PHILIPS TDA7056B

INTEGRATED CIRCUITS
DATA SHEET
TDA7056B
5 W mono BTL audio amplifier with
DC volume control
Product specification
Supersedes data of 1996 May 28
File under Integrated Circuits, IC01
1997 Aug 15
Philips Semiconductors
Product specification
5 W mono BTL audio amplifier with DC
volume control
TDA7056B
FEATURES
GENERAL DESCRIPTION
• DC volume control
The TDA7056B is a mono Bridge-Tied Load (BTL) output
amplifier with DC volume control.
It is designed for use in TV and monitors, but is also
suitable for battery-fed portable recorders and radios.
The device is contained in a 9-pin medium power
package.
• Few external components
• Mute mode
• Thermal protection
• Short-circuit proof
• No switch-on and switch-off clicks
A Missing Current Limiter (MCL) is built in. The MCL circuit
is activated when the difference in current between the
output terminal of each amplifier exceeds 100 mA
(300 mA typ.). This level of 100 mA allows for headphone
applications (single-ended).
• Good overall stability
• Low power consumption
• Low HF radiation
• ESD protected on all pins.
QUICK REFERENCE DATA
SYMBOL
PARAMETER
VP
supply voltage
PO
output power
CONDITIONS
MIN.
TYP.
MAX.
UNIT
4.5
−
18
V
RL = 16 Ω
3
3.5
−
W
RL = 8 Ω
5
5.5
−
W
VP = 12 V
Gv(max)
maximum total voltage gain
39.5
40.5
41.5
dB
φ
gain control
68
73.5
−
dB
Iq(tot)
total quiescent current
VP = 12 V; RL = ∞
−
9.2
13
mA
THD
total harmonic distortion
PO = 0.5 W
−
0.3
1
%
ORDERING INFORMATION
TYPE
NUMBER
TDA7056B
1997 Aug 15
PACKAGE
NAME
SIL9MPF
DESCRIPTION
plastic single in-line medium power package with fin; 9 leads
2
VERSION
SOT110-1
Philips Semiconductors
Product specification
5 W mono BTL audio amplifier with DC
volume control
TDA7056B
BLOCK DIAGRAM
VP
handbook, full pagewidth
2
n.c.
n.c.
input
DC volume control
1
TDA7056B
9
I + i
6
I – i
8
positive output
3
5
STABILIZER
Vref
negative output
TEMPERATURE
PROTECTION
4
7
signal
ground
MSA708 - 1
power
ground
Fig.1 Block diagram.
PINNING
SYMBOL
PIN
DESCRIPTION
handbook, halfpage
n.c.
1
not connected
VP
2
positive supply voltage
VI
3
voltage input
GND1
4
signal ground
VC
5
DC volume control
OUT+
6
positive output
GND2
7
power ground
OUT
6
OUT−
8
negative output
GND2
7
n.c.
9
not connected
OUT
8
n.c.
1
VP
2
VI
3
GND1
4
VC
5
n.c.
TDA7056B
9
MSA707
Fig.2 Pin configuration.
1997 Aug 15
3
Philips Semiconductors
Product specification
5 W mono BTL audio amplifier with DC
volume control
TDA7056B
The maximum gain of the amplifier is fixed at 40.5 dB.
The DC volume control stage has a logarithmic control
characteristic. Therefore, the total gain can be controlled
from 40.5 dB to −33 dB. If the DC volume control voltage
falls below 0.4 V, the device will switch to the mute mode.
FUNCTIONAL DESCRIPTION
The TDA7056B is a mono BTL output amplifier with DC
volume control, designed for use in TV and monitor but is
also suitable for battery-fed portable recorders and radios.
In conventional DC volume circuits the control or input
stage is AC coupled to the output stage via external
capacitors to keep the offset voltage low. In the TDA7056B
the DC volume control stage is integrated into the input
stage so that no coupling capacitors are required. With this
configuration, a low offset voltage is still maintained and
the minimum supply voltage remains low.
The amplifier is short-circuit proof to ground, VP and
across the load. Also a thermal protection circuit is
implemented. If the crystal temperature rises above
+150 °C the gain will be reduced, thereby reducing the
output power. Special attention is given to switch-on and
switch-off clicks, low HF radiation and a good overall
stability.
