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A pulse generator using R.T.L. integrated circuits
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WORLD A B S T R A C T S ON M I C R O E L E C T R O N I C S AND R E L I A B I I , | T Y
Linear metal-oxide-semiconductor integrated circuits. J. L. CHALFAN and J. C. LOONEY, Solid St. Technol., May (1969), p. 31. A study of various linear metal-oxide-semiconductor integrated circuit configurations is presented with the goal of improving their operation. The operation of MOS devices is treated including their use as load devices to replace diffused resistors. The advantages and disadvantages of the resulting circuits as well as possible physical layouts are discussed. The use of a current-source load device is suggested to improve the voltage gain and output voltage swing. Experimental results show that circuits with current-source loads have at least a ten times advantages in voltage gain and an output voltage swing nearly equal to the supply voltage. Solid-state imaging is easy with MSI. D. V. ~FEMLING,EDN, 15 May (1969), p. 53. Couple the complexity of medium-scale integration (MSI) with that of linear optical arrays and a complete imaging system results. Just how compatible these two complex technologies are is clearly demonstrated. And, there is a bonus in that the system is: low in cost, high in reliability and uses few parts. T h i n film capacitors. D. GERSTENBERG,Solid St. Technol., May (1969), p. 50. Thin film dielectrics of semiconductor and metal oxides are evaluated for capacitor applications. Organic polymer films are also studied, but to a lesser extent. The techniques for thin film capacitor fabrication and the factors influencing capacitor characteristics are discussed. The methods for the formation of the two most common dielectric films include evaporation in the case of SiO and anodic oxidation of Ta2Os. The self healing properties of special structures such as tantalum film capacitors with a manganese oxide layers and the characteristics of "duplex" capacitors based on a combination of SiO and Ta2Os are described. Considerations affecting the design of thin film capacitors for integrated circuit applications are reviewed.
Theory and application of a linear four-quadrant monolithic multiplier. E. L. RENSCtILER.IEEE Spectrum 17, No. 5, May (1969), p. 60. Multipliers may eventually be second only to op amps. The article discusses analog multipliers in general and the Motorola MC1595 silicon monolithic IC specifically. The thinking behind the design of analog multipliers and how to apply them are covered. The big application areas for these devices is in the area of control and instrumentation. A pulse generator using R.T.L. integrated circuits. P. M. FENWICK,Radio Electron. Engr, June (1969), p. 374. A three-channel pulse generator is described which uses R.T.L. integrated circuits as the sole active devices. Each output pulse has a width variable from 100 nsec to 1 ~sec and may be delayed by up to 2 ~tsec with respect to either a fixed synchronization pulse or an external trigger. The circuit as a whole demonstrates the flexibility of some digital integrated circuits in non-digital applications.
Jack-of-all-trades: Monolithic i. f. is a universal subsystem. R. A. HIRSCHFELD,Electron. Engr 28, No. 6, June (1969), p. 97. Each class of two-way broadcast radio service (land, mobile, marine, and so forth) has its own standard mode of transmission (am, fm, ssb, and so forth). This diversity has discouraged wide use of IC i-f subsystems, since each such subsystem is peculiar to its own transmission mode. The article describes a new IC that serves nearly all radio service users, because the user himself can change the microcircuit's functions. Fie does this by rearranging the order of the circuits on the chip, and using only those which he needs--through external pin connections. The result is a universal subsystem that lets its user switch from one mode to another, even within the same receiver. A hybrid thick-film chroma demodulator and color-difference amplifier. C. M. ENGEL,C. F. HEPNER, M. L. KUMMEL, T. O. MELKERA~N and G. E. WEmEL, IEEE Trans. Parts, Mater. Pckng, PMP-5, No. 2, June (1969), p. 117. An experimental hybrid thick-film module has been developed that performs the functions of color demodulation and amplification in a color television receiver. The module consists of three principal circuit sections, all included on one 1 × 2 in. substrate: (1) two dual-diode color demodulators, (2) color-difference amplifiers, and (3) a four-diode d.c. restoration circuit that clamps all three color-difference signals. The circuit normally consumes about 9 W from a +250-V d.c. supply. Circuit features and design parameters are discussed, and the construction of the module is described. The module contains forty-nine components which include ceramic cup packaged transistors and diodes, screened resistors and capacitors, and high-voltage chip capacitors. Thermal limitations
