DATA SHEET
Product specification
File under Integrated Circuits, IC01
June 1989
INTEGRATED CIRCUITS
TEA5581
TEA5581T
PLL stereo decoder
June 1989
2
Philips Semiconductors
Product specification
PLL stereo decoder
TEA5581
TEA5581T
GENERAL DESCRIPTION
The TEA5581 PLL stereo decoder is for car and medium-fi radios. It incorporates all the features provided by the
TEA5580 together with a source selector, muting circuit and output amplifiers with adjustable gain. It also features a
switch for radio or cassette function and a 228 kHz voltage-controlled oscillator (VCO) that is locked to the 19 kHz stereo
pilot tone by a phase-locked loop (PLL) system. Subcarrier frequencies of 19, 38, 57 and 114 kHz are regenerated via
I
2
L logic from the VCO output.
The PLL phase detector suppresses phase distortion due to the 57 kHz pilot tone from the German ‘Verkehrs Warnfunk’
(VWF) traffic warning system. Typical suppression of the 19 kHz stereo pilot tone is 40 dB. Adjacent channel interference
is prevented by the use of two demodulators, one driven by the 38 kHz decoding signal and the other at 114 kHz to
suppress the third harmonic of the multiplexed input signal.
The gain of the input amplifier can be adjusted by an external resistor and the circuit includes compensation for an IF
filter typical roll-off frequency of 50 kHz (2 dB down at 38 kHz).
The supply voltage range of the circuit is 7 V to 16 V.
Features
•
Wide supply voltage range
•
Automatic mono/stereo switching (pilot presence detector)
•
Smooth stereo-to-mono change-over at weak signals (signal-dependent stereo channel separation)
•
LED driver for stereo/mono indicator
•
Suppresses:
third harmonics (114 kHz) of multiplexed signal to prevent interference from strong adjacent channels;
phase distortion due to the 57 kHz signal from VWF transmitters
•
Pilot cancelling circuit to give added suppression of 19 kHz stereo pilot tone (up to 25 dB)
•
IF filter roll-off compensation
•
Source selector for radio or cassette input (typ. 90 dB)
•
Mute circuit for 90 dB (typ.) muting of the output level
•
Matrix and two output buffers with adjustable gain (max. 20 dB).
PACKAGE OUTLINES
TEA5581 : 16-lead DIL; plastic (SOT38); SOT38-1; 1996 August 16.
TEA5581T: 16-lead mini-pack; plastic (SO16L; SOT162A); SOT162-1; 1996 August 16.
June 1989
3
Philips Semiconductors
Product specification
PLL stereo decoder
TEA5581
TEA5581T
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Fig.1 Block diagram.
June 1989
4
Philips Semiconductors
Product specification
PLL stereo decoder
TEA5581
TEA5581T
RATINGS
Limiting values in accordance with the Absolute Maximum System (IEC 134)
*
Equivalent to discharging a 100 pF capacitor through a 1.5 k
Ω
resistor.
PARAMETER
CONDITIONS
SYMBOL
MIN.
MAX.
UNIT
Supply voltage range
V
3-5
, V
9-5
−
18
V
LED-driver current (peak value)
−
I
3M
−
75
mA
Total power dissipation
P
tot
see derating curve Fig.2
Storage temperature range
T
stg
−
65
+
150
°
C
Operating ambient
temperature range
T
amb
−
30
+
80
°
C
Electrostatic handling*
V
es
+
600
V
From junction to ambient in free air
SOT38
R
th j-a
75 K/W
SOT162
R
th j-a
95 K/W
Fig.2 Power derating curve.
June 1989
5
Philips Semiconductors
Product specification
PLL stereo decoder
TEA5581
TEA5581T
DC CHARACTERISTICS
Measured in the circuit of Fig.7; V = 8.5 V; T
amb
= 25
°
C; all DC voltages are with respect to pin 5; all currents are
positive into the IC.
PARAMETER
CONDITIONS
SYMBOL
MIN.
TYP.
MAX.
