MC13122 Freescale Semiconductor, Inc, MC13122 Datasheet
MC13122
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MC13122 Summary of contents
Page 1
... Product Preview AMAX Stereo Chipset The MC13027 and MC13122 have been specifically designed for AM radio which can meet the EIA/NAB AMAX requirements. They are essentially the same as the MC13022A and MC13025 with the addition of noise blanking circuitry. The noise blanker consists of a wide band amplifier with an RF switch for blanking ahead the IF amplifier and a stereo audio blanker with adjustable delay and blanking times ...
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... Wideband AGC Pull–Down Current (Pin 20) Power Supply Current Mixer 3rd Order Intercept Point (Pin 6) Mixer Conversion Gain IF Amplifier Input Impedance (Pin 14) IF Amplifier Transconductance IF Amplifier Load Resistance (Pin 16) IF Amplifier Collector Current (Pin 16) 2 MC13027 MC13122 Symbol Value Unit Vdc T A –40 to +85 ...
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... Q1 MMBFJ309L RM2 RL2 R1 16.7 51 100 k R2 C87 82 0.1 Pulse On Pulse In R299 51 NOTE: 1. General purpose NPN transistor 2N3904 or equivalent. MOTOROLA ANALOG IC DEVICE DATA MC13027 MC13122 Figure 1. MC13027 Test Circuit AGC Feedback C10 MC13027 0. AGC In 2 Blanker AGC + RF Module C16 1 10 µF 3 Feedback ...
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... IF Input Resistance Range IF Amplifier Transconductance IF Detector Circuit Impedance Input AGC Threshold Stop–Sense Output Range Audio Output Impedance at 1.0 kHz (Pins 7 and 14) Stereo Indicator Lamp Leakage Stereo Indicator Saturation Voltage @ 3.0 mA Oscillator Capture Range 4 MC13027 MC13122 Symbol Value Unit Vdc – 30 mAdc T A – ...
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... Ch2 Cont 1.0 µF 4 Ch2 In 3 Ch1 In 2 Ch1 Cont 1 Ch1 Out THB122 1000 SS Out Left Audio Out MOTOROLA ANALOG IC DEVICE DATA MC13027 MC13122 Figure 2. MC13122 Test Circuit C28 C27 C1 1000 1000 1000 MC13122 IC2 Det I Det 2 27 Det In L–R Det ...
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... MC13027 can provide a noise blanking pulse with the correct delay and stretch to the output stages of the MC13122 decoder. The MC13122 has a Track and Hold circuit which receives the blanking signal from the Front End and uses it to gently hold the audio wherever the pulse arrives, and hold that value until the noise has passed ...
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... IF pre–amplifier and noise blanker for an AM radio receiver designed to be used with the MC13122 to produce a complete AM stereo receiver. The VCO runs and is divided internally by 4 for the mixer input and local oscillator buffered output. Dividing the VCO reduces the phase noise for AM stereo applications ...
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... V AGC Reg MC13122 FUNCTIONAL DESCRIPTION The MC13122 is designed to accept a 450 kHz C–QUAM input signal from approximately 1 1.0 V and produce L and R audio output signals. It has additional features: stop signal, variable bandwidth IF and audio response, stereo indicator driver and track and hold noise blanking. ...
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... PLL. The beat note produced in the I detector by the out of lock condition will trigger the 10% negative I detector. MOTOROLA ANALOG IC DEVICE DATA MC13027 MC13122 Sequence For Seek Scan Change Station – Pull–Down Blend Wait Approximately 50 ms for Synthesizer and Decoder ...
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... AGC circuit. The noise blanker can be 2 disabled by grounding this pin. 10 µF is used in the application, but it can be changed to match the time constant of the main IF AGC in the MC13122, Pin 4. Blanker Feedback This pin is the dc feedback to the input stage of the wide band amplifier. ...
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... IF Output An open collector provides high–impedance drive to the MC13122; the IF gain is set by the impedance on this pin Blank Time A resistor to ground sets the RF blanking time. The time is set to the minimum required to attenuate the pulse received ...
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... Audio Blank Pulse When the blanker is operating, a positive pulse from this pin is fed to Pin 15 of the MC13122 to blank the audio signal. Audio Blank 4 Audio Blank Time A resistor to ground sets the width of the blanking pulse on Pin 18 ...
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... MC13122 PIN FUNCTION DESCRIPTION Pin Name Internal Equivalent Circuit 1 E Detector 6 Detector In 120 3 3.0 V Reg 3 AGC Byp AGC Current MOTOROLA ANALOG IC DEVICE DATA MC13027 MC13122 Envelope Detector This is the output of the envelope detector and used for one input to the comparator that generates cosθ ...
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... MC13122 PIN FUNCTION DESCRIPTION Pin Name Internal Equivalent Circuit 6 SS Signal Strength Stop–Sense Pull–Down 7 Left Out 14 Right Out 8 L Filt Filt Filt Ctr 12 R Filt Ctr Matrix Out 11 R Matrix Out 15 AF Blank ...