The BTL principle offers the following advantages:
• Lower peak value of the supply current
Power dissipation
• The frequency of the ripple on the supply voltage is twice
the signal frequency.
Assume VP = 12 V; RL = 16 Ω.
The maximum sine wave dissipation is = 1.8 W.
Consequently, a reduced power supply with smaller
capacitors can be used which results in cost reductions.
For portable applications there is a trend to decrease the
supply voltage, resulting in a reduction of output power at
conventional output stages. Using the BTL principle
increases the output power.
The Rth vj-a of the package is 55 K/W.
Therefore Tamb (max) = 150 − 55 × 1.8 = 51 °C.
LIMITING VALUES
In accordance with the Absolute Maximum Rating System (IEC 134).
SYMBOL
PARAMETER
CONDITIONS
MIN.
MAX.
UNIT
VP
supply voltage
−
18
V
V3, 5
input voltage pins 3 and 5
−
5
V
IORM
repetitive peak output current
−
1.25
A
IOSM
non-repetitive peak output current
−
1.5
A
Ptot
total power dissipation
−
9
W
Tamb
operating ambient temperature
−40
+85
°C
Tstg
storage temperature
−55
+150
°C
Tvj
virtual junction temperature
−
+150
°C
Tsc
short-circuit time
−
1
h
Tcase < 60 °C
THERMAL CHARACTERISTICS
SYMBOL
PARAMETER
VALUE
UNIT
Rth j-a
thermal resistance from junction to ambient in free air
55
K/W
Rth j-c
thermal resistance from junction to case
10
K/W
1997 Aug 15
4
Philips Semiconductors
Product specification
5 W mono BTL audio amplifier with DC
volume control
TDA7056B
CHARACTERISTICS
VP = 12 V; VDC = 1.4 V; f = 1 kHz; RL = 16 Ω; Tamb = 25 °C; unless otherwise specified (see Fig.13).
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
Supply
VP
positive supply voltage
Iq(tot)
total quiescent current
4.5
−
18
V
note 1; RL = ∞
−
9.2
13
mA
Maximum gain (V5 = 1.4 V)
PO
output power
THD = 10%; RL = 16 Ω
3
3.5
−
W
THD = 10%; RL = 8 Ω
5
5.5
−
W
PO = 0.5 W
−
0.3
1
%
39.5
40.5
41.5
dB
THD
total harmonic distortion
Gv(max)
maximum total voltage gain
VI
input signal handling (RMS value)
Gv(max) = 0 dB; THD < 1%
1.0
−
−
V
Vno
noise output voltage (RMS value)
note 2; f = 500 kHz
−
210
−
µV
B
bandwidth
at −1 dB
−
0.02 to 300 −
SVRR
supply voltage ripple rejection
note 3
34
38
−
dB
∆VO
DC output offset voltage
V8 − v6
−
0
200
mV
ZI
input impedance (pin 3)
15
20
25
kΩ
−
35
45
µV
68
73.5
−
dB
−20
−25
−30
µA
kHz
Mute position
VO
output voltage in mute position
note 4; V5 ≤ 0.4 V;
VI = 1.0 V
DC volume control; note 5
φ
gain control
I5
control current
V5 = 0 V
Notes
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 RL.
2. The noise output voltage (RMS value) at f = 500 kHz is measured with RS = 0 Ω and B = 5 kHz.
3. The ripple rejection is measured with RS = 0 Ω and f = 100 Hz to 10 kHz. The ripple voltage VR of 200 mV
(RMS value) is applied to the positive supply rail.
4. The noise output voltage (RMS value) is measured with RS = 5 kΩ unweighted.
5. The DC volume control can be configured in several ways. Two possible circuits are shown in Figs 14 and 15.
The circuits at the volume control pin will influence the switch-on and switch-off behaviour and the maximum voltage
gain.
1997 Aug 15
5
Philips Semiconductors
Product specification
5 W mono BTL audio amplifier with DC
volume control
TDA7056B
MBH372
40
MBH365
1
handbook, halfpage
handbook, halfpage
Gv
(dB)
Vno
(mV)
0
10−1
−40
−80
−120
0
0.4
0.8
1.2
10−2
1.6
2.0
VDC (V)
0
0.4
0.8
1.2
1.6
2
VDC (V)
Measured with RS = 5 kΩ unweighted.
Frequency range is 22 Hz to 22 kHz.
