Order this document by MC1490/D The MC1490 is an integrated circuit featuring wide–range AGC for use in RF/IF amplifiers and audio amplifiers over the temperature range, –40° to +85°C. • High Power Gain: 50 dB Typ at 10 MHz 45 dB Typ at 60 MHz 35 dB Typ at 100 MHz • Wide Range AGC: 60 dB Min, DC to 60 MHz • • WIDEBAND AMPLIFIER WITH AGC SEMICONDUCTOR TECHNICAL DATA 6.0 V to 15 V Operation, Single Polarity Supply See MC1350D for Surface Mount MAXIMUM RATINGS (TA = +25°C, unless otherwise noted.) Rating Symbol Value Unit VCC +18 Vdc VAGC VCC Vdc Power Supply Voltage AGC Supply Input Differential Voltage VID 5.0 Vdc Operating Temperature Range TA –40 to +85 °C Tstg –65 to +150 °C TJ +150 °C Storage Temperature Range Junction Temperature 8 1 P SUFFIX PLASTIC PACKAGE CASE 626 ORDERING INFORMATION Device MC1490P PIN CONNECTIONS Operating Temperature Range Package TA = – 40° to +85°C Plastic Representative Schematic Diagram 2 VCC 1.5 k VAGC 1 8 VCC 2 7 Substrate Ground GND 3 6 Noninverting Input Inverting Input 4 5 AGC Input – + 70 (Top View) 5.5 k 12.1 k 5 470 8 (+) Outputs (–) 1 2.0 k 470 SCATTERING PARAMETERS (VCC = +12 Vdc, TA = +25°C, Zo = 50 Ω) f = MHz Typ 4 (–) Output (+) Output (–) 45 Inputs (+) Parameter 1.4 k 66 2.8 k 6 200 200 2.8 k 5.0 k 5.0 k 5.6 k 1.1 k 1.1 k 1.9k 8.4 k 200 3 Substrate 7 Pins 3 and 7 should both be connected to circuit ground. Symbol 30 60 Unit Input Reflection Coefficient |S11| θ11 0.95 –7.3 0.93 –16 – deg Output Reflection Coefficient |S22| θ22 0.99 –3.0 0.98 –5.5 – deg Forward Transmission Coefficient |S21| θ21 16.8 128 14.7 64.3 – deg Reverse Transmission Coefficient S12 θ12 0.00048 84.9 0.00092 79.2 – deg Motorola, Inc. 1996 MOTOROLA ANALOG IC DEVICE DATA Rev 5 1 MC1490 ELECTRICAL CHARACTERISTICS (VCC = 12 Vdc, f = 60 MHz, BW = 1.0 MHz, TA = 25°C) Characteristic Figure Symbol Min Typ Max Unit Power Supply Current Drain – ICC – – 17 mA AGC Range (AGC) 5.0 V Min to 7.0 V Max 19 MAGC –60 – – dB Output Stage Current (Sum of Pins 1 and 8) – IO 4.0 – 7.5 mA Single–Ended Power Gain RS = RL = 50 Ω 19 GP 40 – – dB Noise Figure RS = 50 Ohms 19 NF – 6.0 – dB Power Dissipation – PD – 168 204 mW Figure 1. Unneutralized Power Gain versus Frequency (Tuned Amplifier, See Figure 19) Figure 2. Voltage Gain versus Frequency (Video Amplifier, See Figure 20) AC , SINGLE–ENDED VOLTAGE GAIN (dB) G P , UNNEUTRALIZED GAIN (dB) (SINGLE–ENDED OUTPUT) 70 VCC = 12 Vdc 60 50 40 30 20 10 0 10 20 50 100 200 VCC = 12 Vdc 40 30 RL = 100 Ω 20 10 0 RL = 10 Ω 0.1 1.0 10 100 1000 f, FREQUENCY (MHZ) Figure 3. Dynamic Range: Output