INTEGRATED CIRCUITS

DATA SHEET

TDA7053A
Stereo BTL audio output amplifier
with DC volume control
Objective specification 1995 Nov 09
Supersedes data of May 1995
File under Integrated Circuits, IC01
Philips Semiconductors Objective specification

Stereo BTL audio output amplifier with

TDA7053A
DC volume control

FEATURES GENERAL DESCRIPTION

• DC volume control The TDA7053A (2 × 1 W) and TDA7053AT (2 × 0.5 W) are
• Few external components stereo BTL output amplifiers with DC volume control.
The devices are designed for use in TV and monitors, but
• Mute mode
are also suitable for battery-fed portable recorders and
• Thermal protection radios.
• Short-circuit proof
Missing Current Limiter (MCL)
• No switch-on and switch-off clicks
• Good overall stability A MCL protection circuit is built-in. The MCL circuit is
activated when the difference in current between the
• Low power consumption
output terminal of each amplifier exceeds 100 mA
• Low HF radiation (typical 300 mA). This level of 100 mA allows for
• ESD protected on all pins. headphone applications (single-ended).

QUICK REFERENCE DATA

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

VP supply voltage 4.5 − 18 V
Pout output power VP = 6 V
TDA7053A RL = 8 Ω 0.85 1.0 − W
TDA7053AT RL = 16 Ω 0.5 0.6 − W
Gv voltage gain 39.5 40.5 41.5 dB
GC gain control 68.0 73.5 − dB
Iq(tot) total quiescent current VP = 6 V; RL = ∞ − 22 25 mA
THD total harmonic distortion
TDA7053A Pout = 0.5 W − 0.3 1 %
TDA7053AT Pout = 0.25 W − 0.3 1 %

ORDERING INFORMATION

TYPE PACKAGE
NUMBER NAME DESCRIPTION VERSION
TDA7053A DIP16 plastic dual in-line package; 16 leads (300 mil); long body SOT38-1
TDA7053AT SO16 plastic small outline package; 16 leads; body width 7.5 mm SOT162-1

1995 Nov 09 2
Philips Semiconductors Objective specification

Stereo BTL audio output amplifier with DC

TDA7053A
volume control

BLOCK DIAGRAM

VP

5
TDA7053A
TDA7053AT
4 I i 16 positive
input 1 output 1

DC volume 2
control 1 Ι
I i 13 negative
output 1

TEMPERATURE
STABILIZER PROTECTION
Vref

6 I i 12 negative
input 2
output 2

DC volume 8
control 2 ΙΙ
I i 9 positive
output 2

1,3,11,15 7 14 10 MSA717 - 2

not
signal power power
connected ground ground 1 ground 2

Fig.1 Block diagram.

1995 Nov 09 3
Philips Semiconductors Objective specification

Stereo BTL audio output amplifier with DC

TDA7053A
volume control

PINNING

SYMBOL PIN DESCRIPTION

n.c. 1 not connected
VC1 2 DC volume control 1
n.c. 3 not connected n.c. 1 16 OUT1
VI (1) 4 voltage input 1
VC1 2 15 n.c.
VP 5 positive supply voltage
n.c. 3 14 PGND1
VI (2) 6 voltage input 2
V I (1) 4 13 OUT1
SGND 7 signal ground TDA7053A
TDA7053AT
VP 5 12 OUT2
VC2 8 DC volume control 2
OUT2+ 9 positive output 2 V I (2) 6 11 n.c.

PGND2 10 power ground 2 SGND 7 10 PGND2

n.c. 11 not connected VC2 8 9 OUT2
OUT2− 12 negative output 2
MSA719 - 2
OUT1− 13 negative output 1
PGND1 14 power ground 1
n.c. 15 not connected
Fig.2 Pin configuration.
OUT1+ 16 positive output 1

