tda1551q, Ham- CB Radio, Karty katalogowe
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INTEGRATED CIRCUITS
DATA SHEET
TDA1551Q
2 x 22 W BTL car radio power
amplifier with diagnostic facility
Preliminary specification
File under Integrated Circuits, IC01
July 1994
Philips Semiconductors
Preliminary specification
2 x 22 W BTL car radio power amplifier
with diagnostic facility
TDA1551Q
FEATURES
·
Requires very few external components
·
Flexible in use - quad, single ended or stereo BTL
·
I
2
C-bus control
·
Dynamic distortion detector
·
Thermal protection
·
Electrostatic discharge protection
·
Output status information
·
No switch-ON/switch-OFF plop
·
Power supply dip detection
·
Flexible leads
·
High output power
·
Low thermal resistance
·
MUTE/sleep mode by writing to I
2
C-bus
·
Identical inputs (inverting and non-inverting).
·
Stand-by mode
·
Fixed gain
DESCRIPTION
·
Good ripple rejection
The TDA1551Q is an integrated class-B output amplifier
encased in a 17-lead single-in-line plastic power package.
The device contains 4
·
Load dump protection
·
AC/DC short circuit safe to ground and V
P
´
11 W single-ended (SE) or 2
´
22
W BTL amplifiers and is intended for use in car radio
applications.
·
Reverse polarity safe
·
Low offset voltage at output
·
Capable of handling high energy at outputs (V
P
= 0 V)
QUICK REFERENCE DATA
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
V
P
supply voltage range
operating
6
14.4
18
V
V
P
supply voltage
non-operating
-
-
30
V
I
P
total quiescent current
-
80
160
mA
Quad-single-ended application
P
o
output power
R
L
= 4
W
; THD = 10 %
-
6
-
W
R
L
= 2
W
; THD = 10 %
-
11
-
W
V
no
output voltage noise
R
S
= 0
W
-
50
-
m
V
Stereo BTL application
P
o
output power
R
L
= 4
W
; THD = 10 %
-
22
-
W
V
no
output voltage noise
R
S
= 0
W
-
70
-
m
V
D
V
o
DC output offset voltage
-
-
100
mV
ORDERING INFORMATION
EXTENDED TYPE
NUMBER
PACKAGE
PINS
PIN POSITION
MATERIAL
CODE
TDA1551Q
17
SIL bent to DIL
plastic
SOT243R
(1)
Note
1. SOT243-1; 1996 September 06.
July 1994
2
Philips Semiconductors
Preliminary specification
2 x 22 W BTL car radio power amplifier
with diagnostic facility
TDA1551Q
Fig.1 Block diagram.
July 1994
3
Philips Semiconductors
Preliminary specification
2 x 22 W BTL car radio power amplifier
with diagnostic facility
TDA1551Q
PINNING
SYMBOL
PIN
DESCRIPTION
-
INV1
1
non-inverting input 1
INV1
2
inverting input 1
handbook, halfpage
INV1
1
GND
3
signal ground
INV1
2
V
PRR
4
supply voltage ripple rejection
SGND
3
V
p1
5
positive supply voltage 1
OUT1
6
output 1
V
PRR
4
GND1
7
power ground 1
V
P
1
5
OUT2
8
output 2
OUT1
6
SB
9
standby
PGDN1
7
OUT3
10
output 3
OUT2
8
GND2
11
power ground 2
TDA1551Q
STBY
9
OUT4
12
output 4
V
p2
13
positive supply voltage 2
OUT3
10
INV2
14
inverting input 2
PGND2
11
-
INV2
15
non-inverting input 2
OUT4
12
SCL
16
serial clock line
V
P
2
13
SDA
17
serial data line
INV2
14
NINV2
15
SCL
16
SDA
17
MLA007
Fig.2 Pin configuration
July 1994
4
Philips Semiconductors
Preliminary specification
2 x 22 W BTL car radio power amplifier
with diagnostic facility
TDA1551Q
FUNCTIONAL DESCRIPTION
The TDA1551Q contains four identical amplifiers with differential input stages (two inverting and two non-inverting) which
can be used in SE or BTL applications. The gain of each amplifier is fixed at 20 dB for SE and 26 dB for BTL. The device
also contains an I
2
C-bus facility which operates in the read or write mode.
In the
write
mode the device can be switched to either the sleep condition (low sleep current of 0.6 mA typ.), the MUTE
condition or the ON condition.
In the
read
mode an 8-bit status word is available. Data bits D0 to D3 contain status information of each of the 4 outputs.
If the device is switched to the ON or MUTE condition and there is a short-circuit at one or more outputs, the power
transistors will be outside their safe operating area consequently one or more bits of D0 to D3 will be HIGH. Bits D0 to
D3 are LOW when in the normal safe operating area. Bit D4 is normally LOW if one or more channels reaches the clipping
level D4 will go HIGH. Bit D5 is normally LOW, if the crystal temperature reaches 150
°
C D5 will go HIGH. After a
power-on reset bit 7 will go HIGH and a dip in the power supply will be noticed. Bit 7 will go LOW after the I
2
C-bus is
read. When pin 9 is LOW the device will switch OFF and the supply current will be reduced to 0.1 mA (max.).
handbook, halfpage
6
8
10
12
4 K/W
0.8 K/W
0.1 K/W
MLA009
Fig.3 Thermal equivalent resistance network.
July 1994
5
virtual junction
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