Voltage versus Input Voltage (Video Amplifier, See Figure 20) Figure 4. Voltage Gain versus Frequency (Video Amplifier, See Figure 20) 5.0 50 VCC = 12 Vdc V5(AGC) = 0 V f = 1.0 MHz AV , SINGLE VOLTAGE GAIN (dB) V O, OUTPUT VOLTAGE (V RMS) RL = 1.0 k f, FREQUENCY (MHZ) 10 1.0 0.5 RL = 1.0 k 0.1 100 Ω 0.05 10 Ω 0.01 0.1 0.2 0.5 1.0 2.0 5.0 10 en, INPUT VOLTAGE (mVRMS) 2 50 20 50 100 VCC = 6.3 Vdc 40 RL = 1.0 kΩ 30 100 Ω 20 10 0 0.3 0.5 1.0 3.0 5.0 10 30 50 100 300 f, FREQUENCY (MHZ) MOTOROLA ANALOG IC DEVICE DATA MC1490 f = 1.0 MHz Rl = 1.0 Ω 40 AV 24 0 21 10 35 18 30 15 25 12 ICC 20 9.0 15 6.0 10 3.0 5.0 GR , GAIN REDUCTION (dB) 45 Figure 6. Typical Gain Reduction versus AGC Voltage I C , SUPPLY CURRENT (mAdc) AV, SINGLE–ENDED VOLTAGE GAIN (dB) Figure 5. Voltage Gain and Supply Current versus Supply Voltage (Video Amplifier, See Figure 20) 2.0 4.0 6.0 8.0 10 12 14 RAGC 30 RAGC = 100 kΩ 40 50 60 RAGC = 0 Ω 0 3.0 6.0 9.0 12 15 18 21 24 27 30 VR(AGC), AGC VOLTAGE (Vdc) Figure 7. Typical Gain Reduction versus AGC Current Figure 8. Fixed Tuned Power Gain Reduction versus Temperature (See Test Circuit, Figure 19) 0 50 10 40 100 < RAGC < 100 k 20 G p ,POWER GAIN (dB) GR , GAIN REDUCTION (dB) RAGC = 5.6 kΩ 80 16 VCC, SUPPLY VOLTAGE (V) 30 40 50 60 30 0°C 20 +25°C 10 +75°C –55°C 0 VCC = 12 Vdc f = 60 MHz RAGC = 5.6 kΩ 70 –10 80 –20 5.0 –40 –20 0 20 40 60 80 100 120 140 160 5.2 5.4 IAGC AGC CURRENT (µA) 10 70 9.0 NF, NOISE FIGURE (dB) f = 60 MHz 50 GP 40 5.8 6.0 6.2 6.4 6.6 6.8 7.0 Figure 10. Noise Figure versus Frequency 80 60 5.6 +125°C VR(AGC), AGC VOLTAGE (Vdc) Figure 9. Power Gain versus Supply Voltage (See Test Circuit, Figure 19) Gp , POWER GAIN (dB) 5 MC1490P 20 70 0 0 VR(AGC) 30 20 8.0 7.0 6.0 5.0 RS Optimized for minimum NF 4.0 3.0 2.0 10 1.0 0 0 0 2.0 4.0 6.0 8.0 10 VCC, POWER SUPPLY VOLTAGE (V) MOTOROLA ANALOG IC DEVICE DATA 12 14 16 15 20 25 30 35 40 50 60 70 80 90 100 150 f, FREQUENCY (MHz) 3 MC1490 Figure 11. Noise Figure versus Source Resistance Figure 12. Noise Figure versus AGC Gain Reduction 40 20 NOISE FIGURE (dB) 16 14 f = 105 MHz 12 f = 30 MHz BW = 1.0 MHz 35 VCC = 12 Vdc 10 f = 60 MHz 8.0 f = 30 MHz 6.0 4.0 30 25 20 15 Test circuit has tuned input providing a source resistance optimized for best noise figure. 10 5 2.0 0 0 100 200 400 600 1.0 k 2.0 k 4.0 k 10 k 0 –10 –20 RS, SOURCE RESISTANCE (Ω) –30 –40 –50 –60 –70 –80 GR, GAIN REDUCTION (dB) Figure 13. Harmonic Distortion versus AGC Gain Reduction for AM Carrier (For Test Circuit, See Figure 14) 40 HARMONIC DISTORTION IN DETECTED MODULATION (%) NF, NOISE FIGURE (dB) 18 f = 10.7 MHz Modulation: 90 % AM, fm = 1.0 kHz Load at Pin 8 = 2.0 kΩ EO = peak–to–peak envelope of modulated 10.7 MHz carrier at Pin 8 35 30 760 mVpp 25 20 EO = 2400 mVpp 15 240 mVpp 10 5.0 0 0 10 20 30 40 50 60 70 80 GR, GAIN REDUCTION (dB) Figure 14. 