AN1139 STMicroelectronics, AN1139 Datasheet - Page 58

no-image

AN1139

Manufacturer Part Number
AN1139
Description
L6254 - L6268 - L6269 12V DISK DRIVE POWER COMBO IC
Manufacturer
STMicroelectronics
Datasheet
AN1139 APPLICATION NOTE
Figure 39b. Mathcad Analisys of the Voice Coil Current Loop
58/64
OPEN LOOP RESPONSE
20 log(
arg(
.
H( ) n
H( ) n
H( ) n
)
.
360
. 2
H1( ) n H2( ) n H3( ) n
)
180
140
100
50
40
30
20
10
100
140
10
20
30
40
50
60
20
0
20
60
10
.
.
100
MAGNITUDE RESPONSE in DB
PHASE RESPONSE in Degrees
1000
H( ) 1
f( ) n
=
949.152
1 10
4
1 10
5
1 10
6
0

Related parts for AN1139