UNIT
Supply voltage
R1 = 75
Ω
V
S
7.0
8.5
18
V
Total current consumption
without LED driver
I
tot
−
15
20
mA
Power dissipation
P
tot
−
125
−
mW
Voltage
pin 15
V
15
−
2.1
−
V
pins 12 and 16
V
12
, V
16
3.2
3.6
4.0
V
DC output current
pins 2 and 14
−
I
14
,
−
I
2
225
320
450
µ
A
Output current
pin 3
−
I
3
−
−
20
mA
Switch “VCO-OFF”
voltage
V
7
−
2.2
−
V
Switch “VCO-OFF”
current
I
7
−
50
75
µ
A
June 1989
6
Philips Semiconductors
Product specification
PLL stereo decoder
TEA5581
TEA5581T
AC CHARACTERISTICS
Measured in the circuit of Fig.7; V
S
= 8.5 V; T
amb
= 25
°
C; AC measurements have an input MUX-signal of 1 V
(peak-to-peak); V
pilot
= 32 mV (9%); f
m
= 1 kHz; oscillator adjusted to 228 kHz at V
i
= 0 V; values are measured with an
external roll-off network of 50 kHz (2 dB down at 38 kHz) at the input (dashed components R
S
and C
S
in Fig.7); unless
otherwise specified
PARAMETER
CONDITIONS
SYMBOL
MIN.
TYP.
MAX.
UNIT
Transimpedance
V
O
/I
I
0.13
0.15
0.17
V/
µ
A
Input current (RMS value)
I
I(rms)
−
−
12
µ
A
Overall gain
mono; R3 = 47 k
Ω
G
o
(V
o
/V
i
)
9.0
10.0
11.0
dB
AF output voltage
(RMS value)
V
12
= V
16
0.95
1.14
1.33
V
AF output voltage
(RMS value)
V
2
= V
14
−
−
500
mV
Total harmonic distortion
note 1;
V
O (rms)
= 1 V
THD
−
0.1
0.5
%
Output voltage
THD = 1%
V
12
= V
16
−
1.5
−
V
Output channel
unbalanced
V
12
= V
16
−
0.2
1.0
dB
Channel separation
IF roll-off
frequency = 50 kHz
L = 1; R = 0
α
26
40
−
dB
S/N ratio
bandwidth
20 Hz to 16 kHz
S/N
−
76
−
dB
bandwidth IEC 79
(curve Din A)
S/N
−
82
−
dB
SDS control
see Fig.6
Channel separation
V
4
= 1.0 V
α
5
10
15
dB
Full stereo
channel separation
≥
26 dB
V
4
−
1.2
1.25
V
Full mono
channel separation
≤
1 dB
V
4
0.75
0.8
−
V
Stereo/mono switch
note 2; see Fig.5;
R4 = 180 k
Ω
Switching to:
stereo
V
pilot
−
14
20
mV
mono
V
pilot
4
−
−
mV
Hysteresis
∆
V
I
−
4.5
−
mV
June 1989
7
Philips Semiconductors
Product specification
PLL stereo decoder
TEA5581
TEA5581T
Carrier and harmonic
suppression at the output
note 3
Pilot signal suppression
f = 19 kHz;
R4 = 180 k
Ω
; note 2;
see Figs 3 and 4
α
19
32
40
−
dB
Subcarrier suppression
f = 38 kHz
α
38
−
50
−
dB
f = 57 kHz
α
57
−
50
−
dB
f = 228 kHz
α
228
−
75
−
dB
Intermodulation suppression
note 4
f
m
= 10 kHz
spurious signal
f
s
= 1 kHz
α
2
−
50
−
dB
f
m
= 13 kHz
spurious signal
f
s
= 1 kHz
α
3
−
50
−
dB
VWF tone suppression
f = 57 kHz
note 5
α
57
−
80
−
dB
SCA tone rejection
f = 67 kHz
note 6
α
67
−
70
−
dB
ACI rejection
note 7
f = 114 kHz
α
114
−
90
−
dB
f = 190 kHz
α
190
−
60
−
dB
Ripple rejection
Ripple rejection
f = 100 Hz;
V
ripple
= 100 mV;
mono
RR
100
−
50
−
dB
VCO
Oscillator frequency
adjustable with R5
f
osc
−
228
−
kHz
Capture range
deviation from
228 kHz centre
frequency;
V
pilot
= 32 mV
∆
f/f
−
6
−
%
Temperature coefficient
uncompensated
TC
−
−
200
×
100
−6
−
K
−
1
PARAMETER
CONDITIONS
SYMBOL
MIN.
