Philips tda3825 DATASHEETS

INTEGRATED CIRCUITS

DATA SH EET

TDA3825

Single FM TV-sound demodulator
circuit

Product specification
File under Integrated Circuits, IC02

September 1988

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

Philips Semiconductors Product specification

Single FM TV-sound demodulator circuit TDA3825

September 1988 3

Fig.1 Block diagram.

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