1999 Aug 30

4

Philips Semiconductors

Product specification

Dual BTL power driver

TDA7073A; TDA7073AT

PINNING

SYMBOL

PIN

DESCRIPTION

IN1

−

1

negative input 1

IN1

+

2

positive input 1

n.c.

3

not connected

n.c.

4

not connected

5

positive supply voltage

IN2

+

6

positive input 2

IN2

−

7

negative input 2

n.c.

8

not connected

OUT2

+

9

positive output 2

GND2

10

ground 2

n.c.

11

not connected

OUT2

−

12

negative output 2

OUT1

−

13

negative output 1

GND1

14

ground 1

n.c.

15

not connected

OUT1

+

16

positive output 1

Fig.2 Pin configuration.

handbook, halfpage

1

2

3

4

5

6

7

8

16

15

14

13

12

11

10

9

TDA7073A

TDA7073AT

OUT1+

GND1

P

V

n.c.

IN1–

IN1+

n.c.

OUT1 –

OUT2 –

n.c.

GND2

OUT2 +

n.c.

n.c.

IN2 –

IN2 +

MCD381

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

very high slew rate. Due to the large bandwidth, they can

handle PWM signals up to 176 kHz.