TYP.
MAX.
UNIT
June 1989
8
Philips Semiconductors
Product specification
PLL stereo decoder
TEA5581
TEA5581T
Source selector
Suppression of
MPX signal
V
10
≥
2 V
α
80
90
−
dB
Switching level
cassette to radio
voltage
V
IL
−
−
0.8
V
current
I
IL
−
10
25
µ
A
Output amplifiers
Gain
note 8; R
6
/R7
G
v
−
−
20
dB
Output impedance
Z
o
−
200
500
Ω
External load impedance
|Z
I
|
5
−
−
k
Ω
Suppression (mute)
V
11
=
≤
0,8 V
α
84
90
−
dB
DC offset
voltage at
outputs during
mute switching
mute OFF-to-ON
∆
V
12
,
∆
V
16
−
1.0
−
mV
mute ON-to-OFF
∆
V
12
,
∆
V
16
−
2.0
−
mV
Muting circuit
Input voltage
mute ON
V
IL
−
−
0.8
V
mute OFF
V
IH
2.0
−
V
S
V
Input current
mute ON
I
IL
−
10
25
µ
A
mute OFF
I
IH
−
−
1
µ
A
PARAMETER
CONDITIONS
SYMBOL
MIN.
TYP.
MAX.
UNIT
June 1989
9
Philips Semiconductors
Product specification
PLL stereo decoder
TEA5581
TEA5581T
Notes to the characteristics
1. Guaranteed for mono, mono
+
pilot and stereo.
2. Also adjustable.
3. Reference output voltage at 1 kHz (measured channel R, pin 16).
4. Intermodulation suppression (Beat-Frequency Components):
measured with 91% mono signal; f
m
= 10 or 13 kHz; 9% pilot signal.
5. Traffic radio (VWF) tone suppression:
measured with 91% stereo signal; f
m
= 1 kHz; 9% pilot signal; 5% traffic subcarrier (f = 57 kHz; 60% AM modulated
with f
mod
= 23 Hz).
6. SCA (Subsidiary Communication Authorization) tone rejection:
measured with 81% mono signal; f
m
= 1 kHz; 9% pilot signal; 10% SCA-subcarrier (f
s
= 67 kHz, unmodulated).
7. ACI (Adjacent Channel Interference) rejection at:
measured with 90% mono signal; f
s
= 1 kHz; 9% pilot signal; 1% spurious signal (f
s
= 110 or 186 kHz, unmodulated).
8. Maximum permitted value of feedback resistor = 220 k
Ω
.
α
2
V
o signal
(
)
at 1 kHz
(
)
V
o spurious
(
)
at 1 kHz
(
)
--------------------------------------------------------------- f
s
2
10 kHz
×
(
)
=
19 kHz
–
;
=
α
3
V
o signal
(
)
at 1 kHz
(
)
V
o spurious
(
)
at 1 kHz
(
)
--------------------------------------------------------------- f
s
3
13kHz
×
(
)
=
38kHz
–
;
=
α
57
V
o signal
(
)
at 1 kHz
(
)
V
o spurious
(
)
at 1 kHz
23 Hz
±
(
)
-------------------------------------------------------------------------------------
=
α
67
V
o signal
(
)
at 1 kHz
(
)
V
o spurious
(
)
at 9kHz
(
)
--------------------------------------------------------------- f
s
2
38 kHz
×
(
)
=
67 kHz
–
;
=
α
114
V
o signal
(
)
at 1 kHz
(
)
V
o spurious
(
)
at 4kHz
(
)
-------------------------------------------------------------- f
s
3
38 kHz
×
(
)
=
110 kHz
–
;
=
α
190
V
o signal
(
)
at 1 kHz
(
)
V
o spurious
(
)
at 4kHz
(
)
-------------------------------------------------------------- f
s
5
38 kHz
×
(
)
=
186 kHz
–
;
=
June 1989
10
Philips Semiconductors
Product specification
PLL stereo decoder
TEA5581
TEA5581T
Fig.3 Pilot suppression plotted against resistance (R4).
