TDA7072A Datasheet, PDF (6/10 Pages) NXP Semiconductors – Single BTL power driver

Philips Semiconductors
Single BTL power driver
APPLICATION INFORMATION
Objective specification
TDA7072A/AT
handbook, full pagewidth
SERVO SYSTEM
1
TDA7072A
TDA7072AT
driver signal
Vref
2
R _{s 500 Ω}
3
I+i
I –i
(1)
100 nF
220 µF
VP = 5 V
5
(2)
RL
8
4
6
7
n.c.
n.c.
(1) This capacitor can be omitted if the 220 µF electrolytic capacitor is connected close to pin 1.
(1) R_L can be: focus, tracking, sled function or spindle motor.
Fig.3 Test and application diagram.
ground
MCD379
+ (VP – 2.1) V
0V
MCD380 ^{– (VP – 2.1) V}
Fig.4 Typical output voltage swing over R_L.
July 1994
6