IC-LNB Datasheet, PDF (2/2 Pages) IC-Haus GmbH – 18-BIT OPTICAL ENCODER WITH SPI AND SERIAL/PARALLEL OUTPUTS

iC-LNB
18-BIT OPTICAL ENCODER WITH SPI AND SER/PAR OUTPUTS
An integrated LED current control with a driver stage allows
a transmitting LED to be directly connected (e.g. iC-SN85).
The optical receive power is kept constant by the control unit,
regardless of temperature and aging effects. The receive power
setpoint can be programmed. Should the LED current control
exit its operating range, this is indicated at the error message
output (end-of-life alarm at pin ERR).
The photocurrent offset and photocurrent amplitude of the ana-
log sine/cosine signals can be calibrated. These calibrated volt-
age signals are lead out to pins PSIN, NSIN, PCOS, and NCOS
and are used by the integrated 8-bit vector-tracking interpola-
tion circuit.
iC-LNB synchronizes the interpolator and singleturn data to form
a contiguous Gray-coded position data word. 16 parallel ports,
a scalable shift-register, the SPI interface, as well as incremen-
tal A/B/Z signals are available for data output. By help of the
unique FlexCount^® circuit any angle resolution between 1 to
2¹⁶ angle steps per revolution can be preset for the incremental
signals and the absolute position value.
After startup iC-LNB is configured using the SPI interface. To
make connection to a 3.3 V microcontroller easier, all digital I/O
ports, including the SPI, can be run on 3.3 V.
Key Specifications
General
Supply Voltage
I/O Port
Supply Voltage
I/O Port
Characteristics
LED Current Control
ESD Susceptibility
Operational
Temperature
Packages
(RoHS compliant)
+4 V to +5.5 V, typ. 15 mA
+3 V to +5.5 V
CMOS/TTL compatible, ±2 mA @ 3.3 V,
±3.5 mA @ 5 V
up to 50 mA
2 kV (HBM 100 pF, 1.5 kΩ)
-40 °C to +110 °C
30-pin optoBGA LNB2C (7.6 x 7.1 x 1.8 mm)
38-pin optoQFN (5.0 x 7.0 x 0.9 mm)
Position Acquisition
Singleturn Resolution up to 18 bits / 360° @ sin/cos 1024 CPR
Absolute Angle
Accuracy
±1 LSB @ 16 bits
Operating Speed
12,000 RPM @ 16 bits
6,000 RPM @ 17 bits
3,000 RPM @ 18 bits
Interpolation
Sin/Cos Input
Frequency
Resolution
200 kHz @ 6 bits, 100 kHz @ 7 bits,
50 kHz @ 8 bits
6 bits to 8 bits (absolute outputs)
FlexCount®
Selectable resolution 1 to 16,384 CPR
Index Position
programmable, to all positions
Data Interfaces
SPI
Serial Shift Register
Parallel Outputs
Incremental Outputs
Sin/Cos Outputs
10 MHz, 3.3 V and 5 V, for configuration and
position data
up to 16 MHz, 12 bits to 18 bits
up to 6.6 MHz, 16 bits
A/B to 6.6 MHz, 90° or 180° Z index
500 mVpk (calibrated), up to 200 kHz,
load 1 mA max.
Available Accessories
LED
iC-SN85 BLCC SN1C
Code Disc
LNB1S 42-1024 (glass 1mm, OD Ø 42.0 mm,
ID Ø 18.0 mm, optical radius 17.6 mm, 1024 ppr)
Pin Functions
Name
VDD
GND
VDDA
GNDA
SCK
MOSI
MISO
CS
DIR
NSL
DIN
DOUT
CLK
PO8
PO7
PO6
POK
INCA
INCB
INCZ
PSIN
NSIN
PCOS
NCOS
LED
ERR
TPS
TPC
TNC
TNS
Function
+3 V to +5.5 V I/O Port Supply Voltage
I/O Port Ground
+4 V to +5.5 V Supply Voltage
Ground
SPI Clock Input
SPI Data Input
SPI Data Output
SPI Chip Select
Code Direction / Parallel Output Bit 13
Shift Register Load / Parallel Output Bit 12
Shift Register Data Input / Parallel Output Bit 11
Shift Register Data Output / Parallel Output Bit 10
Shift Register Clock Input / Parallel Output Bit 9
Parallel Output Bit 8
Parallel Output Bit 7
Parallel Output Bit 6
Power OK Message / Parallel Output Bit 5
Incremental Output A / Parallel Output Bit 2
Incremental Output B / Parallel Output Bit 3
Incremental Output Z / Parallel Output Bit 4
Analog Voltage Output PSIN
Analog Voltage Output NSIN
Analog Voltage Output PCOS
Analog Voltage Output NCOS
LED Current Control (Highside Output)
Error Message Output
Test Input PSIN / Parallel Output Bit 1
Test Input PCOS / Parallel Output Bit 0
Test Input NCOS / Parallel Output Bit 15
Test Input NSIN / Parallel Output Bit 14
This preliminary information is not tantamount to a guarantee of device characteristics. All rights to technical changes reserved
Am Kuemmerling 18 • D-55294 Bodenheim, Germany
Tel. [phone] • Fax [phone] • http://www.ichaus.com
Rev. 2.0