FUNCTIONAL DESCRIPTION For portable applications there is a trend to decrease the

supply voltage, resulting in a reduction of output power at
The TDA7053A and TDA7053AT are stereo output
conventional output stages. Using the BTL principle
amplifiers with two DC volume control stages, designed for
increases the output power.
TV and monitors, but also suitable for battery-fed portable
recorders and radios. The maximum gain of the amplifier is fixed at 40.5 dB.
The DC volume control stages have a logarithmic control
In conventional DC volume control circuits the control or
characteristic. Therefore, the total gain can be controlled
input stage is AC coupled to the output stage via external
from +40.5 to −33 dB.
capacitors to keep the offset voltage low.
If the DC volume control voltage falls below 0.4 V, the
The two DC volume control stages are integrated into the
device will switch to the mute mode.
input stages so that no coupling capacitors are required
and a low offset voltage is still maintained. The minimum The amplifier is short-circuit protected to ground, VP and
supply voltage also remains low. across the load. A thermal protection circuit is also
implemented. If the crystal temperature rises above
The BTL principle offers the following advantages:
150 °C the gain will be reduced, thereby reducing the
• Lower peak value of the supply current output power.
• The frequency of the ripple on the supply voltage is twice Special attention is given to switch-on and switch-off
the signal frequency. clicks, low HF radiation and a good overall stability.
Consequently, a reduced power supply with smaller
capacitors can be used which results in cost reductions.

1995 Nov 09 4
Philips Semiconductors Objective specification

Stereo BTL audio output amplifier with DC

TDA7053A
volume control

LIMITING VALUES
In accordance with the Absolute Maximum Rating System (IEC 134).
SYMBOL PARAMETER CONDITIONS MIN. MAX. UNIT
VP supply voltage − 18 V
IORM repetitive peak output current − 1.25 A
IOSM non-repetitive peak output current − 1.5 A
Ptot total power dissipation Tamb ≤ 25 °C
TDA7053A − 2.5 W
TDA7053AT − 1.32 W
tsc short-circuit time − 1 hr
Vn input voltage pins 2, 4, 6 and 8 − 5 V
Tamb operating ambient temperature −40 +85 °C
Tstg storage temperature −55 +150 °C
Tvj virtual junction temperature − +150 °C

THERMAL CHARACTERISTICS

SYMBOL PARAMETER VALUE UNIT

Rth j-a thermal resistance from junction to ambient in free air
TDA7053A 50 K/W
TDA7053AT 95 K/W

Power dissipation
TDA7053A:
Assume VP = 6 V and RL = 8 Ω.
The maximum sine wave dissipation is 2 × 0.9 W = 1.8 W.
The Rth j-a of the package is 50 K/W therefore Tamb(max) = 150 − (50 × 1.8) = 60 °C.

TDA7053AT:
Assume VP = 6 V and RL = 16 Ω.
The maximum sine wave dissipation is 2 × 0.46 W = 0.92 W.
The Rth j-a of the package is 95 K/W therefore Tamb(max) = 150 − (95 × 0.92) = 62.6 °C.

1995 Nov 09 5
Philips Semiconductors Objective specification

Stereo BTL audio output amplifier with DC

TDA7053A
volume control

CHARACTERISTICS
VP = 6 V; Tamb = 25 °C; fi = 1 kHz; TDA7053A: RL = 8 Ω; TDA7053AT: RL = 16 Ω; unless otherwise specified
(see Fig.13).
SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT
VP supply voltage 4.5 − 18 V
Iq(tot) total quiescent current VP = 6 V; RL = ∞; note 1 − 22 25 mA
Maximum gain; V2,8 ≥ 1.4 V
Pout output power THD = 10%
TDA7053A 1.0 1.1 − W
TDA7053AT 0.5 0.6 − W
THD total harmonic distortion
TDA7053A Pout = 0.5 W − 0.3 1 %
TDA7053AT Pout = 0.25 W − 0.3 1 %
Gv voltage gain 39.5 40.5 41.5 dB
VI(rms) input signal handling (RMS value) Gv = 0 dB; THD < 1% 1 − − V
Vno noise output voltage fi = 500 kHz; note 2 − 210 − µV
B bandwidth at −1 dB − note 3 − Hz
SVRR supply voltage ripple rejection note 4 34 38 − dB
VO(os) DC output offset voltage V16 − V13 and V12 − V9 − 0 200 mV
Zi input impedance (pins 4 and 6) 15 20 25 kΩ
αcs channel separation RS = 5 kΩ 40 − − dB
Gv channel unbalance note 5 − − 1 dB
G1 = 0 dB; note 6 − − 1 dB
Mute position; V2,8 = 0.4 V ±30 mV
VO output voltage in mute position Vi = 1.0 V; note 7 − − 30 µV
DC volume control
GC gain control 68.5 73.5 − dB
IDC volume control current V2 = V8 = 0 V −20 −25 −30 µA

