TDA9821 Datasheet | NXP Semiconductors

FEATURES - Two alignment-free PLL FM demodulators - Automatic second sound carrier mute - Mono and dual channel application - Low power consumption - Few external ponents required. QUICK REFERENCE DATA SYMBOL VP IP IM Vi(rms) Vo(rms) S+N ------------N α8/7 RR Tamb PARAMETER supply voltage (pin 14) supply current (pin 14) AC peak current (pins 7 and 8) input signal (RMS value) S+N ------------- = 40 d B N in accordance with “CCIR 468-3” f = 50 to 12500 Hz VRR < 200 m V; f = 70 Hz CONDITIONS MIN. 4.5 23 - - 0.4 64 60 16 0 TYP. 5.0 30 - 150 0.5 68 70 20 - GENERAL DESCRIPTION The TDA9821 is a monolithic, integrated, TV FM intercarrier sound demodulator for all FM standards. The circuit contains two separate FM demodulators using Phase Locked Loop (PLL) reference frequency generation. The circuit requires a minimum number of external ponents. MAX. 8.8 37 1.5 250 0.6 - - - 70 UNIT V m A m A µV V d B d B d B °C output signal (pins 7 and 8; RMS value) ∆fi = ±50 k Hz signal plus noise-to-noise ratio (pins 7 and 8) crosstalk attenuation supply voltage ripple rejection (pins 7 and 8) operating ambient temperature ORDERING INFORMATION PACKAGE TYPE NUMBER NAME TDA9821 DIP16 DESCRIPTION plastic dual in-line package; 16 leads (300 mil); long body VERSION SOT38-1 1996 Nov 20 Philips Semiconductors Product specification Dual channel TV FM intercarrier sound demodulator BLOCK DIAGRAM Rs (1) handbook, full pagewidth 9 8 V AF1 5.5 MHz (B/G) 1 7-STAGE LIMITER AMPLIFIER 1 VCO 1 5.74 MHz (B/G) intercarrier 15 7-STAGE LIMITER AMPLIFIER 2 VCO 2 SUPPLY mute 13 14 12 11 optional stereo channel separation adjustment VCO ref VP = 4.5 to 8.8 V Rpot 10 V AF2 MHA424 (1) (1) Resistor and potentiometer between capacitor and earth are inserted if adjustment of stereo channel separation is required. Fig.1 Block diagram. 1996 Nov 20 Philips Semiconductors Product specification Dual channel TV FM intercarrier sound demodulator PINNING SYMBOL IN1(B/G)...