Fig.3
Gain control as a function of DC volume
control.
Fig.4
MBH376
25
Noise output voltage as a function of DC
volume control.
MBH367
20
handbook, halfpage
handbook, halfpage
IDC
(µA)
IP
(mA)
15
15
5
−5
10
−15
−25
5
0
Fig.5
0.4
0.8
1.2
0
1.6
2.0
VDC (V)
8
12
16
VP (V)
20
Measured with RL = ∞.
Control current as a function of DC volume
control.
1997 Aug 15
4
Fig.6 Quiescent current versus supply voltage.
6
Philips Semiconductors
Product specification
5 W mono BTL audio amplifier with DC
volume control
TDA7056B
MBH361
10
MBH362
10
handbook, halfpage
handbook, halfpage
THD
(%)
8
THD
(%)
8
(1)
(2)
6
6
4
4
2
2
(1)
(2)
0
10-1
1
0
10−2
10
PO (W)
(1) RL 16 Ω.
(2) RL = 8 Ω.
Fig.7
10−1
1
10
f (kHz)
102
PO = 0.1 W.
(1) Gv(max) = 40 dB.
(2) Gv(max) = 30 dB.
Total harmonic distortion versus output
power.
Fig.8 Total harmonic distortion versus frequency.
MBH363
10
MBH364
6
handbook, halfpage
handbook, halfpage
Pd
(W)
5
PO
(W)
8
4
6
3
(2)
(1)
(1)
4
(2)
2
2
1
0
0
0
4
8
12
16
VP (V)
20
0
Measured at a THD of 10%. The maximum output power is limited by
the maximum power dissipation and the maximum available output
current.
(1) RL = 8 Ω.
(2) RL = 16 Ω.
8
12
16
VP (V)
20
(1) RL = 8 Ω.
(2) RL = 16 Ω.
Fig.10 Total worst case power dissipation versus
supply voltage.
Fig.9 Output power versus supply voltage.
1997 Aug 15
4
7
Philips Semiconductors
Product specification
5 W mono BTL audio amplifier with DC
volume control
TDA7056B
MBH374
−20
MBH375
2.0
VI
(V)
handbook, halfpage
handbook, halfpage
SVRR
(dB)
−30
1.6
(1)
−40
1.2
−50
0.8
(2)
−60
−70
10−2
0.4
10−1
1
10
f (kHz)
0
102
0
Measured with VR = 0.2 V.
(1) VDC = 1.4 V.
(2) VDC = 0.4 V.
8
12
16
VP (V)
Measured at a THD of 1% and a voltage gain of 0 dB.
Fig.11 Supply voltage ripple rejection versus
frequency.
1997 Aug 15
4
Fig.12 Input signal handling.
8
20
Philips Semiconductors
Product specification
5 W mono BTL audio amplifier with DC
volume control
TDA7056B
TEST AND APPLICATION INFORMATION
(1)
VP = 12 V
handbook, full pagewidth
220 µF
100 nF
2
n.c.
n.c.
input
0.47 µF
1
9
TDA7056B
I+i
6
+
3
5
RL = 8 Ω
I−i
8
−
RS
5 kΩ
DC
volume
control
STABILIZER
TEMPERATURE
PROTECTION
4
7
MSA709 - 2
ground
To avoid instabilities and too high distortion, the input- and power ground must be separated as long as possible and connected together as close as
possible to the IC.
(1) This capacitor can be omitted if the 220 µF electrolytic capacitor is connected close to pin 2.
Fig.13 Test and application diagram.
For single-end application the output peak current may not exceed 100 mA; at higher output currents the short circuit
protection (MLC) will be activated.
1997 Aug 15
9
Philips Semiconductors
Product specification
5 W mono BTL audio amplifier with DC
volume control
handbook, halfpage
TDA7056B
VP = 12 V
handbook, halfpage
volume
control
volume
control
5
100 kΩ
5
1 µF
1 MΩ
1 µF
22 kΩ
MSA710
MBH366
Fig.14 Application with potentiometer as volume
control; maximum gain = 34 dB.
1997 Aug 15
Fig.15 Application with potentiometer as volume
control; maximum gain = 40 dB.
