iC-NG
8-BIT Sin/D CONVERTER-PROCESSOR
Rev D3, Page 1/21
FEATURES
Ë
Real-time interpolator with a programmable resolution of up to
256 steps/period
Ë
Calibration features permit adaptation of distorted sine/cosine
signals
Ë
Output with A/B/Z incremental signals of up to 400kHz, as a
parallel 8-bit absolute vector or via a serial interface
Ë
Error messaging with excessive input frequency
Ë
Programmable index position
Ë
Fast 24-bit multiturn counting (position capture with target
position interrupt)
Ë
8-bit µP interface
Ë
Interrupt controller
Ë
Adjustable clock oscillator
Ë
Front-end amplifiers configurable externally
Ë
Chip setup can be loaded from a serial EEPROM
Ë
TTL-compatible inputs, TTL-/CMOS-compatible outputs
Ë
Inputs and outputs protected against destruction by ESD
APPLICATIONS
Ë
Absolute and incremental angle
interpolation from orthogonal
sinusoidal input signals
Ë
Interpolating interface for MR
sensors and optical analog
encoders
PACKAGES
SO28
SSOP28
BLOCK DIAGRAM
14
VDD
CLK INPUT/OSCILLATOR
13
RCLK
28
SCL
27
SDA
26
NRES
NRD
SERIAL EEPROM
INTERFACE
3
4
STATE CONTROL
µP INTERFACE
R/f
NWR
2V
SINE / DIGITAL CONVERTER
PGA
A × sin
24
23
22
SIN
NSIN
PSIN
Comparator
Resolution, Hysteresis
D0
D1
5
6
7
8
9
10
11
12
Binary
Up/Down Counter
INPUT SIN
Segment
MUX
A × sin
tan(phi)
D2
D3
D4
21
20
19
COS
NCOS
PCOS
tan
phi
D/A
D5
D6
TAN D/A
Converter
A × cos
OFFS
Converter Function Adaptation
(per segment)
D7
INPUT COS
18
17
16
ZERO
NZERO
PZERO
4-FOLD EDGE
EVALUATION
internal data bus
phi
A4
DIGITAL SIGNAL PROCESSING
REFERENCE
VOLTAGE
2.4V
B4
24-Bit Counter
RPM/Speed Aquisition
Interrupt Controller
Index/Zero Pulse Justification
Incremental Signal Generator
Mode Switch (Frequency Overrun)
MFP
2
INPUT INDEX/ZERO
iC-NG
NER
1
15
VREF
Z4
ERROR MONITOR
GND
25
Copyright © 2006, iC-Haus
http://www.ichaus.com
ICHAUS [ IC-HAUS GMBH ]
