEATURES
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Monolithic construction with integrated photodiodes ensures
excellent matching and technical reliability
Short track spacing of 600 µm
Elimination of dark currents through differential scanning
Photocurrent amplifier with high cut-off frequency
Comparators with precise signal-related hysteresis
Current-limited push-pull outputs
Adjustable LED current control for constant received power
Integrated power driver for the LED
LED current monitor with error message output
Integrated test aid
Low power consumption from 5V supply voltage
Available as a 20-pin BLCC or as chip
Options: extended temperature range of -40..110 °C,
customized packages, reticle assembly
APPLICATIONS
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Optical position decoding using
the principle of differential
scanning
Incremental and absolute
encoder with a resolution of up
to 8 bits
CHIP
3.05mm × 5.1mm
BLOCK DIAGRAM
5V +/- 10%
20
C1
100nF
7
R1
27kΩ
C2
100nF
6
1
ISET
AGND
VCC
VCC
12 : 1
1.2V
LED
5
R2
30Ω
D1
LED
R3
10kΩ
LED-CURRENT CONTROL
DDC
AMPLIFIER
MONITOR
NER
10
ERROR
CSR
AMPLIFIER
COMPARATOR
IP
IN
PUSH-PULL
OUTPUT
S0
NI0
19
2
18
3
17
4
DP0
DN0
ANALOG
OUTPUT
TRACK 0
S1
DP1
DP2
DN1
DN2
AMPLIFIER
(see TRACK 0)
TRACK 1
TRACK 2
PUSH-PULL
OUTPUT
NI1
S2
(see TRACK 0)
NI2
COMPARATOR
S3
16
DP3
DN3
TRACK 3
S4
15
DP4
DP5
DP6
DP7
9
8
TIP
DN4
DN5
DN6
DN7
(see TRACK 3)
TRACK 4
S5
14
(see TRACK 3)
TRACK 5
S6
13
(see TRACK 3)
TRACK 6
S7
12
(see TRACK 3)
TRACK 7
c2
1
TEST
TIN
BIAS
c2
1
iC-OG
BLCC OGC
1.2V
GND
11
Copyright © 1999, 2010, iC-Haus
www.ichaus.com
ICHAUS [ IC-HAUS GMBH ]
