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| TBA 229-5 Dual Sound FM IF Amplifier TBA 229-5 Bipolar IC Features High AM suppression over a very wide input voltage range High sensitivity Very high symmetry P-DIP-16 The component contains two separate limiter amplifiers with FM demodulators and separate AF outputs. Type TBA 229-5 Ordering Code Q67000-A5133 Package P-DIP-16 Circuit Description The component contains two separate FM sound IF sections for television stereo applications or for multistandard receivers. Each FM section consists of an eight-stage symmetrical limiter amplifier followed by a coincidence demodulator and an AF pre-amplifier with a low-ohmic output. The component features considerably improved AM suppression characteristics with small input signals, as well as a very low frequency deviation between THD min and AM min. Semiconductor Group 1 01.93 TBA 229-5 Absolute Maximum Ratings Parameter Supply voltage Reference current IF input voltage DC voltages DC currents Junction temperature Storage temperature range Thermal resistance (system-air) Operating Range Supply voltage Ambient temperature Frequency VS TA fI 10.5 0 0.1 15.75 70 12 V C MHz Symbol min. VS I REF VI IF rms V 9, 10, 11 V 14, 15, 16 I 1, 2, 4, 5, 7, 8 Tj T stg R th SA 0 0 0 0 0 0 - 40 Limit Values max. 16 2 600 V REF V REF 2 150 125 80 V mA mV V V mA C C K/W Unit Semiconductor Group 2 TBA 229-5 Characteristics V S = 12 V; T A = 25 C; VI IF 14 rms = 10 mV; fI IF 11, 14 = 5.5 MHz; f mod = 1 kHz; f = 30 kHz (if not stated otherwise) Parameter Symbol Limit Values min. typ. max. Current consumption I S Input voltage for limiter threshold Output voltage DC voltage portion Total harmonic distortion VI 11 rms VI 14 rms VQ 4 rms VQ 5 rms VQ 4 = VQ 5 = THD 4,THD 5 Unit Test Condition 25 35 50 50 42 100 100 700 700 6.2 6.2 0.8 mA V V VQ 4, 5 = - 3 dB 510 510 4.8 4.8 600 600 6 6 0.4 mV mV V V % dB dB dB f = 0; THD = THD min THD = THD min AM 4 AM suppression V i rms =1 mV; m = 30% AM 5 Cross-talk rejection 55 55 60 60 VI rms=1 mV; m = 30% fI IF 11 = 5.5 MHz; f 11 = 0 kHz; VI 11 rms = 4 mV; VI 14 rms =10 mV fI IF 11 = 5.74 MHz; f 14 = 0 kHz VI 11 rms = 4 mV; VI 14 rms =10 mV C IF 1-2 = VQ 4/ 60 VQ 5 C IF 1-2 = VQ 4/ 60 VQ 5 Reference voltage V 13 = 5.4 8 0 6 6.6 dB V V V Switching voltage muting ON (AF off) V 16 V 16 OFF Design-Related Values Input resistance Output resistance Input impedance IF residual voltage Hum suppression R I 1, 2 R I 7, 8 R Q 4, 5 VS 3 20 20 100 800 15 32 k k Z I11, 14 VQ 4, 5 (IF) Q hum mV dB fS = 100 Hz VS rms = 500 mV; VS/VQ 4; VS/ VQ5 Frequency deviation AM min - THD min f IF 10 kHz Semiconductor Group 3 TBA 229-5 Block Diagram Semiconductor Group 4 TBA 229-5 Pin Functions Pin No. 1, 2 Function Demodulator tank circuit connection IF 1 (high impedance input - slope of S-curve can be determined by external resistor between pins 1 and 2) GND AF output IF 1 (emitter follower) AF output IF 2 (emitter follower) Supply voltage Demodulator tank circuit connection IF 2 (high impedance input - slope of S-curve can be determined by external resistor between pins 1 and 2) Operating point feedback of limiter amplifier and low end IF 2 (RF decoupling of IF amplifiers with appropriate capacitors is required! Operating point feedback of limiter amplifier IF 2 (RF decoupling of IF amplifiers with appropriate capacitors is required!) IF 2 input (input of limiter amplifier IF 2; internal resistor between pins 9 and 11 is typ. 800 ) GND Internal reference voltage (typ. 6 V) IF 1 input (input of limiter amplifier IF 2; internal resistor between pins 14 and 15 is typ. 800 ) Operating feedback of limiter amplifier IF 1 (RF decoupling of IF amplifiers with appropriate capacitors is required!) Operating point feedback of limiter amplifier and low end IF 1 (RF decoupling of IF amplifiers with appropriate capacitors is required!) 3 4 5 6 7, 8 9 10 11 12 13 14 15 16 Semiconductor Group 5 TBA 229-5 Diagrams AF Output Voltage, Total Harmonic Distortion, Circuit Voltage versus Circuit Q B V Q: THD: Measured at: V cct: Measured at: Q B: Measured at: Circuit: VQ 4 rms; VQ 5 rms THD 4; THD 5 fI IF = 5.5 MHz; f = 30 kHz; f mod = 1 kHz; VI IF = 10 mV V 1, 2 = V 7, 8 fI IF = 5.5 MHz; f = 0 kHz; VI IF = 10 mV IF Q between connections 1, 2 and 7, 8 f I IF = 5.5 MHz/f I IF for 3 dB bandwidth, f = 0 kHz; VI = 10 mV L = 10 turns 0.25 CuL; Vogt Coil Assembly 517 12 000 00 without cap C = 1 nF STYROFLEX Capacitor Semiconductor Group 6 TBA 229-5 Tank Voltage versus f IF Semiconductor Group 7 TBA 229-5 Tank Voltage versus f IF Semiconductor Group 8 TBA 229-5 Total Harmonic Distortion versus Detuning (FM Operation) THD 4 = f (f I IF); VI= 10 mV; V S = 12 V; f mod = 1 kHz, f = 50 kHz, 30 kHz, 12.5 kHz Semiconductor Group 9 TBA 229-5 Total Harmonic Distortion versus Detuning (FM Operation) compensated for minimum total harmonic distortion at f IF = 5.5 MHz; THD = f (fI IF); VI = 10 mV; V S = 12 V; f mod = 1 kHz, f = 50 kHz; 30 kHz; 12.5 kHz Semiconductor Group 10 TBA 229-5 Test Circuit Semiconductor Group 11 TBA 229-5 Application Circuit L = 10 turns 0.2 CuL; Q B approx. 25 e.g. Vogt Coil Assembly 517 12 000 00 Semiconductor Group 12 |
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