Philips Semiconductors
Product specification
Dual BTL power driver
PINNING
SYMBOL
IN1−
IN1+
n.c.
n.c.
V
P
IN2+
IN2−
n.c.
OUT2+
GND2
n.c.
OUT2−
OUT1−
GND1
n.c.
OUT1+
PIN
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
DESCRIPTION
negative input 1
positive input 1
not connected
not connected
positive supply voltage
positive input 2
negative input 2
not connected
positive output 2
ground 2
not connected
negative output 2
negative output 1
ground 1
not connected
positive output 1
handbook, halfpage
TDA7073A; TDA7073AT
IN1–
IN1+
n.c.
n.c.
VP
IN2 +
IN2 –
n.c.
1
2
3
4
16
15
14
13
OUT1+
n.c.
GND1
OUT1 –
TDA7073A
TDA7073AT
12 OUT2 –
5
6
7
8
MCD381
11
10
9
n.c.
GND2
OUT2 +
Fig.2 Pin configuration.
FUNCTIONAL DESCRIPTION
The TDA7073A/AT are dual power driver circuits in a BTL
configuration, intended for use as a power driver for servo
systems with a single supply. They are particular designed
for compact disc players and are capable of driving focus,
tracking, sled functions and spindle motors.
Because of the BTL configuration, the devices can supply
a bi-directional DC current in the load, with only a single
supply voltage. The voltage gain is fixed by internal
feedback at 33.5 dB and the devices operate in a wide
supply voltage range (3 to 18 V). The devices can supply
a maximum output current of 0.6 A. The outputs can be
short-circuited over the load, to the supply and to ground
at all input conditions. The differential inputs can handle
common mode input voltages from ground level up to
(V
P
−
2.2 V with a maximum of 10 V). The devices have a
very high slew rate. Due to the large bandwidth, they can
handle PWM signals up to 176 kHz.
1999 Aug 30
4
PHILIPS [ NXP SEMICONDUCTORS ]
