TDA2557 View Datasheet(PDF) - Philips Electronics
Part Name
Description
Manufacturer
TDA2557 Datasheet PDF : 10 Pages
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Philips Semiconductors
Dual TV sound demodulator circuits
Product specification
TDA2555
TDA2557
GENERAL DESCRIPTION
The circuits incorporate two FM demodulator systems to perform the demodulator functions required in a dual sound
carrier TV system for demodulating the sound carriers.
The difference between TDA2555 and TDA2557 is the number of stages of the limiting amplifier.
• Eight (TDA2555) or five (TDA2557) stage limiting amplifier
• Quadrature demodulator for FM detection
• De-emphasis stage
• Output amplifier
• Mute function for each FM demodulator
QUICK REFERENCE DATA
Supply voltage (pins 13 and 15)
Supply current (pins 13 and 15)
AF output voltage (pins 2 and 8)
Total harmonic distortion (note 1)
Signal to weighted noise ratio
VP
typ.
IP
typ.
Vo(rms)
typ.
THD
<
(S + N)/N
typ.
12
V
24,5
mA
600
mV
0,1
%
70
dB
PACKAGE OUTLINE
18-lead DIL; plastic (SOT102); SOT102-1; 1996 November 19.
March 1986
2
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