www.freeservicemanuals.info
INTEGRATED CIRCUITS
TDA7073A/AT
Dual BTL power driver
Product specification |
|
July 1994 |
|||||
File under Integrated Circuits, IC01 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
www.freeservicemanuals.info
Philips Semiconductors |
Product specification |
|
|
Dual BTL power driver |
TDA7073A/AT |
|
|
|
|
FEATURES
∙No external components
∙Very high slew rate
∙Single power supply
∙Short-circuit proof
∙High output current (0.6 A)
∙Wide supply voltage range
∙Low output offset voltage
∙Suited for handling PWM signals up to 176 kHz
∙ESD protected on all pins.
GENERAL 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 specially designed for compact disc players and are capable of driving focus, tracking, sled functions and spindle motors.
QUICK REFERENCE DATA
Missing Current Limiter (MCL)
A MCL protection circuit is built-in. The MCL circuit is activated when the difference in current between the output terminal of each amplifier exceeds 100 mA (typical 300 mA). This level of 100 mA allows for headphone applications (single-ended).
SYMBOL |
PARAMETER |
CONDITIONS |
MIN. |
TYP. |
MAX. |
UNIT |
|
|
|
|
|
|
|
VP |
positive supply voltage range |
|
3.0 |
5.0 |
18 |
V |
Gv |
internal voltage gain |
|
32.5 |
33.5 |
34.5 |
dB |
IP |
total quiescent current |
VP = 5 V; RL = ∞ |
− |
8 |
16 |
mA |
SR |
slew rate |
|
− |
12 |
− |
V/μs |
|
|
|
|
|
|
|
IO |
output current |
|
− |
− |
0.6 |
A |
Ibias |
input bias current |
|
− |
100 |
300 |
nA |
fco |
cut-off frequency |
−3 dB |
− |
1.5 |
− |
MHz |
ORDERING INFORMATION
EXTENDED TYPE |
|
|
PACKAGE |
|
|
|
|
|
|
|
|
NUMBER |
PINS |
PIN POSITION |
|
MATERIAL |
CODE |
|
|
||||
|
|
|
|
|
|
TDA7073A |
16 |
DIL |
|
plastic |
SOT38 |
|
|
|
|
|
|
TDA7073AT |
16 |
mini-pack |
|
plastic |
SOT162A |
|
|
|
|
|
|
Notes
1.SOT38-1; 1996 August 22.
2.SOT162-1; 1996 August 22.
July 1994 |
2 |
www.freeservicemanuals.info
Philips Semiconductors |
Product specification |
|
|
Dual BTL power driver |
TDA7073A/AT |
|
|
positive input
negative input
positive input
negative input
VP |
|
|
|
|
5 |
|
|
|
|
|
I |
+ |
i |
16 |
2 |
|
|
|
|
1 |
|
Ι |
|
|
1 |
|
|
|
|
|
|
|
|
|
1 |
|
|
|
|
|
I |
– |
i |
13 |
TDA7073A |
|
|
SHORT - CIRCUIT AND |
|
|
|
THERMAL PROTECTION |
||
TDA7073AT |
|
|
||
|
|
|
|
|
|
I |
– |
i |
12 |
6 |
|
|
|
|
2 |
ΙΙ |
|
|
|
7 |
|
|
||
|
|
|
|
|
2 |
|
|
|
|
|
I |
+ |
i |
9 |
|
|
|
|
3, 4, 8, 11, 15 |
10 |
|
|
14 |
|
ground 2 |
ground 1 |
n.c. |
||
positive output 1
negative output 1
negative output 2
positive output 2
MCD382 - 1
Fig.1 Block diagram.
July 1994 |
3 |
www.freeservicemanuals.info
Philips Semiconductors |
Product specification |
|
|
Dual BTL power driver |
TDA7073A/AT |
|
|
PINNING
SYMBOL |
PIN |
DESCRIPTION |
|
|
|
IN1− |
1 |
negative input 1 |
|
|
|
IN1+ |
2 |
positive input 1 |
|
|
|
n.c. |
3 |
not connected |
|
|
|
n.c. |
4 |
not connected |
|
|
|
VP |
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 |
|
|
|
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 (VP −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.
handbook, halfpage
IN1– |
1 |
|
|
|
16 |
OUT1+ |
IN1+ |
|
|
|
|
|
n.c. |
2 |
|
|
|
15 |
||
|
|
|
|
|
|
|
n.c. |
3 |
|
|
|
14 |
GND1 |
|
|
|
|
|
|
|
n.c. |
4 |
|
TDA7073A |
|
13 |
OUT1 – |
|
|
|
|
|
|
|
VP |
|
|
TDA7073AT |
|
|
|
5 |
|
12 |
OUT2 – |
|||
|
|
|
|
|
|
|
IN2 + |
6 |
|
|
|
11 |
n.c. |
|
|
|
|
|
|
|
IN2 – |
7 |
|
|
|
10 |
GND2 |
|
|
|
|
|
|
|
n.c. |
8 |
|
|
|
9 |
OUT2 + |
|
|
|
|
|
|
|
|
|
|
MCD381 |
|
|
|
Fig.2 Pin configuration.
July 1994 |
4 |
Loading...