Datasheet TDA1521Q, TDA1521 Datasheet (Philips)

Page 1
INTEGRATED CIRCUITS
DATA SH EET
TDA1521 TDA1521Q
2 x 12 W hi-fi audio power amplifier
Product specification File under Integrated Circuits, IC01
July 1994
Page 2
Philips Semiconductors Product specification
2 x 12 W hi-fi audio power amplifier
TDA1521
TDA1521Q

GENERAL DESCRIPTION

The TDA1521/TDA1521Q is a dual hi-fi audio power amplifier encapsulated in a 9-lead plastic power package. The device is especially designed for mains fed applications (e.g. stereo tv sound and stereo radio).

Features

Requires very few external components
Input muted during power-on and off
(no switch-on or switch-off clicks)
Low offset voltage between output and ground
Excellent gain balance between channels
Hi-fi according to IEC 268 and DIN 45500
Short-circuit-proof
Thermally protected

QUICK REFERENCE DATA

Stereo applications

Supply voltage range V Output power at THD = 0,5%,
V
= ± 16 V P
P
Voltage gain G Gain balance between channels G Ripple rejection SVRR typ. 60 dB Channel separation α typ. 70 dB Noise output voltage V
P
O
v
no(rms)
± 7,5 to ± 21,0 V
typ. 12 W typ. 30 dB typ. 0,2 dB
v
typ. 70 µV

PACKAGE OUTLINES

TDA1521: 9 leads in-line; plastic power (SOT131); SOT131-1; 1996 August 20. TDA1521Q: 9 leads SIL-bent-to-DIL; plastic power (SOT157); SOT157-2; 1996 August 20.
Page 3
Philips Semiconductors Product specification
2 x 12 W hi-fi audio power amplifier
TDA1521
TDA1521Q
Fig.1 Block diagram.

PINNING

1 INV1 non-inverting input 1 2 INV1 inverting input 1
3 GND 4 OUT1 output 1
ground (symmetrical)
1
⁄2 VP (asymmetrical)
5 V 6 OUT2 output 2
7+V 8 INV2 inverting input 2 9 INV2 non-inverting input 2
P
P
negative supply (symmetrical) ground (asymmetrical)
positive supply
Page 4
Philips Semiconductors Product specification
2 x 12 W hi-fi audio power amplifier
TDA1521
TDA1521Q

FUNCTIONAL DESCRIPTION

This hi-fi stereo power amplifier is designed for mains fed applications. The circuit is designed for both symmetrical and asymmetrical power supply systems. An output power of 2 × 12 watts (THD = 0,5%) can be delivered into an 8 load with a symmetrical power supply of ± 16 V.
The gain is fixed internally at 30 dB. Internal gain fixing gives low gain spread and very good balance between the amplifiers (0,2 dB).
A special feature of this device is a mute circuit which suppresses unwanted input signals during switching on and off. Referring to Fig.13, the 100 µF capacitor creates a time delay when the voltage at pin 3 is lower than an internally fixed reference voltage. During the delay the amplifiers remain in their DC operating mode but are isolated from the non-inverting inputs on pins 1 and 9.
Two thermal protection circuits are provided, one monitors the average junction temperature and the other the instantaneous temperature of the power transistors. Both protection circuits activate at 150 °C allowing safe operation to a maximum junction temperature of 150°C without added distortion.

RATINGS

Limiting values in accordance with the Absolute Maximum System (IEC 134)
PARAMETER CONDITIONS SYMBOL MIN. MAX. UNIT
Supply voltage pin 7 V
pin 5 V
Non-repetitive peak
output current pins 4 and 6 I Total power dissipation see Fig.2 P Storage temperature range T Junction temperature T Short-circuit time: see note
outputs short-circuited
to ground symmetrical
(full signal drive) power supply t
asymmetrical power supply;
< 32 V
V
P
(unloaded); R
4 t
i
P
OSM
tot stg j
sc
sc
= V
= V
P
7-3
5-3
+21 V
−−21 V
4A
55 +150 °C
150 °C
1 hour
1 hour
Note
For asymmetrical power supplies (at short circuiting of the load) the maximum supply voltage is limited to VP = 28 V. If the total internal resistance of the supply (Ri) > 4, the maximum unloaded supply voltage is increased to 32 V.
Page 5
Philips Semiconductors Product specification
2 x 12 W hi-fi audio power amplifier
TDA1521
TDA1521Q
Fig.2 Power derating curve.