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 fi = 500 kHz is measured with RS = 0 Ω and bandwidth = 5 kHz.
3. 20 Hz to 300 kHz (typical).
4. The ripple rejection is measured with RS = 0 Ω and fi = 100 Hz to 10 kHz. The ripple voltage of 200 mV (RMS value)
is applied to the positive supply rail.
5. The channel unbalance is measured with VDC1 = VDC2.
6. The channel unbalance at G1 = 0 dB is measured with VDC1 = VDC2.
7. The noise output voltage (RMS value) is measured with RS = 5 kΩ unweighted.

1995 Nov 09 6
Philips Semiconductors Objective specification

Stereo BTL audio output amplifier with DC

TDA7053A
volume control

MBG672 MBG671
40 12
handbook, halfpage handbook, halfpage
Iq
THD
(mA)
(%)
30
8

(1) (2) (3)

20

10

0 0
0 4 8 12 16 20 10−2 10−1 1 Pout (W) 10
VP (V)

(1) VP = 4.5 V.
(2) VP = 6 V; RL = 8 Ω.
(3) VP = 12 V; RL = 25 Ω.
Fig.3 Quiescent current as a function of supply
voltage. Fig.4 THD as a function of output power.

MBG669 MBG670
10 2.5
handbook, halfpage handbook, halfpage
THD Pout
(%) (W)
8 2.0

(1) (2) (3)

6 1.5

4 1.0

(2)
2 (1) 0.5

0 0
10−2 10−1 1 10 102 0 4 8 12
VP (V)
16
f (kHz)

(1) RL = 8 Ω.
(2) RL = 16 Ω.
(1) Gv = 30 dB; Po = 0.1 W. (3) RL = 25 Ω.
(2) Gv = 40 dB; Po = 0.1 W.

Fig.6 Output power as a function of supply

Fig.5 THD as a function of frequency. voltage.

1995 Nov 09 7
Philips Semiconductors Objective specification

Stereo BTL audio output amplifier with DC

TDA7053A
volume control

MBG668 MBG667
4 80
handbook, halfpage handbook, halfpage
Pdiss Gv
(W) (dB)
40
3
(1) (2) (3)

−40

1
−80

0 −120
0 4 8 12 16 0 0.4 0.8 1.2 1.6 2.0
VP (V) VVC (V)

(1) RL = 8 Ω.
(2) RL = 16 Ω.
(3) RL = 25 Ω.

Fig.7 Total worst case power dissipation as a Fig.8 Voltage gain as a function of volume control
function of supply voltage. voltage.

MBG664 MBG663
1 0
handbook, halfpage handbook, halfpage
SVRR
(dB)
Vno
(mV) −20

(1)
10−1 −40

−60
(2)

10−2 −80
0 0.4 0.8 1.2 1.6 2.0 10−2 10−1 1 10 102
VVC (V) f (kHz)

f = 22 Hz to 22 kHz. (1) VDC = 1.4 V;Vripple = 0.2 V.

(2) VDC = 0.4 V; Vripple = 0.2 V.

Fig.9 Noise voltage as a function of volume

control voltage. Fig.10 SVRR as a function of frequency.

1995 Nov 09 8
Philips Semiconductors Objective specification

Stereo BTL audio output amplifier with DC

TDA7053A
volume control

MBG665 MBG666
2.0 30
handbook, halfpage handbook, halfpage
IVC
Vin
(µA)
(V) 20
1.6

10
1.2

0.8
−10

0.4
−20

0 −30
0 4 8 12 16 20 0 0.4 0.8 1.2 1.6 2.0
VP (V) VVC (V)

THD = 1 %.
Fig.12 Volume control current as a function of
Fig.11 Input signal handling. volume control voltage.