10.7 MHz Amplifier Gain ] 55 dB, BW ] 100 kHz 7 0.002 6 VAGC 10.7 MHz (50 Ω Source) 5 5.6 k 4 82 pF L1 50–150 pF L1 = 24 turns, #22 AWG wire on a T12–44 micro metal Toroid core (–124 pF) 4 8 MC1490P 1 36 pF 50 Ω Load L2 RFC 3 2 0.002 +12 Vdc 0.002 L2 = 20 turns, #22 AWG wire on a T12–44 micro metal Toroid core (–100 pF) MOTOROLA ANALOG IC DEVICE DATA MC1490 Figure 15. S11 and S22, Input and Output Reflection Coefficient Figure 17. S21, Forward Transmission Coefficient (Gain) 70 MHz Figure 16. S11 and S22, Input and Output Reflection Coefficient Figure 18. S12, Reverse Transmission Coefficient (Feedback) 80 MHz 10 100 MHz 5.0 60 MHz 120 MHz 150 MHz 50 MHz 5.0 200 MHz 40 MHz 10 30 MHz 15 20 MHz 10 MHz MOTOROLA ANALOG IC DEVICE DATA 5 MC1490 Figure 19. 60 MHz Power Gain Test Circuit 0.0001 µF C3 Shield C4 8 VAGC L1 7 10 k VR(AGC) VR(AGC) L2 MC1490P 5 3 8 1 2 4 1.0 µF 3 0.001 µF +12 Vdc +12 Vdc 0.001 µF 0.001 µF VR(AGC) RL MC1490P 5 ei 2 RAGC eo 6 5.6 k 1.0 µF 1 4 C1 Output (50 Ω) 6 C2 0.001 µF 1.0 µF 7 Input (50 Ω) Figure 20. Video Amplifier L1 = 7 turns, #20 AWG wire, 5/16″ Dia.,5/8″ long L2 = 6 turns, #14 AWG wire, 9/16″ Dia.,3/4″ long C1,C2,C3 = (1–30) pF C4 = (1–10) pF Figure 21. 30 MHz Amplifier (Power Gain = 50 dB, BW 1.0 MHz) [ 0.002 µF 6 (1 – 30) pF Input (50 Ω) 38 pF 5 L1 VAGC VAGC 7 T1 8 RL = 50 Ω C2 MC1490P 1 2 4 3 0.002 µF 5.6 k Figure 22. 100 MHz Mixer 1 – 10 pF 10 µH Input from local oscillator (70 MHz) 6.0 V 5 100 (1 – 10) pF 6 Signal Input (100 MHz) (1 – 10) pF (1 – 30) pF 8 IF Output (30 MHz) MC1490P L2 L1 4 (1 – 30) pF 3 0.002 µF +12 Vdc VR(AGC) 7 2 1 +12 Vdc 0.002 µF 10 µH L1 = 5 turns, #16 AWG wire, 1/4″, ID Dia., 5/8″ long L2 = 16 turns, #20 AWG wire on a Toroid core, (T44–6). L1 = 12 turns, #22 AWG wire on a Toroid core, (T37–6 micro metal or equiv). T1: Primary = 17 turns, #20 AWG wire on a Toroid core, (T44–6). Secondary = 2 turns, #20 AWG wire. Figure 23. Two–Stage 60 MHz IF Amplifier (Power Gain [ 80 dB, BW [ 1.5 MHz) 10 k VR(AGC) 5.1 k Input (50 Ω) 24 pF 5 200 µH (1–10) pF Shield 7 4 T1 0.002 µF MC1490P 5 1.0 k 1 (1–10) pF 2 3 0.002 µF T2 8 8 6 (1–10) pF Shield 7 4 RFC Output (50 Ω) MC1490P 6 1 (1–10) pF 39 pF 2 0.002 µF 3 10 µH RFC 0.001 µF +12 Vdc T1: Primary Winding = 15 turns, #22 AWG wire, 1/4″ ID Air Core Secondary Winding = 4 