THERMAL RESISTANCE

From junction to case R

HEATSINK DESIGN EXAMPLE

With derating of 2,5 K/W, the value of heatsink thermal resistance is calculated as follows: given RL = 8 and VP = ±16 V, the measured maximum dissipation is 14,6 W; then, for a maximum ambient temperature
of 65 °C, the required thermal resistance of the heatsink is
R
th h a–
Note: The internal metal block (heatsink) has the same potential as pin 5 (V
150 65
---------------------­14 6,
25 33 K W,=,=
th j-c
= 2,5 K/W
).
P
Page 6
Philips Semiconductors Product specification
2 x 12 W hi-fi audio power amplifier
TDA1521
TDA1521Q

CHARACTERISTICS

PARAMETER CONDITIONS SYMBOL MIN. TYP. MAX. UNIT
Supply voltage range
operating mode V input mute mode V
P P
Repetitive peak
output current I
ORM
Operating mode: symmetrical power supply; test circuit as per Fig.12;
= ± 16 V; RL = 8; T
V
P
Total quiescent current without R Output power THD = 0,5% P
= 25 °C; f = 1 kHz
amb
THD = 10% P
L
I
tot
O O
Total harmonic
distortion P
= 6 W THD 0,15 0,2 %
O
Power bandwidth THD = 0,5%
note 1 B 20 to
Voltage gain G Gain balance G
V
V
Noise output voltage
(r.m.s, value); unweighted (20 Hz to 20 kHz) R
Input impedance |Z
= 2 k V
S
no(rms)
14 20 26 k
i
Ripple rejection note 2 SVRR 40 60 dB Channel separation RS= 0 Ωα 46 70 dB Input bias current I
ib
DC output offset with respect
voltage to ground V
OFF
Input mute mode: symmetrical power supply; test circuit as per Fig.12;
VP= ± 4V; RL= 8 ; T Total quiescent current without R Output voltage V
= 25 °C; f = 1 kHz
amb
L
= 600 mV V
i
I
tot
out
Noise output voltage
(r.m.s. value);
unweighted (20 Hz to 20 kHz) R
= 2 k V
S
no(rms)
Ripple rejection note 2 SVRR 35 55 dB DC output offset with respect
voltage to ground V
OFF
± 7,5 ± 16,0 ± 21,0 V ± 2,0 −±5,8 V
2,2 −−A
18 40 70 mA 10 12 W 12 15 W
20k Hz
29 30 31 dB
0,2 1,0 dB
70 140 µV
0,3 −µA
30 200 mV
9 3040mA
0,6 1,8 mV
70 140 µV
40 200 mV
Page 7
Philips Semiconductors Product specification
2 x 12 W hi-fi audio power amplifier
TDA1521
TDA1521Q
PARAMETER CONDITIONS SYMBOL MIN. TYP. MAX. UNIT
Operating mode: asymmetrical power supply; test circuit as per Fig.13;
= 24 V; RL= 8 ; T
V
S
Total quiescent current I Output power THD = 0,5% P
Total harmonic
distortion PO= 4 W THD 0,13 0,2 % Power bandwidth THD = 0,5% 40 to
Voltage gain G Gain balance G Noise output voltage
(r.m.s. value);
unweighted (20 Hz to 20 kHz) R Input impedance Z Ripple rejection SVRR 35 44 dB Channel separation R
Notes
1. Power bandwidth at Po max 3 dB.
2. Ripple rejection at RS = 0 , f = 100 Hz to 20 kHz; ripple voltage = 200 mV (r.m.s. value) applied to positive or negative supply rail.
= 25 °C; f = 1 kHz
amb
18 40 70 mA 56W 6,5 8 W
THD = 10% P
tot
o o
note 1 B 20k Hz
V
V
= 2 k V
S
= 0 Ωα −45 dB
S
no(rms)
14 20 26 k
i
29 30 31 dB
0,2 1 dB
70 140 µV
Page 8
Philips Semiconductors Product specification
2 x 12 W hi-fi audio power amplifier
TDA1521
TDA1521Q
APPLICATION INFORMATION Input mute circuit
The input mute circuit operates only during switching on and off of the supply voltage. The circuit compares the 1/2 supply voltage (at pin 3) with an internally fixed reference voltage (V voltage at pin 3 is lower than V at pin 3 is determined by an internal voltage divider and the external 100 µF capacitor.
During switching on, a time delay is created between the reference voltage and the voltage at pin 3, during which the input terminal is disconnected, (as illustrated in Fig.3).
the non-inverting inputs (pins 1 and 9) are disconnected from the amplifier. The voltage
ref
), derived directly from the supply voltage. When the
ref
Fig.3 Input mute circuit; time delay.
Page 9
Philips Semiconductors Product specification
2 x 12 W hi-fi audio power amplifier
TDA1521
TDA1521Q
Fig.4 Output power as a function of supply
voltage; symmetrical supply; RL = 8; f = 1 kHz.
Fig.5 Distortion as a function of frequency;
symmetrical supply; VP = ± 16 V; RL = 8 ; Po = 6 W.
Fig.6 Supply voltage ripple rejection;
symmetrical supply; VP = ± 16 V; VRR= 200 mV.
Fig.7 Power dissipation as a function of
output power; symmetrical supply; VP = ± 16 V; RL = 8; f = 1 kHz.
Page 10
Philips Semiconductors Product specification
2 x 12 W hi-fi audio power amplifier
TDA1521
TDA1521Q
Fig.8 Output power as a function of
supply voltage; asymmetrical supply; RL = 8; f = 1 kHz.
Fig.9 Distortion as a function of frequency;
asymmetrical supply; VS = 24 V; RL = 8; Po = 4 W.
Fig.10 Supply voltage ripple rejection;
asymmetrical supply; VS = 24 V; VRR = 200 mV.
July 1994 10
Fig.11 Output power as a function of
supply voltage; asymmetrical supply; RL = 4; f = 1 kHz.
Page 11
Philips Semiconductors Product specification
2 x 12 W hi-fi audio power amplifier
TDA1521
TDA1521Q
(1) To be connected as close as possible to the IC
Fig.12 Test and application circuit; symmetrical power supply.
(1) To be connected as close as possible to the IC
Fig.13 Test and application circuit; asymmetrical power supply.
July 1994 11
Page 12
Philips Semiconductors Product specification
2 x 12 W hi-fi audio power amplifier

