With the schematic below, this single conversion radio, was possible to achieve 12db of sinad with rf signal of 5uv at 14. The ta7642 is a single chip am radio integrated circuit ic with agc. Ta7642 datasheetpdf list of unclassifed manufacturers. The ta7642 is a complete am radio receiver on a chip. Radio, cassette system and other wireless am system. Icl7621, icl7641, ic l 7642 s e m i c o n d u c t o r dualquad, low power cmos operational, devices are sensitive to electrostatic discharge. With addition of the ta7642, increased simplicity of the circuit, contributing with if high gain, selectivity and demodulation for am signals. Am receiver using zn414 electronic circuits and diagrams. One chip am radio kit ta7642mk484 quasar electronics 3063kt. Here is my circuit diagram for a ta7642 based am radio. Etc2, alldatasheet, datasheet, datasheet search site for electronic components and semiconductors.
The mk484 has now in turn been replaced by the ta7642. From what i can see, the input stage consists of a longtail pair with very high input impedance. It can be seen to the upper right of the 8 pin audio ic. The ta7642 is suitable for low voltage portable radio, cassette system and other wireless am system. One chip am radio kit ta7642mk484 quasar electronics.
It is constructed in a to92 case, resembling a small transistor. Both of them are single transistors and are recommended due to being. Ta7642 mw lw if single tuned trf am radio chip with agc, to92 ic. Details about ta7642 mw lw if single tuned trf am radio chip with agc, to92 ic. My ta7642tda2822m based simple superhet is now playing on breadboard since a week ago. Ta7642 datasheet pdf, ta7642 data sheet, ta7642, ta7642. The values of the components are based on the official documentation, however other values such as rp and cp are mine based on practical experimentation. Ta7642 datasheet pdf am radio ic to92, ta7642 pdf, ta7642 pinout, equivalent, ta7642 data, ta7642 circuit, output, ic, ta7642. Users should tollow proper ic handling procedures, voltage en 3702 nvvhz icl7621, icl7641, icl7642 e le c tr ic a l s p e c if ic a t i o n s parameter vsupply v, unless otherwise. Ta7642 toshiba discrete semiconductors jotrin electronics.
The ta7642 is an am radio ic in a to92 package which requires very few external components to make a complete pocket radio. Ta7642 datasheet, ta7642 pdf, ta7642 data sheet, ta7642 manual, ta7642 pdf, ta7642, datenblatt, electronics ta7642, alldatasheet, free, datasheet, datasheets, data sheet, datas sheets, databook, free datasheet. The zn414 was popular amongst hobbyists as a fully working am radio could be made with just a few external components, a crystal earpiece and a 1. The mk484 am radio ic is a fully functional am radio detector on a chip. Ta7642 radio ic the ta7642 is an am radio ic in a to92 package which requires very few external components to make a complete pocket radio. It is a high sensitivity and high quality ic, it has only three leads and comes in to92 package and require only few external parts because all the necessary circuitry like rf amplifier. Here is a simple am radio circuit using ta7642 ic which is similar to zn414 ic. Ta7642, sum ta7642, ta7642 onechip am radio, buy ta7642. Ta7642 mw lw if single tuned trf am radio chip with agc. Currently 2017 only the ta7642 is manufactured and is used in some. Ta7642 1 chip am radio circuit components datasheet pdf data sheet free from datasheet data sheet search for integrated circuits ic. Ta7642 is a lowvoltage, portable, am radio ic in a 3pin, to92 package. All components supplied prewound coil, ferrite antenna, tuning capacitor, ta7642 radio ic, volume control pot, speaker, high quality printed circuit board. The design of this trf radio ic, well known to european and australasian constructors of radio receivers, was commenced in november 1970.
All the other projects i have made so far have been digital and microcontroller based, with the one exception to this being the nutclough amplifier, which was assembled from a kit. Cd9088cb datasheet monolithic electric tuning fm radio ic. Ta7642 radio icthe ta7642 is an am radio ic in a to92 package which requires very few externalcomponents to make a complete pocket radio. Make your own rocket radio with the ta7642 when my mom was a kid she owned a rocket radio, which was type of trf crystal radio that was a popular kids toy in the 50s and 60s. Here is a schematic of a good quality am radio receiver circuit. Ta7642 datasheet pdf am radio ic to92 datasheetcafe. The zn414 is a low cost, singlechip am radio integrated circuit. Rewarding, educational experience for beginners starting to explore electronics. Ta7642 datasheet, ta7642 datasheets, ta7642 pdf, ta7642 circuit. The zn414z is a 10 transistor tuned radio frequency trp circuit packaged in a 3pin to92 plastic package for simplicity and space economy. Then what follows are transistor stages performing high gain rf. I did build simple am receiver usind good old ta7642 and, after adding small 9v amp, the radio broadcast can be heard across entire house. Am radio ic, ta7642 datasheet, ta7642 circuit, ta7642 data sheet.