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... MC13122 PIN FUNCTION DESCRIPTION Pin Name Internal Equivalent Circuit 16 Pilot Q 3 Pilot I 3 Pilot Det Osc Osc Out V CC MOTOROLA ANALOG IC DEVICE DATA MC13027 MC13122 (continued) Pilot Q This is the output of a quadrature detector of a narrowband phase locked loop system. ...
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... The operating voltage is normally 8 car radios. The MC13122 will work from 6 Detector Output This is a synchronous detector in quadrature with the 450 kHz IF signal. The output impedance is Q Det Out This signal is normally used for input to the 26 pilot detector and internally for the fast lock ...
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... MC13122 PIN FUNCTION DESCRIPTION Pin Name Internal Equivalent Circuit 27 L–R Detector Detector V CC MOTOROLA ANALOG IC DEVICE DATA MC13027 MC13122 (continued) L–R Detector This is similar to the Q detector output but its level L–R Det is controlled by the blend circuit. When the blend is 6 ...
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... Mix the pulse signal with a CW signal of about 300 µV with a power combiner and connect the oscilloscope to Pin 7 or Pin 14 of the MC13122. Adjust R17 so the blanking starts at the beginning of the audio pulse and R19 so the audio blanking is just long enough to suppress the audio pulse. The ...
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... Figure 6. MOTOROLA ANALOG IC DEVICE DATA MC13027 MC13122 THB122 TMG522E 19 ...
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... R5 2.7 k MMBT3904L C7 C57 0.01 0. PIN 126ANS BA585 7594HM 3 C56 R52 0.047 390 AGC Figure 8. MC13027/MC13122 Discrete RF and Notch Filters MC13122 Pins Filt In 360 44.2 k 22.1 k Filt Ctr 720 360 44.2 k Filt Out 20 MC13027 MC13122 Figure 7. RF Pin Diode C18 ...
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... NOTE: This curve shows the effect of the variable audio bandwidth control of the MC13122 due to the variable loading of the IF coil and the variable 10 kHz notch filter in the output. Figure 15. Stop–Sense Voltage 4.0 3.0 Pin 23 = Open 2.0 Pin 23 = Grounded 1 ...
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... R17 (kΩ) Figure 18. Audio Blanking Time versus R19 1000 100 10 1 100 330 R19 (kΩ) 22 MC13027 MC13122 Figure 17. RF Blanking Time versus R15 1000 100 10 1.0 1000 10 33 Figure 19. WB AGC Output Voltage (Pin 20) versus RF Input Level 9.0 8.0 7.0 6.0 5.0 4.0 3.0 2.0 1.0 ...
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... Add Wire (3) Cut (2) Cut ( MOTOROLA ANALOG IC DEVICE DATA MC13027 MC13122 AMAX STEREO CHIPSET power supply connections. This modification is described below. Motorola will work with TOKO to develop a new part number incorporating this change. In the meantime necessary that the user perform these simple changes, because the radio circuits throughout this data sheet assume this modified design ...
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... Figure 22. AMAX Chipset Printed Circuit Board VT Osc WH11 WH3 + C14 FL2 WH1 WH2 Q1 Gnd Ant Figure 23. AMAX Chipset Printed Circuit Board 24 MC13027 MC13122 (Top View FL1 WH6 WH5 WH4 FL3 WH13 Q2 Gnd T2 WH9 C22 C35 WH8 + + C11 + V CC ...
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... Figure 24. AMAX Chipset Printed Circuit Board MOTOROLA ANALOG IC DEVICE DATA MC13027 MC13122 (Copper View) 25 ...
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... PL –A– –B– 10X 20X 0.010 (0.25 –T– G 18X K 26 MC13027 MC13122 OUTLINE DIMENSIONS P SUFFIX PLASTIC PACKAGE CASE 738–03 ISSUE 0.25 (0.010) M 0.25 (0.010 SUFFIX PLASTIC PACKAGE CASE 751D– ...
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... SEATING PLANE - 28X 0.010 (0.25 -T- G 26X MOTOROLA ANALOG IC DEVICE DATA MC13027 MC13122 OUTLINE DIMENSIONS P SUFFIX PLASTIC PACKAGE CASE 710–02 ISSUE B NOTES SUFFIX PLASTIC PACKAGE CASE 751F–04 (SO–28L) ISSUE E 15 ...
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... MFAX: RMFAX0@email.sps.mot.com – TOUCHTONE 602–244–6609 INTERNET: http://Design–NET.com 28 MC13027 MC13122 are registered trademarks of Motorola, Inc. Motorola, Inc Equal JAPAN: Nippon Motorola Ltd.; Tatsumi–SPD–JLDC, 6F Seibu–Butsuryu–Center, 3–14–2 Tatsumi Koto–Ku, Tokyo 135, Japan. 03–81–3521–8315 ASIA/PACIFIC: Motorola Semiconductors H.K. Ltd. ...