turns, #22 AWG wire, Coefficient of Coupling 1.0 [ 6 T2: Primary Winding = 10 turns, #22 AWG wire, 1/4″ ID Air Core Secondary Winding = 2 turns, #22 AWG wire, Coefficient of Coupling 1.0 [ MOTOROLA ANALOG IC DEVICE DATA MC1490 Table 1. Distortion versus Frequency DESCRIPTION OF SPEECH COMPRESSOR Distortion The amplifier drives the base of a PNP transistor operating common–emitter with a voltage gain of approximately 20. The control R1 varies the quiescent Q point of this transistor so that varying amounts of signal exceed the level Vr. Diode D1 rectifies the positive peaks of Q1’s output only when these peaks are greater than Vr 7.0 V. The resulting output is filtered by Cx, Rx. Rx controls the charging time constant or attack time. Cx is involved in both charge and discharge. R2 (the 150 kΩ and input resistance of the emitter–follower Q2) controls the decay time. Making the decay long and attack short is accomplished by making Rx small and R2 large. (A Darlington emitter–follower may be needed if extremely slow decay times are required.) The emitter–follower Q2 drives the AGC Pin 5 of the MC1490P and reduces the gain. R3 controls the slope of signal compression. Distortion Frequency ] 10 mV ei 100 mV ei 10 mV ei 100 mV ei 100 Hz 3.5% 12% 15% 27% 300 Hz 2% 10% 6% 20% 1.0 kHz 1.5% 8% 3% 9% 10 kHz 1.5% 8% 1% 3% 100 kHz 1.5% 8% 1% 3% Notes 1 and 2 Notes: (1) Decay = 300 ms Attack = 20 ms Cx = 7.5 µF Rx = 0 (Short) (2) Notes 3 and 4 (3) (4) Decay = 20 ms Attack = 3.0 ms Cx = 0.68 µF Rx = 1.5 kΩ Figure 24. Speech Compressor +12 V 25 µF 0.001 1.0 k 1.0 k 10 µF 2 5 15 µF 4 Input R3 15 k 3 7 +12 V 220 +12 V Q2 2N3904 MOTOROLA ANALOG IC DEVICE DATA Rx 150 k +12 V 2.2 k Q1 2N3906 R2 4.7 k 10 µF 8 MC1490P 6 15 µF Output 1 Cx D1 6.8 k Vr 33 k R1 100 k 7 MC1490 OUTLINE DIMENSIONS 8 P SUFFIX PLASTIC PACKAGE CASE 626–05 ISSUE K 5 –B– 1 4 F –A– NOTE 2 L C J –T– N SEATING PLANE D H M K NOTES: 1. DIMENSION L TO CENTER OF LEAD WHEN FORMED PARALLEL. 2. PACKAGE CONTOUR OPTIONAL (ROUND OR SQUARE CORNERS). 3. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982. DIM A B C D F G H J K L M N MILLIMETERS MIN MAX 9.40 10.16 6.10 6.60 3.94 4.45 0.38 0.51 1.02 1.78 2.54 BSC 0.76 1.27 0.20 0.30 2.92 3.43 7.62 BSC ––– 10_ 0.76 1.01 INCHES MIN MAX 0.370 0.400 0.240 0.260 0.155 0.175 0.015 0.020 0.040 0.070 0.100 BSC 0.030 0.050 0.008 0.012 0.115 0.135 0.300 BSC ––– 10_ 0.030 0.040 G 0.13 (0.005) M T A M B M Motorola reserves the right to make changes without further notice to any products herein. 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