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INTEGRATED CIRCUITS
DATA SH EET
TDA3825
Single FM TV-sound demodulator
circuit
Product specification
File under Integrated Circuits, IC02
September 1988
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Philips Semiconductors Product specification
Single FM TV -sound demodulator circuit TDA3825
GENERAL DESCRIPTION
The TDA3825 is a single FM demodulator system with external AF input and mute.
Features
• Supply voltage range from 4.5 V to 13.2 V
• AC coupled AF stage
• Multiple input AF operational amplifier with offset compensation
• External AF input
• High AF output voltage with low distortion
• AF gain of 0 dB without external components
• Frequency response can be determined by external components
• High ripple rejection
• Low switching noise between AF and mute
QUICK REFERENCE DATA
PARAMETER CONDITIONS SYMBOL MIN. TYP. MAX. UNIT
Supply voltage (pin 11) V
P
4.5 5.0 13.2 V
Supply current (pin 11)
= 5.0 V I
V
P
= 12 V I
V
P
P
P
− 16 − mA
− 18 − mA
FM demodulator
AF output voltage (pin 5)
(RMS value) ∆f = 50 kHz;
=11
Q
B
V
5−1
− 0.5 − V
Signal plus weighted-noise
to weighted-noise ratio (S + W)/W 65 70 − dB
Total harmonic distortion THD − 0.3 0.5 %
Source selector
AF output voltage (pin 12)
(RMS value) THD ≤ 0.1%;
= 6 dB
V
u
V
12−1
− 1.0 − V
PACKAGE OUTLINE
14-lead DIL; plastic (SOT27); SOT27-1; 1996 November 25.
September 1988 2
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Philips Semiconductors Product specification
Single FM TV-sound demodulator circuit TDA3825
September 1988 3
Fig.1 Block diagram.
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Philips Semiconductors Product specification
Single FM TV-sound demodulator circuit TDA3825
RATINGS
Limiting values in accordance with the Absolute Maximum System (IEC 134)
PARAMETER CONDITIONS SYMBOL MIN. MAX. UNIT
Supply voltage (pin 11) V
External DC load resistance R
Total power dissipation P
Storage temperature range T
Operating ambient temperature range T
P
L
tot
stg
amb
4.5 13.2 V
5 − kΩ
− 400 mW
−25 + 125 °C
0 + 70 °C
September 1988 4