Simple am radio electrical engineering stack exchange. The is a monolithic integrated circuit designed a to92 package for use as a one chip radio solution, high sensitivity and high quality am radio is possible with very few external components. Simple am radio circuit using ta7642 ic circuit diagram. Ec selectivity achieved by active rc filter, mute circuit inhibit nonif signal and the if signal is too weak. It replaces the similar zn414 am radio ic from the 1970s. Ta7378p datasheet toshiba pdf data sheet free from. Selectivity is rather poor on the strong local station but it way too better than ta7642 alone which completely overloads the entire band. The wording two transistors in one housingcase is erroneously mentioned. This ic has many equivalents such as cd7642, utc7642, and lmf501. Ta7642 am radio ic components datasheet pdf data sheet free from datasheet data sheet search for integrated circuits ic. Making a simple am radio first experiences with radio frequency circuits. With a few extra components, you can have a fully functional trf radio receiver in the palm of your hands. The ta7642 needs very few external parts to build an am radio. Utc 7642 is suitable for low voltage portable radio, cassette system and other wireless am system.
The ta7642 is a am radio receiver ic which has automatic gain and up to 72 db gain. Ta7642 datasheet, ta7642 pdf, ta7642 pinout, equivalent, replacement 1 chip am radio circuit etc, schematic, circuit, manual. Ta7642 cardboard radio manlywarringah radio society. Ta7642 pdf, ta7642 description, ta7642 datasheets, ta7642. As a kid one of my favorite past times was tuning the am dial on my favorite radio after bedtime. Ta7642 single chip radio integrated circuit ic ebay. Cd9088cb is a monolithic power fm radio tuning circuit, the external circuit is simple, lowcost applications, phaselocked loop circuit builtin frequent rate of 70khz department. Ta7642 datasheet, ta7642 pdf, ta7642 pinout, equivalent, replacement am radio ic etc, schematic, circuit, manual. Both of the former pnp or npn transistors can be used in darlington configuration. It is cased in a to92 case that looks like a transistor. Mk484 to92 case am radio chip mikes electronic parts. Ta7642 product details the ta7642 is an am radio ic in a to92 package which requires very few external components to make a complete pocket radio. Ta7642 datasheet pdf pinout 1 chip am radio circuit. The mk484 is a am radio receiver ic which has automatic gain and up to 72 db gain.
Etc2 am radio ic,alldatasheet, datasheet, datasheet search site for electronic components and. Zn414 ic was a very famous am radio ic among electronics enthusiasts few years ago but now it is no more available in the market because it has been discontinued several years ago and now ta7642 and mk484 ics has taken. You can find vintage rocket radios on ebay, but as a christmas present i decided to make an updated model for her using the ta7642 ic. Basically it consists of a ta7642 integrated circuit that is constructed using discrete components i. T092 package at left used for zn414z, ys414,mk414 and ta7642. Launched in 1972, the part was designed and supplied by ferranti, but was also available from gecplessey. At this point it is worthwhile downloading the data sheets.
Low cost simple am receiver circuit designed based on ic. Ta7378p toshiba datasheet pdf data sheet free datasheets data sheet search for integrated circuits ic, semiconductors and other electronic components. Visiting my homepage and links list reflected on related pages above will direct you to a reliable ebay source that provides ta7642 at a very very reasonable cost. This circuit also uses the lm386 audio amplifier set to a gain of 200. But now i want to modify the circuit so it can use different antennas and coils, so i can change receiver frequency range, rf signal strength etc. With such a small ferrite loopstick sensitivity is poor. The big difference in this project is that unlike the other ones which i have built from scratch it is an analogue rf circuit. Rapid electronics ltd data sheet mk484 radio ic description the mk484 is a monolithic integrated circuit designed in a to92 package for use as a one chip radio solution, high sensitivity and high quality am radio is possible with very few external components. With the addition of a small audio amplifier, a complete radio receiver is possible. Mk484 featured radio designs the following is a collection of radio receiver designs which use the popular mk484 radio on a chip. It is compatible with the popular mk484 and the zn414.
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