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A/D converter uses sigma-delta modulation to resolve 16 bits at 100 kHz The DSP56ADC16 100-kHz 16-bit A/D converter implements sigma-delta modulation technology on a single chip. The sigma-delta conversion technique's [...]

Focuses on the use of the COP8flash microC to initiate and control in-system programming designs. Visualization of the sample virtual-EEPROM code; Creation of a medical timer to warn patients taking pill medication at home; Reduction of system acoustic noise by running system fans at an optical speed.

Announces the entries for design idea selection for direct-digital-synthesis (DDS) devices used in the electronics industry in the United States. Features of DDS; List of designs for DDS devices; Format for DDS design idea voting.

Presents various electronic design ideas in the United States. Includes conversion of audio and video to frequency modulation using synchronous oscillator by Vasil Uzunoglo; Use of off-the-shell magnetics with high isolation converters by Mitchell Lee; Simplification of hardware and software through autoranging circuit by Dana Romero.

Focuses on smart-battery technology. Charge control; Standardization issues; Battery management; Advantages of an intelligent battery; Financial issues; Applications; Accuracy considerations; Development systems; Limitations. INSETS: What's a smart battery?.;The debate over smart-battery standards.;Looking ahead..

Presents electronics design ideas. Includes the PSpice model of nickel-metal-hydride cells by Steven C. Hageman of Calex Manufacturing Co., Concord, California; Printer port precision analog I/O board; PAL universal ISA bus interface by Jerzy R. Chrzaszcz of Warsaw, Poland.

Focuses on the development and use of analog-to-digital converters (ADC). Choosing an amplifier that would not tarnish the performance of ADCs; Providing best overall performance for ADCs; Efforts of the National Semiconductor to design better drive amplifiers compatible with ADCs; Consideration of ADC's input structure in the choice of amplifiers; Types of inputs. INSET: Looking ahead (challenge for amplifier designers)..

Presents information on designs which can be used for various electronic applications, which may be of interest to engineers. Details on the use of encoders; Type of information which can be acquired on the National Semiconductor web site; Description of time domain algorithms.

Presents information on several electronic developments. Details on the development of a muC for generating the PWM signal; Design of a multirange power meter for use on benchtops; Features of a low-battery voltage-cutoff circuit.

Presents information on various development ideas for the electronics industry in the United States. Information on a design regarding the implementation of an adder and a state machine; Details on how a java applet establishes a standard-resistor value calculator; Use of attenuators to temperature-compensate a dc voltage of different circuits.

Presents information on the design of several integrated circuits (IC). Features of the circuits; Information on the designers of the IC; What the circuits are used for; Details on a step-up/step-dwon converter.

Presents information on designs which can be used in the development of electronic devices. Factors which should be considered when attempting to develop a synchronous-demodulator circuit; Limitations of synchronous circuits; Information on a device which can be used in the design of light dimmer controllers.

Presents information on various electronic designs for the electronics industry in the United States. Information on the use of a car ignition coil in the place of a high-voltage transformer to generate high voltages; Functions of the DS5000T or the Dallas Semiconductors, www.dalsemi.com. an 8051-comatible processor; Benefits of the use of amplitude limiters.

Presents information on a design of several electronic circuits. Details on the two code systems used; Details on the 3.6864-MHz crystal to provide precise baud-rate timing; Special features of the controller; Design of Li-ion battery charger.

Presents a number of circuit design ideas for electronic components. Description of the circuits; What they are compatible with; Features of the circuits.

Looks at various design features and ideas for engineers and engineering managers worldwide. What is an easier way to save I/O pins; How to change the inductance of the search coil; Information on the 16C508 multichip controller; What the controller provides; Details on other design features and ideas.

Offers ideas for methods which can be used to enhance the performance of electronic devices. Information on an amplifier which can be used with high voltages; Details on the hot-cathode fluorescent lamp which contains gaseous mixtures; How the systems can be developed; Advantages of implementing the systems; Functions of the systems.

Presents information on designs pertaining to the electronic industry. Details on cables and television tuners; Reference to an ADC's changing conversion rate; Information on battery chargers; Details on other designs.

Presents several design ideas for use in the electronic equipment industry. How to simulate the dynamic behavior of a battery; Reason designers of battery-powered devices mainly choose components that run at 3V or lower; Details on the use of RS-232C port to measure pressure.

