IC-PI datasheet(13/49 Pages) ICHAUS

tên linh kiện	IC-PI

Giải thích chi tiết về linh kiện	PROGRAMMABLE 12-BIT Sin/Cos INTERPOLATION IC WITH RS422 DRIVER

PDF	49 Pages

Scroll/Zoom	100%

nhà sản xuất	ICHAUS [IC-Haus GmbH]

Trang chủ	http://www.ichaus.biz

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13 / 49 page

preliminary

iC-PI PROGRAMMABLE 12-BIT

Sin/Cos INTERPOLATION IC WITH RS422 DRIVER

Rev B1, Page 13/48

0°

360°

180°

Converter

Error

INL: The maximum absolute error.

DNL: The maximum step

between two consecutive

samples.

Ideal converter

Actual converter

Angular Position

Figure 1: Integral and differential nonlinearity.

0°

360°

180°

Converter

Error

Systematic

Angle Error

Ideal converter

Actual converter

Angular Position

Angle Hysteresis

Figure 2: Systemic angle error due to hysteresis.

tMTD

t whi

T (100 %)

AArel

tAB

ABrel

Figure 3: Relative angle error and minimum edge dis-

tance.

0,1

100

1000

100

125

200

250

500

1000

Interpolation Factor IPF

MTD=0x0 (25 ns)

MTD=0x1 (50 ns)

MTD=0x2 (75 ns)

MTD=0x3 (100 ns)

MTD=0x4 (125 ns)

MTD=0x5 (150 ns)

MTD=0x6 (200 ns)

MTD=0x7 (300 ns)

MTD=0x8 (400 ns)

MTD=0x9 (550 ns)

MTD=0xA (800 ns)

MTD=0xB (1.0 µs)

MTD=0xC (1.3 µs)

MTD=0xD (1.6 µs)

MTD=0xE (3.2 µs)

MTD=0xF (6.4 µs)

Figure 4: Maximum input frequency depending on in-

terpolation factor. See also Table 45, page

32.

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