IC-PI datasheet(32/49 Pages) ICHAUS

32 / 49 page

preliminary

iC-PI PROGRAMMABLE 12-BIT

Sin/Cos INTERPOLATION IC WITH RS422 DRIVER

Rev B1, Page 32/48

Signal monitoring and thresholds

ACOS(4:0) Vt()min ... max

0x00

0.72 V...2.34 V

0x19

1.2 V ...3.9 V

0x01

0.732 V...2.38 V

...

0x1F

1.44 V...4.68 V

Notes

All values nominal, see also Elec. Char. Nos. 605,

606

Table 42: Signal Monitoring

Note: Following power up and after the configura-

tion data has been read successfully, the sine/cosine

square control starts operation from a zero output

current.

Note: Excessive input signals or internal signal clip-

ping can interfere with the control operation, so that

the preset operating point may not be reached (upon

power up) or maintained (upon disturbances). Use

Control Error 2 and Signal Error 1 for monitoring and

configuring EMASKA accordingly.

Sum Control Mode

With sum control mode selected, the DC references

(VDC1 + VDC2) are used to adjust the output current of

pin ACO.

ACOS

Addr. 0x15, bit 5:1

Code

Sum control (ACOT = 01)

0x00

VDC1 + VDC2 ≈ 245 mV

0x01

VDC1 + VDC2 ≈ 249 mV

...

≈

245mV

77−(1.25∗Code)

0x1F

VDC1 + VDC2 ≈ 490 mV

Table 43: Sum Control Setting (DC average)

Constant Current Source

The constant current source is intended for signal con-

ditioning purposes, i.e. for the adjustment of gain, offset

and phase correction values independent of signal level

controlling.

ACOS

Addr. 0x15, bit 5:1

Code

Constant current source (ACOT = 10)

0x00

I(ACO) ≈ 3.125% Isc(ACO)

0x01

I(ACO) ≈ 6.25% Isc(ACO)

...

≈

3.125% ∗ (Code + 1) ∗ Isc(ACO)

0x1F

I(ACO) ≈ 100% Isc(ACO)

Notes

For tolerances of Isc(ACO) see Elec. Char. No. 602.

Table 44: Current Source Setting (ACO output current)

IC-PI датащи(PDF) 32 Page - IC-Haus GmbH

IC-PI датащи(HTML) 32 Page - IC-Haus GmbH

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49

датащи скачать

ссылки URL