WORLD A B S T R A C T S ON M I C R O E L E C T R O N I C S AND R E L I A B I I , | T Y
Linear metal-oxide-semiconductor integrated circuits. J. L. CHALFAN and J. C. LOONEY, Solid St. Technol., May (1969), p. 31. A study of various linear metal-oxide-semiconductor integrated circuit configurations is presented with the goal of improving their operation. The operation of MOS devices is treated including their use as load devices to replace diffused resistors. The advantages and disadvantages of the resulting circuits as well as possible physical layouts are discussed. The use of a current-source load device is suggested to improve the voltage gain and output voltage swing. Experimental results show that circuits with current-source loads have at least a ten times advantages in voltage gain and an output voltage swing nearly equal to the supply voltage. Solid-state imaging is easy with MSI. D. V. ~FEMLING,EDN, 15 May (1969), p. 53. Couple the complexity of medium-scale integration (MSI) with that of linear optical arrays and a complete imaging system results. Just how compatible these two complex technologies are is clearly demonstrated. And, there is a bonus in that the system is: low in cost, high in reliability and uses few parts. T h i n film capacitors. D. GERSTENBERG,Solid St. Technol., May (1969), p. 50. Thin film dielectrics of semiconductor and metal oxides are evaluated for capacitor applications. Organic polymer films are also studied, but to a lesser extent. The techniques for thin film capacitor fabrication and the factors influencing capacitor characteristics are discussed. The methods for the formation of the two most common dielectric films include evaporation in the case of SiO and anodic oxidation of Ta2Os. The self healing properties of special structures such as tantalum film capacitors with a manganese oxide layers and the characteristics of "duplex" capacitors based on a combination of SiO and Ta2Os are described. Considerations affecting the design of thin film capacitors for integrated circuit applications are reviewed.
Theory and application of a linear four-quadrant monolithic multiplier. E. L. RENSCtILER.IEEE Spectrum 17, No. 5, May (1969), p. 60. Multipliers may eventually be second only to op amps. The article discusses analog multipliers in general and the Motorola MC1595 silicon monolithic IC specifically. The thinking behind the design of analog multipliers and how to apply them are covered. The big application areas for these devices is in the area of control and instrumentation. A pulse generator using R.T.L. integrated circuits. P. M. FENWICK,Radio Electron. Engr, June (1969), p. 374. A three-channel pulse generator is described which uses R.T.L. integrated circuits as the sole active devices. Each output pulse has a width variable from 100 nsec to 1 ~sec and may be delayed by up to 2 ~tsec with respect to either a fixed synchronization pulse or an external trigger. The circuit as a whole demonstrates the flexibility of some digital integrated circuits in non-digital applications.
Jack-of-all-trades: Monolithic i. f. is a universal subsystem. R. A. HIRSCHFELD,Electron. Engr 28, No. 6, June (1969), p. 97. Each class of two-way broadcast radio service (land, mobile, marine, and so forth) has its own standard mode of transmission (am, fm, ssb, and so forth). This diversity has discouraged wide use of IC i-f subsystems, since each such subsystem is peculiar to its own transmission mode. The article describes a new IC that serves nearly all radio service users, because the user himself can change the microcircuit's functions. Fie does this by rearranging the order of the circuits on the chip, and using only those which he needs--through external pin connections. The result is a universal subsystem that lets its user switch from one mode to another, even within the same receiver. A hybrid thick-film chroma demodulator and color-difference amplifier. C. M. ENGEL,C. F. HEPNER, M. L. KUMMEL, T. O. MELKERA~N and G. E. WEmEL, IEEE Trans. Parts, Mater. Pckng, PMP-5, No. 2, June (1969), p. 117. An experimental hybrid thick-film module has been developed that performs the functions of color demodulation and amplification in a color television receiver. The module consists of three principal circuit sections, all included on one 1 × 2 in. substrate: (1) two dual-diode color demodulators, (2) color-difference amplifiers, and (3) a four-diode d.c. restoration circuit that clamps all three color-difference signals. The circuit normally consumes about 9 W from a +250-V d.c. supply. Circuit features and design parameters are discussed, and the construction of the module is described. The module contains forty-nine components which include ceramic cup packaged transistors and diodes, screened resistors and capacitors, and high-voltage chip capacitors. Thermal limitations