APPLICATION INFORMATION The maximum input signal voltage is measured at

THD = 1% at the output with a voltage gain of 0 dB.
The application diagram is illustrated in Fig.13.
To avoid instabilities and too high distortion, the input
Test conditions ground and power ground must be separated as far as
possible and connected as close as possible to the IC.
Tamb = 25 °C unless otherwise specified; VP = 6 V;
VDC = 1.4 V; fi = 1 kHz; RL = 8 Ω. The DC volume control can be applied in several ways.
Two possible circuits are shown below the main
The quiescent current has been measured without load
application diagram. The circuits at the control pin will
impedance.
influence the switch-on and switch-off behaviour and the
The output power as a function of the supply voltage has maximum voltage gain.
been measured at THD = 10%. The maximum output
For single-end applications the output peak current must
power is limited by the maximum power dissipation and the
not exceed 100 mA. At higher output currents the
maximum available output current.
short-circuit protection (MCL) will be active.

1995 Nov 09 9
Philips Semiconductors Objective specification

Stereo BTL audio output amplifier with DC

TDA7053A
volume control

handbook, full pagewidth VP = 6 V

(1)
100 nF 220 µF

5
TDA7053A
16

470 nF I+1
4
input 1
(2)
2
Rs = 5 kΩ I−1
13

TEMPERATURE
STABILIZER MCL
PROTECTION

12

470 nF I−1
6
input 2
8 (2)

I+1
DC- 9
volume
Rs = 5 kΩ

7 10 14

signal power
ground ground

VCC = 6 V

volume volume 56 kΩ
control 2, 8 maximum voltage control 2, 8 maximum voltage
gain 34 dB gain 40 dB

1 µF 1 MΩ 1 µF 22 kΩ

MBG673

(1) This capacitor can be omitted if the 220 µF electrolytic capacitor is connected close to pin 5.
(2) RL = 8 Ω.

Fig.13 Test and application diagram.

1995 Nov 09 10
Philips Semiconductors Objective specification

Stereo BTL audio output amplifier with DC

TDA7053A
volume control

PACKAGE OUTLINES

DIP16: plastic dual in-line package; 16 leads (300 mil); long body SOT38-1

D ME
seating plane

A2 A

A1
L

c
Z e w M
b1
(e 1)
b
16 9 MH

pin 1 index
E

1 8

0 5 10 mm
scale

DIMENSIONS (inch dimensions are derived from the original mm dimensions)

UNIT
A A1 A2
b b1 c D (1) E (1) e e1 L ME MH w Z (1)
max. min. max. max.
1.40 0.53 0.32 21.8 6.48 3.9 8.25 9.5
mm 4.7 0.51 3.7 2.54 7.62 0.254 2.2
1.14 0.38 0.23 21.4 6.20 3.4 7.80 8.3
0.055 0.021 0.013 0.86 0.26 0.15 0.32 0.37
inches 0.19 0.020 0.15 0.10 0.30 0.01 0.087
0.045 0.015 0.009 0.84 0.24 0.13 0.31 0.33

Note
1. Plastic or metal protrusions of 0.25 mm maximum per side are not included.

OUTLINE REFERENCES EUROPEAN

ISSUE DATE
VERSION IEC JEDEC EIAJ PROJECTION

92-10-02
SOT38-1 050G09 MO-001AE
95-01-19

1995 Nov 09 11
Philips Semiconductors Objective specification

Stereo BTL audio output amplifier with DC

TDA7053A
volume control

SO16: plastic small outline package; 16 leads; body width 7.5 mm SOT162-1

D E A
X

y HE v M A

16 9

Q
A2 A
A1 (A 3)

pin 1 index
θ
Lp
L

1 8 detail X
e w M
bp

0 5 10 mm
scale

DIMENSIONS (inch dimensions are derived from the original mm dimensions)

A
UNIT max. A1 A2 A3 bp c D (1) E (1) e HE L Lp Q v w y Z
(1)
θ

0.30 2.45 0.49 0.32 10.5 7.6 10.65 1.1 1.1 0.9
mm 2.65 0.25 1.27 1.4 0.25 0.25 0.1 o
0.10 2.25 0.36 0.23 10.1 7.4 10.00 0.4 1.0 0.4 8
0.012 0.096 0.019 0.013 0.41 0.30 0.42 0.043 0.043 0.035 0o
inches 0.10 0.01 0.050 0.055 0.01 0.01 0.004
0.004 0.089 0.014 0.009 0.40 0.29 0.39 0.016 0.039 0.016

Note
1. Plastic or metal protrusions of 0.15 mm maximum per side are not included.

