tda7073a, Ham- CB Radio, Karty katalogowe
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INTEGRATED CIRCUITS
DATA SHEET
TDA7073A/AT
Dual BTL power driver
Product specication
File under Integrated Circuits, IC01
July 1994
Philips Semiconductors
Product specication
Dual BTL power driver
TDA7073A/AT
FEATURES
Missing Current Limiter (MCL)
·
No external components
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).
·
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
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX. UNIT
V
P
positive supply voltage range
3.0
5.0
18
V
G
v
internal voltage gain
32.5
33.5
34.5
dB
I
P
total quiescent current
V
P
= 5 V; R
L
=
¥
-
8
16
mA
SR
slew rate
-
12
-
V/
m
s
I
O
output current
-
-
0.6
A
I
bias
input bias current
-
100
300
nA
f
co
cut-off frequency
-
3 dB
-
1.5
-
MHz
ORDERING INFORMATION
EXTENDED TYPE
NUMBER
PACKAGE
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
Philips Semiconductors
Product specication
Dual BTL power driver
TDA7073A/AT
V
P
handbook, full pagewidth
5
I + i
16
positive output 1
2
positive input 1
I
1
negative input 1
I – i
13
negative output 1
TDA7073A
TDA7073AT
SHORT - CIRCUIT AND
THERMAL PROTECTION
I – i
12
negative output 2
positive input 2
6
II
7
negative input 2
I + i
9
positive output 2
3, 4, 8, 11, 15
10
14
MCD382 - 1
ground 2
ground 1
n.c.
Fig.1 Block diagram.
July 1994
3
Philips Semiconductors
Product specication
Dual BTL power driver
TDA7073A/AT
PINNING
FUNCTIONAL DESCRIPTION
SYMBOL PIN
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.
IN1
-
1
negative input 1
IN1
+
2
positive input 1
n.c.
3
not connected
n.c.
4
not connected
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
-
V
P
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
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.
OUT2
-
12
negative output 2
OUT1
-
13
negative output 1
GND1
14
ground 1
n.c.
15
not connected
OUT1
+
16
positive output 1
handbook, halfpage
IN1–
1
16
OUT1+
IN1+
2
15
n.c.
n.c.
3
14
GND1
n.c.
4
TDA7073A
TDA7073AT
13
OUT1 –
V
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
Philips Semiconductors
Product specication
Dual BTL power driver
TDA7073A/AT
LIMITING VALUES
In accordance with the Absolute Maximum System (IEC 134).
SYMBOL
PARAMETER
CONDITIONS
MIN.
MAX.
UNIT
V
P
positive supply voltage range
-
18
V
I
ORM
repetitive peak output current
-
1
A
I
OSM
non repetitive peak output current
-
1.5
A
P
tot
total power dissipation
T
amb
<25
°
C
TDA7073A
-
2.5
W
TDA7073AT
-
1.32
W
T
stg
storage temperature range
-
55
+
150
°
C
T
vj
virtual junction temperature
-
+
150
°
C
T
sc
short-circuit time
see note 1
-
1
hr
Note to the limiting values
1. The outputs can be short-circuited over the load, to the supply and to ground at all input conditions.
THERMAL RESISTANCE
SYMBOL
PARAMETER
THERMAL RESISTANCE
R
th j-a
from junction to ambient in free air
TDA7073A; note 1
50 K/W
TDA7073AT; note 2
95 K/W
Notes to the thermal resistance
1. TDA7073A: V
P
= 5 V; R
L
= 8
W
; The typical voltage swing = 5.8 V and V
loss
is 2.1 V therefore I
O
= 0.36 A and
C.
2. TDA7073AT: V
P
= 5 V; R
L
= 16
W
; typical voltage swing = 5.8 V and V
loss
is 2.1 V therefore I
O
= 0.18 A and
P
tot
=2
P
tot
=2
0.76 W = 1.52 W; T
amb (max)
= 150
-
1.52
´
50 = 74
°
0.38 W = 0.76 W; T
amb (max)
= 150
-
0.76
´
95 = 77
°
C.
July 1994
5
´
´
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