TEA5594 View Datasheet(PDF) - Philips Electronics
Part Name
Description
MFG CO.
TEA5594 Datasheet PDF : 17 Pages
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Philips Semiconductors
AM/FM radio receiver circuit
Product specification
TEA5594
handbook, full pagewidth
IF +
I level
IF +
p6
soft
mute 1
FM
mixer output 2
2.3 V
Vref
FM RF +
FM MIXER
2 pF
FM RF +
1.5
kΩ
32 GND FM front-end
31 FM RF decoupled
1.6 V
FM IF 3
2.3
V
FM IF1
input 4
2.3 V
FM IF1
output 5
2.2 V
360 Ω
(4 x)
FM OSC
FM OSC
330 Ω
330 Ω
IF + p6
12.5
kΩ
330
Ω
30 FM RF input
0.9 V
29 FM RF AGC
1 to 0.3 V
28 FM RF output
FM IF 6
2.3 V
FM IF
input 7
2.3 V
360 Ω
(3 x)
IF + p6
TEA5594
FM stabilizer 8
2.3 V
IF + p8
IF + p8
AM +
FM RF +
FM RF
27 stabilizer
1.6 V
26
FM oscillator
25 Ω
25
AM oscillator
VP 9
2.7 to 15 V
GND (FM - IF 10
AM)
FM demodulator 11
1.3 V
1
kΩ
IF + p8
AM
+
AF output AM/FM 12
2.7
AM ~ 0.3 V
FM ~ 1.1 V
VP
kΩ
AM/FM
level indicator
output
13
AM
AGC
V ref
AM IF input 14 1.5 kΩ
0.8 V
14
kΩ
AM AGC 15
1.5 to1.1 V
AM AGC
2 kΩ
mixer output 16
1.6 V
AM +
3.9
kΩ
AM
+
1.7
kΩ
V ref
4.2
kΩ
24 AM voltage stabilizer
1.6 V
23 AM RF decoupled
1.1 V
22 AM RF input
8.9 kΩ
10.3
kΩ
AM + IF + p8
IF counter
21 enable input
IF counter
20 output
2 kΩ
AM +
700 Ω
GND
19 (oscillator buffer)
510 Ω
FM RF +
AM
18 oscillator output
300 Ω
FM
17 oscillator output
AM OSC
AM OSC
MLA284
Fig.2 Equivalent circuit diagram.
March 1991
5
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