tda7056.pdf

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INTEGRATED CIRCUITS
DATA SHEET
TDA7056
3 W mono BTL audio output
amplifier
Product specification
File under Integrated Circuits, IC01
May 1992
11041417.004.png
Philips Semiconductors
Product specification
3 W mono BTL audio output amplifier
TDA7056
FEATURES
·
GENERAL DESCRIPTION
No external components
The TDA7056 is a mono output amplifier contained in a
9 pin medium power package.
The device is designed for battery-fed portable mono
recorders, radios and television.
·
No switch-on/off clicks
·
Good overall stability
·
Low power consumption
·
Short circuit proof
·
ESD protected on all pins.
QUICK REFERENCE DATA
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
V P
supply voltage
3
11
18
V
P O
output power in 16
W
V P = 11 V
2.5
3
-
W
G V
internal voltage gain
39
40.5
42
dB
I P
total quiescent current
V P = 11 V;
-
5
7
mA
R L = ¥
THD
total harmonic distortion
P O = 0.5 W
-
0.25
1
%
ORDERING INFORMATION
EXTENDED
TYPE NUMBER
PACKAGE
PINS
PIN POSITION
MATERIAL
CODE
TDA7056
9
SIL
plastic
SOT110 (1)
Note
1. SOT110-1; 1996 August 21.
May 1992
2
11041417.005.png 11041417.006.png
Philips Semiconductors
Product specification
3 W mono BTL audio output amplifier
TDA7056
Fig.1 Block diagram.
PINNING
FUNCTIONAL DESCRIPTION
PIN
DESCRIPTION
The TDA7056 is a mono output amplifier, designed for
battery-fed portable radios and mains-fed equipment such
as television. For space reasons there is a trend to
decrease the number of external components. For
portable applications there is also a trend to decrease the
number of battery cells, but still a reasonable output power
is required.
The TDA7056 fulfills both of these requirements. It needs
no peripheral components, because it makes use of the
Bridge-Tied-Load (BTL) principle. Consequently it has, at
the same supply voltage, a higher output power compared
to a conventional Single Ended output stage. It delivers an
output power of 1 W into a loudspeaker load of 8
1
n.c.
2
V P
3
input (
+
)
4
signal ground
5
n.c.
6
output (
+
)
7
power ground
8
output ( - )
9
n.c.
W
with 6
loudspeaker at 11 V without
need of an external heatsink. The gain is internally fixed at
40 dB. Special attention is given to switch-on/off click
suppression, and it has a good overall stability. The load
can be short circuited at all input conditions.
W
May 1992
3
V supply or 3 W into 16
11041417.007.png
Philips Semiconductors
Product specification
3 W mono BTL audio output amplifier
TDA7056
LIMITING VALUES
In accordance with the Absolute Maximum System (IEC 134).
SYMBOL
PARAMETER
CONDITIONS
MIN.
MAX.
UNIT
V P
supply voltage
-
18
V
I ORM
Peak output current repetitive
-
1
A
I OSM
Peak output current non-repetitive
-
1.5
A
T stg
storage temperature range
-
55
150
°
C
T j
junction temperature
-
150
°
C
P tot
total power dissipation
T case < 60
°
C
-
9
W
T sc
short circuiting time
see note 1
-
1
hr
Note
1. The load can be short-circuited at all input conditions.
THERMAL RESISTANCE
SYMBOL
PARAMETER
NOM.
UNIT
R th j-c
from junction to case
10
K/W
R th j-a
from junction to ambient in free air
55
K/W
POWER DISSIPATION
Assume: V P = 11 V; R L = 16
.
The maximum sine-wave dissipation is 1.52 W.
The R th j-a of the package is 55 K/W.
T amb max = 150 - 55 ´ 1.52 = 66.4 ° C.
W
May 1992
4
11041417.001.png 11041417.002.png
Philips Semiconductors
Product specification
3 W mono BTL audio output amplifier
TDA7056
CHARACTERISTICS
At T amb = 25 ° C; f = 1 kHz; V P = 11 V; R L = 16 W (see Fig.2).
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
V P
operating supply voltage
3
11
18
V
I ORM
repetitive peak output current
-
-
0.6
A
I P
total quiescent current
note 1
-
5
7
mA
R L =
¥
P O
output power
THD = 10%
2.5
3
-
W
THD
total harmonic distortion
P O = 0.5 W
-
0.25
1
%
G v
voltage gain
39
40.5
42
dB
V no
noise output voltage
note 2
-
180
300
m
V
V no
noise output voltage
note 3
-
60
-
m
V
frequency response
-
20 to 20.000
-
Hz
RR
ripple rejection
note 4
36
50
-
dB
D
V
DC-output offset voltage
note 5
-
-
200
mV
|Z i |
input impedance
-
100
-
k
W
I i
input bias current
-
100
300
nA
Notes to the characteristics
1. With a load connected to the outputs the quiescent current will increase, the maximum value of this increase being
equal to the DC output offset voltage divided by R L .
2. The noise output voltage (RMS value) is measured with R S = 5 k
W
H) the noise output current is only 50 nA.
4. The ripple rejection is measured with R S = 0
W
, L L = 200
m
and f = 100 Hz to 10 kHz.
The ripple voltage (200 mV) is applied to the positive supply rail.
5. R S = 5 k
W
W
.
May 1992
5
unweighted (20 Hz to 20 kHz).
3. The noise output voltage (RMS value) at f = 500 kHz is measured with R S = 0 W and bandwidth = 5 kHz.
With a practical load (R L = 16
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