Deals with behavioral descriptions of output and input patterns which can be defined by combinatorial logic circuitry. Examination on the use of Espresso technique available from the university of California; Discussion on simple and efficient behaviors of subcircuit model transistors; Information on the use of battery-operated recording equipment along with other inclusions.

Presents information on various electronic circuit designs. Information on the switched-capacitor filter; What is this filter used for; Examination of a resistor packs which eliminate temperature drift; Details on other designs.

Presents some design ideas for electronic devices as appeared in the March 3, 1997 issue of `EDN' magazine.

Presents information on designs of battery circuits from several electronic companies in the United States. Details on design for notebook computer and portable equipment; Circuit that charges lead-acid batteries. Design for saturable inductor that improves reverse-recovery time.

Features various tips on electronic circuit design. Battery voltage monitor; EEPROM programming; Noise-enhancing circuit; Random-number generator; RTD-to-digital converter circuit; Single-ended primary-inductance-converter (SEPIC) switching regulator; Noise synthesizer.

Features several electronic circuit design ideas. Dual tracking reference regulator; Bidirectional level translator; Switching converter; Negative regulator; Frequency window comparator; Watchdog circuit.

Presents several electronics design ideas. Includes a low-cost RS-232C multiplexer that serves as multiport adapter; Method for testing electromechanical transducers; Approach for in-system programming using a programmable memory device, RS-232C interface and PAL.

Features several electronic circuit designs. Includes a circuit that widens an optocoupler's response to 1 MHz; Configuration of two-digit display; Temperature measurement; Configuration for a waveform generator; Power-supply circuit.

Features several electronic circuit design ideas. Analog multiplexers; Limiting amplifier; Tachometer demodulator; Thermistors.

The AD640 dc-coupled logarithmic amplifier is a monolithic, completely analog device that features a dynamic range of 50 dB, a maximum dc nonlinearity of +/-0.6 dB, and a 120-MHz bandwidth. [...]

Describes the electric generator that produces accurate sine waves without using floating-point arithmetic. Location of the two poles on the right-hand side of the circuit that reveals generator's oscillatory nature; Use of one MC68HC11 processor which have a data rate of two-megahertz.

Describes the design of the simple, three-integrated circuit superheterodyne receiver that can receive radio stations in the 4.5- to 10-megahertz range. Amplification of the intermediate frequency signal to reproduce the audio signal contained in the radio frequency input; Removal of any out-of-band responses by the use of ceramic filters.

Features two products that are vying for the top spot of op-amp speed, Comlinear Corp.'s CLC449 and Burr-Brown Corp.'s OPA648. Lower power consumption; Specifications; Performance.

Features Analog Devices' AD607 and AD608 wireless ICs which embody complete IF subsystems. High level of integration and performance; Features.

Evaluates the resistor network in extending Schmitt trigger circuit for converting low-level analog signal to digital form. Setting of resistors of DC level on Schmitt inverter; Elimination of input capacitor on avoiding problems with asymmetrical input waveforms; Provision of potentiometer network on large spreads on component values.

Focuses on the use of Centronics port in computers to generate narrow pulse widths. Features of the port device; Significance of variable-pulse-width signals in control circuit; Cycle of pulse generation.

Details how inverters can be used in ring oscillators. Prerequisite for oscillation; Functions of the diodes in a ring-type oscillator; Range of frequencies over which the circuit can operate.

Shows how the centronics port of the personal computer (PC) can be used in generating narrow pulse widths for positioning and holding purposes in robotics and power electronics. Setting of counter 2 of the PC; Outputs generated by the circuit; Problem posed by phase noise.

Describes an analog to digital converter (ADC) that enables temperature-compensated weigh-scale measurements. Simultaneous measurement of both the temperature of the bridge and the primary output of the bridge transducer; Solution to the throughput problem that uses the two independent channels of an AD7719 dual sigma-delta ADC.

Presents an electronic circuit design that uses low-end microcontrollers to transform the hex code into two BCD codes. Difficulty of observing output data of hex codes; Engineers' lack of familiarity with the hex code; Application of microcontrollers on a Motorola MC68HC705J1A, with 14 I/O.

Presents the electronic design for a special basic input/output system (BIOS) that performs analog to digital (A/D) conversion. Use of single-chip integrated circuits and dedicated hardware by most A/D conversion techniques; Key features and specifications.