iC-LTA
preliminar y
Rev B1, Page 1/13
6-CH. INCREMENTAL OPTO ENCODER ARRAY
FEATURES
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Monolithic photodiode array with excellent signal matching
Very compact size for small encoders
Moderate track pitch for relaxed assembly tolerances
Low noise signal amplifiers with high EMI tolerance
Single-pin programming of 3 operating modes:
analog, digital, and x2 interpolated
Analog signals for alignment and resolution enhancement
Selectable index gating: 1 T, 0.5 T (B-gated), 0.25 T (AB-gated)
Complementary outputs: A, B, Z and NA, NB, NZ
High output frequency for speedy drives and high resolution
U, V, W commutation signals, analog and digital
All outputs +/- 4 mA push-pull, current-limited and
short-circuit-proof
LED power control with 40 mA high-side driver
Single 3.5 V to 5.5 V operation, low power consumption
Operating temperature range of -40 °C to +110 °C (+120 °C)
Space saving optoQFN / optoBGA packages (RoHS compliant)
Custom made code disc and reticle designs on request
APPLICATIONS
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Incremental encoder
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Brushless DC motor
commutation
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Industrial drives
PACKAGES
32-pin optoQFN
5 mm x 5 mm x 0.9 mm
15-pin optoBGA
6.2 mm x 5.2 mm x 1.7 mm
BLOCK DIAGRAM
+3.5..5.5V
C1
1μF
iC-LTA
PA
NA
PB
NB
PZ
NZ
POWER-ON RESET
TIP
TIN
SEL
LED
POWER
CONTROL
VCC
LED
PA
NA
PB
NB
PZ
D1
SIGNAL
COMPARATION
AND
QUADRATURE
OUTPUT
R1
47
INDEX
OUTPUT
NZ
T1
U
U
V
W
COMMUTATION
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+
V
W
GND
CA
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