DSPatchThe DSP Applications Newsletter: Number 36 (Fall, 1996, 16 pages) features the low-cost ADSP-2104 and performance/cost improvements to other family members; use of ADSP-2101 in Doppler traffic safety radar; a SHARC-based FM broadcast radio exciter. Also, program code and data overlays in ADSP-2181-based DSP systems; interfacing SHARC DSPs to flash memory; four articles about third-party users; tips on writing a C program for a SHARC DSP. Plus Q&A, Update, and much more. FREE, Circle 22
COMMUNICATIONS DIRECTSystems and IC solutions for demanding markets: Volume 2, No. 1 (August, 1996, 8 pages). Features articles on GSM, chipsets, and the type approval process. And more... FREE, Circle 23
Accelerometer News, Issue 5 (October, 1996, 4 pages). Features the ADXL150 and ADXL250 single- and dual-axis 50-g accelerometers with 10-mg resolution; a vibration-cutoff switch design; an interesting series of acceleration waveforms; and news about ADIs new dedicated fab for micromachined products in Cambridge, MA. FREE, Circle 24
ANALOG BRIEFINGSThe newsletter for the defense/aerospace industries, Volume 11, No. 1 (October, 1996, 8 pages). Features new-product introductions and discussions of: the integral EMI filter for conducted noise in ADIs new line of high-density dc-dc converters; ADIs recent worldwide QML certification; an upcoming Quad-SHARC module; product additions to ADIs RADTESTSM database. FREE, Circle 25
SignalsIssue 3 (October, 1996, 4 pages). Features articles on signal-conditioning modules, boards, and accessories available from Analog Devices, including the 5B, 6B, and 7B module series, and RTI-2100 series boards and multiplexer panels. FREE, Circle 26BROCHURES AND GUIDES
The Analog Devices family of Instrumentation Amplifiers, a 6-page guide to selecting IC instrumentation amplifiers. Includes 5 new members, the low-cost AD620, AD621, AD622 and the single-supply AD626 and AMP04. Circle 27
Quick Reference Guide: Industrial signal conditioning and data acquisition I/O solutions, a 6-page brief guide to the 2B, 3B, 5B, 6B, and 7B series of signal conditioning modules and the RTI family of data-acquisition boards. FREE, Circle 28
PRODUCT HIGHLIGHT BRIEF BROCHURE
Interfacing the AD22100 temperature sensor to a low-cost single-chip microcontroller, by Norm Bernstein [12 pp., AN-395]. The AD22100 (Analog Dialogue 29-1, 1995) is a monolithic self-contained linear RTD and amplifier. The output of the AD22100 is proportional to supply voltage as well as temperature, so it can share a common reference with an A/D converter to minimize reference-related measurement errors ratiometrically. This Application Note discusses both hardware and software issues in a design employing an 80C51 microcontroller for A/D conversion. Circle 30
Fast rail-to-rail operational amplifiers ease design constraints in low-voltage high-speed systems, by Eamon Nash [8 pp., AN-417]. A discussion of output stages in rail-to-rail op amps, and several applications: driving high-speed ADCs; line drivers; active filters; transformer drive circuits; HDSL transceiver. Circle 31
A discrete, low-phase-noise, 125-MHz crystal oscillator for the AD9850 complete direct-digital synthesizer, by Richard Cushing (Analog Devices) and Steven Swift (Novatech Instruments, Inc.) [2 pp. AN419]. Solving the challenging problem of providing a clean, 125-MHz clock signal to exercise the AD9850 (Analog Dialogue 30-3, p. 12) at its fastest rate. Circle 32BOOK REVIEW
Electronic Communication Systems: A Complete Course, 2nd edition, by William Schweber. Englewood Cliffs, NJ: Prentice Hall, 1996. [not available from Analog Devices].
Bill Schweber, the author of this excellent 800-page textbook, is well-known to readers of EDN magazine (and earlier, to readers of Analog Dialogue). His writing is characterized by clarity of exposition and a practical approach. In the preface to the first edition, he set out his theme: to cover the traditional aspects of communications, yet recognize and explore three factors that have changed the face of communications systems: the widespread use of ICs to implement circuitry, the use of microprocessors and software to manage and improve the operation of traditional analog communication systems, and the use of digital techniques and signals to supplement or virtually replace analog techniques. The book provides a presentation of the way systems are commonly implemented, along with a discussion of the tradeoffs that exist in any system design: speed, power, performance, errors, complexity.
Over half the first edition was devoted to digital communications and actual communication systemsvideo, facsimile, telephone, modems, RS-232, cellular phones, computer networks, satellites, radar, fiber optics (following the necessary basic topics, such as bandwidth AM, FM, antennas, transmitters, receivers, and microwaves). The new edition has expanded its coverage into areas such as digital cellular phones, the numerous emerging standards for personal communication systems (mostly wireless), and wired and wireless networks including ISDN, SONET, ATM, and the Internet, along with discussions of the context in which they fit, and strengths and weaknesses.
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