TDA7332

® TDA7332 RDS FILTER HIGH PERFORMANCE, STABLE 57KHz FILTER HIGH SELECTIVITY FLAT GROUP DELAY HIGH PERFORMANCE LIMITER VERY FEW EXTERNAL COMPONENTS 4.332MHz CLOCK OSCILLATOR (8.664MHz OPTIONAL) DESCRIPTION The TDA7332 is an RDS filter, realized in switched capacitor technique. The 4 biquad stage architecture is working with 4.332MHz clock. Optionally a 8.664MHz xtal can be used. The filter has a center frequency of 57KHz and a bandwidth of 3KHz. Input 2nd order antialiasing filter and output smoothing filter are provided. DIP14 SO14 ORDERING NUMBERS: TDA7332 TDA7332D TDA7332DIE1 (Chip on wafer) TEST CIRCUIT November 1999 1/6 TDA7332 ABSOLUTE MAXIMUM RATINGS Symbol VS Top Tstg Supply Voltage Operating Temperature Range Storage Temperature Parameter Value 7 -40 to 85 -40 to 150 Unit V °C °C THERMAL DATA Symbol Rth j-case Description Thermal Resistance Junction-case Typ. DIP14 100 SO14 200 Unit °C/W PIN CONNECTION (Top view) BONDING PAD LOCATIONS (Top view) 2/6 TDA7332 ELECTRICAL CHARACTERISTICS (VCC = 5V, Tamb = 25°C; fosc = 4.332MHz; VIN = 20mVrms unless otherwise specified) Symbol Parameter Test Condition Min. Typ. Max. Unit SUPPLY SECTION VCC IS Supply Voltage Supply Current 4.5 6 5 9 5.5 14 V mA FILTER FC BW G A Center Frequency 3dB Bandwidth Gain Attenuation f = 57KHz ∆f = +4KHz f = 38KHz; Vi = 500mVrms f = 67KHz; Vi = 250mVrms A (see note1) B (see note1) C (see note1) 100 Vi = 3mVrms f = 19KHz; T3 < –40dB (see note2) f = 57KHz (RDS + ARI) Pin 12 100 30 56.5 2....