PACKAGE OUTLINES

SIL9P: plastic single in-line power package; 9 leads
D
d
TDA1521
TDA1521Q

SOT131-2

non-concave
x
E
h
view B: mounting base side
B
j
D
h
A
2
E
seating plane
b
19
Z
DIMENSIONS (mm are the original dimensions)
A
UNIT A
mm
Note
1. Plastic or metal protrusions of 0.25 mm maximum per side are not included.
1
max.
2.0
OUTLINE VERSION
SOT131-2
4.6
4.2
e
b
b
cD
max.
1.1
p2
0.75
0.48
0.60
0.38
IEC JEDEC EIAJ
b
p
(1)
24.0
23.6
REFERENCES
w M
0 5 10 mm
scale
deD
h
20.0
10 2.54
19.6
E
12.2
11.8
A
1
L
c
Q
(1)
E
h
6
3.4
3.1
Lj
Q
17.2
2.1
16.5
1.8
EUROPEAN
PROJECTION
0.25w0.03
ISSUE DATE
92-11-17 95-03-11
(1)
Z
x
2.00
1.45
July 1994 12
Page 13
Philips Semiconductors Product specification
2 x 12 W hi-fi audio power amplifier
DBS9P: plastic DIL-bent-SIL power package; 9 leads (lead length 12 mm)
non-concave
D
d
x
E
h
D
h
view B: mounting base side
A
2
TDA1521
TDA1521Q

SOT157-2

j
19
e
0.75
0.60
1
e
cD
0.48
24.0
0.38
23.6
(1)
deD
20.0
19.6
Z
DIMENSIONS (mm are the original dimensions)
UNIT A A e
17.0
15.5
4.6
4.2
mm
Note
1. Plastic or metal protrusions of 0.25 mm maximum per side are not included.
w M
b
p
E
h
12.2
10 5.08
11.8
0 5 10 mm
scale
(1)
12bp
2.54
e
5.08
B
E
A
L
3
L
E
2
h
6
Q
LL3m
3.4
12.4
3.1
11.0
c
2.4
1.6
e
2
4.3
2.1
1.8
v M
(1)
v
Qj
0.8
0.25w0.03
Z
x
2.00
1.45
m
OUTLINE VERSION
SOT157-2
IEC JEDEC EIAJ
REFERENCES
July 1994 13
EUROPEAN
PROJECTION
ISSUE DATE
92-10-12 95-03-11
Page 14
Philips Semiconductors Product specification
2 x 12 W hi-fi audio power amplifier
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.
This text gives a very brief insight to a complex technology. A more in-depth account of soldering ICs can be found in
“IC Package Databook”
our
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.
(order code 9398 652 90011).
TDA1521
TDA1521Q
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 (T printed-circuit board has been pre-heated, forced cooling may be necessary immediately after soldering to keep the temperature within the permissible limit.
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.
stg max
). If the

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.
July 1994 14
Loading...