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PDF TDA1576 Data sheet ( Hoja de datos )
| Número de pieza | TDA1576 | |
| Descripción | FM/IF amplifier/demodulator circuit | |
| Fabricantes | NXP Semiconductors | |
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INTEGRATED CIRCUITS
DATA SHEET
TDA1576
FM/IF amplifier/demodulator circuit
Product specification
Supersedes data of March 1985
File under Integrated Circuits, IC01
1998 Nov 18
1 page  
Philips Semiconductors
FM/IF amplifier/demodulator circuit
Product specification
TDA1576
LIMITING VALUES
In accordance with the Absolute Maximum Rating System (IEC 134).
SYMBOL
PARAMETER
VP
V2
V5, 14
V12
V13
Ptot
Tstg
Tamb
supply voltage (pin 1)
voltage on pin 2
voltage on pins 5 and 14
voltage on pin 12
voltage on pin 13
total power dissipation
storage temperature
operating ambient temperature
THERMAL CHARACTERISTICS
SYMBOL
Rth j-a
PARAMETER
thermal resistance from junction to ambient in free air
MIN.
0
0
0
0
0
0
−55
−30
MAX.
23
VP
23
7
6
800
+150
+80
UNIT
V
V
V
V
V
mW
°C
°C
VALUE
80
UNIT
K/W
1998 Nov 18
5
5 Page 
Philips Semiconductors
FM/IF amplifier/demodulator circuit
Product specification
TDA1576
handbook, full pagewidth
33 pF
3
4
TDA1576
6
560
pF
7
98
33 pF
(1) 39 pF
(1)
L1
1 kΩ
560
pF
L2
390 Ω
39 pF
MGE457
C8-9
VoAF
Adjustment of the demodulator circuit is obtained with an IF signal which is higher than the 3 dB limiting level; L2 should be short-circuited or detuned;
L1 should be adjusted to minimum d2 distortion, and then L2 to minimum d2 distortion.
(1) Coil data: L1 = L2 = 0.38 µH; Qo = 70; coil former KAN (C).
Fig.11 An example of the TDA1576 when using a demodulator with two tuned circuits.
handbook, full pagewidth
0.3
THD
(%)
0.2
MGE467
0.1
−75 −50 −25 0 +25 +50 +75
(fo = 10.7 MHz)
∆f (kHz)
Fig.12 Total harmonic distortion as a function of detuning; fm = 400 Hz; C8−9 = 6.8 nF; ∆f = ±75 kHz; Vo = 330 mV
for a frequency deviation ∆f = ±75 kHz.
1998 Nov 18
11
11 Page | ||
| Páginas | Total 16 Páginas | |
| PDF Descargar | [ Datasheet TDA1576.PDF ] | |
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