10
Philips Semiconductors
Product specification
5 W mono BTL audio amplifier with DC
volume control
TDA7056B
PACKAGE OUTLINE
SIL9MPF: plastic single in-line medium power package with fin; 9 leads
SOT110-1
D
D1
q
P
A2
P1
A3
q1
q2
A
A4
seating plane
E
pin 1 index
c
L
1
9
b
e
Z
Q
b2
w M
b1
0
5
10 mm
scale
DIMENSIONS (mm are the original dimensions)
UNIT
A
A2
max.
A3
A4
b
b1
b2
c
D (1)
D1
E (1)
e
L
P
P1
Q
q
q1
q2
w
Z (1)
max.
mm
18.5
17.8
3.7
8.7
8.0
15.8
15.4
1.40
1.14
0.67
0.50
1.40
1.14
0.48
0.38
21.8
21.4
21.4
20.7
6.48
6.20
2.54
3.9
3.4
2.75
2.50
3.4
3.2
1.75
1.55
15.1
14.9
4.4
4.2
5.9
5.7
0.25
1.0
Note
1. Plastic or metal protrusions of 0.25 mm maximum per side are not included.
OUTLINE
VERSION
REFERENCES
IEC
JEDEC
EIAJ
ISSUE DATE
92-11-17
95-02-25
SOT110-1
1997 Aug 15
EUROPEAN
PROJECTION
11
Philips Semiconductors
Product specification
5 W mono BTL audio amplifier with DC
volume control
TDA7056B
The device may be mounted up to the seating plane, but
the temperature of the plastic body must not exceed the
specified maximum storage temperature (Tstg max). If the
printed-circuit board has been pre-heated, forced cooling
may be necessary immediately after soldering to keep the
temperature within the permissible limit.
SOLDERING
Introduction
There is no soldering method that is ideal for all IC
packages. Wave soldering is often preferred when
through-hole and surface mounted components are mixed
on one printed-circuit board. However, wave soldering is
not always suitable for surface mounted ICs, or for
printed-circuits with high population densities. In these
situations reflow soldering is often used.
Repairing soldered joints
Apply a low voltage soldering iron (less than 24 V) to the
lead(s) of the package, below the seating plane or not
more than 2 mm above it. If the temperature of the
soldering iron bit is less than 300 °C it may remain in
contact for up to 10 seconds. If the bit temperature is
between 300 and 400 °C, contact may be up to 5 seconds.
This text gives a very brief insight to a complex technology.
A more in-depth account of soldering ICs can be found in
our “IC Package Databook” (order code 9398 652 90011).
Soldering by dipping or by wave
The maximum permissible temperature of the solder is
260 °C; solder at this temperature must not be in contact
with the joint for more than 5 seconds. The total contact
time of successive solder waves must not exceed
5 seconds.
DEFINITIONS
Data sheet status
Objective specification
This data sheet contains target or goal specifications for product development.
Preliminary specification
This data sheet contains preliminary data; supplementary data may be published later.
Product specification
This data sheet contains final product specifications.
Limiting values
Limiting values given are in accordance with the Absolute Maximum Rating System (IEC 134). Stress above one or
more of the limiting values may cause permanent damage to the device. These are stress ratings only and operation
of the device at these or at any other conditions above those given in the Characteristics sections of the specification
is not implied. Exposure to limiting values for extended periods may affect device reliability.
Application information
Where application information is given, it is advisory and does not form part of the specification.
LIFE SUPPORT APPLICATIONS
These products are not designed for use in life support appliances, devices, or systems where malfunction of these
products can reasonably be expected to result in personal injury. Philips customers using or selling these products for
use in such applications do so at their own risk and agree to fully indemnify Philips for any damages resulting from such
improper use or sale.
1997 Aug 15
12
Philips Semiconductors
Product specification
5 W mono BTL audio amplifier with DC
volume control
NOTES
1997 Aug 15
13
TDA7056B
Philips Semiconductors
Product specification
5 W mono BTL audio amplifier with DC
volume control
NOTES
1997 Aug 15
14
TDA7056B
Philips Semiconductors
Product specification
5 W mono BTL audio amplifier with DC
volume control
NOTES
1997 Aug 15
15
TDA7056B
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© Philips Electronics N.V. 1997
SCA55
All rights are reserved. Reproduction in whole or in part is prohibited without the prior written consent of the copyright owner.
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Printed in The Netherlands
547027/1200/03/pp16
Date of release: 1997 Aug 15
Document order number:
9397 750 02728