tda1020, Ham- CB Radio, Karty katalogowe
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INTEGRATED CIRCUITS
DATA SHEET
TDA1020
12 W car radio power amplifier
Product specification
File under Integrated Circuits, IC01
November 1982
Philips Semiconductors
Product specification
12 W car radio power amplifier
TDA1020
The TDA1020 is a monolithic integrated 12 W audio amplifier in a 9-lead single in-line (SIL) plastic package. The device
is primarily developed as a car radio amplifier. At a supply voltage of V
P
=
14,4 V, an output power of 7 W can be delivered
into a 4
load and 12 W into 2
W
.
To avoid interferences and car ignition signals coming from the supply lines into the IC, frequency limiting is used beyond
the audio spectrum in the preamplifier and the power amplifier.
The maximum supply voltage of 18 V makes the IC also suitable for mains-fed radio receivers, tape recorders or record
players. However, if the supply voltage is increased above 18 V (< 45 V), the device will not be damaged (load dump
protected). Also a short-circuiting of the output to ground (a.c.) will not destroy the device. Thermal protection is built-in.
As a special feature, the circuit has a low stand-by current possibility.
The TDA1020 is pin-to-pin compatible with the TDA1010.
QUICK REFERENCE DATA
Supply voltage range
V
P
6 to 18 V
Repetitive peak output current
I
ORM
<
4 A
Output power at d
tot
= 10% (with bootstrap)
>
10 W
V
P
= 14,4 V; R
L
= 2
W
P
o
typ.
12 W
V
P
= 14,4 V; R
L
= 4
W
P
o
typ.
7 W
V
P
= 14,4 V; R
L
= 8
W
P
o
typ.
3,5 W
Output power at d
tot
= 10% (without bootstrap)
V
P
= 14,4 V; R
L
= 4
W
P
o
>
4,5 W
Input impedance
preamplifier (pin 8)
|Z
i
|
typ.
40 k
W
power amplifier (pin 6)
|Z
i
|
typ.
40 k
W
Total quiescent current at V
P
= 14,4 V
I
tot
typ.
30 mA
Stand-by current
I
sb
<
1 mA
Storage temperature range
T
stg
-
55 to + 150
°
C
Crystal temperature
T
c
max.
150
°
C
PACKAGE OUTLINE
9-lead SIL; plastic (SOT110B); SOT110-1; 1996 July 24.
November 1982
2
Preliminary Specification
W
Philips Semiconductors
Product specification
12 W car radio power amplifier
TDA1020
Fig.1 Internal block diagram; the heavy lines indicate the signal paths.
PINNING
1. Negative supply (substrate)
2. Output power stage
3. Positive supply (V
P
)
4. Bootstrap
5. Ripple rejection filter
6. Input power stage
7. Output preamplifier
8. Input preamplifier
9. Negative supply
November 1982
3
Preliminary Specification
Philips Semiconductors
Product specification
12 W car radio power amplifier
TDA1020
RATINGS
Limiting values in accordance with the Absolute Maximum System (IEC 134)
Supply voltage; operating (pin 3)
V
P
max.
18 V
Supply voltage; non-operating
V
P
max.
28 V
Supply voltage; load dump
V
P
max.
45 V
Non-repetitive peak output current
I
OSM
max.
6 A
Total power dissipation
see derating curves Fig.2
Storage temperature range
T
stg
-
55 to + 150
C
Crystal temperature
T
c
max.
150
°
C
Short-circuit duration of load behind output electrolytic capacitor
at 1 kHz sine-wave overdrive (10 dB); V = 14,4 V
t
sc
max.
100 hours
Fig.2 Power derating curves.
November 1982
4
Preliminary Specification
°
Philips Semiconductors
Product specification
12 W car radio power amplifier
TDA1020
HEATSINK DESIGN EXAMPLE
The derating of 8 K/W of the encapsulation requires the following external heatsink (for sine-wave drive):
10 W in 2
W
at V
P
=
14,4 V
maximum sine-wave dissipation: 5,2 W
T
amb
=
60
°
C maximum
150 60
–
52
R
th j-a
R
th j-tab
R
th tab-h
R
th h-a
=
+
+
=
---------------------- 17,3 K/W
=
,
Since R
th j-tab
+
R
th tab-h
=
8 K/W, R
th h-a
=
17,3
-
8
»
9 K/W.
D.C. CHARACTERISTICS
Supply voltage range (pin 3)
V
P
6 to 18 V
Repetitive peak output current
I
ORM
<
4 A
Total quiescent current
at V
P
= 14,4 V
I
tot
typ.
30 mA
at V
P
= 18 V
I
tot
typ.
40 mA
A.C. CHARACTERISTICS
T
amb
= 25
°
C; V
P
= 14,4 V; R
L
= 4
W
; f = 1 kHz; unless otherwise specified; see also Fig.3
Output power at d
tot
= 10%; with bootstrap (note 1)
V
P
= 14,4 V; R
L
= 2
W
P
o
>
10 W
typ.
12 W
V
P
= 14,4 V; R
L
= 4
W
P
o
>
6 W
typ.
7 W
V
P
= 14,4 V; R
L
= 8
W
P
o
typ.
3,5 W
Output power at d
tot
= 1%; with bootstrap (note 1)
V
P
= 14,4 V; R
L
= 2
W
P
o
typ.
9,5 W
V
P
= 14,4 V; R
L
= 4
W
P
o
typ.
6 W
V
P
= 14,4 V; R
L
= 8
W
P
o
typ.
3 W
Output voltage (r.m.s. value)
R
L
= 1 k
W
; d
tot
= 0,5%
V
o(rms)
typ.
5 V
Output power at d
tot
= 10%; without bootstrap
P
o
>
4,5 W
Voltage gain
preamplifier (note 2)
G
v1
typ.
17,7 dB
16,7 to 18,7 dB
power amplifier
G
v2
typ.
29,5 dB
28,5 to 30,5 dB
total amplifier
G
v tot
typ.
47 dB
46,2 to 48,2 dB
November 1982
5
Preliminary Specification
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