TDA7285 ST Microelectronics, TDA7285 Datasheet - Page 8

• Manufacturer Part Number: TDA7285
• Description: STEREO CASSETTE PLAYER AND MOTOR SPEED CONTROLLER
• Manufacturer: ST Microelectronics

TDA7285
APPLICATION INFORMATION
Figure 21.
R
V
linearly adjustable varing R
8/11
S
M
has to be adjusted so that the applied voltage
is suitable for a given motor, the speed is then
E
g
[ 1
R
T
I
d
R
R
b
S
I
M
R
R
R
T
S
K
T
B
.
1
R
M
K
1
]
V
ref
The value R
R
if R
The values of C15 (4.7 F typ.) and C14 (1 F
typ.) depend on the type of motor used. C15 ad-
justs WOW and flutter of the system. C14 sup-
presses motor spikes.
T (max.)
T (max.)
> K
> K * R
(min.)
T
is calculated so that
* R
M
, instability may occur.
M (min.)