OUTLINE REFERENCES EUROPEAN

ISSUE DATE
VERSION IEC JEDEC EIAJ PROJECTION

92-11-17
SOT162-1 075E03 MS-013AA
95-01-24

1995 Nov 09 12
Philips Semiconductors Objective specification

Stereo BTL audio output amplifier with DC

TDA7053A
volume control

SOLDERING Several techniques exist for reflowing; for example,

thermal conduction by heated belt. Dwell times vary
Introduction
between 50 and 300 seconds depending on heating
There is no soldering method that is ideal for all IC method. Typical reflow temperatures range from
packages. Wave soldering is often preferred when 215 to 250 °C.
through-hole and surface mounted components are mixed
Preheating is necessary to dry the paste and evaporate
on one printed-circuit board. However, wave soldering is
the binding agent. Preheating duration: 45 minutes at
not always suitable for surface mounted ICs, or for
45 °C.
printed-circuits with high population densities. In these
situations reflow soldering is often used.
WAVE SOLDERING
This text gives a very brief insight to a complex technology.
Wave soldering techniques can be used for all SO
A more in-depth account of soldering ICs can be found in
packages if the following conditions are observed:
our “IC Package Databook” (order code 9398 652 90011).
• A double-wave (a turbulent wave with high upward
DIP pressure followed by a smooth laminar wave) soldering
technique should be used.
SOLDERING BY DIPPING OR BY WAVE
• The longitudinal axis of the package footprint must be
The maximum permissible temperature of the solder is parallel to the solder flow.
260 °C; solder at this temperature must not be in contact • The package footprint must incorporate solder thieves at
with the joint for more than 5 seconds. The total contact the downstream end.
time of successive solder waves must not exceed
5 seconds. During placement and before soldering, the package must
be fixed with a droplet of adhesive. The adhesive can be
The device may be mounted up to the seating plane, but applied by screen printing, pin transfer or syringe
the temperature of the plastic body must not exceed the dispensing. The package can be soldered after the
specified maximum storage temperature (Tstg max). If the adhesive is cured.
printed-circuit board has been pre-heated, forced cooling
may be necessary immediately after soldering to keep the Maximum permissible solder temperature is 260 °C, and
temperature within the permissible limit. maximum duration of package immersion in solder is
10 seconds, if cooled to less than 150 °C within
REPAIRING SOLDERED JOINTS 6 seconds. Typical dwell time is 4 seconds at 250 °C.

Apply a low voltage soldering iron (less than 24 V) to the A mildly-activated flux will eliminate the need for removal
lead(s) of the package, below the seating plane or not of corrosive residues in most applications.
more than 2 mm above it. If the temperature of the
soldering iron bit is less than 300 °C it may remain in REPAIRING SOLDERED JOINTS
contact for up to 10 seconds. If the bit temperature is Fix the component by first soldering two diagonally-
between 300 and 400 °C, contact may be up to 5 seconds. opposite end leads. Use only a low voltage soldering iron
(less than 24 V) applied to the flat part of the lead. Contact
SO time must be limited to 10 seconds at up to 300 °C. When
REFLOW SOLDERING using a dedicated tool, all other leads can be soldered in
one operation within 2 to 5 seconds between
Reflow soldering techniques are suitable for all SO 270 and 320 °C.
packages.
Reflow soldering requires solder paste (a suspension of
fine solder particles, flux and binding agent) to be applied
to the printed-circuit board by screen printing, stencilling or
pressure-syringe dispensing before package placement.

1995 Nov 09 13
Philips Semiconductors Objective specification

Stereo BTL audio output amplifier with DC

TDA7053A
volume control

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.

1995 Nov 09 14
Philips Semiconductors Objective specification

Stereo BTL audio output amplifier with DC

TDA7053A
volume control

NOTES

1995 Nov 09 15
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