IC-LG Datasheet, PDF (2/2 Pages) IC-Haus GmbH – 21-BIT OPTICAL POSITION ENCODER WITH SERIAL/PARALLEL AND SIN/COS OUTPUT

iC-LG 21-BIT OPTICAL POSITION ENCODER
The differential evaluation of all tracks enables operation at
high ambient temperatures. Scanning uses pre- and post-posi-
tioned photosensors for each track, permitting high adjustment
tolerances during system assembly. An integrated LED power
control with a highside driver guarantees illumination regard-
less of temperature or aging effects.
The chip features offset and amplitude calibration for the
analog output signals also fed to the integrated 3-bit flash and
the 8-bit SAR interpolators.
External multiturn sensor slaves can be operated via an
SSI interface. Here, iC-LG is master and synchronizes all data
to produce a contiguous, single-step-proof position data word.
Additionally, temperature data is available from an on-chip sen-
sor, featuring adjustable high/low alarms to monitor encoder
and drive operation.
The fast BiSS interface (SSI mode is optional) and an 8-bit
microcontroller interface are available to output the position
data and to configure the chip. An external EEPROM can also
provide setup and OEM data.
Pin Functions
BiSS µC PAR Interface Mode
No. Name
Pin Function
1
NDIR
Reversal of Rotation Dir. Input
2
SYNC
D(10) Synch. Input / Parallel Data Output
3
NPRES
Preset Input / Alignment Mode Enable
4
NRES
Reset Input / Reset Active Message
5
NRD D(9) Read Signal / Par. Data Output
6
NWR D(8) Write Signal / Par. Data Output
9
VREF
+2.5 V Reference Voltage Output
10 RSET
LED Power Control Adjustment
13...20
P(7...0) D(7...0) Data Bus µC / Par. Data Output
21 SCL
Clock Output, Configuration Interface
22 SDA
Data Line, Configuration Interface
23 VDDM
+5 V Multiturn Functions Supply Voltage
24 LVCC
+5 V LED Driver Supply Voltage
25 LED
LED Current Source Output
26 VNCOS
Cosine Voltage Output (inverted)
(Alignment Mode: Voltage Output D0)
27 ICOS
Cosine Current Output
28 VNSIN
Sine Voltage Output (inverted)
(Alignment Mode: Voltage Output D1)
29 ISIN
Sine Current Output
30 VCCA
+5 V Analog Supply Voltage
31 AGND
Analog Ground
32 GND
Digital Ground
33 VDD
+5 V Digital Supply Voltage
34 NERR
Error Message I/O
35
NL Output Latch Enable Input
36 MDI
Data Input, Multiturn Interface
37 MCL
D14 Clock Output, Multit. / Par. Data Output
38 SLO
D13 Data Output, BiSS / Par. Data Output
(Alignment M.: V1 xor V13, Test M.: TP)
39 MA
D12 Clock Input, BiSS / Par. Data Output
40 SLI
D11 Data Input, BiSS / Par. Data Output
7, 8, 11, 12
Test Mode Current Input
Key Specifications
General
Supply Voltage
Supply Current
On-Chip Oscillator
LED Power Control
ESD Susceptibilty
Operational
Temperature Range
Chip Size
Packages
Options
single 4 V to 5.5 V
typ. 10 mA
5 MHz
50 mA max. (highside current source output)
2 kV (HBM 100 pF, 1.5 kΩ)
-20 °C to +90 °C
(-40 °C to +125 °C optional)
3.5 mm x 7 mm
40-pin BLCC LG5C (10.2 x 11.9 x 1.7 mm)
smaller optoBGA package on request
on-chip reticle, code discs
Position Acquisition
Max. Singleturn Resolution
Max. Multiturn Resolution
Angle Resolution (disc LG2S)
Absolute Angle Accuracy
Max. Operating Speed
21 bits / 360° (extendable by
consecutive electronics)
24 bits
11+3 bits, 11+8 bits (524,288 CPT)
+/- 1 LSB @ 19 bits
(mounted within 0.7 DEG tilt angle)
12,000 RPM
Temperature Monitoring
Range, Resolution -64 °C to +191 °C, resolution 1 °C (LSB)
Alarm Output
adjustable high/low alarm thresholds
Data I/O
BiSS Interface
µC Interface
Multiturn Sensor
Interface
Analog Outputs
Serial EEPROM
serial two-wire link, triggered position capture,
data rate of up to 15 Mbit/s (SSI mode: 4 Mbit/s)
8-bit data bus, 1 MHz access cycle per byte
SSI, 200 kbit/s, 12+1 to 24+1 bit, binary coded
(single word) or Gray coded (3 to 6 words)
sine/cosine wave output to 500 kHz,
0.5 Vpp calibrated
100 kbit/s, compatible with I2C, 1 to 16 kbits
RAM
Position Data
Temperature Data
Calibration Data
Configuration Data
3 bytes for singleturn (with interpolation),
3 bytes for multiturn
1 byte
5 bytes (analog signals and temperature sensor
calibration)
27 bytes for configuration, 8 bytes for device ID
Operational Functions
Device Configuration via EEPROM, BiSS, µC Interface
Parameterization
resolution, disc model, multiturn functions, out-
put code format, sense of rotation, alarm mes-
sages
Position Preset
selectable by pin, BiSS, µC Interface
Monitoring & Alarm missing code, corrupted single/multiturn data
(disc error), EEPROM link error, illumination error
(end of life), out-of-range temperature
Test Modes
Alignment Modes
analog sensor stimulation
radial position and tilt angle alignment aids
Am Kuemmerling 18 • D-55294 Bodenheim, Germany
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