IC-NVH Datasheet, PDF (8/13 Pages) IC-Haus GmbH – 6-BIT Sin/D FLASH CONVERTER

iC-NVH
6-BIT Sin/D FLASH CONVERTER
A/B OUTPUT PHASE SELECTION
ROT
lo
lo
open
open
hi
hi
Input signals
positive; COS leading SIN
negative; SIN leading COS
positive; COS leading SIN
negative; SIN leading COS
positive; COS leading SIN
negative; SIN leading COS
Output signals A, B; Z
B leading A; Z
A leading B; Z
B leading A; MSB
A leading B; MSB
A leading B; Z
B leading A; Z
Rev D1, Page 8/13
Resolution, frequency ranges
Nine different resolutions or interpolation factors (IPF) can be programmed via inputs SF0 and SF1. Resolutions
16, 12 and 10 are generated at the core of the converter itself. Resolutions of less than 10 are produced by
division DIV in the digital processing unit. The minimum transition distance at outputs A and B corresponds to that
of the transition distance control multiplied by the divisor of the digital processing unit.
The minimum output transition distance (maximum output frequency) should be adjusted to tarry with the overall
system (bandwidth of the transfer medium, sampling rate of the counter). The maximum input frequency is
determined by the transition distance control and the resolution of the converter core (16, 12 or 10). This
frequency can be increased for resolutions of less than 10 with an external resistor at RCLK. The following table
gives possible settings.
RESOLUTION
SF1
SF0
IPF
hi
hi
16
hi
open
12
hi
lo
10
open
hi
8
open open
5
open
lo
4
lo
hi
3
lo
open
2
lo
lo
1
DIV
internal
division
1
1
1
2
2
4
4
8
16
fin_MAX
200 kHz, RCLK= 47 kΩ
260 kHz, RCLK= 47 kΩ
320 kHz, RCLK= 47 kΩ
400 kHz, RCLK= 23 kΩ
640 kHz, RCLK= 23 kΩ
800 kHz, RCLK= 12 kΩ
1.04 MHz, RCLK= 12 kΩ
1.6 MHz, RCLK= 6 kΩ
(3.2 MHz), RCLK= 3 kΩ
fin_MAX
for RCLK= VCC
or RCLK= 47 kΩ
200 kHz
260 kHz
320 kHz
200 kHz
320 kHz
200 kHz
260 kHz
200 kHz
200 kHz