EVALNV1D ICHAUS [IC-Haus GmbH], EVALNV1D Datasheet

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EVALNV1D

Manufacturer Part Number
EVALNV1D
Description
6-BIT Sin/D FLASH CONVERTER
Manufacturer
ICHAUS [IC-Haus GmbH]
Datasheet
iC-NV
6-BIT Sin/D FLASH CONVERTER
FEATURES
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BLOCK DIAGRAM
Copyright © 2007, iC-Haus
Fast flash converter
Integrated glitch filter; minimum transition distance can be set
using the optional resistor
Selectable resolution of up to 64 steps per cycle and up to
16-fold interpolation
Integrated instrumentation amplifiers with adjustable gain
Direct connection of sensor bridges, no external components
required
200kHz input frequency with the highest resolution
Incremental A QUAD B output of up to 3.2MHz
Reversed A/B phase selectable
Index signal processing
Sensor bridge calibration supportable by analog/digital test
signals
Low power consumption from single 5V supply
TTL- /CMOS-compatible outputs
Inputs and outputs protected against destruction by ESD
APPLICATIONS
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PACKAGES
Angle interpolation from ortho-
gonal sinusoidal input signals
Linear and rotary encoders
MR sensor systems
TSSOP20
Rev C1, Page 1/19
www.ichaus.com

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EVALNV1D Summary of contents

Page 1

Sin/D FLASH CONVERTER FEATURES Fast flash converter Ë Integrated glitch filter; minimum transition distance can be set Ë using the optional resistor Selectable resolution steps per cycle and up to Ë 16-fold interpolation Integrated ...

Page 2

Sin/D FLASH CONVERTER DESCRIPTION iC- monolithic A/D converter which produces two digital A/B incremental signals phase-shifted at 90° from two sinusoidal input signals, also phase-shifted at 90°. The converter operates on the flash principle with fast ...

Page 3

Sin/D FLASH CONVERTER ABSOLUTE MAXIMUM RATINGS Values beyond which damage may occur; device operation is not guaranteed. Item Symbol Parameter G001 VCC Supply Voltage analog G002 VDD Supply Voltage digital G003 V() Voltage at NSIN, PSIN, NCOS, PCOS, ...

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Sin/D FLASH CONVERTER ELECTRICAL CHARACTERISTICS Operating Conditions: VCC= VDD= 5V ±10%, Tj= -40..125°C, unless otherwise noted Item Symbol Parameter Total Device 001 VCC, Permissible Supply Voltage VDD 002 I(VCC) Supply Current in VCC 003 I(VDD) Supply Current in ...

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Sin/D FLASH CONVERTER ELECTRICAL CHARACTERISTICS Operating Conditions: VCC= VDD= 5V ±10%, Tj= -40..125°C, unless otherwise noted Item Symbol Parameter Zero Comparator 701 Vos() Input Offset Voltage 702 Iin() Input Current 703 Vcm() Common-Mode Input Volt. Range 704 Vdm() ...

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Sin/D FLASH CONVERTER Fig. 3: Adjusting the minimum transition distance via resistor RCLK. Fig. 5: Temperature drift of the minimum transition distance versus 27°C (VDD= 5V). Fig. 7: Definition of the relative angle accuracy. Rev C1, Page 6/19 ...

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Sin/D FLASH CONVERTER DESCRIPTION OF FUNCTIONS Input Amplifiers Input stages SIN and COS are configured as instrumentation amplifiers. The gain is dependent on the amplitude of the input signal and set via pins SG0 and SG1 according to ...

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Sin/D FLASH CONVERTER A/B OUTPUT PHASE SELECTION ROT Input signals lo positive; COS leading SIN lo negative; SIN leading COS open positive; COS leading SIN open negative; SIN leading COS hi positive; COS leading SIN hi negative; SIN ...

Page 9

Sin/D FLASH CONVERTER Hysteresis iC-NV has an angular hysteresis which is independent of the input amplitude and phase. It prevents the outputs from switching when the inputs are static. The following diagram shows the effect this has with ...

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Sin/D FLASH CONVERTER Oscilloscope diagrams The following diagrams give the input and output signals for various directions of rotation and ROT settings for interpolation factors 1 and 16. Fig. 9: ROT= lo/open, COS leading SIN Fig. 11: ROT= ...

Page 11

Sin/D FLASH CONVERTER Test functions Device iC-NV features internal test functions which can be used to ease sensor bridge calibration procedures if such are required. To enable test operation, a threshold current of approx. 1mA present at pin ...

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Sin/D FLASH CONVERTER Description of test signals MODE 3 ZK un-gated index/zero comparator output EXKA all comparators EXOR-gated SIN, NSIN, COS, NCOS amplifier outputs (signal valid with no load only) MODE 0 KA(0) Comparator 0°-180° Duty cycle indicates ...

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Sin/D FLASH CONVERTER APPLICATIONS INFORMATION Principal Input Circuits Fig. 14: Input circuit for voltage signals of 1Vpp with no ground reference. When grounds are not separa- ted the connection NSIN to VREF must be omitted. Fig. 16: Input ...

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Sin/D FLASH CONVERTER Wiring photodiode arrays with common cathodes Fig. 19: Wiring scheme with offset adjustment possi- bility; the resistor values must be selected with re- spect to the photo currents available (eg. 65kΩ for max. 16µApk at ...

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Sin/D FLASH CONVERTER Wiring photodiode arrays with common anodes Fig. 22: Wiring scheme with offset adjustment possi- bility; the resistor values must be selected with respect to the photo currents available (eg. 65kΩ for max. 16µ ...

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Sin/D FLASH CONVERTER MR Sensor System Application Example Fig. 26: Complete MR sensor system for 24V environment featuring low-noise switch-mode power supply linear regulator combo iC-WD and line driver iC-WE, enabling data transmission via 100m cable length. The ...

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Sin/D FLASH CONVERTER DEMO BOARD The iC-NV device is equipped with a Demo Board for test purposes. Figures show the wiring as well as the top and bottom layout of the test PCB. Fig. 27: ...

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Sin/D FLASH CONVERTER This specification is for a newly developed product. iC-Haus therefore reserves the right to change or update, without notice, any information contained herein, design and specification; and to discontinue or limit production or distribution of ...

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Sin/D FLASH CONVERTER ORDERING INFORMATION Type Package iC-NV TSSOP20 4.4mm Demo Board For technical support, information about prices and terms of delivery please contact: iC-Haus GmbH Am Kuemmerling 18 D-55294 Bodenheim GERMANY Appointed local distributors: http://www.ichaus.de/support_distributors.php Order designation ...

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