IC-MQF_15 Datasheet, PDF (27/38 Pages) IC-Haus GmbH – Sin/Cos INTERPOLATION IC WITH RS422 DRIVER

iC-MQF PROGRAMMABLE 12-BIT ^preliminary
Sin/Cos INTERPOLATION IC WITH RS422 DRIVER
Addr 0x15, bit 5:1
ACOS (4:0)
Code
Sum control ACOT = 01
0x00
VDC1 + VDC2 ≈ 245 mV
0x01
...
0x1F
VDC1 + VDC2 ≈ 249 mV
...
VDC1 + VDC2 ≈ 490 mV
≈
245mV
77
77−(1.25∗Code)
Table 36: Sum Control Setpoint (DC average)
Rev C1, Page 27/38
Addr 0x15, bit 5:1
ACOS (4:0)
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
See Elec. Char. No. 602 for Isc(ACO)
Table 37: Current Source Setpoint (ACO output cur-
rent)
SINE-TO-DIGITAL CONVERSION
SELRES
Value
0x0001
0x0002
0x0004
0x0005
0x0008
0x000A
0x0014
0x0019
0x0028
0x0032
0x0064
0x007D
0x00C8
0x00FA
0x01F4
0x03E8
Notes
Addr 0x21, bit 6:0; Addr 0x20, bit 7:0
STEP
Angle Steps
Per Period
IPF
Interpolation
Factor
fin()max
Permissible Input
Frequency
(@ MTD)
4
1
200 kHz (0x1)
8
2
200 kHz (0x1)
16
4
200 kHz (0x1)
20
5
200 kHz (0x1)
32
8
200 kHz (0x1)
40
10
200 kHz (0x1)
80
20
166 kHz (0x1)
100
25
133 kHz (0x1)
160
40
83 kHz (0x1)
200
50
66 kHz (0x1)
400
100
20 kHz (0x4*)
500
125
16 kHz (0x4*)
800
200
7.1 kHz (0x6*)
1000
250
5.7 kHz (0x6*)
2000
500
2.5 kHz (0x7*)
4000
1000
0.8 kHz (0x8*)
Other settings are not allowed.
*) Recommended MTD setting, refer to Design
Review page 36.
Table 38: Converter Resolution
iC-MQF’s converter resolution is selected with SELRES.
For a resolution of 4, four angle steps per input signal
period are generated so that the switching frequency at
the A and B output matches the sine frequency at the
input.
The programmable converter hysteresis is determined
by SELHYS. It is set in multiples of the increment size
and may have a maximum of 45° of the input signal
period.
SELHYS
Code
0x0
0x1
0x2
0x3
0x4
0x5
0x6
0x7
Addr 0x1F, bit 3:0
Function
Code
nearly none 0x8
0.09°
0x9
0.18°
0xA
0.36°
0xB
0.45°
0xC
0.72°
0xD
1.0°
0xE
1.5°
0xF
Function
2.0°
4.0°
6.0°
8.0°
10.0°
11.25°
22.5°
45°
Table 39: Converter Hysteresis