Fig.4 Pilot suppression plotted against pilot input voltage level.
(1) 220 k
Ω
(2) 180 k
Ω
(3) 150 k
Ω
June 1989
11
Philips Semiconductors
Product specification
PLL stereo decoder
TEA5581
TEA5581T
(1) Switching from mono to stereo.
(2) Switching from stereo to mono.
Fig.5 Pilot sensitivity against resistance (R4).
Fig.6 Channel separation against V
SDS.
June 1989
12
Philips Semiconductors
Product specification
PLL stereo decoder
TEA5581
TEA5581T
APPLICATION INFORMATION
Fig.7 Application diagram.
(1) 25% tolerance (all other resistors have a 5% tolerance).
(2) 1% tolerance (NPO).
June 1989
13
Philips Semiconductors
Product specification
PLL stereo decoder
TEA5581
TEA5581T
PACKAGE OUTLINE
UNIT
A
max.
1
2
b
1
c
E
e
M
H
L
REFERENCES
OUTLINE
VERSION
EUROPEAN
PROJECTION
ISSUE DATE
IEC
JEDEC
EIAJ
mm
inches
DIMENSIONS (inch dimensions are derived from the original mm dimensions)
SOT38-1
92-10-02
95-01-19
A
min.
A
max.
b
max.
w
M
E
e
1
1.40
1.14
0.055
0.045
0.53
0.38
0.32
0.23
21.8
21.4
0.86
0.84
6.48
6.20
0.26
0.24
3.9
3.4
0.15
0.13
0.254
2.54
7.62
0.30
8.25
7.80
0.32
0.31
9.5
8.3
0.37
0.33
2.2
0.087
4.7
0.51
3.7
0.15
0.021
0.015
0.013
0.009
0.01
0.10
0.020
0.19
050G09
MO-001AE
M
H
c
(e )
1
M
E
A
L
seating plane
A
1
w
M
b
1
e
D
A
2
Z
16
1
9
8
b
E
pin 1 index
0
5
10 mm
scale
Note
1. Plastic or metal protrusions of 0.25 mm maximum per side are not included.
(1)
(1)
D
(1)
Z
DIP16: plastic dual in-line package; 16 leads (300 mil); long body
SOT38-1
June 1989
14
Philips Semiconductors
Product specification
PLL stereo decoder
TEA5581
TEA5581T
UNIT
A
max.
A
1
A
2
A
3
b
p
c
D
(1)
E
(1)
(1)
e
H
E
L
L
p
Q
Z
y
w
v
θ
REFERENCES
OUTLINE
VERSION
EUROPEAN
PROJECTION
ISSUE DATE
IEC
JEDEC
EIAJ
mm
inches
2.65
0.30
0.10
2.45
2.25
0.49
0.36
0.32
0.23
10.5
10.1
7.6
7.4
1.27
10.65
10.00
1.1
1.0
0.9
0.4
8
0
o
o
0.25
0.1
DIMENSIONS (inch dimensions are derived from the original mm dimensions)
Note
1. Plastic or metal protrusions of 0.15 mm maximum per side are not included.
1.1
0.4
SOT162-1
8
16
w
M
b
p
D
detail X
Z
e
9
1
y
0.25
075E03
MS-013AA
pin 1 index
0.10
0.012
0.004
0.096
0.089
0.019
0.014
0.013
0.009