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| (R) 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 = 25C; 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 2.5 18 18 50 35 57 3 20 22 80 50 0.5 1 2 160 40 1 50 5 7.5 10 200 57.5 3.5 22 KHz KHz dB dB dB dB DEG DEG DEG K dB Vrms mVrms K Ph Phase non linearity Ri S/N Vi RL Input Impedance Signal to Noise Ratio Input Signal Load Impedance LIMITER RA VOL VOH Resistance pin 8-12 Comp. Output LOW Comp. Output HIGH Duty Cycle IO = +0.5mA IO = -0.5mA Vi = 1mVrms 4 50 15 21 28 1 K V V % OSCILLATOR FOSC Oscillator Frequency Output Amplitude VCLL VOLH Clock Input Level LOW Clock Input Level HIGH 4 FSEL = Open FSEL = Closed to Ground 4.332 8.664 5 1 MHz MHz VPP V V CRYSTAL TYPE = EURO QUARTZ Note (1): The phase non linearity is defined as: Ph = | -2 f2 + f1 + f3 | where fx is the input-output phase difference at the frequency fx (x = 1,2,3) Measure A B C f1 (KHz) 56.5 56 55.5 f2 (KHz) 57 57 57 f3 (KHz) 57.5 58 58.5 Ph max <5 <7.5 <10 Note (2): The 3th harmonic (57KHz) at the output (pin12) must be less than -40dB in respect to the input signal plus gain. 3/6 TDA7332 mm MIN.. A a1 a2 b b1 C c1 D (1) E e e3 F (1) G L M S 3.8 4.6 0.4 8.55 5.8 1.27 7.62 4 5.3 1.27 0.68 8 (max.) 0.150 0.181 0.016 0.35 0.19 0.5 45 (typ.) 8.75 6.2 0.336 0.228 0.050 0.300 0.157 0.209 0.050 0.027 0.344 0.244 0.1 TYP. MAX.. MIN.. 1.75 0.25 1.6 0.46 0.25 0.014 0.007 0.020 0.004 inch TYP.. MAX.. 0.069 0.009 0.063 0.018 0.010 DIM. OUTLINE AND MECHANICAL DATA SO14 (1) D and F do not include mold flash or protrusions. Mold flash or potrusions shall not exceed 0.15mm (.006inch). 4/6 TDA7332 DIM. MIN. a1 B b b1 D E e e3 F I L Z 1.27 0.51 1.39 mm TYP. MAX. MIN. 0.020 1.65 0.5 0.25 20 8.5 2.54 15.24 7.1 5.1 3.3 2.54 0.050 0.055 inch TYP. MAX. OUTLINE AND MECHANICAL DATA 0.065 0.020 0.010 0.787 0.335 0.100 0.600 0.280 0.201 0.130 0.100 DIP14 5/6 TDA7332 Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specification mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics. The ST logo is a registered trademark of STMicroelectronics (c) 1999 STMicroelectronics - Printed in Italy - All Rights Reserved STMicroelectronics GROUP OF COMPANIES Australia - Brazil - China - Finland - France - Germany - Hong Kong - India - Italy - Japan - Malaysia - Malta - Morocco Singapore - Spain - Sweden - Switzerland - United Kingdom - U.S.A. http://www.st.com 6/6 |
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