TEA5570.PDF

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INTEGRATED CIRCUITS
DATA SHEET
TEA5570
RF/IF circuit for AM/FM radio
Product specification
File under Integrated Circuits, IC01
September 1987
11018321.003.png
Philips Semiconductors
Product specification
RF/IF circuit for AM/FM radio
TEA5570
GENERAL DESCRIPTION
The TEA5570 is a monolithic integrated radio circuit for use in portable receivers and clock radios. The IC is also
applicable to mains-fed AM and AM/FM receivers and car radio-receivers. Apart from the AM/FM switch function the IC
incorporates for AM a double balanced mixer, 'one-pin' oscillator, i.f. amplifier with a.g.c. and detector, and a level
detector for tuning indication. The FM circuitry comprises i.f. stages with a symmetrical limiter for a ratio detector. A level
detector for mono/stereo switch information and/or indication complete the FM part.
Features
·
Simple d.c. switching for AM to FM by only one d.c. contact to ground (no switch contacts in the i.f. channel, a.f. or
level detector outputs)
·
AM and FM gain control
·
Low current consumption (I tot = 6 mA)
·
Low voltage operation (V P = 2,7 to 9 V)
·
Ability to handle large AM signals; good i.f. suppression
·
Applicable for inductive, capacitive and diode tuning
·
Double smoothing of a.g.c. line
·
Short-wave range up to 30 MHz
·
Lumped or distributed i.f. selectivity with coil and/or ceramic filters
·
AM and a.g.c. output voltage control
·
Distribution of PCB wiring provides good frequency stability
·
Economic design for 'AM only' receivers.
QUICK REFERENCE DATA (at T amb = 25
°
C)
Supply voltage
V P = V 7-16
typ.
5,4 V
Supply current
I 7
typ.
6,2 mA
AM performance (pin 2) for m = 0,3
Sensitivity
at V o = 10 mV
V i
typ.
1,7
m
V
at S/N = 26 dB
V i
typ.
16
m
V
A.F. output voltage at V i = 1 mV
V o
typ.
100 mV
Total harmonic distortion at V i = 1 mV
THD
typ.
0,5 %
FM performance (pin 1) for
D
f =
±
22,5 kHz
limiting sensitivity,
-
3 dB
V i
typ.
110
m
V
Signal-to-noise ratio for V i = 1 mV
S/N
typ.
65 dB
A.F. output voltage at V i = 1 mV
V o
typ.
100 mV
Total harmonic distortion at V i = 1 mV
THD
typ.
0,3 %
AM suppression at V i = 10 mV
AMS
typ.
50 dB
PACKAGE OUTLINE
16-lead DIL; plastic (SOT38); SOT38-1; 1996 July 25.
September 1987
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11018321.004.png 11018321.005.png
Philips Semiconductors
Product specification
RF/IF circuit for AM/FM radio
TEA5570
September 1987
3
11018321.006.png
Philips Semiconductors
Product specification
RF/IF circuit for AM/FM radio
TEA5570
RATINGS
Limiting values in accordance with the Absolute Maximum System (IEC 134)
Supply voltage (pin 7)
V P = V 7-16
max.
12 V
Voltage at pins 4, 5, 9 and 10 to pin 16 (ground)
V n-16
max.
12 V
Voltage range at pin 8
V 8-16
V P ± 0,5 V
Current into pin 5
I 5
max.
3 mA
Total power dissipation
P tot
see Fig.2
Storage temperature range
T stg
-
55 to
+
150
C
Operating ambient temperature range
T amb
- 30 to
+ 85
° C
Fig.2 Power derating curve.
September 1987
4
°
11018321.001.png
Philips Semiconductors
Product specification
RF/IF circuit for AM/FM radio
TEA5570
D.C. CHARACTERISTICS
V P = 6 V; T amb = 25 ° C; measured in Fig.10; unless otherwise specified
PARAMETER
SYMBOL
MIN.
TYP.
MAX.
UNIT
Supply (pin 7)
Supply voltage (note 1)
V P = V 7-16
2,4
5,4
9,0
V
Voltages
at pin 1 (FM)
V 1-16
-
1,42
-
V
at pin 1; - I 1 = 50 m A (FM)
V 1-16
-
1,28
-
V
at pins 2 and 3 (AM)
V 2,3-16
-
1,42
-
V
at pin 6
V 6-16
-
0,7
-
V
at pin 11
V 11-16
-
1,4
-
V
at pin 13
V 13-16
-
0,7
-
V
at pin 14
V 14-16
-
4,3
-
V
Currents
Supply current
I 7
4,2
6,2
8,2
mA
Current supplied from pin 1 (FM)
-
I 1
-
-
50
m
A
Current supplied from pin 12
-
I 12
-
-
20
m
A
Current supplied from pin 15
-
I 15
-
30
-
m
A
Current into pin 4 (AM)
I 4
-
0,6
-
mA
Current into pin 5 (FM) (note 4)
I 5
-
0,35
-
mA
Current into pin 8 (AM)
I 8
-
0,3
-
mA
Current into pins 9, 10 (FM)
I 9,10
-
0,65
-
mA
Current into pin 14
I 14
-
0,4
-
mA
Power consumption
P
-
40
-
mW
September 1987
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